| 摘要 |
An apparatus for generating gamma transmission and gamma emission images simultaneously includes a camera and a line transmission source of gamma radiation disposed on opposite sides of an imaging area in which a patient lies. The line detector moves along a path that substantially traverses the field of view of the gamma camera. As the gamma camera moves an acceptance region and a mask region are electronically defined and moved across the camera's field of view. Photons striking the camera are categorized according to their energy and the region of impingement. The categorization defined an emission image, a transmission image and a crosstalk image. The transmission and crosstalk images are combined to form a corrected transmission image that then is used along with the emission image to produce and image of the patient.
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