Magnetic resonance imaging apparatus and image reconstruction method
AssigneeFUJIFILM Corporation
InventorsToru Shirai, Yukio Kaneko, Yosuke Otake
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Abstract
Provided is a weighted reconstruction technique of a channel for suppressing a blood flow artifact and a body movement artifact in imaging using a multi-channel reception coil. In a case of reconstructing an image of a subject by using a nuclear magnetic resonance signal collected by each of a plurality of channels of a reception coil, by using a positioning image, an organ or a region causing a blood flow artifact and a body movement artifact in the subject is specified, a weight of each channel is decided by using information on the specified organ or region, and weighted reconstruction is performed by using the weight.
Claims11
A magnetic resonance imaging apparatus comprising:
- an imaging unit that includes a reception coil, which has a plurality of channels, detecting a nuclear magnetic resonance signal generated by a subject, and that collects the nuclear magnetic resonance signal via the reception coil;
- and
- one or more processors configured to conduct operation,
- wherein the one or more processors include
- a reconstruction unit that reconstructs an image by using the nuclear magnetic resonance signal collected by each channel of the reception coil, and
- is configured to specify an organ or a region causing a blood flow artifact or a body movement artifact in the subject by using a subject image reconstructed for each channel, and
- decide a weight of each channel by using information on the specified organ or the region, and
- the reconstruction unit performs weighted reconstruction by using the decided weight and the nuclear magnetic resonance signal of each channel.
An image reconstruction method of reconstructing an image of a subject by using a nuclear magnetic resonance signal collected by each of a plurality of channels of a reception coil, the method comprising:
- specifying an organ or a region causing a blood flow artifact and a body movement artifact in the subject;
- and
- deciding a weight of each channel by using information on the specified organ or region, and performing weighted reconstruction by using the weight.
Dependencies are inferred from the claim text.