Final answer:
Leakage radiation does not contribute to diagnostic information and is considered undesirable. It can result in poor quality images and may increase costs due to the need for shielding. Deliberate exposure to radiation from radiopharmaceuticals, in contrast, is used for diagnostic imaging.
Step-by-step explanation:
The statement "Leakage radiation contributes to diagnostic information of the patient" is false. Leakage radiation refers to any unintended release of radiation during a diagnostic radiology procedure. Such radiation is not intended to form part of the captured image and does not provide useful diagnostic information. In fact, this kind of radiation can lead to poor quality images and necessitate additional measures, such as shielding, to protect both patient and staff. It can also increase the high cost of diagnostic procedures due to the need for additional protective infrastructure.
In nuclear medicine, radiopharmaceuticals are used to treat different diseases of the body. For example, Gallium-67 is used for cancer imaging; however, care must be taken with exposure, as overexposure to X-rays can cause cancer, even though in limited doses it is a helpful tool for imaging internal body structures. The different radiopharmaceuticals produce varying amounts of ionizing radiation, but only the intentional exposure from these substances is used for diagnostics, not the leakage radiation.