Fujifilm Healthcare Corporation

Tomohiro Gotou

Masahiro Takizawa

Hisako Nagao

Ayaka Ikegawa

To suppress the image quality deterioration due to respiratory motion and changes thereof, and improve the data acquisition rate. An MRI device according to the present invention repeats a main measurement in a predetermined unit, and performs a navigation measurement to acquire one or a plurality of the navigator echoes between the measurements in the temporally adjacent two predetermined units, and performs determination as to whether to continue or discontinue the main measurement and determination as to whether to discard immediately prior measurement data. In the determination, at least two navigator echoes are used, and by using a position of a site to be monitored by the navigation measurement and a displacement width serving as a reference of the displacement stability, whether the position and the displacement width satisfy a reference displacement and a reference displacement width, which have been obtained in advance, is determined.

Magnetic resonance imaging device

Imaging failure of a positioning image due to the difference in the position or the size of a subject placed in the examination space is prevented, and accordingly, the extension of the examination time is prevented. A pre-scan for appropriately setting the imaging position for positioning imaging is automatically performed prior to the positioning imaging and the main imaging of an MRI apparatus, and a region where an examination part of a subject is present (the extent of the examination part) is detected using the measurement data. By using the detected extent of the examination part, it is possible to subsequently determine the imaging position or calculate the scan parameters used for imaging.

Growing community of inventors

Tokyo, Japan

Tomohiro Gotou