Radiology Commons^™

Dark Blood Late Enhancement Imaging., Peter Kellman, Hui Xue, Laura J. Olivieri, Russell R. Cross, Elena K Grant, Marianna Fontana, Martin Ugander, James C Moon, Michael S Hansen

Pediatrics Faculty Publications

Background

Bright blood late gadolinium enhancement (LGE) imaging typically achieves excellent contrast between infarcted and normal myocardium. However, the contrast between the myocardial infarction (MI) and the blood pool is frequently suboptimal. A large fraction of infarctions caused by coronary artery disease are sub-endocardial and thus adjacent to the blood pool. It is not infrequent that sub-endocardial MIs are difficult to detect or clearly delineate.

Methods

In this present work, an inversion recovery (IR) T2 preparation was combined with single shot steady state free precession imaging and respiratory motion corrected averaging to achieve dark blood LGE images with good signal …

Establishment Of Site Specific Multi Disciplinary Tumour Boards In Pakistan -Is It Really Necessary To Discuss All Cancer Cases In Multidisciplinary Tumour Board Meetings?, Ahmed Nadeem Abbasi

Department of Radiation Oncology

No abstract provided.

New Findings, Classification And Long-Term Follow-Up Study Based On Mri Characterization Of Brainstem Encephalitis Induced By Enterovirus 71, Hongwu Zeng, Feiqiu Wen, Wenxian Huang, Yungen Gan, Weibin Zeng, Ranran Chen, Yanxia He, Yonker Wang, Zaiyi Liu, Changhong Liang, Kelvin K. L. Wong

Radiology Faculty Publications

Background To report the diversity of MRI features of brainstem encephalitis (BE) induced by Enterovirus 71. This is supported by implementation and testing of our new classification scheme in order to improve the diagnostic level on this specific disease.

Methods Neuroimaging of 91 pediatric patients who got EV71 related BE were hospitalized between March, 2010 to October, 2012, were analyzed retrospectively. All patients underwent pre- and post-contrast MRI scan. Thereafter, 31 patients were randomly called back for follow-up MRI study during December 2013 to August 2014. The MRI signal patterns of BE primary lesion were analyzed and classified according to …

Pulse Shaping For Improved Diagnosis Of Portal Hypertension Using Subharmonic Aided Pressure Estimation, Ipshita Gupta, John R. Eisenbrey, Maria Stanczak, Anush Sridharan, Jaydev K. Dave, Ji-Bin Liu, Christopher Hazard, Colette Shaw, Susan Shamini-Noori, Jonathan M. Fenkel, Michael Soluen, Chandra Sehgal, Kirk Wallace, Flemming Forsberg

Department of Radiology Posters

Subharmonic aided pressure estimation (SHAPE) is based on the inverse relationship between the subharmonic amplitude of contrast microbubbles (obtained by transmitting at the fundamental frequency fo and receiving at fo/2) and the ambient pressure (see fig.1).

A noninvasive ultrasound based pressure estimation procedure would be a major development in the diagnosis of portal hypertension and less invasive than the current catheter-based hepatic venous pressure gradient (HVPG) measurement.

The hypothesis of this study was that portal vein pressures can be monitored and quantified noninvasively in humans using SHAPE.

First selected waveforms were optimized in vitro and in canines, then SHAPE was …

Long-Term Biocompatibility, Imaging Appearance And Tissue Effects Associated With Delivery Of A Novel Radiopaque Embolization Bead For Image-Guided Therapy, Karun Sharma, Zainab Bascal, Hugh Kilpatrick, Koorosh Ashrafi, Sean L. Willis, Matthew R. Dreher, Andrew L. Lewis

Pediatrics Faculty Publications

The objective of this study was to undertake a comprehensive long-term biocompatibility and imaging assessment of a new intrinsically radiopaque bead (LC Bead LUMI™) for use in transarterial embolization. The sterilized device and its extracts were subjected to the raft of ISO10993 biocompatibility tests that demonstrated safety with respect to cytotoxicity, mutagenicity, blood contact, irritation, sensitization, systemic toxicity and tissue reaction. Intra-arterial administration was performed in a swine model of hepatic arterial embolization in which 0.22–1 mL of sedimented bead volume was administered to the targeted lobe(s) of the liver. The beads could be visualized during the embolization procedure with …

Labrad : Vol 42, Issue 2 - October 2016, Aga Khan University Hospital, Karachi

LABRAD - Departments of Pathology & Laboratory Medicine and Radiology Archives

• Revised Nomenclature of Encapsulated Follicular Variant of Papillary Carcinoma; Now NIFTP in 2016
• Heritable Thrombophilia Screening: When & in Whom
• Massive Transfusion
• A Review of Innovance PFA-200 System
• Radiologic-Pathologic Correlation Osteogenic Tumors
• Pre Albumin or Transthyretin - A Useful Biomarker in the Assessment of Malnutrition
• Urinary Tract Infections (UTIs) in Children: A Pictorial Guide
• Validation of Test Methods in a Clinical Laboratory: A Brief Overview of the Concepts, Aims and Procedures
• Clinical Significance of Stone Composition Analysis in Urolithiasis Management

Establishment And Maintenance Of Quality Of Site-Specific Multidisciplinary Tumor Boards In Pakistan, Ahmed Nadeem Abbasi

Department of Radiation Oncology

No abstract provided.

The Effect Of Bony Parameters On The Pediatric Knee: Normal Versus Anterior Cruciate Ligament Injury Versus Tibial Spine Avulsion Fracture., Kenneth A. Shaw, Brian S. Dunoski, Neil J. Mardis, Donna M. Pacicca

Manuscripts, Articles, Book Chapters and Other Papers

Purpose  Anterior cruciate ligament (ACL) injuries can present as a ligamentous disruption or avulsion fracture of the tibial spine in pediatric patients. Differences in knee morphometric parameters have been investigated between pediatric cohorts with ACL disruptions and tibial spine avulsion fractures. However, no study to date has compared morphometric parameters in patients with tibial spine avulsion fracture against a control population. Methods  A retrospective review of pediatric patients undergoing knee magnetic resonance imaging (MRI) studies was performed, identifying 15 patients with tibial spine avulsion fracture between January 1, 2009, and January 1, 2013. Inclusionary criteria consisted of patients who sustained …

Conversion Of Intermediate Lirads Categories To Hepatocellular Carcinoma In Patients With Chronic Hepatitis B: Korean Immigrant Experience, Kofi-Buaku Atsina, Md, Zhenteng Li, Md, Sandeep Deshmukh, Md

Department of Radiology Posters

Introduction and Objective

The Liver Imaging Reporting and Data System (LIRADS) was created to standardize the reporting and data collection of MR imaging for hepatocellular carcinoma (HCC) in high risk patients. The major categories for LIRADS have the following descriptors:

LI-RADS 1 = Definitely benign

LI-RADS 2 = Probably benign

LI-RADS 3 = Intermediate probability for HCC

LI-RADS 4 = Probably HCC

LI-RADS 5 = Definitely HCC

LI-RADS 5V = Definitely HCC with tumor in vein

LI-RADS M = Probable malignancy, not specific for HCC

LI-RADS T = Treated Observation

However, there is a paucity of quantitative evidence for the …

Four-Dimensional (4d) Subharmonic Aided Pressure Estimation For Monitoring Neoadjuvant Chemotherapy Response Of Breast Cancer, Kibo Nam, Maria Stanczak, Anush Sridharan, Adam C. Berger, Tiffany Avery, John R. Eisenbrey, Flemming Forsberg

Department of Radiology Posters

Introduction

Neoadjuvant chemotherapy is a well-established treatment option for patients with non-metastatic breast cancer. The patient response is correlated with survival. However, the optimal method for monitoring neoadjuvant therapy response has not been established. One factor that may affect the response of neoadjuvant therapy is the interstitial fluid pressure (IFP). Increased IFP prevents an effective delivery of therapeutic agents and reduces the efficacy of the therapy. Recently, subharmonic-aided pressure estimation (SHAPE) using contrast-enhanced ultrasound (CEUS) has been developed and its potential was demonstrated in animals as a non-invasive technique for IFP measurements. The SHAPE method estimates IFP based on the …

Mr Screening For Acute Stroke Intervention Using A Patient Specific Screening Paradigm, Brian Cristiano Md

LLUMC Radiology Research Days

No abstract provided.

Automated Computer Analysis Of Core Infarct Size And Perfusion Mismatch, Johnny Suh Md

LLUMC Radiology Research Days

No abstract provided.

Measuring The Change In Size Of Intracranial Hematomas On Swi After Administration Of Normobaric Oxygen, Mohammad Kassir Md

LLUMC Radiology Research Days

No abstract provided.

Metabolic Syndrome And Progression Of Mild Cognitive Impairment, Eric Peters Md

LLUMC Radiology Research Days

No abstract provided.

Cross-Sectional Psoas Area As A Predictor Of Postoperative Morbidity And Mortality In Surgical Oncology Patients, Chad Burk Md

LLUMC Radiology Research Days

No abstract provided.

Cerebral Deoxyhemoglobin Imaging: A Biomarker For Poor Neurological Outcomes In Neonates With Acute Hypoxic Ischemic Brain Injury (Hi-Bi), Austin Trihh Md

LLUMC Radiology Research Days

No abstract provided.

Sensitivity And Specificity Of Sacral Arcuate Line Disruption For Fractures On Plain Radiography, Alex Sun Md

LLUMC Radiology Research Days

No abstract provided.

Gadobenate Disodium (Multihance) Deposition In The Globus Pallidus And Dentate Nucleus, Arian Mashhood Md

LLUMC Radiology Research Days

No abstract provided.

Radiation Dose In Vascular Surgery Procedures, K. Arsalaan Ahmed Md

LLUMC Radiology Research Days

No abstract provided.

Method And Phantom To Study Combined Effects Of In-Plane (X,Y) And Z-Axis Resolution For 3d Ct Imaging., David Goodenough, Josh Levy, Smari Kristinsson, Jesper Fredriksson, Hildur Olafsdottir, Austin Healy

Radiology Faculty Publications

Increasingly, the advent of multislice CT scanners, volume CT scanners, and total body spiral acquisition modes has led to the use of Multi Planar Reconstruction and 3D datasets. In considering 3D resolution properties of a CT system it is important to note that both the in-plane (x,y) and z-axis (slice thickness) influence the visual-ization and detection of objects within the scanned volume. This study investigates ways to consider both the in-plane resolution and the z-axis resolution in a single phantom wherein analytic or visualized analysis can yield information on these combined effects. A new phantom called the "Wave Phantom" is …