Radiation imaging apparatus and nuclear medicine diagnosis apparatus using the same

A nuclear medicine diagnosis apparatus that uses a radiation imaging apparatus, the radiation imaging apparatus comprising:

• a plurality of rectangular detectors that are arranged in a grid pattern;
• a radiation measurement circuit for reading detection signals of the detectors;
• a collimator in which a plurality of rectangular through-holes are arranged in a grid pattern and separated by septa;
• and
• a data processing device for acquiring detection signals from the detectors and generating image information,
• wherein the collimator is rotated through a predetermined angle in relation to the layout of the detectors as viewed from above,
• wherein the predetermined angle ranges from 20 deg to 70 deg,
• wherein the collimator pitch is from √{square root over (2)} to less than 2.0 times the detector pitch, and
• wherein the data processing device performs a 3×3 matrix smoothing filter process.

A radiation imaging apparatus comprising:

• pixel type detectors that acquire the position information about radiation incident on image pixels that are arranged in a grid pattern;
• a radiation measurement circuit for reading detection signal of the detector;
• a collimator in which a plurality of rectangular through-holes are arranged in a grid pattern and separated by septa;
• and
• an information creation device for acquiring detection signals from the detectors and generating image information,
• wherein the collimator is rotated through a predetermined angle in relation to the layout of the detectors as viewed from above,
• wherein the predetermined angle ranges from 20 deg to 70 deg,
• wherein the collimator pitch is from √{square root over (2)} to less than 2.0 times the detector pitch, and wherein the information creation device performs a 3×3 matrix smoothing filter process.

A nuclear medicine diagnosis apparatus, comprising:

• a radiation imaging apparatus;
• a gantry for supporting the radiation imaging apparatus;
• and
• a display device for displaying the image information,
• wherein the radiation imaging apparatus comprises:
• pixel type detectors that acquire the position information about radiation incident on image pixels that are arranged in a grid pattern;
• a radiation measurement circuit for reading detection signal of the detector;
• a collimator in which a plurality of rectangular through-holes are arranged in a grid pattern and separated by septa;
• and
• an information creation device for acquiring detection signals from the detectors and generating image information,
• wherein the collimator is rotated through a predetermined angle in relation to the layout of the detectors as viewed from above,
• wherein the predetermined angle ranges from 20 deg to 70 deg,
• wherein the collimator pitch is from √{square root over (2)} to less than 2.0 times the detector pitch, and
• wherein the information creation device performs a 3×3 matrix smoothing filter process.