Brilliance ict 256

The diagnosis of HCC was done with contrast-enhanced imaging (multidetector row CT or magnetic resonance imaging (MRI)). Commercially available clinical 3.0 Tesla MR imaging system (Ingenia 3.0 T; Philips Healthcare, Best, Netherlands) or a 1.5 Tesla MR imaging system (Ingenia 1.5 T; Philips Healthcare, Best, Netherlands) or CT imaging systems (Philips Brilliance 64 or Philips Brilliance 256 iCT, both Philips Healthcare, Best, the Netherlands) were used. HCC was diagnosed only if typical imaging features were detected [11 ]. Follow-up imaging was also performed by contrast-enhanced imaging (CT or MRI). Response to treatment was determined by contrast-enhanced imaging at three months (Fig 1b). Response to local ablative therapy was defined as lack of contrast enhancement in the lesion of interest as sign of vital tumor mass. Non-response was defined as detection of vital tumor mass. Additionally, response was also classified according to RECIST criteria [12 (link)]. Response was defined as RECIST complete remission (CR), while no response was defined as RECIST stable disease (SD) or progressive disease (PD). Follow up imaging was then performed 90 days after local ablative therapy and further recorded until the end of study, death or occurrence of Non-TL.

CT examinations of the abdomen were performed on the following CT scanners: Siemens Definition Flash, Siemens Somatom Definition AS 40, Siemens Sensation 40, and Siemens Emotion 16 (256 rows, 40 rows, 40 rows, and 16 rows, Siemens Healthcare, Germany); Philips Brilliance iCT 256 (256 rows, Philips Healthcare, Hamburg, Germany). The CT scan protocol consisted of, at least, a portal-venous phase. Optionally, non-enhanced, arterial and late phases were performed. Accurate timing of the optional arterial phase was ensured by automated bolus tracking in the suprarenal aorta. The portal-venous phase was obtained with a delay of 60 s. Optionally, with an additional delay of 180 s, a late phase was acquired.
All images were reconstructed using a soft tissue convolution Kernel (either B30f, B30s, I30f, or B41s). Slice thicknesses of the reconstructed images were 2 mm in 1 patient, 3 mm in 16 patients, 4 mm in 1 patient, and 5 mm in 6 patients.

CT was performed on a range of scanners from different vendors including Siemens Somatom X.cite, Somatom Definition Flash, Somatom Definition AS+, and Somatom Definition Edge Plus (Siemens, Erlangen, Germany), as well as GE Revolution (General Electric, Boston, MA, USA) and Philips Brilliance iCT 256 (Philips, Amsterdam, The Netherlands). The three-phase CT clinical protocol consists of NCCT, an arterial phase measured with CTA and CTV after intravenous contrast agent injection. Due to the different scanner types and acute setting of AIS, the CTV was timed with a mean delay of 70 ± 28 s after the CTA. A fixed tube voltage of 120 kV for both the unenhanced and venous phases was used.