Scintillation camera with improved output means

Patent · Tue Jan 31 04:00:00 EST 1978

OSTI ID:6690595

Lange, K; Wiesen, E J; Woronowicz, E M

In a scintillation camera system, the output pulse signals from an array of photomultiplier tubes are coupled to the inputs of individual preamplifiers. The preamplifier output signals are coupled to circuitry for computing the x and y coordinates of the scintillations. A cathode ray oscilloscope is used to form an image corresponding with the pattern in which radiation is emitted by a body. Means for improving the uniformity and resolution of the scintillations are provided. The means comprise biasing means coupled to the outputs of selected preamplifiers so that output signals below a predetermined amplitude are not suppressed and signals falling within increasing ranges of amplitudes are increasingly suppressed. In effect, the biasing means make the preamplifiers non-linear for selected signal levels.

• Assignee: General Electric Co.
• Patent Number(s): US 4071762
• OSTI ID: 6690595
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
550601 -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
AMPLIFIERS
CAMERAS
CATHODE RAY TUBES
COORDINATES
DISPLAY DEVICES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
GAMMA CAMERAS
MEASURING INSTRUMENTS
PHOTOMULTIPLIERS
PHOTOTUBES
PREAMPLIFIERS
RADIATION DETECTORS
READOUT SYSTEMS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS