64 slice spiral ct scanner

All patients whose lungs had been affected underwent a plain chest scan using a Philips 64-slice spiral CT scanner (Philips Ingenuity) before treatment and quality correction standards were met prior to the CT scan. The patients were in the supine posture and underwent a scan extending from lung apices to the upper abdomen, with imaging acquisition commencing 5 cm inferior to the diaphragmatic dome at maximum inhalation. The CT scanning parameters were as follows: Diameter of the inspected detector, 64.000x0.625 mm; the rotation time was 0.5 sec; the pitch, 1.375; the tube voltage was 120 kV; the tube current was 250-400 mA, which was modulated using an automatic tube current; Field of view (FOV), 35-40 cm; matrix was 512x512 thickness of the slice, 5 mm.

CT examinations were performed by using a 64-slice spiral CT scanner (Philips Ingenuity, the Netherlands). Scanning parameters: tube voltage: 120 kV, tube current: 30 mAs, layer thickness: 1.0 mm. Patients underwent chest CT in the supine position. Breath was held after inhalation, and the scan range was from the thoracic inlet to the level of the costophrenic angle. In the Picture Archiving and Communication System (PACS), we locate T7 and look for the mid-sagittal plane. An oval area, excluding the cortical margin, was drawn on the mid-sagittal plane. While placing the region of interest (ROI), the posterior venous plexus area and vertebral shadow were avoided, and the average CT attenuation values of the ROI were measured (Figure 2). Manipulation was measured by two trained collectors who were unaware of the results.
Figure 2

The 7th thoracic vertebra was located and the CT value of mid-sagittal plane was measured in the region of interest (ROI).