Alexion tsx 034a

CT images were acquired using a 16-detector row CT unit (Alexion TSX-034A, Canon Medical Systems, Tochigi, Japan.). The technical parameters for CT were as follows: rotation time, 0.75 s; slice thickness, 2 mm; field of view, 160–340 mm; matrix dimensions, 512 × 512; reconstruction interval, 0.5–1 mm; detector pitch, 15; collimator pitch, 0.94; X-ray tube potential, 120 kVp; and X-ray tube current, variable milliamperage determined by x-, y-, and z-axis dose modulation. An intravenous iodine-based contrast medium (Omnipaque 300, Daiichi Sankyo, Tokyo, Japan) was administered using a power injector at a dose of 450 mg/kg into a cephalic catheter. After unenhanced scanning, post-contrast images were acquired 30–60 seconds after the initiation of contrast medium injection. CT images were retrospectively analyzed using a Digital Imaging and Communications in Medicine viewer (OsiriX Imaging Software, version 8.0, OsiriX Pixmeo, Geneva, Switzerland).