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Turkish Journal of Medical Sciences

Magnetic resonance imaging

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Which Sequence Should Be Used In The Thorax Magnetic Resonance Imaging Of Covid-19: A Comparative Study, Ayşe Şule Ateş, Burak Yağdiran, Onur Taydaş, Ömer Faruk Ateş Oct 2023

Which Sequence Should Be Used In The Thorax Magnetic Resonance Imaging Of Covid-19: A Comparative Study, Ayşe Şule Ateş, Burak Yağdiran, Onur Taydaş, Ömer Faruk Ateş

Turkish Journal of Medical Sciences

Background and aim: To evaluate and compare magnetic resonance imaging (MRI) sequences that could potentially be used in the diagnosis of coronavirus disease 2019 (COVID-19). Materials and methods: Included in the study were 42 patient who underwent thorax computed tomography (CT) for COVID-19 pneumonia and thorax MRI for any reason within 24 h after CT. The T2-weighted fast spin echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) (T2W-FSE-P), fast imaging employing steady-state acquisition, T2 fat-saturated FSE, axial T1 liver acquisition with volume acceleration (LAVA) and single-shot FSE images were compared in terms of their ability to show COVID-19 …


A New Ventricular Index Based On Coronal Brain Magnetic Resonance Images In Patients With Idiopathic Normal Pressure Hydrocephalus, Yunus Yilmazsoy, Serdar Arslan, Adnan Özdemi̇r, Bora Korkmazer, Osman Kizilkiliç, Ali̇ Meti̇n Kafadar Jan 2023

A New Ventricular Index Based On Coronal Brain Magnetic Resonance Images In Patients With Idiopathic Normal Pressure Hydrocephalus, Yunus Yilmazsoy, Serdar Arslan, Adnan Özdemi̇r, Bora Korkmazer, Osman Kizilkiliç, Ali̇ Meti̇n Kafadar

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to assess the effectiveness of a new quantitative index for the diagnosis of idiopathic normal pressure hydrocephalus. Materials and methods: This retrospective study was conducted at İstanbul University Cerrahpaşa Medical Faculty between January 2016 and November 2022. A total of 31 patients diagnosed with idiopathic normal pressure hydrocephalus were included in the study group and 48 patients were included in the control group. Measurement via the new Index was performed on a coronal section of magnetic resonance imaging at the level of the anterior commissure. Results: The new Index's mean diagnostic performance was …


Texture Analysis Of Multiparametric Magnetic Resonance Imaging For Differentiating Clinically Significant Prostate Cancer In The Peripheral Zone, Hali̇l Özer, Mustafa Koplay, Ahmet Baytok, Nusret Seher, Lütfi̇ Saltuk Demi̇r, Abi̇di̇n Kilinçer, Mehmet Kaynar, Serdar Göktaş Jan 2023

Texture Analysis Of Multiparametric Magnetic Resonance Imaging For Differentiating Clinically Significant Prostate Cancer In The Peripheral Zone, Hali̇l Özer, Mustafa Koplay, Ahmet Baytok, Nusret Seher, Lütfi̇ Saltuk Demi̇r, Abi̇di̇n Kilinçer, Mehmet Kaynar, Serdar Göktaş

Turkish Journal of Medical Sciences

Background/aim: Texture analysis (TA) provides additional tissue heterogeneity data that may assist in differentiating peripheral zone (PZ) lesions in multiparametric magnetic resonance imaging (mpMRI). This study investigates the role of magnetic resonance imaging texture analysis (MRTA) in detecting clinically significant prostate cancer (csPCa) in the PZ. Materials and methods: This retrospective study included 80 consecutive patients who had an mpMRI and a prostate biopsy for sus- pected prostate cancer. Two radiologists in consensus interpreted mpMRI and performed texture analysis based on their histopathology. The first-, second-, and higher-order texture parameters were extracted from mpMRI and were compared between groups. Univariate …


A Single-Center Experience Of Magnetic Resonance Imaging Findings Of Fetal Sacrococcygeal Teratomas, Mesude Tosun, İsa Çam, Hande Uslu, Yasemi̇n Doğan, Yonca Anik Jan 2022

A Single-Center Experience Of Magnetic Resonance Imaging Findings Of Fetal Sacrococcygeal Teratomas, Mesude Tosun, İsa Çam, Hande Uslu, Yasemi̇n Doğan, Yonca Anik

Turkish Journal of Medical Sciences

Background/aim: Sacrococcygeal teratomas (SCT) are known as rare tumors, but they are the most common tumor in fetuses and newborns. This study aims to present fetal magnetic resonance imaging (MRI) findings of SCT diagnosed prenatally and compare them with that of the prenatal Ultrasound (US) findings. Materials and methods: Eleven patients diagnosed as SCT prenatally by US and further assessed by MRI are included. MRI was performed via a 1.5-T magnet with a body coil. The presence, size, content extension, and compressive effects of each mass were determined and correlated with US findings and with postnatal examinations, including surgery and …


Magnetic Resonance Imaging Findings In Covid-19-Related Anosmia, Hüseyi̇n Çeti̇n, Ayşe Şule Ateş, Ogün Taydaş, Bahri̇ Elmas, Ertuğrul Güçlü Jan 2022

Magnetic Resonance Imaging Findings In Covid-19-Related Anosmia, Hüseyi̇n Çeti̇n, Ayşe Şule Ateş, Ogün Taydaş, Bahri̇ Elmas, Ertuğrul Güçlü

Turkish Journal of Medical Sciences

Background/aim: The coronavirus disease 2019 (COVID-19) mostly manifests with fever, shortness of breath, and cough, has also been found to cause some neurological symptoms, such as anosmia and ageusia. The aim of the study was to present the magnetic resonance imaging (MRI) findings of patients with anosmia-hyposmia symptoms and to discuss potential mechanisms in light of these findings. Materials and methods: Of the 2412 patients diagnosed with COVID-19-related pneumonia (RT-PCR at least once + clinically confirmed) between March and December 2020, 15 patients underwent olfactory MRI to investigate the cause of ongoing anosmia/ hyposmia symptoms were included in the study. …


The Correlations Between Dynamic Contrast Enhanced Magnetic Resonance Imaging And Immunohistochemical Data In Head And Neck Squamous Cell Carcinomas, Nuri̇ Karabay, Hande Meli̇ke Bülbül, Ersoy Doğan, Ahmet Ömer İki̇z, Gökseni̇l Bülbül, Sülen Sarioğlu Jan 2022

The Correlations Between Dynamic Contrast Enhanced Magnetic Resonance Imaging And Immunohistochemical Data In Head And Neck Squamous Cell Carcinomas, Nuri̇ Karabay, Hande Meli̇ke Bülbül, Ersoy Doğan, Ahmet Ömer İki̇z, Gökseni̇l Bülbül, Sülen Sarioğlu

Turkish Journal of Medical Sciences

Background/aim: Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) can in vivo characterize tumor microvascular environment. The aim of the present study was to reveal the DCE-MRI findings and to determine the correlation between these findings and immunohistochemical data in head and neck squamous cell carcinoma (HNSCC). Materials and methods: Thirty-three patients diagnosed with primary HNSCC were evaluated retrospectively. DCE-MRI was conducted in all cases. CD34, CD105, and ki-67 expressions were analyzed with immunohistochemistry in tissue sections to determine micro-vessel density and proliferative activity. Results: The DCE-MRI is a successful technique in distinguishing tumor tissue from normal tissue. It was determined …


The Lateralization Accuracy Of Inferior Petrosal Sinus Sampling In Cushing?S Disease: Experiences Of A Tertiary Center, Eli̇f Tutku Durmuş, Ayşegül Atmaca, Fati̇h Uzunkaya, Rami̇s Çolak, Buğra Durmuş Jan 2022

The Lateralization Accuracy Of Inferior Petrosal Sinus Sampling In Cushing?S Disease: Experiences Of A Tertiary Center, Eli̇f Tutku Durmuş, Ayşegül Atmaca, Fati̇h Uzunkaya, Rami̇s Çolak, Buğra Durmuş

Turkish Journal of Medical Sciences

Background/aim: The purpose of this study is to determine the accuracy of bilateral inferior petrosal sinus sampling (IPSS) in lateralization and to investigate variables associated with accurate IPSS lateralization prediction. Materials and methods: Initially, data from 55 patients who underwent IPSS in our institution were reviewed retrospectively. IPSS lateralization and pituitary magnetic resonance imaging (MRI) results of these patients were compared with postoperative follow-up and immunohistochemical data to calculate the positive predictive values (PPVs) for IPSS and MRI. Variables likely to be associated with the accurate prediction of IPSS lateralization were analyzed. Results: Twenty-seven patients (85.2% female, mean age of …


Is Condyle Morphology A Factor For Anterior Temporomandibular Disc Displacement?, İlkay Çamlidağ, Asli Tanrivermi̇ş Sayit, Muzaffer Elmali Jan 2022

Is Condyle Morphology A Factor For Anterior Temporomandibular Disc Displacement?, İlkay Çamlidağ, Asli Tanrivermi̇ş Sayit, Muzaffer Elmali

Turkish Journal of Medical Sciences

Background/aim: To investigate morphological features of the mandibular condyle and its association with anterior temporomandibular disc displacement on sagittal oblique MRI plane. Materials and methods: One hundred and twenty patients with temporomandibular MRI examination were retrospectively involved in the study. Patients aged less than 18 years and those with severe osteoarthritis, posterior disk displacement, tumor, abscess, history of a rheumatic disease, facial trauma, and motion artifacts on images were excluded. Three radiologists evaluated all images in consensus. Temporomandibular disc locations were classified as normal, anteriorly displaced with reduction (ADr), and anteriorly displaced without reduction (ADwr) on sagittal oblique T1-weighted images. …


Pancreas And Kidney Changes In Type 2 Diabetes Patients: The Role Of Diffusion-Weightedimaging, Mehmet Hamdi̇ Şahan, Adnan Özdemi̇r, Neşe Asal, Mi̇race Yasemi̇n Karadeni̇z Bi̇lgi̇li̇, Adi̇l Doğan, Aşkin Güngüneş Jan 2021

Pancreas And Kidney Changes In Type 2 Diabetes Patients: The Role Of Diffusion-Weightedimaging, Mehmet Hamdi̇ Şahan, Adnan Özdemi̇r, Neşe Asal, Mi̇race Yasemi̇n Karadeni̇z Bi̇lgi̇li̇, Adi̇l Doğan, Aşkin Güngüneş

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to compare renal and pancreatic apparent diffusion-coefficient (ADC) values of diabetic patients and control subjects and to examine their potential association with several diabetes-related clinical parameters. Materials and methods: A total of 80 sex- and age-matched patients were included in the study. Of them, 40 were patients with type 2 diabetes and 40 were nondiabetic participants. Abdominal diffusion-weighted MRIs of both groups were retrospectively reviewed. Diabetes-related clinical parameters were recorded. Results: The difference between the mean ADC values of the patient group and the control group was significant (p = 0.012). It was …


A Newly Described Imaging Finding For Idiopathic Normal Pressure Hydrocephalus: Canhummingbird Sign Contribute To The Diagnosis?, Başak Atalay, Umut Perçem Orhan Söylemez, Hüseyi̇n Yildiz Jan 2021

A Newly Described Imaging Finding For Idiopathic Normal Pressure Hydrocephalus: Canhummingbird Sign Contribute To The Diagnosis?, Başak Atalay, Umut Perçem Orhan Söylemez, Hüseyi̇n Yildiz

Turkish Journal of Medical Sciences

Background/aim: In this study, we aimed to evaluate whether morphological changes in the mesencephalon, which were previously described as a diagnostic tool for progressive supranuclear palsy, could be associated also with idiopathic normal pressure hydrocephalus. Materials and methods: Consecutive 52 patients with a possible diagnosis of idiopathic normal pressure hydrocephalus (32 female, mean age 73.6 years) and 40 controls (23 female, mean age 72.7 years) with similar demographic characteristics were included the study. The morphologic changes in mesencephalon, hummingbird sign, and the vascular compression to mesencephalon were noted. Besides, three independent observers evaluated the imaging parameters for idiopathic normal pressure …


Diagnostic Efficacy Of Apparent Diffusion Coefficient Measurements In Differentiation Ofmalignant Intra-Axial Brain Tumors, İlker Eyüboğlu, İsmet Mi̇raç Çakir, Serdar Aslan, Ahmet Sari Jan 2021

Diagnostic Efficacy Of Apparent Diffusion Coefficient Measurements In Differentiation Ofmalignant Intra-Axial Brain Tumors, İlker Eyüboğlu, İsmet Mi̇raç Çakir, Serdar Aslan, Ahmet Sari

Turkish Journal of Medical Sciences

Background/aim: To evaluate diagnostic efficacy of the apparent diffusion coefficient measurements from tumor (ADCt) and tumor circumference hyperintensities (ADCtch) in different types of malignant intra-axial brain tumors. Materials and methods: Between April 2013 and June 2017, 125 patients (52 females (41.6%) and 73 males (58.4%); mean age: 53 years, age range: 14-81 years), who underwent diffusion-weighted imaging (DWI) with intracranial mass, were retrospectively evaluated. The mean ADCt and ADCtch values and ratios were measured. Results: Of the 125 patients, 22 (17.6%) had a low-grade glioma (LGG), 55 (44%) had a high-grade glioma (HGG), 32 (25.6%) had metastasis, and 16 (12.8%) …


Evaluation Of Schwannoma Using The 3d-Space Sequence: Comparison With The 3d-Cisssequence In 3t-Mri, Enes Gürün, İsmai̇l Akdulum, Pinar Kiliç, Ni̇l Tokgöz, Murat Uçar Jan 2021

Evaluation Of Schwannoma Using The 3d-Space Sequence: Comparison With The 3d-Cisssequence In 3t-Mri, Enes Gürün, İsmai̇l Akdulum, Pinar Kiliç, Ni̇l Tokgöz, Murat Uçar

Turkish Journal of Medical Sciences

Background/aim: The purpose of this study is to compare the diagnostic accuracy and interobserver reliability of the T2-weighted 3D-SPACE (three-dimensional sampling perfection with application-optimized contrasts by using different flip angle evolutions) sequence in comparison with T2-weighted 3D-CISS (three-dimensional constructive interference in steady state) sequences for diagnosis of schwannomas. Materials and methods: Forty patients with cerebellopontine angle (CPA), internal acoustic canal (IAC), and cochlear schwannoma who had undergone magnetic resonance imaging (MRI) using the 3D-CISS and 3D-SPACE sequences were identified. The sequences were retrospectively evaluated by two radiologists for the qualitative analyses, which were subsequently compared using the Mann-Whitney U test. …


Can Pre-Procedural Mri Signal Intensity Ratio Predict The Success Of Uterine Arteryembolization In Treatment Of Myomas?, Çağlayan Çakir, Fati̇h Kilinç, Muhammed Aki̇f Deni̇z, Sema Karakaş Jan 2021

Can Pre-Procedural Mri Signal Intensity Ratio Predict The Success Of Uterine Arteryembolization In Treatment Of Myomas?, Çağlayan Çakir, Fati̇h Kilinç, Muhammed Aki̇f Deni̇z, Sema Karakaş

Turkish Journal of Medical Sciences

Background/aim: Magnetic resonance (MR) images, signal intensity ratios calculated using region of interests (ROI) in T2W images by proportioning the dominant myoma to iliac muscle can aid patient selection and, thus, in achieving better outcomes with the uterine artery embolization (UAE) procedure. The present study investigates the association between the success of UAE treatment with signal intensity (SI) ratio of the dominant myoma to the iliac muscle in MR imaging performed prior to the procedure. Materials and methods: This is a retrospective study and included 30 patients who admitted to our clinic between February 2017 and July 2019 due to …


Tendon Of Flexor Carpi Radialis In Carpal Tunnel: A Radiologic And Cadaveric Study, Burcu Erçakmak Güneş, Alper Vatansever, Mehmet Deni̇z Demi̇ryürek, Kadri̇ye Mi̇ne Ergun, Mehmet Hakan Özsoy Jan 2021

Tendon Of Flexor Carpi Radialis In Carpal Tunnel: A Radiologic And Cadaveric Study, Burcu Erçakmak Güneş, Alper Vatansever, Mehmet Deni̇z Demi̇ryürek, Kadri̇ye Mi̇ne Ergun, Mehmet Hakan Özsoy

Turkish Journal of Medical Sciences

Background/aim: Carpal tunnel is an important anatomical passage that carries the flexor tendons into the hand. As there is still no consensus about its contents among the anatomy textbooks, the main purpose of this study was to identify the relations of the flexor carpi radialis tendon in the carpal tunnel. Materials and methods: This retrospective study was completed in April 2018 at authors' university's hospital. Seventy-four female and 44 male patients' wrists without any pathology were examined by using magnetic resonance images. The series of axial sections where the pisiform exist were evaluated by using T1 sequence and the structures …


Volume And T2 Relaxation Time Measurements Of Quadriceps Femoris And Hamstringmuscles Are Reliable And Reproducible, Şeri̇fe Şeyma Torğutalp, Ömer Özkan, Şafak Parlak Sağol, Hati̇ce Kader Karli Oğuz, Feza Korkusuz Jan 2021

Volume And T2 Relaxation Time Measurements Of Quadriceps Femoris And Hamstringmuscles Are Reliable And Reproducible, Şeri̇fe Şeyma Torğutalp, Ömer Özkan, Şafak Parlak Sağol, Hati̇ce Kader Karli Oğuz, Feza Korkusuz

Turkish Journal of Medical Sciences

Background/aim: Volume and T2 relaxation time measurements of the skeletal muscle provide quantitative information. We aimed to evaluate the interobserver reliability and the intraobserver reproducibility of measurements of volumes and T2 relaxation times of the quadriceps femoris and the hamstring muscles. Materials and methods: A cross-sectional reliability study was conducted on ten recreational athletes. The images of the quadriceps and the hamstring muscles of both limbs were obtained using a 3.0 Tesla magnetic resonance imaging (MRI) scanner. Two sports medicine specialists measured muscle volumes from a total of 2560 images and T2 relaxation times from a total of 40 images, …


Investigation Of The Effects Of Propofol/Ketamine Versus Propofol/Fentanyl On Nauseavomiting Administered For Sedation In Children Undergoing Magnetic Resonance Imaging:A Prospective Randomized Double-Blinded Study, Haci Semi̇h Gürcan, Ayşe Ülgey, Özlem Öz Gergi̇n, Si̇bel Seçki̇n Pehli̇van, Kara Mehmet Yildiz Jan 2021

Investigation Of The Effects Of Propofol/Ketamine Versus Propofol/Fentanyl On Nauseavomiting Administered For Sedation In Children Undergoing Magnetic Resonance Imaging:A Prospective Randomized Double-Blinded Study, Haci Semi̇h Gürcan, Ayşe Ülgey, Özlem Öz Gergi̇n, Si̇bel Seçki̇n Pehli̇van, Kara Mehmet Yildiz

Turkish Journal of Medical Sciences

Background/aim: In this study, we aimed to compare the effects of propofol-ketamine and propofol-fentanyl sedations on postprocedure nausea-vomiting in children undergoing magnetic resonance imaging (MRI). Materials and methods: This study included 100 pediatric patients (2-10 years old) who had propofol-ketamine and propofol-fentanyl for sedation to undergo MRI. The patients were divided into two groups, and sedation was performed through propofol-ketamine (Group K; n = 50) or propofol-fentanyl (Group F; n = 50). For sedation induction, intravenous (IV) bolus of 1.2 mg/kg propofol and 1 mg/kg ketamine were administered in Group K, IV bolus of 1.2 mg/kg propofol, and 1 µg/kg …


Magnetic Resonance Imaging Histogram Analysis Of Corpus Callosum In A Functionalneurological Disorder, Sema Baykara, Murat Baykara, Osman Mermi̇, Hanefi̇ Yildirim, Murad Atmaca Jan 2021

Magnetic Resonance Imaging Histogram Analysis Of Corpus Callosum In A Functionalneurological Disorder, Sema Baykara, Murat Baykara, Osman Mermi̇, Hanefi̇ Yildirim, Murad Atmaca

Turkish Journal of Medical Sciences

Background/aim: The aim of the present study was to examine and compare the corpus callosum (CC) via histogram analysis (HA) on T1-weighted MR images of patients diagnosed with Functional Neurological Disorder (FND) and healthy controls. Materials and methods: The study group included 19 female patients diagnosed with FND, and the control group included 20 healthy subjects. All participants were scanned with a 1.5 T MR scanner. A high-resolution structural image of the entire brain was obtained with sagittal 3D spiral fast spin echo T1-weighted images. Gray level intensity, standard deviation of the histogram, entropy, uniformity, skewness, and kurtosis values were …


Differences In Corpus Callosum Morphology Between Healthy Adolescents Andadolescents With Migraine: A Case Control Study, Mustafa Emre Akin, Ayşegül Neşe Çitak Kurt Jan 2021

Differences In Corpus Callosum Morphology Between Healthy Adolescents Andadolescents With Migraine: A Case Control Study, Mustafa Emre Akin, Ayşegül Neşe Çitak Kurt

Turkish Journal of Medical Sciences

Background/aim: This study objected to compare the measurements of corpus callosum substructures of adolescents with migraine and healthy adolescents. Materials and methods: In a case-control design, adolescents aged 12-18 years with the diagnosis of migraine and healthy control group had brain magnetic resonance imaging examination. The CC dimensions including anteroposterior length, truncus, genu and splenium widths of the case and control groups were measured and compared. Results: The sample consisted of 188 adolescents, 109 girls (58.0%), and 79 boys (42.0%). Of these 87 (46.3%) were in the migraine group and 101 (53.7%) were in the healthy control group. The mean …


Predictive Factors For Treatment Success Of Transforaminal Epidural Steroid Injection In Lumbar Disc Herniation-Induced Sciatica, Savaş Şencan, Alp Eren Çelenli̇oğlu, Ruslan Asadov, Osman Hakan Gündüz Jan 2020

Predictive Factors For Treatment Success Of Transforaminal Epidural Steroid Injection In Lumbar Disc Herniation-Induced Sciatica, Savaş Şencan, Alp Eren Çelenli̇oğlu, Ruslan Asadov, Osman Hakan Gündüz

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to identify predictive factors for treatment success in transforaminal epidural steroid injection in patients with lumbar disc herniation-induced sciatica. Materials and methods: A total of 219 patients who were diagnosed with unilateral sciatica and underwent transforaminal epidural steroid injections at the level of L4-5, L5-S1, or S1 neural foramina between March 2016 and May 2018 were retrospectively analyzed. The presence of transitional vertebrae and the grade of nerve root compression were evaluated by a radiologist. Data including age, sex, body mass index, duration of symptoms, injection levels, and pain scores were recorded. Pain …


The Efficacy Of The 3-Dimensional Vibe-Caipirinha-Dixon Technique In The Evaluation Of Pancreatic Steatosis, Ural Koç, Gökhan Ocakoğlu, Oktay Algin Jan 2020

The Efficacy Of The 3-Dimensional Vibe-Caipirinha-Dixon Technique In The Evaluation Of Pancreatic Steatosis, Ural Koç, Gökhan Ocakoğlu, Oktay Algin

Turkish Journal of Medical Sciences

Background/aim: CAIPIRINHA is a new technique in abdominal imaging. Pancreatic steatosis (PS) is a subject of increasing scientific interest. The aim of this study was to investigate the efficacy of the isotropic 3D-VIBE- CAIPIRINHA -DIXON technique on a new generation 3-tesla MR unit in the evaluation of PS.Materials and methods: In this retrospective study, the imaging findings of 49 patients with PS and 41 control subjects were examined. The pancreas-to-spleen ratio (PSR), pancreas-to-muscle ratio (PMR), and pancreatic signal intensity index (PSII) were defined as 3 new parameters and these indexes were calculated from the in-phase/out of phase 3D-VIBE- CAIPIRINHA-DIXON images. …


Posterior Fossa Horns; A New Calvarial Finding Of Mucopolysaccharidoses With Well-Known Cranial Mri Features, Çağri Damar, Betül Emi̇ne Deri̇nkuyu, Muazzez Asburçe Bi̇ke Olgaç Kiliçkaya, Mehmet Öztürk, Çi̇ğdem Öztunali, Ayşe Gül Alimli, Öznur Leman Boyunaga, Murat Uçar, Fati̇h Süheyl Ezgü, Leyla Tümer, Alp Özgün Börcek, Ahmet Siğirci Jan 2020

Posterior Fossa Horns; A New Calvarial Finding Of Mucopolysaccharidoses With Well-Known Cranial Mri Features, Çağri Damar, Betül Emi̇ne Deri̇nkuyu, Muazzez Asburçe Bi̇ke Olgaç Kiliçkaya, Mehmet Öztürk, Çi̇ğdem Öztunali, Ayşe Gül Alimli, Öznur Leman Boyunaga, Murat Uçar, Fati̇h Süheyl Ezgü, Leyla Tümer, Alp Özgün Börcek, Ahmet Siğirci

Turkish Journal of Medical Sciences

Background/aim: Mucopolysaccharidoses (MPS) are a group of hereditary metabolic diseases. The aim of this study was to share the previously unreported calvarial finding of internal hypertrophy of the occipitomastoid sutures (IHOMS) together with some other well- known cranial MRI findings in this patient series. Materials and methods: A retrospective evaluation was conducted of 80 cranial MRIs of patients who had been diagnosed and followed up with MPS from 2008 to 2019 in our center. Of these patients, 11 had Hurler, 14 had Hunter, 24 had Sanfilippo, 15 had Morquio, 14 had Maroteaux-Lamy, and 2 had Sly disease. The cranial MRIs …


Silent Cerebral Infarct In Sickle Cell Anemia Patients Of Southern Turkey, Ezgi̇ Nafi̇le Sayman, Göksel Leblebi̇satan, Şeri̇fe Leblebi̇satan, Yunus Kenan Biçakci, Yurdanur Kilinç, Adnan Barutçu Jan 2020

Silent Cerebral Infarct In Sickle Cell Anemia Patients Of Southern Turkey, Ezgi̇ Nafi̇le Sayman, Göksel Leblebi̇satan, Şeri̇fe Leblebi̇satan, Yunus Kenan Biçakci, Yurdanur Kilinç, Adnan Barutçu

Turkish Journal of Medical Sciences

Background/aim: Silent cerebral infarct (SCI) is an ischemic lesion seen before clinical signs of brain infarct and ischemic changes in brain tissue. This study aimed to detect SCI with noninvasive methods and to determine related risk factors in patients with sickle cell anemia (SCA). Materials and methods: Fifty-four SCA patients who had no history of cerebral infarct and whose neurological examinations were normal were included in this study. Brain magnetic resonance imaging (MRI) and diffusion MRI were taken and the acquired data was compared statistically. Results: SCI was detected in 11.1% (6/54) of the patients. No statistical differences in age, …


Efficacy Of Chemical Shift Mri For Differentiating Diffuse Red Bone Marrow Reconversion And Hematological Malignancies, Burcu Akman, Hati̇ce Ayça Ata Korkmaz, Ahmet Sari Jan 2019

Efficacy Of Chemical Shift Mri For Differentiating Diffuse Red Bone Marrow Reconversion And Hematological Malignancies, Burcu Akman, Hati̇ce Ayça Ata Korkmaz, Ahmet Sari

Turkish Journal of Medical Sciences

Background/aim: The main purpose of our study was to determine the efficacy of chemical shift imaging (CSI) for differentiating diffuse red bone marrow reconversion (RBMR) and hematological malignancies. We also aimed to calculate the cut-off value for these entities with similar imaging features in routine magnetic resonance (MR) sequences.Materials and methods: A total of 54 patients were included: 17 patients (31.4%) with hematological malignancies (group 1), 16 patients (29.6%) with RBMR (group 2), and 21 patients (38.0%) with no clinical and hematological malignancies (control group). Patients with no pathological data or completed two-year follow-up and children were excluded from the …


Detection Of The Differences In The Apparent Diffusion Coefficient Values In Differenthistopathological Types Of Malignant Breast Lesions And Comparison Of Cellular Region/Stroma Ratio And Histopathological Results, Nevi̇n Köremezli̇ Keski̇n, Pinar Balci, Işil Başara Akin, Esra Yavuz Gürkan, Ali̇ İbrahi̇m Sevi̇nç, Meri̇h Güray Durak, Ayça Erşen Danyeli̇ Jan 2018

Detection Of The Differences In The Apparent Diffusion Coefficient Values In Differenthistopathological Types Of Malignant Breast Lesions And Comparison Of Cellular Region/Stroma Ratio And Histopathological Results, Nevi̇n Köremezli̇ Keski̇n, Pinar Balci, Işil Başara Akin, Esra Yavuz Gürkan, Ali̇ İbrahi̇m Sevi̇nç, Meri̇h Güray Durak, Ayça Erşen Danyeli̇

Turkish Journal of Medical Sciences

Background/aim: This study aimed to compare the apparent diffusion coefficient (ADC) values of malignant breast lesions with different histopathological types on diffusion-weighted imaging (DWI) and the cellular region/stroma (CR/S) ratio and histopathological results. Materials and methods: Breast diffusion-weighted magnetic resonance findings of 59 patients were retrospectively analyzed for malignant breast lesions. The CR/S ratio was calculated using breast wide-excisional biopsy or mastectomy specimens. Results: Receiver operating characteristic analysis was performed for malignant lesions and subtypes. An ADC threshold of 1.260 × 10-3 mm2/s was set to detect invasive ductal carcinoma with 80.8% sensitivity and 81.4% specificity. An ADC threshold of …


Evaluation Of The Facial Nerve And Internal Auditory Canal Cross-Sectional Areas Onthree-Dimensional Fast Imaging Employing Steady-State Acquisition Magnetic Resonanceimaging In Bell's Palsy, Ebru Ozan Sanhal, Hande Arslan Jan 2018

Evaluation Of The Facial Nerve And Internal Auditory Canal Cross-Sectional Areas Onthree-Dimensional Fast Imaging Employing Steady-State Acquisition Magnetic Resonanceimaging In Bell's Palsy, Ebru Ozan Sanhal, Hande Arslan

Turkish Journal of Medical Sciences

Background/aim: This study aimed to evaluate the facial nerve (FN) and internal auditory canal (IAC) on three-dimensional fast imaging employing steady-state acquisition (3D-FIESTA) magnetic resonance imaging (MRI) to define possible structural differences in cases of Bell's palsy (BP). Materials and methods: Fifty-six patients presenting with BP were included in this study. The measurements of the diameters and the cross-sectional areas (CSAs) of the FNs and IACs obtained on 3D-FIESTA MRI both on the affected and unaffected sides of all patients were compared. Results: A significant difference was found between affected and unaffected sides of the patients in terms of the …


Patient Symptoms And Magnetic Resonance Imaging Correlationin Temporomandibular Joint Internal Derangement, Osman Akdağ, Gökçe Yildiran, Mehtap Karameşe Jan 2018

Patient Symptoms And Magnetic Resonance Imaging Correlationin Temporomandibular Joint Internal Derangement, Osman Akdağ, Gökçe Yildiran, Mehtap Karameşe

Turkish Journal of Medical Sciences

Background/aim: Temporomandibular joint (TMJ) internal derangements consist of reduced and nonreduced disc dislocations and are often diagnosed by magnetic resonance imaging (MRI). The main symptom of these derangements is TMJ pain. This study aimed to evaluate whether there is a correlation between TMJ pain and disc dislocation. Materials and methods: One hundred and four patients experiencing pain were evaluated retrospectively with the examination charts that we use routinely in our clinics and MRI. Patients were separated into two main groups as MRI(+) and MRI(-) groups according to their internal derangement findings in MRI. Mean VAS levels were compared between these …


Evaluation And Comparison Of Radiologic-Pathologic Findings In Invasive Cribriform Carcinoma Of The Breast, Pinar Balci, Işil Başara Akin, Nevi̇n Köremezli̇, Meri̇h Güray Durak, Canan Altay, Naci̇ye Si̇nem Gezer, Ali̇ İbrahi̇m Sevi̇nç Jan 2017

Evaluation And Comparison Of Radiologic-Pathologic Findings In Invasive Cribriform Carcinoma Of The Breast, Pinar Balci, Işil Başara Akin, Nevi̇n Köremezli̇, Meri̇h Güray Durak, Canan Altay, Naci̇ye Si̇nem Gezer, Ali̇ İbrahi̇m Sevi̇nç

Turkish Journal of Medical Sciences

Background/aim: This study aimed to report invasive cribriform carcinoma (ICC) with radiological and histopathologic correlations. Materials and methods: Seventy patients with ICC were classified into two groups; pure ICC patients and patients with >50% cribriform carcinoma component were included in group 1, while patients with <50% cribriform carcinoma component were included in group 2. All patients were reviewed according to American College of Radiology (ACR) breast imaging reporting and data system (BI-RADS) lexicon of mammography (MG), ultrasonography (US), and magnetic resonance imaging (MRI). One-way analysis of variance tests and t-tests were used for analysis. P < 0.05 was accepted as statistically significant. Results: Eighteen patients were in group 1 and 52 were in group 2. All patients had MG and US, while 24 patients needed MRI. According to MG ACR BI-RADS lexicon evaluation, irregular shape, spiculated margin and indistinct margin, and high density were statistically significantly higher in group 2 than the other group (respectively P = 0.001, P = 0.001, and P= 0.04). Equal density was statistically significantly higher in group 1 than the other group (P = 0.008). According to US ACR BI-RADS lexicon evaluation, irregular shape, spiculated margins, angular margins, microlobulated margins, and nonparallel orientation were more common US findings in group 2 than the other group (respectively P = 0.001, P = 0.001, P = 0.003, P = 0.04, and P = 0.04). The rate of parallel orientation was higher in group 1 than the other group (P = 0.02). Conclusion: Few cases showed benign characteristics and most ICCs appear with typical features of malignancy. Radiologic features of ICC could be better understood and would be helpful for radiologists in diagnosing this rare type of malignancy.


Evaluation Of Renal Anomalies, Inferior Vena Cava Variations, And Left Renalvein Variations By Lumbar Magnetic Resonance Imaging In 3000 Patients, Alper Di̇lli̇, Fatma Sevi̇n Coşar Ayaz, Kezi̇ban Karacan, Kürşad Zengi̇n, Ümi̇t Yaşar Ayaz, Osman Rai̇f Karabacak, Baki̇ Heki̇moğlu Jan 2017

Evaluation Of Renal Anomalies, Inferior Vena Cava Variations, And Left Renalvein Variations By Lumbar Magnetic Resonance Imaging In 3000 Patients, Alper Di̇lli̇, Fatma Sevi̇n Coşar Ayaz, Kezi̇ban Karacan, Kürşad Zengi̇n, Ümi̇t Yaşar Ayaz, Osman Rai̇f Karabacak, Baki̇ Heki̇moğlu

Turkish Journal of Medical Sciences

Background/aim: The variations and anomalies of the kidneys besides the variations of the inferior vena cava (IVC) and left renal vein (LRV) are mostly asymptomatic, but they carry potential risks particularly during retroperitoneal surgery and radiological interventions. Our aim was to find the frequencies, types, and sex distribution of renal anomalies and variations of the IVC and LRV utilizing magnetic resonance imaging (MRI). Materials and methods: Between November 2010 and April 2011, a retrospective study was conducted including lumbar spinal MRI of 3000 consecutive patients (1869 females and 1131 males) with a median age of 54 years (range: 9-78 years). …


Cardiac Mri And 3d Contrast-Enhanced Mr Angiography In Pediatric And Young Adult Patients With Turner Syndrome, Hasan Yi̇ği̇t, Aşan Önder, Senem Özgür, Zehra Aycan, Selmi̇n Karademi̇r, Vehbi̇ Doğan Jan 2017

Cardiac Mri And 3d Contrast-Enhanced Mr Angiography In Pediatric And Young Adult Patients With Turner Syndrome, Hasan Yi̇ği̇t, Aşan Önder, Senem Özgür, Zehra Aycan, Selmi̇n Karademi̇r, Vehbi̇ Doğan

Turkish Journal of Medical Sciences

Background/aim: This study aimed to describe the spectrum and frequency of cardiovascular abnormalities in pediatric and young adult patients with Turner syndrome (TS) using cardiac MRI and MR angiography. Materials and methods: This prospective study consisted of 47 female patients of pediatric age and young adults with a karyotypically confirmed diagnosis of TS. All patients underwent cardiac MRI and contrast-enhanced MR angiography. A second examination after 9-26 months was performed for 28 of these patients. Results: Elongation of the transverse aortic arch (ETA) was the most frequent abnormality with a rate of 37%. The rate of partial anomalous pulmonary venous …


Comparison Of Disc And Body Volumes In Degenerated And Nondegenerated Lumbar Discs: A Stereological Study, Tuncay Kaner, Ahmet Songur, Muhsi̇n Toktaş, Ozan Alper Alkoç, Olcay Eser, Mustafa Efendi̇oğlu Jan 2014

Comparison Of Disc And Body Volumes In Degenerated And Nondegenerated Lumbar Discs: A Stereological Study, Tuncay Kaner, Ahmet Songur, Muhsi̇n Toktaş, Ozan Alper Alkoç, Olcay Eser, Mustafa Efendi̇oğlu

Turkish Journal of Medical Sciences

To carry out comparison and correlation analyses of the intervertebral disc (IVD) and vertebral body (VB) volumes in magnetic resonance (MR) images of patients with degenerated and nondegenerated lumbar discs. Materials and methods: MR images were examined retrospectively in 93 patients. Lumbar VB and IVD volumes in T1-T2 weighted sagittal MR images were calculated via the Cavalieri method, a stereological method. Volumetric changes in degenerated and nondegenerated discs were compared. Results: The percentages of degenerated IVDs were 12.9%, 12.9%, 28%, 50.5%, and 52% in discs from levels L1 to L5, respectively. There were no differences in VB volumes between the …