New medical imaging devices, such as the CT scanner, have begun to challenge traditional role relations among radiologists and radiological technologists. Under some conditions, these technologies may actually alter the organizational and occupational structure of radiological work. However, current theories of technology and organizational form are insensitive to the potential number of struct...

Background and aims: This study aimed to compare MRI utilization in governmental hospital 6months before and after Iranian health care reform in equal 6 months for 92&93. Methods: This is cross sectional study and data gathered from R&D department of Shiraz University of medical sciences and for data analysis used excell2007 and calculated utilization index Results: The total number of MRI scan...

Health professionals are faced with challenges when they have to exploit the semantics of concepts present in clinical terminologies in support of research activities. The difficulty lies in the fact that this semantics is represented not only through the labels of concepts, but also their position in the hierarchy, and, when available, their logical and textual definitions. We investigate and ...

SEE PAGE 804 T he procedural success rates of percutaneous intervention for chronic total coronary occlusions (CTOs) over the past decade have been increasing, driven by the development of specialized guidewires and microcatheters and the introduction of new technical strategies, including antegrade subintimal re-entry and the retrograde transcollateral approach. An ongoing challenge is to sele...

Review of our records for a 2-year period (1985-1986) yielded 15 patients in whom unequivocally normal myelograms and postmetrizamide CT scans had been obtained before diskography. In none of these patients was the diskogram or postdiskography CT scan positive for either central, posterolateral, or extreme lateral disk herniation. It was our experience that, with the new-generation, improved-re...

Helical computed tomography (CT) started in the years of '90, enable faster scan acquisition and faster data reconstruction. Multislice CT (MSCT) is the latest technology in this decade, functioning by acquiring multiple simultaneous slices using multi-detector system. Most advanced and contemporary models are the 64-slices machine, dual source CT machine and the 256-slices machine. The last-me...