US 12,232,844 B2
Brain measurement apparatus and brain measurement method
Takenori Oida, Hamamatsu (JP); Takahiro Moriya, Hamamatsu (JP); Akinori Saito, Hamamatsu (JP); Motohiro Suyama, Hamamatsu (JP); and Tetsuo Kobayashi, Kyoto (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP); and Kyoto University, Kyoto (JP)
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP); and Kyoto University, Kyoto (JP)
Filed on Jun. 1, 2022, as Appl. No. 17/829,428.
Claims priority of application No. 2021-094331 (JP), filed on Jun. 4, 2021.
Prior Publication US 2022/0386873 A1, Dec. 8, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/055 (2006.01); A61B 5/245 (2021.01); G01R 33/00 (2006.01); G01R 33/022 (2006.01); G01R 33/032 (2006.01); G01R 33/26 (2006.01); G01R 33/385 (2006.01)
CPC A61B 5/0042 (2013.01) [A61B 5/055 (2013.01); A61B 5/245 (2021.01); A61B 5/6803 (2013.01); G01R 33/0076 (2013.01); G01R 33/0094 (2013.01); G01R 33/022 (2013.01); G01R 33/032 (2013.01); G01R 33/26 (2013.01); G01R 33/385 (2013.01); A61B 2562/0223 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A brain measurement apparatus configured to generate an MR image and a brain's magnetic field distribution of a subject, comprising:
an MRI module having a transmission coil configured to transmit a transmission pulse toward the subject and a detection coil configured to detect a nuclear magnetic resonance signal generated in the subject by the transmission pulse;
an optically pumped magnetometer configured to detect a brain's magnetic field of the subject;
a generator configured to generate the MR image based on the nuclear magnetic resonance signal detected by the detection coil and to generate the brain's magnetic field distribution based on the brain's magnetic field detected by the optically pumped magnetometer;
a fiducial marker configured to be placed on a head of the subject and displayed on the MR image generated by the generator; and
a helmet-type frame to which the detection coil, the optically pumped magnetometer, and the fiducial marker are attached and which is attached to the head of the subject, wherein the detection coil of the MRI module is located closer to a scalp of the head of the subject inside the helmet-type frame than is the optically pumped magnetometer.