Lightspeed 64 slice ct scanner

Patients with symptoms of acute stroke, who presented to the emergency room for acute stroke evaluation between 2013 and 2016 at the Blinded University Hospital (Blinded), were included in the study. Our hospital is a primary Joint Commission International- (JCI-) certified stroke center with endovascular treatment capabilities. The patients were randomly selected without repetition. Cases with image artifacts were excluded. The cases consisted of brain CT examinations stored in our hospital PACS, which were acquired using a General Electric LightSpeed 64 slice CT scanner (General Electric Healthcare, GE Medical Systems, Milwaukee, WI, USA), with 100 kV, 10 mAs, axial: 5 mm, sagittal: 3 mm, FOV: 26 cm, pixel spacing: 0.469, matrix: 512 × 512, and pitch: 0.984:1.
Based on a neuroradiologist routine primary diagnostic interpretation, the sample included patients without lesions (7) and those with hemorrhagic lesions (11), acute ischemic lesions (67), and chronic ischemic lesions (36). The ages ranged from 30 to 97 years, with a mean age of 70.8 years (standard deviation of 15.2). There were 59 males and 62 females.

GE Light Speed 64-slice CT scanner was used for enhanced CT. Patients were placed in the left decubitus position and were supine after 800 ml of air was injected through the anus. After the plain scanning, patients were injected with 80 mL nonionic iodine contrast agent (3.5 mL/s). Dynamic enhanced CT scanning was performed at the intravenous phase (70 s after injection), arterial phase (30 s after injection), and balance phase (240 s after injection). After the scan, the data was transmitted to the CT postprocessing workstation.