Anatomical analysis of lower extremity arterial CT angiography for guidance for vascular interventional operations

Objective:To evaluate the anatomical features of the lower extremity arteries from the iliac artery to the femoral artery section CT angiography in the coronal and sagittal maximum intensity projection and guide the patient right projection position in the interventional treatment of lower extremity arterial disease and select the lower extremity vascular intubation to improve the accuracy of interventional catheterization and the success rate.Methods:(1) CT angiography of 56 cases of normal adult iliac artery to femoral artery section was analyzed and the coronal position and the angle between the iliac arteries were measured.(2) The sagittal and coronal measurements of bilateral internal iliac artery open position high or low and the common iliac artery length were carried out.(3) The transverse open position on both sides of the deep femoral artery was observed.Results:(1) The angle between the bilateral iliac arteries in normal adult male was less than that of normal adult female,with a significant difference.(2) The left side of the iliac artery iliac artery was longer than the right side of the iliac artery iliac artery,and the right internal iliac artery opening was higher than the left internal iliac artery opening.(3) The starting site of the deep femoral artery opening from the posterior femoral artery accounted for 81%.Conclusion:(1) In the internal iliac artery interventional operation the loop catheterization is used in puncture from the femoral artery into contralateral internal iliac artery in adult males and the direct intubation technique is used in adult females.(2) The interventional procedures are more difficult in the lesions in the right artery than those in the left side.The interventional procedures should be implemented based on the anatomical characteristics of the internal iliac artery of different patients.(3) In arteriography,when the imaging overlap of superficial femoral and deep femoral artery takes place,the patient hip will be raised by 25 to 30°,or the X-ray tube will be rotated by 25 to 30°(i.e.oblique),which makes the deep femoral artery openings of the limbs clear.