RADIOACTIVE SUBSTANCE DETECTION DEVICE, RADIATION SOURCE LOCATION VISIBILITY SYSTEM, AND RADIOACTIVE SUBSTANCE DETECTION METHOD

WIPO Patent Application WO/2013/105519

A1

Provided is a radioactive substance detection device (2), with which a radioactive substance which radiates gamma rays and characteristic x-rays being present in a specified direction (Y) is detected, said device comprising: a radiation detection element (26) which stops and detects entering radiation; and a screening container (25) and a collimator (21) which screen out and prevent radiation from reaching the radiation detection element (26). The radiation detection element (26) has a thickness which stops and detects characteristic x-rays which arrive from the radioactive substance being present in the specified direction (Y), and which allows gamma rays arriving from the radioactive substance to pass through. The thickness of an interim part (23) between holes (22) of the screening container (25) and the collimator (21) screens out characteristic x-rays of radiation which arrives from directions other than the specified direction (Y), and allows gamma rays of the radiation which arrives from the directions other than the specified direction (Y) to pass through. It is thus possible to provide a radioactive substance detection device, a radiation source location visibility system, and a radioactive substance detection method, which have substantially lower weight and with which sufficient performance may be obtained.

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KOBAYASHI SHINGO (JP)
UCHIHORI YUKIO (JP)
SHIRAKAWA YOSHIYUKI (JP)

PCT/JP2013/000114

July 18, 2013

January 12, 2013

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NAT INST RADIOLOG (JP)

G01T1/167; G01T1/29; G01T7/00

JP2008096401A	2008-04-24
JP2001208856A	2001-08-03
JP2010101663A	2010-05-06
JPH07209493A	1995-08-11
JPH1164529A	1999-03-05
JP2011524532A	2011-09-01
JP2004085250A	2004-03-18

See also references of EP 2804017A4

NISHIHARA, Hironori (JP)
Nishihara Hirotoku (JP)

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