Research Publications

Emergency Radiology Coverage: Technical and Clinical Feasibility of an International Teleradiology Model

Emergency Radiology (2003)

The purpose of the study was to determine the feasibility of international teleradiology, utilizing day-night time differences, for online interpretation of overnight computed tomography (CT) studies. One hundred and two consecutive Emergency Room patients who underwent CT examinations between the hours of 11 pm and 7 am were enrolled. All age groups and study types were included. CT studies were transmitted from the in-hospital PACS system (Kodak, Fremont, Calif.) to a web-based server (Medweb, San Francisco, Calif.). A radiologist in Bangalore, India, working an 8 am to 4 pm day shift, downloaded and reviewed the studies on a desktop PC using a 128-kbps internet connection at 10-20:1 wavelet compression and generated a report. The report was then uploaded to the server, noting the time at upload. Each study report was compared with the official in-house diagnostic report and concordance assessed on a three-point scale. Mean download time was 8.14 s per image. For head CT reports ( n=47), the mean turnaround time for a final transcribed report was 39.5 min. For abdomen/pelvis CT reports ( n=48) the mean turnaround time was 84.4 min. Out of 106 cases, there was discordance between the clinical diagnostic report and the study report in 20 (19%); however, on subsequent review the teleradiology report was found to be correct in 13 of these. Day-night time differences across the globe can be utilized to provide overnight emergency radiology coverage using web-based teleradiology. Scan download and report upload times are within acceptable limits. To read more, click on below link…

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Renal Medulla Carcinoma in a White Adolescent

American journal of Roentgenology (1997)

Renal medullary carcinoma (RMC) is a rare neoplasm of the kidney that has been recently described. It is almost exclusive to young patients of African descent and associated with sickle cell hemoglobinopathy, mainly sickle cell trait and hemoglobin sickle cell disease. The prognosis of RMC is very poor because of the highly aggressive behavior of this neoplasm and its resistance to conventional chemotherapy. Metastatic disease is almost universal at the time of presentation, and the malignancy is minimally responsive to a variety of regimens and/or modalities, including surgery, radiotherapy, chemotherapy, and biological immune-modulation therapy. We report the seventh case of a left RMC occurring in a white child with sickle cell trait, but with a localization of the tumor in the left kidney, considered a non-predominant side for this type of tumor. To learn more, click the below link.

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Dental Implants and Dental CT Software Programs

Seminars in Ultrasound, CT and MRI (1995)

Dental implants are titanium cylinders that are surgically implanted into the jaw to allow fixation of a permanent dental prosthesis. These have provided an attractive alternative to standard removable dentures and have become quite popular. To assess these patients preoperatively, CT software programs were developed that display multiple axial, cross-sectional, and panoramic images of the jaw. As a result, new dialogues and interactions were created between radiologists and dentists, and this in turn brought new territories and unfamiliar diseases to the radiologists’ view. The purpose of this article is to familiarize the radiologist with dental implants, the surgical procedure, dental CT software programs, and related dental pathology. To know more, do read.

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“Small bowel feces sign” – A Ct sign in small bowel obstruction

Introduction Small bowel obstruction is a common cause of abdominal emergency. Diagnosis helps effective management and prevents complications. CT is an effective tool in evaluation of small bowel obstruction. The small bowel feces sign is a finding observed in small bowel obstruction on Helical CT (6). It is defined as presence of feces like material

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Inter-Organizational E-Commerce in Healthcare Services: The Case of Global Teleradiology.

Abstract Advances in healthcare information technology have enabled new models for electronic delivery of healthcare services. In this paper, we present the case of electronic delivery of radiological services and describe the market-based and technological factors that have led to the development of internet-based service models for flexible delivery of radiological services. Specifically, we describe

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Transient Hepatic Attenuation Difference (THAD)– A Case Report

Abstract Transient hepatic attenuation difference (THAD) are areas of increased parenchymal enhancement visible during the hepatic arterial phase on hepatic CT. THADs are associated with a large variety of liver disorders-Portal or hepatic vein thrombosis, cirrhosis, Budd- Chiari syndrome, biliary obstruction, trauma ,focal hepatic lesions and aberrant blood supply. THADs that are associated with hepatic

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Helical CT evaluation of aortopulmonary window

Abstract Aortopulmonary window is an opening between the aorta and the pulmonary trunk. Two distinct separated semilunar valves must exist to establish the diagnosis of aortopulmonary window, and this defect should be differentiated from truncus arteriosus. Aortopulmonary window is generally diagnosed by echocardiography or Angiocardiography. The authors present two cases of Aortopulmonary window diagnosed by

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