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

The typical kilovolt peak (kVp) used in scout scans for PET imaging is generally 120 kVp. This voltage is chosen because it balances adequate image quality with patient safety considerations. At 120 kVp, there is sufficient penetration of the X-ray beam to produce clear scout images of the anatomical structures that will be further evaluated during the PET scan, while also minimizing the radiation dose to the patient.

Scout images are often taken prior to the initiation of the PET process to localize the area of interest and to ensure accurate positioning of the patient. Using 120 kVp as the standard allows for optimal assessment of anatomical landmarks without unnecessarily increasing exposure to radiation.

Other kVp levels, such as 100 kVp, might not provide enough penetration for proper visualization, while higher kVp levels like 150 kVp or 200 kVp could lead to increased radiation dose without significant benefit in image clarity, making 120 kVp the most appropriate choice for typical scout scans in PET imaging.