الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
MDCT angiography has recently been developed as a potential imaging modality for the diagnosis of aorto-iliac diseases and peripheral arterial disease. The preliminary results of studies to evaluate CT angiography are promising.
In this work, we tried to high lighten the role of MDCT angiography as a non invasive technique in the assessment and evaluation of lower limb ischemia.
Multidetector CT angiography are that the study can be completed within minutes, it does not require sedation and arterial catheterization, it shows fr·actured bones, soft tissue as well as vascular injury, and it offers images similar to conventional angiography that can help to localize the exact site of vascular injury with respect to bone, solid organs, and surface landmarks.
The aim of CTA in the amio-iliac disease delineate the presence or absence of significant obstruction to blood flow, the site and anatomical extent of obstruction, the status of collateral flow and distal vasculature; for planning treatment as well as to monitor the results of therapy and disease progression.
Multislice CT angiography is more accurate than conventional angiography in determining the length of long occlusions, and shows intra luminal as well as extra vascular surroundings. It provides complete delineation of the femoropopliteal segment and inflow and outflow arteries, including lesion number, lengths, stenosis diameter and morphology, adjacent normal arterial caliber, degree of calcification, and status of distal runoff vessels.
Multi-detector row CT angiography not require to arterial catheter, thus it suited for the morphologic assessment of peripheral arterial bypass grafts. Compared with duplex US, multi-detector row CT angiography allows an
ccurate depiction of graft-related complications, including stenosis, occlusion, aneurysmal changes, In addition arterio-venous fistulas.
Limitation of MDCT angiography examination; they are those with poor enal function, those who have a history of reaction to contrast material. And image quality is suboptimal in patients with metallic implants.
CT A is proven to be an accurate method for evaluating aortic aneurysms, sharply demonstrating the size as well as being able to detect intra-luminal thrombus. CT A defines the craniocaudal extent of the aneurysms , also additional advantages include visualization of retroperitoneum, allowing the detection of aneurysmal leak ,ureteral obstruction ,peri aneurysmal fibrosis ,or other unsuspected causes of abdominal or back pain.
In Conclusion, The arteries of lower extremity inflow and runoff can be reliably depicted by using multi-detector row CT.