Ionizing radiation detector adapted for use with tomography systems

Patent · Mon Nov 16 23:00:00 EST 1981

OSTI ID:5713411

Riihimaki, E

An improved ionizing radiation detector functioning in a proportional chamber mode, for use with x-ray tomography systems, is disclosed. The detector includes an elongated housing enclosing a chamber, a high pressure gas of great atomic weight and substantially opaque to x-radiation in the chamber, anodes and cathodes mounted in the chamber enclosed in the gas, and a voltage supply for supplying a positive voltage to the anode and a negative voltage to the cathode. The housing includes a window substantially transparent to x-radiation. The cathodes are platetype cathodes and the anodes are composed of a plurality of metal wires extending parallel to the beam direction of the radiation to be detected at spaced intervals within a substantially claim, and the anodes and cathodes are parallel to each other. Means are provided to detect separately the voltage pulse on each anode wire.

• Assignee: Hospital Physics Oy (Finland)
• Patent Number(s): US 4301368
• OSTI ID: 5713411
• 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
550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALLOYS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DIAGNOSTIC TECHNIQUES
ELECTRIC POTENTIAL
ELECTRODES
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
GOLD
IONIZING RADIATIONS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
METALS
MOLYBDENUM
OXIDES
OXYGEN COMPOUNDS
RADIATION DETECTORS
RADIATIONS
REFRACTORY METALS
SILVER
STEELS
TANTALUM
TOMOGRAPHY
TRANSITION ELEMENTS
TUNGSTEN
X RADIATION