Generally speaking, PET-CT cannot be performed directly in the inpatient ward for several reasons:
1. Safety factor: PET-CT examination requires the use of radioisotopes to label drugs, which release radiation in the body that can be used to observe the body's metabolism. Therefore, in order to avoid radioactive contamination and to protect the safety of hospitalized patients and other people in the ward, PET-CT examinations are usually performed in specific nuclear medicine departments or diagnostic radiology departments.
2. Equipment: PET-CT requires the use of specialized equipment, including PET scanners and CT scanners. These are usually large and require special setups and environments that cannot be placed directly in an inpatient ward.
3. Specialized operation: PET-CT requires a trained and authorized medical professional to operate and interpret the results. Such professionals are generally not available in inpatient wards, so PET-CT examinations cannot be performed.
In summary, PET-CT cannot normally be performed directly in inpatient wards due to safety factors, equipment and professional operational constraints. However, there may be exceptions in special cases where specific equipment and specialized personnel are available in the ward to perform PET-CT examinations. The decision still needs to be based on the actual situation in the hospital.