Search results for: Ranish Deedar-Ali-Khawaja

Items from 1 to 11 out of 11 results

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Comparison of Measured and Estimated CT Organ Doses for Modulated and Fixed Tube Current:

Atul Padole, Ranish Deedar Ali Khawaja, Alexi Otrakji, Da Zhang, more

Academic Radiology > 2016 > 23 > 5 > 634-642

The aim of this study was to compare the directly measured and the estimated computed tomography (CT) organ doses obtained from commercial radiation dose-tracking (RDT) software for CT performed with modulated tube current or automatic exposure control (AEC) technique and fixed tube current (mAs).With the institutional review board (IRB) approval, the ionization chambers were surgically implanted...

article

Corrigendum to “Ultra-low dose abdominal MDCT: Using a knowledge-based Iterative Model Reconstruction technique for substantial dose reduction in a prospective clinical study” [Eur. J. Radiol. 84 (2015) 2–10]

Ranish Deedar Ali Khawaja, Sarabjeet Singh, Michael Blake, Mukesh Harisinghani, more

European Journal of Radiology > 2016 > 85 > 1 > 310

article

Improving Concordance of MRI and PET/CT Interpretations With Retrospectively Coregistered MRI and PET/CT Data Sets

Yingbing Wang, Ruth Lim, Ranish Deedar Ali Khawaja, Michael A. Blake

Current Problems in Diagnostic Radiology > 2015 > 44 > 3 > 232-236

This study evaluates if retrospective software-fused magnetic resonance imaging/positron emission tomography (MRI/PET) images can improve concordance of MRI and PET/computed tomography (CT) findings in the pelvis and improve overall lesion detection and characterization, as compared with independent side-by-side interpretation of MRI and PET data sets. Institutional review board approval was obtained...

article

Quantification of interstitial fluid on whole body CT: comparison with whole body autopsy

Roberto Lo Gullo, Shelly Mishra, Diego A. Lira, Atul Padole, more

Forensic Science, Medicine, and Pathology > 2015 > 11 > 4 > 488-496

Purpose Interstitial fluid accumulation can occur in pleural, pericardial, and peritoneal spaces, and subcutaneous tissue planes. The purpose of the study was to assess if whole body CT examination in a postmortem setting could help determine the presence and severity of third space fluid accumulation in the body. Materials and methods Our study included 41 human cadavers (mean age 61 years, 25...

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Dose reduction in pediatric abdominal CT: use of iterative reconstruction techniques across different CT platforms

Ranish Deedar Ali Khawaja, Sarabjeet Singh, Alexi Otrakji, Atul Padole, more

Pediatric Radiology > 2015 > 45 > 7 > 1046-1055

Dose reduction in children undergoing CT scanning is an important priority for the radiology community and public at large. Drawbacks of radiation reduction are increased image noise and artifacts, which can affect image interpretation. Iterative reconstruction techniques have been developed to reduce noise and artifacts from reduced-dose CT examinations, although reconstruction algorithm, magnitude...

article

Ultra-low dose abdominal MDCT: Using a knowledge-based Iterative Model Reconstruction technique for substantial dose reduction in a prospective clinical study

Ranish Deedar Ali Khawaja, Sarabjeet Singh, Michael Blake, Mukesh Harisinghani, more

European Journal of Radiology > 2015 > 84 > 1 > 2-10

To assess lesion detection and image quality parameters of a knowledge-based Iterative Model Reconstruction (IMR) in reduced dose (RD) abdominal CT examinations.This IRB-approved prospective study included 82 abdominal CT examinations performed for 41 consecutive patients (mean age, 62±12 years; F:M 28:13) who underwent a RD CT (SSDE, 1.5mGy±0.4 [∼0.9mSv] at 120kV with 17–20mAs/slice) immediately...

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Ultra low-dose chest CT using filtered back projection: Comparison of 80-, 100- and 120kVp protocols in a prospective randomized study

Ranish Deedar Ali Khawaja, Sarabjeet Singh, Rachna Madan, Amita Sharma, more

European Journal of Radiology > 2014 > 83 > 10 > 1934-1944

To assess lesion detection and diagnostic image quality of filtered back projection (FBP) reconstruction technique in ultra low-dose chest CT examinations.In this IRB-approved ongoing prospective clinical study, 116 CT-image-series at four different radiation-doses were performed for 29 patients (age, 57–87 years; F:M – 15:12; BMI 16–32kg/m ² ). All patients provided written-informed-consent...

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Surgical management of valvular heart diseases in pregnancy

Asif Jafferani, Ayesha Malik, Ranish Deedar Ali Khawaja, Lumaan Sheikh, more

European Journal of Obstetrics and Gynecology > 2011 > 159 > 1 > 91-94

Heart disease in pregnancy remains one of the important causes for maternal and fetal mortality and morbidity. Cardiac surgery undertaken in pregnancy presents specific additional issues for both the mother and fetus; especially cardiopulmonary bypass and the factors associated with it. Successful outcome of cardiopulmonary bypass surgery during pregnancy depends upon the multidisciplinary management...

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Imaging and Intervention of Paraneoplastic Effect of a Right Atrial Myxoma on Factor VII Activity Levels

Saulat Hasnain Fatimi, Ranish Deedar-Ali-Khawaja, Sarah K. Kiani

The Annals of Thoracic Surgery > 2011 > 91 > 1 > 278-281

We present the case of a 64-year-old Pakistani man with right atrial myxoma, recently diagnosed with acquired severe factor VII (FVII) deficiency. The patient presented with a history of chronic hiccups and weight loss. Initial evaluation revealed an isolated prolonged prothrombin time, severely reduced FVII activity level, and a giant right atrial myxoma protruding into the right ventricle on computed...

article

Trends of Surgical Career Selection Among Medical Students and Graduates: A Global Perspective

Ranish Deedar-Ali-Khawaja, Sadaf Mumtaz Khan

Journal of Surgical Education > 2010 > 67 > 4 > 237-248

Declining trends in surgery have been well-researched in the North American region, but little is known about the international dynamics affecting this phenomenon. A comprehensive approach to this emerging issue is lacking.Our objective in this study is to explore global trends related to medical student interest in surgical careers. We will also identify factors influencing the choice of surgery...

article

Mediastinal lymphomas: Primary Mediastinal (Thymic) Large B-cell Lymphoma versus classical Hodgkin lymphoma, histopathologic dilemma solved?

Shahid Pervez, Ranish Deedar Ali Khawaja

Pathology - Research and Practice > 2010 > 206 > 6 > 365-367

Primary Mediastinal (Thymic) Large B-cell Lymphoma (PMLBL) frequently demonstrates clinical, morphologic and/or immunohistochemical (IHC) features that overlap with mediastinal-classical Hodgkin lymphoma (cHL). Our study compared the immunohistochemical profile of PMLBL versus mediastinal cHL in a cohort of 18 patients, 11 of whom were diagnosed as having PMLBL, and 7 were diagnosed as having mediastinal...

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