| abstract |
A nuclear medical diagnostic apparatus for detecting gamma rays emitted from the radio isotope (RI) administered to a subject, to generate images showing the functions of the subject, such as metabolism. In the nuclear medical diagnostic apparatus, at least one detector is attached to a rotating ring and located inside the ring. The apparatus can therefore be modified as a one-detector type to a four-detector type. It can easily be graded up from a one-detector type to any one of the other types including the four-detector type. Further, the image-generating mode can be freely changed. Moreover, the apparatus can be small and light. |