Mizouni Habiba, Arous Younes, Hedhli Mohamed, Mahmoud Maha, Menif Emna
Service d'Imagerie Médical, Hôpital La Rabta.
Tunis Med. 2012 Mar;90(3):201-4.
Due to the recent technological progress, multislice computerized tomography (MSCT) allows visualizing the heart and coronary arteries. Multislice computed tomography is non invasive and provides high quality images.Its main limits are arythmia, tachycardia and coronary calcifications. But the main drawback with MSCT is the radiation dose.
Report of usefuluess and indications of multislice CT scanner.
Rzview of literature
Although the indications of MSCT did not reach a guideleness level yet, some trends can be stated. The advantages and limitations of MSCT in cardiac exploration are summarized in this article. The indications are mainly based on the excellent negative predictive value of MSCT regarding coronary artery disease. Hence, patients at low to moderate risk of coronary artery disease mostly benefit of the technique. MSCT can be an alternate examination in case of non feasible or non contributive ischemic test. MSCT is highly contributive in the ostial analysis, in detecting abnormal congenital coronary anomalies or in analysing bypass grafts. MSCT remains limited in patients with heavily calcified coronary arteries, and in patients with stented distal arteries.
Multislice CT scanner should not be considered as equivalent to invasive coronary angiography bu it is a additional diagnostic tool.
由于近期的技术进步,多层螺旋计算机断层扫描(MSCT)能够对心脏和冠状动脉进行成像。多层螺旋计算机断层扫描是非侵入性的,可提供高质量图像。其主要局限性在于心律失常、心动过速和冠状动脉钙化。但MSCT的主要缺点是辐射剂量。
报告多层螺旋CT扫描仪的实用性和适应证。
文献综述
尽管MSCT的适应证尚未达到指南级别,但可以总结出一些趋势。本文总结了MSCT在心脏检查中的优缺点。其适应证主要基于MSCT对冠状动脉疾病具有出色的阴性预测价值。因此,冠状动脉疾病低至中度风险的患者大多能从该技术中获益。在缺血试验不可行或无诊断价值的情况下,MSCT可作为替代检查。MSCT在开口分析、检测先天性冠状动脉异常或分析搭桥血管方面具有重要作用。对于冠状动脉严重钙化的患者以及远端动脉置入支架的患者,MSCT的作用仍然有限。
多层螺旋CT扫描仪不应被视为等同于有创冠状动脉造影,但它是一种额外的诊断工具。