Noninvasive Detection of Coronary Artery Stenosis Using 16-slice Spiral CT：a Comparison with Selective X-ray Coronary Angiography

• Published in: Journal of Huazhong University of Science and Technology. Medical sciences 2006, Vol.26 (3), p.338-340
• Main Author: 史河水 韩萍 孔祥泉 冯敢生 Martin HK Hoffmann
• Format: Article
• Language: English
• Subjects: Adult; Aged; Coronary Angiography - methods; Coronary Stenosis - diagnostic imaging; CT检查; Female; Humans; Male; Middle Aged; Tomography, Spiral Computed - methods; 冠状动脉狭窄; 冠状动脉血管造影术; 投影强度
• ISSN: 1672-0733; 1993-1352
• DOI: 10.1007/bf02829569

The role of 16-slice spiral CT was selective X-ray coronary angiography （SCA） who were suspected of having coronary heart evaluated in the diagnosis of coronary stenosis, with serving as the reference standard. Sixty-five patients disease, without percutaneous transluminal coronary angioplasty or coronary bypass-grafting, were investigated using 16-slice CT. Eight patients with pre-scan heart rate of more than 80 beats/min were given β-blockers. After the retrospectively ECG-gated axial imaging reconstruction, volume redering （VR）, multi-planar reconstruction （MPR）, curved MPR and maximum intensity projection （MIP） were used to reconstruct. Every segment of coronary artery with a diameter ≥1.5 mm was assessed, and the presence on CT with a stenosis exceeding 50 % diameter reduction was compared with that on SCA. The reasons which lead to some segments unevaluable were analysed. Compared with SCA, 93 % coronary segments and 94 % main branches were evaluable. Residual cardiac motion artifacts, severe calcification and poor opacification made 58 %, 28 % and 14 % of the remaining 60 segments unevaluable respectively. Without routine administration of β-blockers, good coronary imaging quality can be acquired using 16-slice spiral CT. It is a reliable noninvasive method for detection of obstructive coronary artery disease.