NUCLEAR MEDICINE DIAGNOSTIC DEVICE AND DATA PROCESSING DEVICE

1 . A nuclear medicine diagnostic device comprising a processing circuit configured to

extract, in a first nuclear medicine image formed as a result of performing respiratory-gated reconstruction with respect to nuclear medicine data obtained by performing nuclear medicine scanning of a subject, a region in which body motion is occurring, and

control a display in such a way that the region is displayed in an identifiable manner in the first nuclear medicine image.

2 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to superimpose color display of the region on the first nuclear medicine image.

3 . The nuclear medicine diagnostic device according to claim 2 , wherein, according to magnitude of the body motion, the processing circuit is configured to vary tone of colors displayed in the color display.

4 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to

perform the respiratory-gated reconstruction further based on waveform data of respiration of the subject to generate the first nuclear medicine image,

perform non-respiratory-gated reconstruction based on the nuclear medicine data to generate a second nuclear medicine image, and

extract the region based on difference between the first nuclear medicine image and the second nuclear medicine image.

5 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to

perform the respiratory-gated reconstruction further based on the nuclear medicine data to generate the first nuclear medicine image, and

identify, based on the obtained nuclear medicine data, target data range for gating to be subjected to the respiratory-gated reconstruction, and perform the respiratory-gated reconstruction based on the identified data range.

6 . The nuclear medicine diagnostic device according to claim 5 , wherein the processing circuit is configured to

perform time division of the nuclear medicine data to generate sets of time-divided nuclear medicine data,

perform reconstruction of each of the generated sets of time-divided nuclear medicine data to generate a post-reconstruction time-divided nuclear medicine image,

extract a respiratory waveform from the generated time-divided nuclear medicine image, and

identify the data range from the extracted respiratory waveform.

7 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to extract the region from the nuclear medicine data using a neural network.

8 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to extract the region based on amount of fluctuation in signal value of time-divided data obtained from the nuclear medicine data.

9 . The nuclear medicine diagnostic device according to claim 1 , wherein the processing circuit is configured to extract the region by performing principal component analysis.

10 . The nuclear medicine diagnostic device according to claim 9 , wherein the processing circuit is configured to extract the region based on a factor loading value of a principal component obtained by performing the principal component analysis.

11 . A data processing device comprising a processing circuit configured to:

in a nuclear medicine image formed as a result of performing respiratory-gated reconstruction with respect nuclear medicine data obtained by performing nuclear medicine scanning of a subject, extract a region in which body motion is occurring, and

control a display in such a way that the region is displayed in an identifiable manner in the nuclear medicine image.