Evaluation of small coronary artery aneurysm by 64-slice multi-detector CT coronary angiography and virtual angioscopy/ Kucuk koroner arter anevrizmasinin 64 dedektorlu BT He yapilan koroner anjiyografi ve sanal anjiyoskopi ile degerlendirilmesi.

A 77-year-old man presented to the cardiology clinic with the complaint of effort-induced chest pain without known ischemic heart disease. Physical examination was normal. Electrocardiographic recordings revealed non-specific ST-T changes in lateral precordial leads. There was no elevation of cardiac enzymes and no laboratory evidence of connective tissue disease or vasculitis. Multi-dedector CT (MDCT) coronary angiography was performed with 64-slice CT scanner (Somatom Sensation 64, Siemens Medical Solutions, Forchheim, Germany). The scan was performed during 10-second breath hold, with a 0.6 mm collimation, 0.6 mm slice thickness reconstruction. During the image acquisition, 80 ml of non-ionic iodinated contrast agent (380 mg of iodine per milliliter) was injected intravenously at a rate 4 ml/sec followed by 40 ml of saline at 5 ml/sec. Imaging was obtained by retrospective ECG-gating. Curved multiplanar reformatted images showed small right coronary artery (RCA) aneurysm (Fig. 1). Conventional coronary angiography also showed a small aneurysm of the RCA (Fig. 2). Three-dimensional virtual angioscopic images revealed saccular aneurysmal neck and patent artery lumen (Fig. 3).

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Although coronary angiography is considered the gold standard, MDCT angiography, which is less invasive technique, may be used for the diagnosis of CAA.

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Osman Koc, Ali Sami Kivrak, Kurtulus Ozdemir *

From Departments of Radiology and * Cardiology, Meram Medical

Faculty, Selcuk University, Konya, Turkey

Address for Correspondence/Yazsma Adresi: Dr. Osman Koc Department of Radiology, Selcuk University Meram Medical Faculty, Konya, Turkey Phone: [phone] Fax: [phone] E-mail: [e-mail]