Somatom emotion 6 ct scanner

This experimental study was conducted with a group of patients, who had undergone nasopharyngeal CT examination at Prof. Dr. Margono Soekarjo Hospital, Purwokerto,
Central Java, Indonesia. A total of fourteen patients (3 male and 11 female), ranging from 21 to 72 years old were included in this study. Eight patients were
assigned to contiguous axial mode and the other six patients were examined in helical mode. All scans were performed with a Somatom Emotion 6 CT scanner (Siemens AG, Forchheim, Germany),
operating at 120 kVp and 250 mAs. The examinations obtained anatomical images along the vertex to skull base with a total of 29 - 34 slices with thickness of each
is 4 mm and reconstruction diameter of 200 mm.

All patients were scanned using a non-contrast HRCT technique on Siemens SOMATOME motion 6 CT scanner (Siemens Healthcare, Erlangen, Germany). The axial sections were acquired in a supine, neutral position, parallel to the superior orbital-meatal line consecutively. Scanning was done extending from the petrous pyramid to the mastoid in spiral mode. All scans were performed with 130 kV and 120 quality reference mAs using automatic exposure control with CARE Dose 4D system and CTDIvol 33 mGy. The gantry rotation time was 1 s and acquisition parameters were 6 × 1 mm with slice collimation of 1 mm, slice thickness of 2 mm, and increment of 2 mm. The kernels used for the image reconstruction were H90s for adult and C60s for pediatric patients with square matrix (512 × 512). Multiplanar reconstruction in axial, coronal, and sagittal planes was performed at a slice thickness of 1.25 mm and an increment of 0.8 mm.