الفهرس | Only 14 pages are availabe for public view |
Abstract The introduction of multi slice CT was a real breakthrough. The new generation of multislice CT scanners offering simultaneous acquisition of several multi sub-millimetric slices represents an important leap on the way towards true high resolutional, perfectional scanning. Advantages of CT over other imaging modalities especially when concerning vascular pathologies detection include mainly: relatively less expensive, more widely available, less invasive, easy to perform, better spatial resolution and comprehensive nature of CT imaging. Therefore allowing MDCT angiography to easily compete against other well reputed imaging modalities as MR imaging. The performance of multislice CT scanners have resulted in a regained interest for CT imaging modalities. Multi slice CT (MSCT) has had a substantial effect on CTA, offering shorter acquisition times, lower doses of contrast medium, and improved spatial resolution for assessing smaller arterial branches. The superior evolution of multi slice CT technique has enabled faster high detectability and diagnostic capabilities across a wide spectrum of clinical indications. These include multi row detector CT angiography of mesenteric vascular pathologies. With its greatly enhanced image resolution, MSCT angiography seems able to overcome the technical challenge of depicting small mesenteric vessels, providing a detailed anatomical view similar to the conventional angiography but with the possibility of examination from innumerable viewing angles allowing high quality detection of different manifestations and implicated findings of the various types of mesenteric pathological conditions, mainly those of mesenteric ischemia, including both acute and chronic pathological forms, as well as depiction of different forms of radiological presentations associated with mesenteric vasculitis, mesenteric venous thrombosis, inforced mesenteric trauma, secondary mesenteric vessels affection owing to pathological influence of tumours eg. pancreatic adenocarcinoma. No statistical difference is found between three-dimensional MR angiography and MDCTA in the detection of different wide spectrum of pathological conditions of the mesenteric vessels. The review of CT angiography data using various post processing techniques and their accurate applicable use in different mesenteric vasculature pathologies requires knowledge of the strength and weakness of the display methods for optimal diagnosis and treatment planning. Widespread applications for MDCT angiography techniques can be expected in the near future, with the greater availability of MSCT equipment and the improvement in workstation design and performance. This will thus have an impact on the practice of CT imaging modality as the favourable imaging tool in many vast spectrum of fields, and still yet to come. |