A technique employing a grid-like structure to assess spatial resolution and distortion in medical imaging systems, this evaluation method is primarily utilized to quantitatively analyze image quality. By visualizing the resulting image of the grid, professionals can identify geometric inaccuracies and limitations in the imaging modality. For example, assessing computed tomography (CT) or magnetic resonance imaging (MRI) scanner performance involves this precise assessment of geometric integrity.
The importance of this quality control procedure stems from its ability to detect subtle degradations in image quality that might otherwise go unnoticed. Identifying and correcting these issues proactively ensures accurate diagnoses and treatment planning. Historically, the method offered a significant advancement over subjective visual assessments, providing objective, measurable data for performance monitoring. This translates to increased confidence in the accuracy of medical images and ultimately, improved patient care.
