Radiological imaging apparatus and timing correction method therefor

A radiological imaging apparatus comprising:

• a plurality of radiation detectors;
• signal processing apparatuses connected to the plurality of radiation detectors individually;
• a test signal generator which outputs a test signal to a plurality of said signal processing apparatuses;
• a time generator connected to a plurality of said signal processing apparatuses individually, which generates time information based on corresponding outputs of said signal processing apparatuses;
• and
• a calibration data generator which generates timing calibration data based on outputs of a plurality of said time generators.

A radiological imaging apparatus comprising:

• a plurality of radiation detectors;
• signal processing apparatuses connected to the plurality of radiation detectors individually;
• a test signal generator which outputs a test signal to a plurality of said signal processing apparatuses;
• a delay adjustment apparatus connected to a plurality of said signal processing apparatuses individually, which adjusts an amount of delay of outputs of said signal processing apparatuses;
• and
• a calibration data generator which generates timing calibration data based on outputs of a plurality of said delay adjustment apparatuses.

A radiological imaging apparatus comprising:

• a plurality of radiation detectors;
• signal processing apparatuses connected to the plurality of radiation detectors individually;
• a test signal generator which outputs a test signal to a plurality of said signal processing apparatuses;
• a calibration data generator which generates timing calibration data based on outputs of a plurality of said signal processing apparatuses;
• and
• an apparatus which corrects timings of radiation detection signals outputted from said radiation detectors based on said timing calibration data.

A radiological imaging apparatus comprising:

• a plurality of radiation detectors;
• signal processing apparatuses connected to the plurality of radiation detectors individually;
• a test signal generator which outputs a test signal to a plurality of said signal processing apparatuses;
• a time generator connected to a plurality of said signal processing apparatuses individually, which generates time information based on corresponding outputs of said signal processing apparatuses;
• a calibration data generator which generates timing calibration data based on a plurality of outputs of said time generator;
• and
• a time correction apparatus connected to a plurality of said time generators, which corrects time information outputted from said time generator based on radiation detection signals of said radiation detectors using said timing calibration data.

A radiological imaging apparatus comprising:

• a plurality of radiation detectors;
• signal processing apparatuses connected to the plurality of radiation detectors individually;
• a test signal generator which outputs a test signal to a plurality of said signal processing apparatuses;
• a delay adjustment apparatus connected to a plurality of said signal processing apparatuses individually, which adjusts amounts of delay of outputs of said signal processing apparatuses;
• and
• a calibration data generator which generates timing calibration data based on outputs of a plurality of said delay adjustment apparatuses and adjusts an amount of delay of said delay adjustment apparatus based on said timing calibration data.

A timing correction method for a radiological imaging apparatus, comprising the steps of:

• inputting a test signal outputted from a test signal generator to a plurality of signal processing apparatuses connected to radiation detectors;
• generating timing calibration data based on outputs of a plurality of said signal processing apparatuses generated by said test signal;
• and
• correcting timings of radiation detection signals outputted from said radiation detectors based on this timing calibration data.

A tomogram creation method for a radiological imaging apparatus, comprising the steps of:

• inputting a test signal outputted from a test signal generator to a plurality of signal processing apparatuses connected to radiation detectors;
• generating timing calibration data based on outputs of a plurality of said signal processing apparatuses generated based on said test signal;
• then, correcting time information obtained based on radiation detection signals outputted from said radiation detectors with said timing calibration data;
• performing coincidence counting using said corrected time information;
• and
• creating a tomogram based on information obtained from said coincidence count.