MRI APPARATUS, CONTROL METHOD FOR MRI APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM STORING CONTROL PROGRAM OF MRI APPARATUS

1 . An MRI apparatus comprising processing circuitry configured to:

acquire an optical image of an object placed on a table of a bed;

acquire information on an examination portion of the object; and

select a specific RF coil to be used for imaging the examination portion of the object from a plurality of available RF coils based on the optical image and information on the plurality of available RF coils specified from the information on the examination portion.

2 . The MRI apparatus according to claim 1 , further comprising a memory configured to store information on a plurality of RF coils provided in a facility as the plurality of available RF coils, the facility being a place where the MRI apparatus is installed,

wherein the processing circuitry is configured to select the specific RF coil from the plurality of RF coils provided in the facility.

3 . The MRI apparatus according to claim 1 , further comprising a memory configured to store information on priority order for selecting the specific RF coil depending on the examination portion of the object,

wherein the processing circuitry is configured to select the specific RF coil from the plurality of available RF coils based on the priority order.

4 . The MRI apparatus according to claim 2 ,

wherein the memory is further configured to store information on priority order for selecting the specific RF coil depending on the examination portion of the object,

wherein the processing circuitry is further configured to select the specific RF coil from the plurality of available RF coils based on the priority order.

5 . The MRI apparatus according to claim 1 , wherein the information on the plurality of available RF coils includes information on:

a sensitivity region where magnetic resonance signals from the object can be detected with satisfactory sensitivity in terms of image reconstruction; and

a physical accommodation region that is part of an RF coil and can physically accommodate the examination portion of the object.

6 . The MRI apparatus according to claim 1 , wherein the processing circuitry is configured to:

estimate an examination region and a target region of the object from the optical image, wherein the examination region includes the specific examination portion of the object, and the target region is a region to be accommodated in the specific RF coil; and

select the specific RF coil based on the examination region and the target region.

7 . The MRI apparatus according to claim 6 , wherein the processing circuitry is configured to select the specific RF coil that includes:

a sensitivity region including the examination region of the object; and

a physical accommodation region including the target region of the object.

8 . The MRI apparatus according to claim 6 , wherein, in estimation of at least one of the examination region and the target region from the optical image, the processing circuitry reflects posture of the object placed on the table and bending degree of a joint if it is included in the examination portion.

9 . The MRI apparatus according to claim 1 , wherein the processing circuitry is configured to present at least one of a selected specific RF coil and a coil setting position of the selected specific RF coil to a user by using at least one of monitor display and projection display.

10 . The MRI apparatus according to claim 6 , wherein the processing circuitry is configured to:

detect movement of the object from the optical image; and

present detected information indicating that the object has moved to a user in a case of detecting the movement of the object after estimation of the examination region and the target region of the object from the optical image and before setting of the specific RF coil.

11 . A non-transitory computer-readable storage medium storing a control program for causing an MRI apparatus to execute processing comprising:

an acquisition process of acquiring an optical image of an object placed on a table of a bed and information on an examination portion of the object; and

a selection process of selecting a specific RF coil to be used for imaging the examination portion of the object from a plurality of available RF coils based on the optical image and information on the plurality of available RF coils specified from the information on the examination portion.

12 . A control method for an MRI apparatus comprising steps of:

acquiring an optical image of an object placed on a table of a bed;

acquiring information on an examination portion of the object; and

selecting a specific RF coil to be used for imaging the examination portion of the object from a plurality of available RF coils based on the optical image and information on the plurality of available RF coils specified from the information on the examination portion.