Nuclear medicine uses a special radiation detection device called a:

Nuclear medicine employs a gamma camera, which is a specialized radiation detection device designed to capture images of radiation emitted from a radiopharmaceutical introduced into the body. This device is crucial for diagnosing various medical conditions by providing functional imaging of organs and tissues, allowing healthcare professionals to assess physiological processes.

The gamma camera operates by detecting gamma rays, which are emitted from the radiopharmaceuticals that have localized in specific organs or tissues. Through this process, it generates images that reflect the distribution and concentration of the radioactive material, thereby providing valuable information regarding the function and health of the targeted area.

In contrast, other devices mentioned serve different purposes. Brachytherapy cameras are specific to radiation therapy techniques involving radioactive sources placed close to or within the tumor. Teletherapy cameras relate to external beam radiation therapy and are not used for the imaging functions of nuclear medicine. A fluoroscopy unit is utilized for real-time imaging using X-rays, primarily for guiding various diagnostic and therapeutic procedures, but it does not measure gamma radiation like a gamma camera does. Thus, the gamma camera is uniquely suited for the requirements of nuclear medicine, making it the correct choice.