- Slice count refers to the number of rows of detectors in the z-axis of a CT.
- You might see a particular CT referred to as an "8-slice CT scanner," "16-slice CT scanner," etc.
- In an 8-slice CT, there are eight slices of data captured for every rotation of the gantry
- Slice Increment refers to the movement of the table/scanner for scanning the next slice.
- City Imaging and Clinical Lab is equipped with Siemens SOMATOM Sensation CT Scanner, which is an excellent time tested and tried top-of-the line ultrafast 194 slice CT scanner.
- It is an extremely fast multidetector scanner with tube rotation of 330 ms and high temporal resolution of 165 ms, optimum for CT Coronary Angiography.
- It has high-resolution image capability, with the ability to create brilliant 2D and 3D images.
CT means 'Computed Tomography'. CT Scanners have revolutionary evolved from the conventional slice-to-slice scan to spiral/ helical scan and then to multidetector/multislice scan,which are capable of acquiring multiple sections per second significantly reducing scanning time and improving patient compliance.
They use X-ray tube and multiple rows of detectors which rotate around the patient providing diagnostic images through body volume, with isotropic multiplanar imaging. The scanner gives high-resolution images of any part of the body, but is especially excellent for cardiovascular, lung and abdominal imaging.
CT can be used in patients who cannot undergo MRI e.g. patients with pacemakers, cochlear implants and aneurysm clips. It can also be used in the presence of an implant, where MRI can leave significantly degrading artefacts, precluding proper visualization of the part.
Radiation hazards warrant judicious use of CT in pediatric and pregnant patients, but can be minimized with patient and body-specific protocols and dose reductions.