What is one common test performed to maintain SPECT camera functionality?

Energy resolution testing is a crucial procedure performed to maintain SPECT camera functionality. This test assesses how well the camera differentiates between different photon energies emitted from radioactive sources. High energy resolution is essential in SPECT imaging, as it ensures that the camera can accurately detect and differentiate between various isotopes used in nuclear medicine.

A SPECT camera with good energy resolution can produce clearer and more accurate images, which is vital for proper diagnosis and treatment planning. This performance parameter is routinely evaluated to ensure that the camera meets the necessary standards for clinical use. It directly impacts the quality of the images produced, which is paramount in diagnostic accuracy.

The other testing options play important roles in specific aspects of camera performance or different imaging modalities but do not directly address energy resolution, which is fundamental for a SPECT system's efficacy in distinguishing between different radioactive emissions.