Radiopharmaceutical CZT sensor and apparatus

摘要

A gamma ray detector includes a gamma ray detecting rod elongated along a longitudinal axis, wherein gamma ray detection is enhanced along the longitudinal axis, and a gamma ray shield encapsulating the rod, the shield having an aperture at an end of the detecting rod along the longitudinal axis to admit gamma rays substantially parallel to the longitudinal axis of the elongated detecting rod, wherein gamma ray detection is enhanced along the longitudinal axis and aperture to substantially collimate the sensitivity of the gamma ray detector along the combined aperture and longitudinal axis of the detecting rod.

主权项

1. An apparatus for detecting radioactivity of a sample in a container of known dimensions comprising:
a first gamma ray detector arranged below a lower surface of the container with respect to gravity; and a second gamma ray detector arranged above an upper surface of the container with respect to gravity, opposite the first gamma ray detector; wherein each of the first gamma ray detector and the second gamma ray detector have enhanced sensitivity along their respective longitudinal axes; wherein each of the first gamma ray detector and the second gamma ray detector detect radioactivity from the sample in the container; and a processor configured to determine one or more of a volume of the sample and a concentration of a radionuclide in the sample based on at least the volume of the container, the radioactivity detected by the first gamma ray detector and the radioactivity detected by the second gamma ray detector.