Gamma camera comprising an electronic device for the correction of linearity errors
The invention relates to a gamma camera for forming the image of a radiation distribution, comprising a scintillation crystal, several photomultipliers which are arranged according to a regular array opposite a surface of the scintillation crystal, the photosensitive surface of each photomultiplier facing the scintillation crystal, each photomultiplier being connected to arithmetic circuits which calculate the coordinates of the scintillations on the basis of the signals applied thereto by the photomultipliers, the gamma camera furthermore comprising an electrical circuit for correcting the calculated coordinates, the corrections being determined by the distance between the scintillation and the center of the photomultiplier tube situated nearest to the scintillation.
- Assignee:
- US Philips Corp., New York, NY
- Patent Number(s):
- US 4424447
- OSTI ID:
- 6809598
- Resource Relation:
- Patent File Date: Filed date 30 Mar 1981; Other Information: PAT-APPL-248914
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of calibrating a gamma camera, and a gamma camera including a calibration device
SCINTILLATION CAMERA
Related Subjects
GAMMA CAMERAS
CALIBRATION
CORRECTIONS
DESIGN
ERRORS
OPERATION
ANALOG-TO-DIGITAL CONVERTERS
ANGULAR DISTRIBUTION
COORDINATES
CRYSTAL COUNTERS
DIGITAL-TO-ANALOG CONVERTERS
ELECTRONIC CIRCUITS
GAMMA RADIATION
PHOTOMULTIPLIERS
SCINTILLATION COUNTERS
SCINTILLATIONS
SPATIAL DISTRIBUTION
CAMERAS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
IONIZING RADIATIONS
MEASURING INSTRUMENTS
PHOTOTUBES
RADIATION DETECTORS
RADIATIONS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments