公开(公告)号：CA993122A

公开(公告)日：1976-07-13

申请号：CA174012

申请日：1973-06-14

Applicant: PICKER CORP

Inventor： MARTONE RONALD J ,  GOLDMAN SAMUEL C ,  WOLCZEK WALTER

IPC: G01T1/164

Abstract: A scintillation camera of the multiple phototube type. A thin light pipe and masks are employed to diffuse the light so that the camera operates on a principle of light diffusion rather than phototube "viewing" as described in the prior art. The configurations of the masks are selected in accordance with the characteristics of the crystal and associated phototubes.

公开(公告)号：CA1037617A

公开(公告)日：1978-08-29

申请号：CA237392

申请日：1975-10-07

Applicant: PICKER CORP

Inventor： MARTONE RONALD J ,  YARSAWICH MICHAEL ,  WOLCZEK WALTER

IPC: H05G1/44

Abstract: A system and method for governing the exposure of an image generated by a radiation camera to an image sensing camera is disclosed. The exposure is terminated in response to the accumulation of a predetermined quantity of radiation, defining a radiation density, occurring in a predetermined area. An index is produced which represents the value of that quantity of radiation whose accumulation causes the exposure termination. The value of the predetermined radiation quantity represented by the index is sensed so that the radiation camera image intensity can be calibrated to compensate for changes in exposure amounts due to desired variations in radiation density of the exposure, to maintain the detectability of the image by the image sensing camera nothwithstanding such variations. Provision is also made for calibrating the image intensity in accordance with the sensitivity of the image sensing camera, and for locating the index for maintaining its detectability and causing the proper centering of the radiation camera image.

公开(公告)号：DE2333860A1

公开(公告)日：1974-01-31

申请号：DE2333860D

申请日：1973-07-03

Applicant: PICKER CORP

Inventor： MARTONE RONALD JOSEPH ,  GOLDMAN SAMUEL CHAIM ,  WOLCZEK WALTER

IPC: G01T1/164 ,  G01T1/202

Abstract: A scintillation camera of the multiple phototube type. A thin light pipe and masks are employed to diffuse the light so that the camera operates on a principle of light diffusion rather than phototube "viewing" as described in the prior art. The configurations of the masks are selected in accordance with the characteristics of the crystal and associated phototubes.