Design and construction of the Donner 280-crystal positron ring for dynamic transverse section emission imaging

Conference · Thu Sep 01 00:00:00 EDT 1977

OSTI ID:5302310

Derenzo, S E; Banchero, P G; Cahoon, J L; Huesman, R H; Vuletich, T; Budinger, T F

The design and construction of a medical imaging system for the rapid, accurate, three-dimensional imaging of positron-labeled compounds in the human body are described. Our medical research goals include quantifying blood flow and metabolism in human heart muscle and brain. The system consists of a large gantry containing lead shielding and a ring of 280 NaI(Tl) detectors that completely encircles the patient; 280 photomultiplier tubes, preamplifiers and timing discriminators; circuits that determine whenever a crystal has detected a gamma ray in time coincidence (i.e., within 12 nsec) of any of the opposing 105 crystals and determine the addresses of the crystals involved; 120K words of 12 bit memory for the simultaneous acquisition of data from eight portions of the cardiac cycle; and a hardwired image reconstructor capable of filtering and backprojecting data from 140 views to form a 210 x 210 computed transverse section image in less than 2 sec.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.; California Univ., Berkeley (USA). Donner Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5302310
• Report Number(s): LBL-5679; CONF-771205-1; TRN: 78-001683
• Resource Relation: Conference: IEEE conference on decision and control, New Orleans, LA, USA, 7 Dec 1977
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BRAIN
RADIOISOTOPE SCANNING
HEART
PATIENTS
POSITRON CAMERAS
PERFORMANCE TESTING
RADIOISOTOPE SCANNERS
DESIGN
BLOOD FLOW
COINCIDENCE METHODS
DATA PROCESSING
GEOMETRY
IMAGES
METABOLISM
NUCLEAR MEDICINE
PHOTOMULTIPLIERS
RADIONUCLIDE ADMINISTRATION
SCINTILLATION COUNTERS
BODY
CAMERAS
CARDIOVASCULAR SYSTEM
CENTRAL NERVOUS SYSTEM
COUNTING TECHNIQUES
GAMMA CAMERAS
MATHEMATICS
MEASURING INSTRUMENTS
MEDICINE
NERVOUS SYSTEM
ORGANS
PHOTOTUBES
PROCESSING
RADIATION DETECTORS
TESTING
550601* - Medicine- Unsealed Radionuclides in Diagnostics
440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments