Radiology Commons^™

Modern Evaluation Of Abdominal Trauma, Errington C. Thompson, Md, Chadwick J. Knight, Md

Errington Thompson

Abdominal trauma can be mysterious to some physicians. If patients are evaluated for being stable or unstable, then abdominal trauma can be easily managed. Using a combination of physical examination, ultrasound and CT scans, patients can be quickly and efficiently evaluated.

A Comparison Of Imaging Modalities For The Diagnosis Of Osteomyelitis, Brandon J. Smith, Md, Grant S. Buchanan, Md, Franklin D. Shuler, Md, Phd

Franklin D. Shuler

Osteomyelitis is an increasingly common pathology that often poses a diagnostic challenge to clinicians. Accurate and timely diagnosis is critical to preventing complications that can result in the loss of life or limb. In addition to history, physical exam, and laboratory studies, diagnostic imaging plays an essential role in the diagnostic process. This narrative review article discusses various imaging modalities employed to diagnose osteomyelitis: plain films, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, bone scintigraphy, and positron emission tomography (PET). Articles were obtained from Pubmed and screened for relevance to the topic of diagnostic imaging for osteomyelitis. The authors …

A Comparison Of Imaging Modalities For The Diagnosis Of Osteomyelitis, Brandon J. Smith, Md, Grant S. Buchanan, Md, Franklin D. Shuler, Md, Phd

Marshall Journal of Medicine

Osteomyelitis is an increasingly common pathology that often poses a diagnostic challenge to clinicians. Accurate and timely diagnosis is critical to preventing complications that can result in the loss of life or limb. In addition to history, physical exam, and laboratory studies, diagnostic imaging plays an essential role in the diagnostic process. This narrative review article discusses various imaging modalities employed to diagnose osteomyelitis: plain films, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, bone scintigraphy, and positron emission tomography (PET). Articles were obtained from Pubmed and screened for relevance to the topic of diagnostic imaging for osteomyelitis. The authors …

Prospective Evaluation Of The Influence Of Iterative Reconstruction On The Reproducibility Of Coronary Calcium Quantification In Reduced Radiation Dose 320 Detector Row Ct., Andrew D. Choi, Eric S Leifer, Jeannie Yu, Sujata M Shanbhag, Kathie Bronson, Andrew E Arai, Marcus Y Chen

Radiology Faculty Publications

BACKGROUND: Coronary artery calcium (CAC) predicts coronary heart disease events and is important for individualized cardiac risk assessment. This report assesses the interscan variability of CT for coronary calcium quantification using image acquisition with standard and reduced radiation dose protocols and whether the use of reduced radiation dose acquisition with iterative reconstruction (IR; "reduced-dose/IR ") allows for similar image quality and reproducibility when compared to standard radiation dose acquisition with filtered back projection (FBP; "standard-dose/FBP") on 320-detector row computed tomography (320-CT).

METHODS: 200 consecutive patients (60 ± 9 years, 59% male) prospectively underwent two standard- and two reduced-dose acquisitions (800 …

Creating A Dynamic, Multi-Purpose Correction For Multiple Geometries And Field Sizes To Account For Off-Axis And Asymmetric Backscatter With Varian Portal Dosimetry, Remy Manigold

UNLV Theses, Dissertations, Professional Papers, and Capstones

Intensity modulated radiation therapy and volumetric modulated arc therapy are increasingly common in radiation therapy due to their benefits of target conformity and normal tissue sparing. Due to the complexities of plan delivery and the precision required, the dose delivered must be accurately measured for quality assurance (QA). One of the most efficient ways to perform patient-specific QA when using clinical linear accelerators (linac) is to use an electronic portal imaging device (EPID). Amorphous silicon (aSi) Electronic Portal Imaging Devices (EPIDs) are attached to the linac and can provide real-time feedback with spatial resolution on the order of sub-millimeter pixel …

A Study On Automated Process For Extracting White Blood Cellular Data From Microscopic Digital Injured Skeletal Muscle Images, Bibek Karki

UNLV Theses, Dissertations, Professional Papers, and Capstones

Skeletal muscle injury is one of the common injuries caused by high-intensity sports activities, military related works, and natural disasters. In order to discover better therapies, it is important to study muscle regeneration process. Muscle regeneration process tracking is the act of monitoring injured tissue section over time, noting white blood cell behavior and cell-fiber relations. A large number of microscopic images are taken for tracking muscle regeneration process over multiple time instances. Currently, manual approach is widely used to analyze a microscopic image of muscle cross section, which is time consuming, tedious and buggy.

Automation of this research methodology …

Modern Evaluation Of Abdominal Trauma, Errington C. Thompson, Md, Chadwick J. Knight, Md

Marshall Journal of Medicine

Abdominal trauma can be mysterious to some physicians. If patients are evaluated for being stable or unstable, then abdominal trauma can be easily managed. Using a combination of physical examination, ultrasound and CT scans, patients can be quickly and efficiently evaluated.

Interrater Reliability Of Quantitative Ultrasound Using Force Feedback Among Examiners With Varied Levels Of Experience, Michael O. Harris-Love, Catheeja Ismail, Reza Monfaredi, Haniel J. Hernandez, Donte Pennington, Paula Woletz, Valerie Mcintosh, Bernadette Adams, Marc R. Blackman

Exercise and Nutrition Sciences Faculty Publications

Background. Quantitative ultrasound measures are influenced by multiple external factors including examiner scanning force. Force feedback may foster the acquisition of reliable morphometry measures under a variety of scanning conditions. The purpose of this study was to determine the reliability of force-feedback image acquisition and morphometry over a range of examiner-generated forces using a muscle tissuemimicking ultrasound phantom.

Methods. Sixty material thickness measures were acquired from a muscle tissue mimicking phantom using B-mode ultrasound scanning by six examiners with varied experience levels (i.e., experienced, intermediate, and novice). Estimates of interrater reliability and measurement error with force feedback scanning were determined …