CT AC parameters typically include which of the following mA value?

In the context of CT attenuation correction (CT AC) parameters used in PET imaging, the choice of the mA (milliampere) value plays a significant role in the quality of the acquired CT images, which are used to correct PET images for accurate quantification and localization of radionuclide distribution.

The selected mA value of 30 mA is often considered optimal because it balances image quality and radiation dose. Lower mA values, such as 20 mA, might not provide sufficient image quality for accurate attenuation correction, while values that are too high, such as 40 mA or 50 mA, can increase radiation exposure unnecessarily without significant gains in image quality for the purpose of attenuation correction in a PET CT procedure.

Furthermore, using a moderate mA like 30 mA allows for obtaining adequately detailed images of the patient's anatomy, which aids in the precise alignment and correction of the PET data. This results in improved diagnostic accuracy without compromising patient safety due to excessive radiation exposure.

In summary, the choice of 30 mA for CT AC parameters reflects a standard practice aimed at achieving a balance between effective imaging and patient safety during PET imaging.