Question

From the list below, identify the CT scanning method that requires a large detector array with numerous data collection channels.

1. Axial scanning
2. Helical Scanning
3. Volume scanning

Answer 1

2. Helical Scanning is the CT method that needs a large detector array with many data collection channels to capture a continuous spiral path of data around the patient.

Step-by-step explanation:

From the mentioned CT scanning methods, the one that requires a large detector array with numerous data collection channels is 2. Helical Scanning.

Helical (or spiral) CT scanning involves the continuous movement of the patient table through the scanning gantry while the x-ray source and detector array rotate around the patient.

This method captures a helical or spiral path of data which is then reconstructed into cross-sectional images.

Because the scanner is collecting data continuously as opposed to slice by slice, it requires a large detector array to capture the complete data set efficiently and quickly.