What is the typical scan distance in scout scan parameters for PET imaging?

In PET imaging, the typical scan distance used in scout scan parameters is generally around 1000 mm. This distance is selected based on the standard dimensions of the PET scanner and is aimed at ensuring adequate coverage for the majority of patients while allowing for accurate alignment and imaging of the area of interest. The scout scan serves as a preliminary scan to outline the scanning area and assists in positioning the patient correctly within the field of view before the actual diagnostic scans are performed.

The choice of 1000 mm is beneficial because it strikes a balance between covering a substantial part of the patient's body and optimizing the geometry for the PET detectors, contributing to improved image quality and effective diagnostic outcomes. This distance also accommodates a variety of anatomical sizes in the patient population, making it a practical standard in clinical practice.