Radiology Commons^™

Accuracy Of Magnetic Resonance Imaging In Pretreatment Lymph Node Assessment For Gynecological Malignancies, Saira Naz Sufian, Imrana Masroor, Waseem Mirza, Zainab Hussain, Saima Hafeez, Zafar Sajjad

Department of Radiology

Objective: To determine the accuracy of magnetic resonance imaging (MRI) in detection of metastasis in pelvic and para-aortic lymph nodes from different gynecological malignancies.MATERIALS AND Methods: This retrospective cross sectional analytic study was conducted at the Department of Diagnostic Radiology, Aga Khan University Hospital Karachi Pakistan from January 2011 to December 2012. A sample of 48 women, age range between 20-79 years, fulfilling inclusion criteria were included. All patients had histopathologically proven gynecological malignancies in the cervix, endometrium or ovary and presented for a pretreatment MRI to our radiology department.Results: MRI was 100% sensitive and had a 100% positive predictive …

Mdct Of Small Bowel Obstruction: How Reliable Are Oblique Reformatted Images In Localizing Point Of Transition?, Wasim Memon, Yasir Jamil Khattak, Tariq Alam, Luca Maria Sconfienza, Muhammad Awais, Shayan Sirat Maheen Anwar

Department of Radiology

The goal of this study is to prospectively assess the additional value of oblique reformatted images for localizing POT, having surgery as a reference standard. Materials and Methods. 102 consecutive patients with suspected small bowel obstruction (SBO) underwent 64-slice multidetector row CT (MDCT) using surgical findings as reference standard. Two independent GI radiologists reviewed the CT scans to localize the exact POT by evaluating axial images (data set A) followed by axial, coronal, and oblique MPR images. CT findings were compared to surgical findings in terms of diagnostic performance. McNemar's test was used to detect any statistical difference in POT …

Prevalence Of Significant Liver Fibrosis In Patients With Hiv Monoinfection Compared To Those With Hiv-Hepatitis B Coinfection As Assessed By Shear Wave Elastography, Samuel Nguku

Master of Medicine in Imaging and Diagnostic Radiology

Background: Liver disease is an emerging management problem in human immunodeficiency virus (HIV) infected patients. The incidence of chronic Hepatitis B infection, which accelerates the progression of chronic liver disease and development of liver fibrosis, is ten times higher in patients with HIV than the general population. Staging of liver fibrosis provides essential information in management of these patients. Objective: To determine the prevalence of significant liver fibrosis in patients with HIV mono-infection versus those with HIV-HBV co-infection as assessed with shear wave elastography (SWE). Methods: This was a cross-sectional study whereby HIV infected patients attending the HIV clinic at …

Cervical Cancer Histology Image Feature Extraction And Classification, Peng Guo

Masters Theses

"Cervical cancer, the second most common cancer affecting women worldwide and the most common in developing countries can be cured if detected early and treated. Expert pathologists routinely visually examine histology slides for cervix tissue abnormality assessment. In previous research, an automated, localized, fusion-based approach was investigated for classifying squamous epithelium into Normal, CIN1, CIN2, and CIN3 grades of cervical intraepithelial neoplasia (CIN) based on image analysis of 62 digitized histology images obtained through the National Library of Medicine. In this research, CIN grade assessments from two pathologists are analyzed and are used to facilitate atypical cell concentration feature development …

Use Of An Electrical Impedance Tomography Method To Detect And Track Fractures In A Gelatin Medium, Evan G. Lucas

Dissertations, Master's Theses and Master's Reports - Open

Electrical impedance tomography is applied to the problem of detecting, locating, and tracking fractures in ballistics gelatin. The hardware developed is intended to be physically robust and based on off-the-shelf hardware. Fractures were created in two separate ways: by shooting a .22 caliber bullet into the gelatin and by injecting saline solution into the gelatin. The .22 caliber bullet created an air gap, which was seen as an increase in resistivity. The saline solution created a fluid filled gap, which was seen as a decrease in resistivity. A double linear array was used to take data for each of the …

A Nonrigid Registration Method For Correcting Brain Deformation Induced By Tumor Resection, Yixun Liu, Chengjun Yao, Fotis Drakopoulos, Jinsong Wu, Liangfu Zhou, Nikos Chrisochoides

Computer Science Faculty Publications

Purpose: This paper presents a nonrigid registration method to align preoperative MRI with intraoperative MRI to compensate for brain deformation during tumor resection. This method extends traditional point-based nonrigid registration in two aspects: (1) allow the input data to be incomplete and (2) simulate the underlying deformation with a heterogeneous biomechanical model.

Methods: The method formulates the registration as a three-variable (point correspondence, deformation field, and resection region) functional minimization problem, in which point correspondence is represented by a fuzzy assign matrix; Deformation field is represented by a piecewise linear function regularized by the strain energy of a heterogeneous biomechanical …

Three‐Dimensional Brain Mri For Dbs Patients Within Ultra‐Low Radiofrequency Power Limits, Subhendra N. Sarkar, Efstathios Papavassiliou, David Hackney, David Alsop, Ananth Madhuranthakam, Ludy Shih, Reed Busse, Susan Laruche, Rafeeque Bhadelia

Publications and Research

Background: For patients with deep brain stimulators (DBS), local absorbed radiofrequency (RF) power is unknown and is much higher than what the system estimates. We developed a comprehensive, highquality brain magnetic resonance imaging (MRI) protocol for DBS patients utilizing three-dimensional (3D) magnetic resonance sequences at very low RF power. Methods: Six patients with DBS were imaged (10 sessions) using a transmit/receive head coil at 1.5 Tesla with modified 3D sequences within ultra-low specific absorption rate (SAR) limits (0.1 W/kg) using T2, fast fluid-attenuated inversion recovery (FLAIR) and T1- weighted image contrast. Tissue signal and tissue contrast from the low-SAR images …

Labrad : Vol 39, Issue 2 - December 2013, Aga Khan University Hospital, Karachi

LABRAD - Departments of Pathology & Laboratory Medicine and Radiology Archives

• Diagnosis of Inborn Errors of Metabolism in Pakistan
• Inherited Metabolic Disorders-Presenting as Metabolic Emergencies
• Role of Biochemical Genetics Laboratary in Evaluation of IEM
• Amino Acid Chromatography for the Diagnosis of Inborn Error of Metabolism
• Polymorphism in Methylenetetrahydrofolate Reductase (MTHFR) Gene
• Diagnosis of Tyrosinemia Type I
• Congential Hypothyroidism
• Congential Adrenal Hyperplasia, An Insight of Laboratory
• Inaugration Ceremony of Section of biochemical Genetics Laboratory

Outcome Of Radiologically Placed Tunneled Haemodialysis Catheters, Raza Sayani, Muhammad Anwar, Tanveer-Ul-Haq, Nauman Al-Qamari, Muhammad Asif Bilal

Department of Radiology

Objective: To study the outcome of radiologically placed double lumen tunneled haemodialysis catheters for the management of renal failure.STUDY Design: Case series.PLACE AND DURATION OF STUDY: Interventional Suite of Radiology Department at the Aga Khan University Hospital, Karachi, from April 2010 to June 2011.METHODOLOGY: All consecutive patients who were referred to the department of radiology by the nephrologists for double lumen tunneled haemodialysis catheter (Permacath) placement during the study period were included. Patients with septicemia, those for whom follow-up was not available, those coming for catheter exchange or who died due to a noncatheter related condition were excluded. A radio-opaque, …

Scanned Ion Beam Therapy For Thoracic Tumors, John Gordon Eley

Dissertations and Theses (Open Access)

Although frequently cured of Hodgkin lymphoma, adolescents and young adults can develop radiation induced second cancers. These patients could potentially benefit from scanned ion radiotherapy yet likely would require motion mitigation strategies. In theory, four-dimensional (4D) optimization of ion beam fields for individual motion states of respiration can enable superior sparing of healthy tissue near moving targets, compared to other motion mitigation strategies. Furthermore, carbon-ion therapy can sometimes provide greater relative biological effectiveness (RBE) for cell sterilization in a target but nearly equivalent RBE in tissue upstream of the target, compared to proton therapy. Thus, we expected that for some …

Sex Determination Using Discriminant Function Analysis In Hispanic Children And Adolescents: A Lateral Cephalometric Study, Alyssa E. Sprowl

UNLV Theses, Dissertations, Professional Papers, and Capstones

Lateral cephalometric radiographs have been used for years to help diagnose skeletal and dental patterns in Orthodontics. Within the last decade, these radiographs have caught the interest of the department of Anthropology for the identification of gender within the adult and adolescent population. Numerous publications have been made but failed to identify sexual dimorphism in the pre-adolescent population. 303 lateral cephalograms of pre and post Latino adolescence age ranging from 6.5 to 17.9 years old were obtained from University of Nevada, Las Vegas (UNLV) digital database. 25 variables were identified and plotted with all linear and angular measurements transferred into …

Hirayama Disease, A Rare Cause Of Posture Related Cord Compression: A Case Report From Radiological Perspective, Shumaila Arooj, Fatima Mubarak, Muhammad Azeemuddin, Zafar Sajjad, Wasey Jilani

Department of Radiology

Hirayama Disease is a disease of young adults lying in the age group between twenty to thirty years. It is an extremely uncommon disorder. Its other synonyms are juvenile muscular atrophy of the distal upper extremity (JMADUE) or monomelic amyotrophy (MMA). A previously healthy 25-year-old man presented with gradually increasing weakness in both hands for the past few years. There was neither history of trauma nor family history of neuromuscular disease. MRI was advised. Routine cervical sagittal MR images (Non-flexion or extension) revealed cord flattening and atrophy at C5 to C7 levels.There was evidence of syrinx. Flexion MRI was performed …

Hot Topics In Education, Michael Hartman

Faculty Works: AHS (2004-2023)

Presented at Society of Diagnostic Medical Sonography Annual Conference (2013) in Las Vegas, NV

Plan B Topic: Annotated Resource List, Payton Roberts

Undergraduate Research Award

No abstract provided.

An Organization-Wide Service Improvement Approach, Jennifer Jasmine Arfaa, Phd, Mhsa, Cynthia Line, Phd, Nora Kramer, Msn, Rn, Karen Montoro, Rn, Richard D. Blob,, Maria Francesco, Jaime Stazi, Rn, Elisabeth Kunkel, Md, Susan Krekun, Md, Lizanne Mason, Rn, Kathy Evans, Rn, Lorraine Weikel, Rn, Ann D. Clark, Ms, Otr/L, Ray Wisniewski, Teresa Heavens

Department of Nursing papers and presentations

APPROACH TO PROBLEM SOLVING

High priority index questions from HCAHPS and Press Ganey surveys, including overall ratings, communication with RNs and MDs, hospital environment and response to concerns and complaints, were targeted for improvement. These high priority indices served as the basis for redesigning Patient Services using a multi-faceted approach to improve patients’ experiences.

At Thomas Jefferson University Hospital (TJUH), high performance on the Patient Experiences of Care Survey has been driven by a successful multi-tiered approach to patient services:

·Hospital leadership guided and implemented new approaches to ensure excellence in patient services is an ever-present and obtainable goal

·Physician …

Indigenously Developed Close Delivery System For Oral Iodine-131 Therapy: Nominal Cost But Phenomenal Protection., Imran A Shah

Department of Radiology

Abstract

BACKGROUND:

Administration of radiopharmaceuticals through intravenous and oral routes is the major source of radiation exposure to nuclear medicine (NM) technologists. Adopting new strategies to minimize radiation exposure is an important step toward safe practice in nuclear pharmacy.

MATERIALS AND METHODS:

We have indigenously developed a relatively close delivery system for oral administration of radioiodine-131 ((131)I) to minimize radiation exposure to the technologists.

RESULTS:

The efficacy of this indigenously developed close system was assessed upon 23 patients who were given (131)I therapies for benign (13 patients) and malignant thyroid disorders (10 patients). There was 64 ± 6% (P < 0.05) reduction in exposure rate using indigenously developed delivery system.

CONCLUSION: …

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An Unsuspected Bleeding Meckel's Diverticulum In An Adult Detected On Mesenteric Angiography, Muhammad Ali, Raza Sayani, Muhammad Azeemuddin, Tanveer-Ul-Haq, Rizwan Khan

Department of Radiology

Meckel's diverticulum is usually asymptomatic and found in almost 2% of the population. Haemorrhage from a Meckel's diverticulum is common in children but rare in adults. Here we report a case of 20 years old male with recurrent gastrointestinal bleeding. Meckel's diverticulum was diagnosed due to abnormal vascularity on mesenteric angiography and embolization was performed. Diagnosis was correlated with other radiological imaging and later elective resection was performed. This case is reported to emphasize the potential role of mesenteric angiography in the detection and management of bleeding Meckel's diverticulum and correlation with other radiological imaging.

Learning From Errors In Radiology To Improve Patient Safety, Shaista Afzal Saeed, Imrana Masroor, Gulnaz Shafqat

Department of Radiology

Objective: To determine the views and practices of trainees and consultant radiologists about error reporting.STUDY Design: Cross-sectional survey.PLACE AND DURATION OF STUDY: Radiology trainees and consultant radiologists in four tertiary care hospitals in Karachi approached in the second quarter of 2011.METHODOLOGY: Participants were enquired as to their grade, sub-specialty interest, whether they kept a record/log of their errors (defined as a mistake that has management implications for the patient), number of errors they made in the last 12 months and the predominant type of error. They were also asked about the details of their department error meetings. All duly completed …

Cardiac Risk Factors And Risk Scores Vs Cardiac Computed Tomography Angiography: A Prospective Cohort Study For Triage Of Ed Patients With Acute Chest Pain., Ethan J Halpern, Jacob P Deutsch, Maria M Hannaway, Adrian T Estepa, Anand S Kenia, Kenneth J Neuburger, David C Levin

Department of Radiology Faculty Papers

OBJECTIVE: The objective of the study is to evaluate cardiac risk factors and risk scores for prediction of coronary artery disease (CAD) and adverse outcomes in an emergency department (ED) population judged to be at low to intermediate risk for acute coronary syndrome.

METHODS: Informed consent was obtained from consecutive ED patients who presented with chest pain and were evaluated with coronary computed tomography angiography (cCTA). Cardiac risk factors, clinical presentation, electrocardiogram, and laboratory studies were recorded; the Thrombolysis in Myocardial Infarction (TIMI) and Global Registry of Acute Coronary Events (GRACE) scores were tabulated. Coronary computed tomography angiography findings were …

Consistent Surgeon Evaluations Of Three-Dimensional Rendering Of Pet/Ct Scans Of The Abdomen Of A Patient With A Ductal Pancreatic Mass., Matthew E Wampole, John C Kairys, Edith P Mitchell, Martha L Ankeny, Mathew L Thakur, Eric Wickstrom

Department of Biochemistry and Molecular Biology Faculty Papers

Two-dimensional (2D) positron emission tomography (PET) and computed tomography (CT) are used for diagnosis and evaluation of cancer patients, requiring surgeons to look through multiple planar images to comprehend the tumor and surrounding tissues. We hypothesized that experienced surgeons would consistently evaluate three-dimensional (3D) presentation of CT images overlaid with PET images when preparing for a procedure. We recruited six Jefferson surgeons to evaluate the accuracy, usefulness, and applicability of 3D renderings of the organs surrounding a malignant pancreas prior to surgery. PET/CT and contrast-enhanced CT abdominal scans of a patient with a ductal pancreatic mass were segmented into 3D …