What axis corresponds to the direction of data acquisition where the patient is positioned?

The Z-axis corresponds to the direction of data acquisition in computed tomography (CT) imaging. In the context of patient positioning and the orientation of the CT scanner, the Z-axis runs vertically along the length of the patient’s body, allowing the machine to capture slices of the anatomy as the patient moves through the scanner. This alignment is crucial for acquiring images that represent the internal structures accurately.

When a CT scan is performed, the table moves in the direction of the Z-axis while the X-ray tube and detectors rotate around the patient's body, capturing the necessary data. The resulting images are reconstructed into a detailed cross-sectional view of the anatomy, which is essential for diagnosis and treatment planning.

Understanding the orientation of the axes in relation to CT scanning helps in visualizing how the images are acquired and the importance of accurate slice placement for diagnostic purposes.