128 slice definition flash

The patients underwent CT scans at two tertiary care hospitals. Chest CTs were performed on two different scanners (16 slice Somatom Sensation 16, 128-slice Definition FLASH, all Siemens Healthcare, Erlangen, Germany). All CT acquisitions were obtained in supine position during end-inspiration. Intravenous contrast material was administered at the discretion of the radiologist considering the individual study indication. Automatic tube voltage selection was applied with a reference tube voltage of 120 kV. Tube current was regulated by an automatic tube current modulation technique with the reference mAs being 40−110. Collimation width was 0.625 mm–0.75 mm. Multiplanar reformations (MPR) were reconstructed in the axial plane with a slice thickness of 0.75–1.5 mm (56 CTs) and 2–4 mm (9 CTs) in lung kernel and with a slice thickness of 1−5 mm in soft tissue kernel. Additional sagittal and coronal MPRs were reconstructed with a slice thickness of 1–3 mm using lung and soft tissue kernel. The pictures were sent to a picture archiving and communication system (PACS, Syngo Imaging, Siemens, Erlangen, Germany).