Radiation detector, radiation detecting system and X-ray CT apparatus

A radiation detecting system comprising:

• a scintillator for converting an X-ray incident from a surface side into light;
• at least one photodiode chip having a plurality of photodiodes for converting the converted light into electrical signals;
• at least one switching chip having a plurality of switching elements for reading out a plurality of signals from said plurality of photodiodes;
• at least one data acquisition chip having a plurality of data acquisition systems for amplifying the plurality of readout signals and converting the signals into digital signals;
• and
• a rigid multilayer wiring board on which said photodiode chip, said switching chip, and said data acquisition chip are commonly mounted.

A radiation detecting system comprising:

• a scintillator for converting an X-ray incident from a surface side into light;
• at least one photodiode chip having a plurality of photodiodes for converting the converted light into electrical signals;
• at least one switching chip having a plurality of switching elements for reading out a plurality of signals from said plurality of photodiodes;
• at least one data acquisition chip having a plurality of data acquisition systems for amplifying the plurality of readout signals and converting the signals into digital signals;
• a first rigid printed wiring board on which said photodiode chip and said switching chip are mounted;
• a second rigid printed wiring board on which said data acquisition chip is mounted;
• and
• a connector for detachably connecting said first rigid printed wiring board to said second rigid printed wiring board.

A radiation detection system comprising:

• a detection element group constituted by a plurality of detection elements for detecting X-rays;
• data acquisition means for acquiring output data from said detection element group;
• a substrate on which at least one of said detection element group and said data acquisition means is mounted;
• and
• means for forming said detection element group, said data acquisition means, and said substrate into a multilayer structure.

A radiation detection system comprising:

• a scintillator block for converting X-nays into light;
• a photodiode array for converting the light into electrical signals;
• a switch for selecting a photodiode, from said photodiode array, from which an electrical signal is to be output;
• a data acquisition chip for acquiring data output from said photodiode array selected by said switch;
• and
• means for integrating said scintillator block, said photodiode array, said switch, and said data acquisition chip.

A radiation detection system comprising:

• a detection element group constituted by a plurality of detection elements for detecting X-rays;
• a first substrate on which said detection element group is mounted;
• a data acquisition chip for acquiring output data from said detection element group;
• a second substrate on which said data acquisition chip is mounted;
• and
• connection means for connecting said first and second substrates in a one-to-one correspondence.

An X-ray CT apparatus comprising:

• an X-ray source which emits X-rays while rotating around an object to be examined;
• a radiation detection system having a plurality of detection elements for detecting X-rays passing though the object, which are arranged in row and column directions;
• and
• reconstruction means for reconstructing a CT image of the object on the basis of the projection data,
• wherein said radiation detection system includes
• a scintillator for convening an X-ray incident from a surface side into light,
• at least one photodiode chip having a plurality of photodiodes for converting the converted light into electrical signals,
• at least one switching chip having a plurality of switching elements for reading out a plurality of signals from said plurality of photodiodes,
• at least one data acquisition chip having a plurality of data acquisition systems for amplifying the plurality of readout signals and converting the signals into digital signals, and
• a rigid printed wiring board on which said photodiode chip, said switching chip, and said data acquisition chip are commonly mounted.

An X-ray CT apparatus comprising:

• an X-ray source which emits X-rays while rotating around an object to be examined;
• a radiation detection system having a plurality of detection elements for detecting X-rays passing through the object, which are arranged in row and column directions;
• and
• reconstruction means for reconstructing a CT image of the object on the basis of the projection data, wherein said radiation detection system includes a scintillator for converting an X-ray incident from a surface side into light,
• at least one photodiode chip having a plurality of photodiodes for converting the converted light into electrical signals,
• at least one switching chip having a plurality of switching elements for reading out a plurality of signals from said plurality of photodiodes,
• at least one data acquisition chip having a plurality of data acquisition systems for amplifying the plurality of readout signals and converting the signals into digital signals, and
• a rigid multilayer printed wiring board on which said photodiode chip, said switching chip, and said data acquisition chip are commonly mounted.

An X-ray CT apparatus comprising:

• an X-ray source which emits X-rays while rotating around an object to be examined;
• a radiation detection system having a plurality of detection elements for detecting X-rays passing through the object, which are arranged in row and column directions;
• and
• reconstruction means for reconstructing a CT image of the object on the basis of the projection data,
• wherein said radiation detection system includes
• a scintillator for converting an X-ray incident from a surface side into light,
• at least one photodiode chip having a plurality of photodiodes for converting the converted light into electrical signals,
• at least one switching chip having a plurality of switching elements for reading out a plurality of signals from said plurality of photodiodes,
• at least one data acquisition chip having a plurality of data acquisition systems for amplifying the plurality of readout signals and converting the signals into digital signals,
• a first rigid printed wiring board on which said photodiode chip and said switching chip are mounted;
• a second rigid printed wiring board on which said data acquisition chip is mounted, and
• a connector for detachably connecting said first rigid printed wiring board to said second rigid printed wiring board.

An X-ray CT apparatus comprising:

• an X-ray source which emits X-rays while rotating around an object to be examined;
• a radiation detector having a plurality of detection elements for detecting X-rays passing through the object, which are arranged in row and column directions;
• data acquisition means for acquiring projection data associated with the object by using an output from said radiation detector;
• switch means for selecting data from the plurality of detection elements which are to be output to said data acquisition means;
• reconstruction means for reconstructing a CT image of the object on the basis of the projection data;
• and
• means for forming said radiation detector and at least one of said data acquisition means and said switch into a multilayer structure.

An X-ray CT apparatus comprising:

• an X-ray source which emits X-rays while rotating around an object to be examined;
• a radiation detector having a plurality of detection elements for detecting X-rays passing through the object, which are arranged in row and column directions;
• data acquisition means for acquiring projection data associated with the object by using an output from said radiation detector;
• reconstruction means for reconstructing a CT image of the object on the basis of the projection data;
• and
• connection means for connecting in a one-one-one correspondence a first substrate on which said X-ray detector is mounted to a second substrate on which said data acquisition means is mounted.