Combined Pulmonary Venous Thromboembolism And Renal Artery Thrombosis In A Patient With Non-Small Cell Lung Cancer,
2014
Northwell Health
Combined Pulmonary Venous Thromboembolism And Renal Artery Thrombosis In A Patient With Non-Small Cell Lung Cancer, G. Mavani, S. Machnicki, R. Lavie
Journal Articles
No abstract provided.
Internal Maxillary Artery-Middle Cerebral Artery Bypass: Infratemporal Approach For Subcranial-Intracranial (Sc-Ic) Bypass,
2014
Hofstra Northwell School of Medicine
Internal Maxillary Artery-Middle Cerebral Artery Bypass: Infratemporal Approach For Subcranial-Intracranial (Sc-Ic) Bypass, E. Nossek, P. Costantino, M. Eisenberg, A. R. Dehdashti, A. Setton, D. J. Chalif, R. A. Ortiz, D. J. Langer
Journal Articles
BACKGROUND:Internal maxillary artery (IMax)-middle cerebral artery (MCA) bypass has been recently described as an alternative to cervical extracranial-intracranial bypass. This technique uses a keyhole craniectomy in the temporal fossa that requires a technically challenging end-to-side anastomosis.OBJECTIVE:To describe a lateral subtemporal craniectomy of the middle cranial fossa floor to facilitate wide exposure of the IMax to facilitate bypass.METHODS:Orbitozygomatic osteotomy is used followed by frontotemporal craniotomy and subsequently laterotemporal fossa craniectomy, reaching its medial border at a virtual line connecting the foramen rotundum and foramen ovale. The IMax was identified by using established anatomic landmarks, neuronavigation, and micro Doppler probe (Mizuho Inc. …
Mirror Image Artifact Mimicking Heterotopic Pregnancy On Transvaginal Ultrasound: Case Series,
2014
Hofstra Northwell School of Medicine
Mirror Image Artifact Mimicking Heterotopic Pregnancy On Transvaginal Ultrasound: Case Series, R. Malhotra, R. M. Bramante, M. Radomski, M. Nelson
Journal Articles
Vaginal bleeding in early pregnancy is a common emergency department complaint. Point-of-care ultrasound is a useful tool to evaluate for intrauterine ectopic pregnancy. Emergency physicians performing these studies need to be cognizant of artifacts produced by ultrasound technology, as they can lead to misdiagnosis. We present two cases where mirror-image artifacts initially led to a concern for heterotopic pregnancies but were excluded on further imaging.
Diagnosis Of Abnormal Biliary Copper Excretion By Positron Emission Tomography With Targeting Of (64)Copper-Asialofetuin Complex In Lec Rat Model Of Wilson's Disease,
2014
Zucker School of Medicine at Hofstra/Northwell
Diagnosis Of Abnormal Biliary Copper Excretion By Positron Emission Tomography With Targeting Of (64)Copper-Asialofetuin Complex In Lec Rat Model Of Wilson's Disease, R. Bahde, S. Kapoor, K. K. Bhargava, C. J. Palestro, S. Gupta
Journal Articles
Identification by molecular imaging of key processes in handling of transition state metals, such as copper (Cu), will be of considerable clinical value. For instance, the ability to diagnose Wilson's disease with molecular imaging by identifying copper excretion in an ATP7B-dependent manner will be very significant. To develop highly effective diagnostic approaches, we hypothesized that targeting of radiocopper via the asialoglycoprotein receptor will be appropriate for positron emission tomography, and examined this approach in a rat model of Wilson's disease. After complexing (64)Cu to asialofetuin we studied handling of this complex compared with (64)Cu in healthy LEA rats and diseased …
Ct Perfusion For Detection Of Delayed Cerebral Ischemia In Aneurysmal Subarachnoid Hemorrhage: A Systematic Review And Meta-Analysis,
2014
Zucker School of Medicine at Hofstra/Northwell
Ct Perfusion For Detection Of Delayed Cerebral Ischemia In Aneurysmal Subarachnoid Hemorrhage: A Systematic Review And Meta-Analysis, D. I. A. Mir, A. Gupta, A. Dunning, L. Puchi, C. L. Robinson, H. A. B. Epstein, P. C. Sanelli
Journal Articles
BACKGROUND AND PURPOSE: Delayed cerebral ischemia is a significant cause of morbidity and mortality after aneurysmal SAH, leading to poor outcomes. The purpose of this study was to evaluate the usefulness of CTP in determining delayed cerebral ischemia in patients with aneurysmal SAH. MATERIALS AND METHODS: We conducted a systematic review evaluating studies that assessed CTP in patients with aneurysmal SAH for determining delayed cerebral ischemia. Studies using any of the following definitions of delayed cerebral ischemia were included in the systematic review: 1) new onset of clinical deterioration, 2) cerebral infarction identified on follow-up CT or MR imaging, and …
Nuclear Medicine And The Failed Joint Replacement: Past, Present, And Future,
2014
Zucker School of Medicine at Hofstra/Northwell
Nuclear Medicine And The Failed Joint Replacement: Past, Present, And Future, C. J. Palestro
Journal Articles
Soon after the introduction of the modern prosthetic joint, it was recognized that radionuclide imaging provides useful information about these devices. The bone scan was used extensively to identify causes of prosthetic joint failure. It became apparent, however, that although sensitive, regardless of how the images were analyzed or how it was performed, the test was not specific and could not distinguish among the causes of prosthetic failure. Advances in anatomic imaging, notably cross sectional modalities, have facilitated the diagnosis of many, if not most, causes of prosthetic failure, with the important exception of infection. This has led to a …
Traumatic Axillary Artery Pseudoaneurysm Treated With Intravascular Balloon Occlusion And Percutaneous Thrombin Injection,
2014
Wright State University - Main Campus
Traumatic Axillary Artery Pseudoaneurysm Treated With Intravascular Balloon Occlusion And Percutaneous Thrombin Injection, Maria Carratola, Priti Parikh, Kathryn M. Tchorz, Shannon Kauffman
Department of Surgery Faculty Publications
Axillary artery pseudoaneurysms are relatively rare, with few reported cases found in the literature. Furthermore, treatment with percutaneous thrombin injection has not yet been reported. We report the case of a 59-year-old man with a large (10 cm) post-traumatic pseudoaneurysm of the left axillary artery found five weeks after a motorcycle crash. The patient sustained multiple injuries, including fractures of the left scapula and clavicle. Edema was observed at the time of diagnosis. Arteriography with successful ultrasound-guided percutaneous thrombin injection was undertaken. The patient experienced no complications after the procedure.
Appropriate Use Of Ct Perfusion Following Aneurysmal Subarachnoid Hemorrhage: A Bayesian Analysis Approach,
2014
Zucker School of Medicine at Hofstra/Northwell
Appropriate Use Of Ct Perfusion Following Aneurysmal Subarachnoid Hemorrhage: A Bayesian Analysis Approach, R. P. Killeen, A. Gupta, H. Delaney, C. E. Johnson, A. J. Tsiouris, M. E. Fink, H. S. Mangat, A. Z. Segal, A. I. Mushlin, P. C. Sanelli, +1 Additional Author
Journal Articles
These investigators evaluated the test characteristics of CTP in patients with SAH for detection of delayed cerebral ischemia. Ninety-seven patients were assessed with CTP for ischemia and with DSA for vasospasm. The authors concluded that positive CTP findings identified patients who should be carefully considered for induced hypertension, hypervolemia, and hemodilution and/or intra-arterial therapy while negative CTP findings are useful in guiding a no-treatment decision. BACKGROUND AND PURPOSE: In recent years CTP has been used as a complementary diagnostic tool in the evaluation of delayed cerebral ischemia and vasospasm. Our aim was to determine the test characteristics of CTP for …
Cost-Effectiveness Of Ct Angiography And Perfusion Imaging For Delayed Cerebral Ischemia And Vasospasm In Aneurysmal Subarachnoid Hemorrhage,
2014
Zucker School of Medicine at Hofstra/Northwell
Cost-Effectiveness Of Ct Angiography And Perfusion Imaging For Delayed Cerebral Ischemia And Vasospasm In Aneurysmal Subarachnoid Hemorrhage, P. C. Sanelli, A. Pandya, A. Z. Segal, A. Gupta, S. Hurtado-Rua, J. Ivanidze, K. Kesavabhotla, D. Mir, A. I. Mushlin, M. G. Hunink
Journal Articles
BACKGROUND AND PURPOSE: Delayed cerebral ischemia and vasospasm are significant complications following SAH leading to cerebral infarction, functional disability, and death. In recent years, CTA and CTP have been used to increase the detection of delayed cerebral ischemia and vasospasm. Our aim was to perform comparative-effectiveness and cost-effectiveness analyses evaluating CTA and CTP for delayed cerebral ischemia and vasospasm in aneurysmal SAH from a health care payer perspective. MATERIALS AND METHODS: We developed a decision model comparing CTA and CTP with transcranial Doppler sonography for detection of vasospasm and delayed cerebral ischemia in SAH. The clinical pathways were based on …
Potholes And Molehills: Bias In The Diagnostic Performance Of Diffusion-Tensor Imaging In Concussion,
2014
Zucker School of Medicine at Hofstra/Northwell
Potholes And Molehills: Bias In The Diagnostic Performance Of Diffusion-Tensor Imaging In Concussion, R. Watts, A. Thomas, C. G. Filippi, J. P. Nickerson, K. Freeman
Journal Articles
PURPOSE: To investigate the extent of bias in a clinical study involving "pothole analysis" of diffusion-tensor imaging (DTI) data used to quantify white matter lesion load in diseases with a heterogeneous spatial distribution of pathologic findings, such as mild traumatic brain injury (TBI), and create a mathematical model of the bias. MATERIALS AND METHODS: Use of the same reference population to define normal findings and make comparisons with a patient group introduces bias, which potentially inflates reported diagnostic performance. In this institutional review board-approved prospective observational cohort study, DTI data were obtained in 20 patients admitted to the emergency department …
Radiation Absorbed Dose To The Basal Ganglia From Dopamine Transporter Radioligand F-18-Fpcit,
2014
Hofstra Northwell School of Medicine
Radiation Absorbed Dose To The Basal Ganglia From Dopamine Transporter Radioligand F-18-Fpcit, W. Robeson, V. Dhawan, Y. L. Ma, D. Bjelke, C. Margouleff, T. Chaly, D. Eidelberg
Journal Articles
Our previous dosimetry studies have demonstrated that for dopaminergic radiotracers, F-18-FDOPA and F-18-FPCIT, the urinary bladder is the critical organ. As these tracers accumulate in the basal ganglia (BG) with high affinity and long residence times, radiation dose to the BG may become significant, especially in normal control subjects. We have performed dynamic PET measurements using F-18-FPCIT in 16 normal adult subjects to determine if in fact the BG, although not a whole organ, but a well-defined substructure, receives the highest dose. Regions of interest were drawn over left and right BG structures. Resultant time-activity curves were generated and used …
Near-Infrared Imaging Of Adoptive Immune Cell Therapy In Breast Cancer Model Using Cell Membrane Labeling,
2014
Virginia Commonwealth University
Near-Infrared Imaging Of Adoptive Immune Cell Therapy In Breast Cancer Model Using Cell Membrane Labeling, Fatma M. Youniss, Gobalakrishnan Sundaresan, Laura J. Graham, Li Wang, Collin R. Berry, Gajanan K. Dewkar, Purnima Jose, Harry D. Bear, Jamal Zweit
Radiology Publications
The overall objective of this study is to non-invasively image and assess tumor targeting and retention of directly labeled T-lymphocytes following their adoptive transfer in mice. T-lymphocytes obtained from draining lymph nodes of 4T1 (murine breast cancer cell) sensitized BALB/C mice were activated in-vitro with Bryostatin/Ionomycin for 18 hours, and were grown in the presence of Interleukin-2 for 6 days. T-lymphocytes were then directly labeled with 1,1-dioctadecyltetramethyl indotricarbocyanine Iodide (DiR), a lipophilic near infrared fluorescent dye that labels the cell membrane. Assays for viability, proliferation, and function of labeled T-lymphocytes showed that they were unaffected by DiR labeling. The DiR …
Gossypiboma Diagnosed Fifteen Years After A Cesarean Section: A Case Report,
2014
Aga Khan University
Gossypiboma Diagnosed Fifteen Years After A Cesarean Section: A Case Report, Abdul Rehman, Noor Ul-Ain Baloch, Muhammad Awais
Department of Biological & Biomedical Sciences
Gossypiboma, a retained surgical sponge, is a rare complication following any surgical procedure and is primarily a result of human error. Such patients often have vague clinical presentations and the diagnosis often comes as a surprise. We present the case of a 40-year-old woman who had a long-standing history of lower abdominal discomfort. She was diagnosed with a gossypiboma fifteen years after a cesarean section. All general physicians, surgeons and radiologists must be aware of this rare but clinically significant entity.
Utility Of Microwave Radiometry For Diagnostic And Therapeutic Applications Of Non-Invasive Temperature Monitoring,
2014
Thomas Jefferson University
Utility Of Microwave Radiometry For Diagnostic And Therapeutic Applications Of Non-Invasive Temperature Monitoring, Paul R. Stauffer, Dario B. Rodrigues, Paolo F. Maccarini
Department of Radiation Oncology Faculty Papers
This paper describes the use of microwave radiometry for several diagnostic and therapeutic applications that can benefit from accurate non-invasive measurement of volume average temperature of tissue regions extending 4cm or more into the body. Design features are summarized for an appropriate high sensitivity long term stable system with 2.5 and 7 cm diameter receive antennas and integral 1.35 GHz total power radiometer electronics. Radiometer performance is characterized with electromagnetic and thermal simulations and experimental measurements in realistic models of two typical clinical applications. Results demonstrate sufficient sensitivity to track clinically significant changes in temperature of deep tissue targets for …
The Utility Of A Tablet Computer Device In Comparison To A Standard High Resolution Monitor For Reporting Ct Kub Images,
2014
Aga Khan University
The Utility Of A Tablet Computer Device In Comparison To A Standard High Resolution Monitor For Reporting Ct Kub Images, Kenneth Kiriinya Ibeere
Master of Medicine in Imaging and Diagnostic Radiology
Background: The latest technological developments in the field of digital medical imaging have facilitated the transfer of the power and utility of the personal computer to mobile computing devices. One of these that have been used in diagnostic imaging is a tablet computer. Mobile tele-radiology using a tablet computer device is an apt extension of imaging services, for after-office-hours consultation. It is crucial to determine the diagnostic accuracy of these portable computer devices in order to determine safety for use in diagnostic image interpretation without compromising patient care. Objective: To find out the diagnostic accuracy of urolithiasis (urinary tract calculi) …
Prediction Of Breast Tumor Size By Ultrasound: A Comparison With Pathology,
2014
Aga Khan University
Prediction Of Breast Tumor Size By Ultrasound: A Comparison With Pathology, David Toyis Wanyonyi
Master of Medicine in Imaging and Diagnostic Radiology
Background: Tumor size is one of the most important prognostic factors in breast cancer and its accurate assessment is critical in planning appropriate treatment. Although histology is often regarded as the definitive way of establishing tumor size, radiological techniques, particularly ultrasonography, are usually relied upon to give an estimate of the tumor size for prognostication and treatment planning. Correlations between mammography, ultrasonography, magnetic resonance imaging (MRI) and pathology size have been performed in different populations with varying results however no prospective study has been done to establish the agreement between sonographic tumor size and histopathological tumor size in our population. …
Prevalence Of Significant Liver Fibrosis In Patients With Hiv Monoinfection Compared To Those With Hiv-Hepatitis B Coinfection As Assessed By Shear Wave Elastography,
2014
Aga Khan University
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 …
Use Of An Electrical Impedance Tomography Method To Detect And Track Fractures In A Gelatin Medium,
2014
Michigan Technological University
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 …
An Investigation Of Nurbs-Based Deformable Image Registration,
2014
Virginia Commonwealth University
An Investigation Of Nurbs-Based Deformable Image Registration, Travis J. Jacobson
Theses and Dissertations
Deformable image registration (DIR) is an essential tool in medical image processing. It provides a means to combine image datasets, allowing for intra-subject, inter-subject, multi-modality, and multi-instance analysis, as well as motion detection and compensation. One of the most popular DIR algorithms models the displacement vector field (DVF) as B-splines, a sum of piecewise polynomials with coefficients that enable local shape control. B-splines have many advantageous properties in the context of DIR, but they often struggle to adequately model steep local gradients and discontinuities. This dissertation addresses that limitation by proposing the replacement of conventional B-splines with a generalized formulation …
Monitoring Brown Fat Metabolic Activity Using Microwave Radiometry: Antenna Design And Frequency Selection,
2014
Thomas Jefferson University
Monitoring Brown Fat Metabolic Activity Using Microwave Radiometry: Antenna Design And Frequency Selection, Dario B. Rodrigues, Paul R. Stauffer, Paolo F. Maccarini
Department of Radiation Oncology Faculty Papers
This paper describes the use of microwave radiometry for monitoring brown fat metabolism (mBAT). The radiometric frequency band and receive antenna were optimized for coupling to 2-6 ml BAT depots in the supraclavicular region. Radiometric signal variations induced by higher metabolic activity resulting from a cold stimulus were calculated with electromagnetic and thermal simulations in a segmented computational model of the human neck including BAT. A 2.5 cm dia. log spiral antenna was selected as optimum using a 500 MHz bandwidth and center frequency 2.75 GHz. Results suggest sufficient sensitivity to track subsurface temperature variations during long term mBAT monitoring …
