Hitachi, Ltd.

Hokkaido University

Hitachi Cable Mec-tech, Ltd.

Masatoshi Tanaka

Katsutoshi Tsuchiya

Tsuneaki Kawaguchi

Hiroshi Kitaguchi

Kazuma Yokoi

Takafumi Ishitsu

Yuichi Morimoto

Naoki Kubo

Nagara Tamaki

Shinya Kominami

Shigeru Kimura

Junichi Katogi

Masami Murayama

A collimator, a radiological imaging apparatus and a nuclear medicine diagnosis apparatus which are able to improve the sensitivity are provided. The radiological imaging apparatus has a collimatordisposed to oppose a radiological detection deviceand having through-holesfor passing to the radiological detection devicegamma rays in a specified direction out of those radiated from an object to be examined. The collimatoris produced by mutually coupling a plurality of metal tubular membersA each having the through-holewith the help of a bonding agent S in alignment with a plurality of detectorsconstituting the radiological detection device

Collimator, radiological imaging apparatus and nuclear medicine diagnosis apparatus

A radiation imaging system is configured by a collimatorA including a detectorwith a discrete detection pixel corresponding with a pixel and a plurality of radiation passagesand looks into a plurality of detectorsthrough one radiation passageto set a step width of rotation around a rotation center axis Xonly for an angle &#x3b8;p made by lines provided by connecting a center detectorof the radiation passageand the adjacent two detectors. In the case of generating a flat plane projection image for one direction, radio-graphing is carried out on a projection image in a plurality of predetermined angle positions (&#x2212;&#x3b8;p, 0, +&#x3b8;p) in the circumferential direction of the rotation center axis Xand thereby one plane projection image is obtained.

Radiation imaging system and nuclear medicine diagnosis instrument therefor

Disclosed herein is a radiation imaging apparatus and radiation-imaging-apparatus-based nuclear medicine diagnosis apparatus having a collimator in which a plurality of rectangular through-holes are arranged in a grid pattern and separated by septa is rotated through a predetermined angle as viewed from above in relation to the layout of a plurality of rectangular detectors that are arranged in a grid pattern. The predetermined angle ranges from 20 to 70 degree and more preferably from 30 deg to 60 deg. With this configuration, the influence of sensitivity variations (moire patterns) that are included in an image picked up due to interference with a collimator when pixel type detectors are used is eliminated.

Radiation imaging apparatus and nuclear medicine diagnosis apparatus using the same

Growing community of inventors

Kashiwa, Japan

Masatoshi Tanaka