الفهرس 
Anatomy of the Arterial Supply of the Lower LimbOnly 14 pages are availabe for public view
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Abstract
There is an increasing prevalence of peripheral arterial disease, which affects approximately 12% of adults.
Duplex ultrasonography (US), magnetic resonance (MR) angiography, and CT angiography have been shown to be valuable noninvasive alternatives to conventional DSA in the evaluation of aortoiliac and lower extremity arteries.
The introduction of multi–detector row CT scanners has substantially improved CT angiography by offering increased volume coverage, decreased dose of contrast medium, decreased acquisition time, and improved spatial resolution for assessment of smaller arterial branches, including the aortoiliac and lower extremity arteries.
This study is carried out in the Ain Shams University Specialized Hospital (ASUSH), and other private Radiology centers, to assess the role of
MDCT in patients with LEPAD, in relation to the Gold standard IA-DSA.
Multi-detector row CT angiography is feasible, accurate, and reliable in the assessment of aortoiliac and lower extremity arteries.
MDCTA reduces diagnostic costs and provides adequate information for decision making.
It can accurately detect degree and length of arterial stenosis.
Assessment of post-traumatic vascular lesions e.g. occlusion, aneurysms or arterial dissection, is superior by MDCT.
MDCTA is an accurate technique for preoperative and post-interventional evaluation of the patency of stents and grafts.
Cases of vasculitis, e.g. Takayasu arteritis, are best evaluated with MDCT, due to its accuracy and its ability to screen other arterial regions.
MDCT shows incomparable ability in detecting extra-arterial causes of occlusion, or other remote non-arterial pathologies.
It is favorable and less invasive procedure in pediatric age group.
MDCTA shows an overall sensitivity of 91 %, specificity 95 %, and accuracy 96.7 %.
Axial and three-dimensional post-processing techniques are required to facilitate interpretation and presentation.
The most important drawback is the limited lumen evaluation of extensive calcified arteries, with a resultant false positive results.
In conclusion, multi–detector row CT angiography can be used as an alternative to conventional DSA in the evaluation of aortoiliac and lower extremity arteries in patients with peripheral arterial disease.