3d Convolutional Neural Networks For The Diagnosis Of 6 Unique Pathologies On Head Ct, 2020 Thomas Jefferson University
3d Convolutional Neural Networks For The Diagnosis Of 6 Unique Pathologies On Head Ct, Travis Clarke, Paras Lakhani, Md
Introduction: Head CT scans are a standard first-line tool used by physicians in the diagnosis of neurological pathologies. Recently, the development of deep learning models such as convolutional neural networks (CNNs) has allowed the rapid identification of bleeds and other pathologies on CT scans. This study aims to show that by training 3D CNNs with a larger, curated dataset, a more comprehensive list of potential diagnoses can be included in the detailed model.
Methods: A retrospective study was performed using a dataset of 66,000 head CT studies from the Thomas Jefferson University health system. Studies were acquired using a ...
What Is The Effect Of Iodine Contrast Agents On The Subharmonic Signal Generated From Ultrasound Contrast Agents?, 2020 Thomas Jefferson University
What Is The Effect Of Iodine Contrast Agents On The Subharmonic Signal Generated From Ultrasound Contrast Agents?, Neal Kalantri, Cara Esposito, Jaydev Dave
Subharmonic-aided pressure estimation (SHAPE) is a technique utilizing subharmonic signals from microbubble-based ultrasound contrast agents (UCA’s) to noninvasively record pressures. Cardiac applications of SHAPE have been demonstrated in canines where low errors (0.19-2.5mmHg) were observed in canine ventricle pressures between the SHAPE technique and pressure catheter measurements. Validation of SHAPE involves simultaneous measurements by a pressure catheter (iodine contrast is used to guide catheter placement) and by SHAPE using UCAs. The goal of this experiment is to determine if mixing Visipaque (iodine contrast, GE Healthcare, Oslo, Norway) and UCAs effects the subharmonic signal.
The study was performed ...
Assessment Of Dobhoff Tube Malposition On Radiographs Using Deep Learning, 2020 Thomas Jefferson University
Assessment Of Dobhoff Tube Malposition On Radiographs Using Deep Learning, Kevin George, Paras Lakhani, Md
Introduction: Dobhoff tubes (DHT) are narrow-bore flexible devices that deliver enteral nutrition for critically ill patients. Tracheobronchial insertion of DHTs presents a significant risk for pulmonary complications. Thus, DHT insertion requires radiologist confirmation of correct placement with chest x-ray (CXR), increasing clinical delays. To address this, we demonstrate the novel application of Deep Convolutional Neural Networks (DCNNs) to automatically and accurately identify DHTs in CXRs in real time.
Methods: 141 de-identified HIPAA compliant frontal view chest radiographs containing DHTs in various positions were obtained. The DHTs were first manually segmented and verified by a board certified radiologist. Images were split ...
Hepatocellular Carcinoma Treated With Microwave Ablation Prior To Liver Transplantation, 2020 Thomas Jefferson University
Hepatocellular Carcinoma Treated With Microwave Ablation Prior To Liver Transplantation, Nicole Wagner, Amanda Smolock, Michael Markovitz, Varun Danda, Christopher Neely, Warren Maley, Jesse Civan, Colette Shaw
Introduction: Ablation is a minimally invasive procedure that limits local liver tumor progression and prolongs patients’ transplantation eligibility. Microwave ablation (MWA) utilizes higher temperatures than the standard of care, radiofrequency ablation (RFA), which increases efficiency. Meta-analyses compared MWA with RFA for the treatment of HCC and showed similar efficacy and safety between these modalities. However, limited pathologic data exists determining whether explanted tumors remained viable after MWA.
Methods: Our database was reviewed retrospectively for patients with HCC who underwent MWA prior to liver transplantation between 2013 and 2019. Patient demographics, etiology of disease, tumor size, procedure details, bilirubin, MELD, and ...
Effect Of Contrast-Enhanced Echocardiograms On The Prognosis Of Infective Endocarditis, 2020 Thomas Jefferson University
Effect Of Contrast-Enhanced Echocardiograms On The Prognosis Of Infective Endocarditis, D. Arias, E. Halpern, F. Forsberg, J. R. Eisenbrey
Objective - Infective endocarditis (IE) is an infectious disease of the cardiac valves where bacteria colonize the valves; typically, via the formation of vegetations. Recent research has shown that the microbubbles in a contrast-enhanced ultrasound (CEUS) examination can move and dislodge bacterial vegetations in vitro. This study investigated whether CEUS resulted in faster resolution of IE in vivo by dislodging the vegetations.
Methods - This IRB approved retrospective study reviewed 36 patients who were diagnosed with IE via echocardiography. Data was sourced from patients within the Jefferson University Hospital’s Cardiology EMR system by searching for contrast and vegetation from January 1 ...
Automated Assessment Of Cardiothoracic Ratios On Chest Radiographs Using Deep Learning, 2020 Thomas Jefferson University
Automated Assessment Of Cardiothoracic Ratios On Chest Radiographs Using Deep Learning, Varun Danda, Paras Lakhani, Md
Introduction: The cardiothoracic ratio (CTR) is a quantitative measure of cardiac size that can measured from chest radiography (CXR). Although radiologists using digital workstations possess the ability to calculate CTR, clinical demands prevent calculation for every case. In this study, the efficacy of a deep convolutional neural network (dCNN) to assess CTR was evaluated.
Methods: 611 HIPAA-compliant de-identified CXRs were obtained from [institution blinded] and public databases. Using ImageJ, a board-certified radiologist (reader #1) and a medical student (reader #2), measured the CTR by marking four pixels on all CXRs: the right- and left-most chest wall, the right- and left-most ...
Lead X-Ray Vests: Pros And Cons In Dental Radiography And Patient Education On Radiographic Technology, 2020 Virginia Commonwealth University
Lead X-Ray Vests: Pros And Cons In Dental Radiography And Patient Education On Radiographic Technology, Kayla D. Oakley, Emily Deker
Dental Hygiene Student Scholarship
Problem: There is a greater need to emphasize and educate patients and providers about radiologic advancements and patient exposure. The tradition of placing lead x-ray vests on patients for all radiographs is no longer a necessity. Without the explanation of why lead aprons are no longer needed, unnecessary steps for the provider and potential harm to the patient could be caused.
Methods: This review of literature was assembled by analyzing data from primary and secondary sources through online databases. The most recent research on the risks and benefits of the use of lead x-ray vests towards patients in the dental ...
Chloroquine Induction Par-4 And Treatment Of Cancer, 2019 University of Kentucky
Chloroquine Induction Par-4 And Treatment Of Cancer, Vivek M. Rangnekar
Radiation Medicine Faculty Patents
Described herein are methods for treating cancer in a subject in need thereof by administering chloroquine, or a salt or prodrug thereof, optionally with another agent that promotes Par-4 production to induce prostate apoptosis response-4 (Par-4) production by host cells, particularly non-cancerous host cells, to promote apoptosis in cancer cells, including androgen insensitive prostate cancer cells.
Feasibility Of Diffusion And Probabilistic White Matter Analysis In Patients Implanted With A Deep Brain Stimulator., 2019 Thomas Jefferson University
Feasibility Of Diffusion And Probabilistic White Matter Analysis In Patients Implanted With A Deep Brain Stimulator., J. Muller, M. Alizadeh, L. Li, S. Thalheimer, C. Matias, M. Tantawi, J. Miao, M. D. Silverman, V. Zhang, G. Yun, V. Romo, F. B. Mohamed, C. Wu
Department of Neurosurgery Faculty Papers
Deep brain stimulation (DBS) for Parkinson's disease (PD) is an established advanced therapy that produces therapeutic effects through high frequency stimulation. Although this therapeutic option leads to improved clinical outcomes, the mechanisms of the underlying efficacy of this treatment are not well understood. Therefore, investigation of DBS and its postoperative effects on brain architecture is of great interest. Diffusion weighted imaging (DWI) is an advanced imaging technique, which has the ability to estimate the structure of white matter fibers; however, clinical application of DWI after DBS implantation is challenging due to the strong susceptibility artifacts caused by implanted devices ...
Sarcoidosis Of The Mandibular Condyle: A Rare Disease That Can Mimic Malignancy, 2019 University of Nebraska Medical Center
Sarcoidosis Of The Mandibular Condyle: A Rare Disease That Can Mimic Malignancy, Chad Sloan, Ben Lacrosse, Lei Yu, Alexander Braun, Scott Lauer, Timothy Donovan, John Baker, Jason Untrauer
Graduate Medical Education Research Journal
Sarcoidosis can involve any of the organs, however intraosseous involvement is rare and ranges from 5 to 15%, with lesions of the mandible being even rarer – currently with few known cases reported. Intraosseous lesions involving the mandible have been noted to be asymptomatic or associated with chronic jaw pain. Additionally, mandibular involvement can present as a lytic bone lesion mimicking osseous malignancy. Chronic polyarthritis is commonly associated with the progression of sarcoidosis and intraosseous involvement has been considered a late-stage sequelae. We report a case of biopsy-proven sarcoidosis within the mandibular condyle in an asymptomatic 56-year-old Caucasian female who had ...
A Young Man In A Rural Breast Clinic, 2019 Brigham & Women’s Hospital
A Young Man In A Rural Breast Clinic, Linda Ratanaprasatporn, Aline Umwizerwa, Vedaste Hategekimana, Vestine Rugema, Sughra Raza
Journal of Global Radiology
This article reports a case from Rwanda of muscular cysticercosis presenting as a painful “breast” lump in a young male patient. Sonographic evaluation revealed a hypoechoic mass deep to the breast tissue likely within the pectoralis muscle, rather than the breast. Subsequent excisional biopsy resulted in the diagnosis of cysticercosis.
Evolution Of Acute Ischemic Stroke Treatment As Supported By Clinical Trials, 2019 HCA Healthcare
Evolution Of Acute Ischemic Stroke Treatment As Supported By Clinical Trials, Savya S. Shukla, Brian F. Baigorri Md, Roberto I. Fourzali Md, Yafell Serulle Md
No abstract provided.
Orbit Image Analysis Machine Learning Software Can Be Used For The Histological Quantification Of Acute Ischemic Stroke Blood Clots, 2019 National University of Ireland, Galway
Orbit Image Analysis Machine Learning Software Can Be Used For The Histological Quantification Of Acute Ischemic Stroke Blood Clots, Sean Fitzgerald, Shunli Wang, Daying Dai, Dennis H. Murphree Jr., Abhay Pandit, Andrew Douglas, Asim Rizvi, Ramanathan Kadirvel, Michael Gilvarry, Ray Mccarthy, Manuel Stritt, Matthew J. Gounis, Waleed Brinjikji, David F. Kallmes, Karen M. Doyle
Open Access Articles
Our aim was to assess the utility of a novel machine learning software (Orbit Image Analysis) in the histological quantification of acute ischemic stroke (AIS) clots. We analyzed 50 AIS blood clots retrieved using mechanical thrombectomy procedures. Following HandE staining, quantification of clot components was performed by two different methods: a pathologist using a reference standard method (Adobe Photoshop CC) and an experienced researcher using Orbit Image Analysis. Following quantification, the clots were categorized into 3 types: RBC dominant (>/=60% RBCs), Mixed and Fibrin dominant ( > /=60% Fibrin). Correlations between clot composition and Hounsfield Units density on Computed Tomography (CT) were ...
Cultural Diversity In Healthcare [Radiologic Technology], 2019 CUNY La Guardia Community College
Cultural Diversity In Healthcare [Radiologic Technology], Lorena Maldonado, Theresa Licari
Open Educational Resources
The Cultural Diversity in Healthcare assignment is designed for the SCX 101 Patient care course. This assignment was first implemented in 2011 and has undergone significant revisions in the past few years from individual presentation to collaborative group presentation in 2013 and the connection to the Health Science First Year Seminar (HSF) assignment in 2018. The most recent revisions made were through the Center for Teaching and Learning (CTL) workshop on Global Learning in Fall 2018. Feedback from the CTL seminar led to the inclusion of the Learning Objectives of the assignment and prompts that direct students to relate their ...
Standardized Reporting In Pancreatic Protocol Ct: Implementation Across 3 Community Hospitals, Jacob L. Miller, Kevin Carr, James Banks, Nisha Mani
No abstract provided.
Quality And Safety Considerations In Breast Cancer Screening, 2019 Department of Radiology and Imaging Sciences and The Huntsman Cancer Hospital, University of Utah School of Medicine, Salt Lake City, UT
Quality And Safety Considerations In Breast Cancer Screening, Eugene Y. Kim, Laurie L. Fajardo
Proceedings in Obstetrics and Gynecology
Breast cancer is a leading cause of premature mortality among United States women. Early detection has been shown to reduce breast cancer morbidity, mortality and cost of treatment. The relative safety of breast cancer screening has been viewed in terms of benefits and harms. The quality and safety of breast cancer screening depends on both technical and human factors. Focusing on quality and safety considerations, we review two imaging modalities recommended for primary breast cancer screening: mammography and magnetic resonance imaging, and the use of ultrasound (US) for supplemental breast cancer screening.
Automatic Exposure Control During Computed Tomography Scans Of The Head: Effects On Dose And Image Quality, 2019 East Tennessee State University
Automatic Exposure Control During Computed Tomography Scans Of The Head: Effects On Dose And Image Quality, Stephen D. Osborne
Electronic Theses and Dissertations
Automatic exposure control (AEC) is effective at reducing potentially harmful radiation doses without sacrificing image quality for many types of computed tomography (CT) scans. However, there is a need for more information regarding the use of AEC for CT head scans. This study was conducted at Johnson County Community Hospital in Mountain City, TN. Preexisting adult CT head scans (n)60 were randomly selected to form 2 stratified samples, (n)30 each. One sample used a standard protocol, and the other used a protocol with a mA-modulated AEC system, Siemens CARE Dose 4D. Causal-comparative analyses were conducted, and it was ...
Positive Predictive Value Of Tomosynthesis-Guided Biopsies Of Architectural Distortions Seen On Digital Breast Tomosynthesis And Without An Ultrasound Correlate, 2019 University of Massachusetts Medical School
Positive Predictive Value Of Tomosynthesis-Guided Biopsies Of Architectural Distortions Seen On Digital Breast Tomosynthesis And Without An Ultrasound Correlate, Gopal Vijayaraghavan, Adrienne Newburg, Srinivasan Vedantham
Objective: The objective of the study was to determine the positive predictive value (PPV) of architectural distortions (AD) observed on digital breast tomosynthesis (DBT) and without an ultrasound (US) correlate.
Materials and Methods: In this single-institution, retrospective study, patients who underwent DBT-guided biopsies of AD without any associated findings on digital mammography (DM) or DBT, and without a correlate on targeted US exam, over a 14-month period were included in this study. All patients had DM and DBT and targeted US exams. The PPV was computed along with the exact 95% confidence limits (CL) using simple binomial proportions, with histopathology ...
Outpatient Facility-Based Order Variation In Combined Imaging., 2019 HealthHelp
Outpatient Facility-Based Order Variation In Combined Imaging., Adam C. Powell, Yan Wang, Gary L. Smith, James W. Long, Uday U. Deshmukh, David P. Friedman, Christopher G. Roth, Baskaran Sundaram
Department of Radiology Faculty Papers
OBJECTIVE: Combined computed tomography (CT) occurs when one anatomical area is simultaneously imaged both without and with contrast, or two overlapping anatomical areas are imaged concurrently. While this has been studied in a Traditional Medicare population, it has not been studied in other populations subject to prior authorization. This study explores between-facility variation in ordering and receiving orders to render combined CT in a mixed commercial and Medicare Advantage population.
METHODS: Orders for CT abdomen (without/with contrast), CT thorax (without/with contrast), and concurrent CT brain and sinus authorized by a prior authorization company from 2013-2017, pertaining to patients ...
Changes In Ventricular Depolarisation Vectors During Exercise Caused By Regional Myocardial Ischaemia, 2019 Aga Khan University
Changes In Ventricular Depolarisation Vectors During Exercise Caused By Regional Myocardial Ischaemia, Cameruddin Vellani, Satwat Hashmi, Sadia Mahmud, Mohammad Yusuf, Safia Awan, Khawar Kazmi
Section of Cardiology
Research at the Aga Khan University for several years has been directed to find a reliable, low-cost, portable, non-invasive method for identification of coronary artery disease, its location and extent. A new method has been devised to measure the magnitude and direction of cardiac electrical vectors in three perpendicular planes during physical exercise to identify reduction in myocardial excitability as the electrophysiological marker of hypoxia. This report shows that changes in electrical forces due to exercise-induced regional hypoxia serve as indicators of reversible myocardial ischaemia. Changes in the magnitude and direction of vectors at stages of the Bruce protocol were ...