Computed Tomography Technologist Practice Exam 2025 - Free CT Technologist Practice Questions and Study Guide

In-plane resolution refers specifically to the detail and clarity of an image captured in the XY plane, which corresponds to the horizontal and vertical dimensions of the imaging slice. This measurement is crucial in evaluating the quality of images produced by CT scans as it impacts the ability to distinguish features and structures within the plane being imaged. Higher in-plane resolution allows for better detection and analysis of anatomical structures, providing clearer, more defined images.

The other options refer to resolutions in different planes. For instance, the XZ direction and YZ direction involve vertical or longitudinal measurements in relation to either the X or Y axes and do not specifically address the in-plane resolution critical for interpreting images captured in the horizontal plane. Overall image resolution, while encompassing all axes, includes elements beyond just in-plane factors and does not focus exclusively on the critical differentiation in the XY plane.