Clinical value of MSCTA in the interventional treatment of the initial origin stenotic segment of the internal carotid artery

Objective To assess the clinical value of MSCTA in the interventional treatment of the initial origin stenotic segment of internal carotid artery. Methods Forty two patients with stenosis of initial origin stenotic segment of internal carotid artery underwent interventional treatment and MSCTA were analyzed retrospectively. Results Forty two patients were diagnosed correctly through MSCTA. The percentages of stenotic area were measured from the multiplanar reconstruction(MPR)images of MSCTA,including mild stenosis( 50%)in 15,moderate stenosis(50% ～ 70%)in 17,severe stenosis( 70%)in 30,obstruction in 4( 100%)and normal in 18. Plaques and endoscopic views of stenosis were delineated on MSCTA and CTVE. Conclusion MSCTA is an accurate method for the assessment of the stenosis and plaques of the stenotic origin segment of internal carotid artery. MSCTA can be used as a convenient follow-up modality for instent restenosis.(J Intervent Radiol,2007,16: 652-656)