Breath holding MR imaging method, MRI apparatus, and tomographic imaging apparatus

Abstract

When two or more run of breath holding imaging with breathing interval therebetween is conducted, the present invention allows the slice position to follow the positional displacement of organ in each run. The present invention comprises an image capturing step for the navigator for imaging an MR image having the imaging area including the diaphragm during breath holding, a diaphragm position obtaining step for obtaining the diaphragm position by analyzing the navigator image, an image capturing step for the actual imaging for capturing an MR image of a desired slice during breath holding, and a breathing interval step for releasing respiration, in which these steps are iteratively repeated for twice or more. The slice position of second session or later is made to be a position which is set such that the slice position of first run is compensated for by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later.

Description

technical field [0001] The present invention relates to a breath-hold MR (magnetic resonance) imaging method, an MRI (magnetic resonance imaging) device, a breath-hold tomography imaging method, and a tomography imaging device, more particularly to such a breath-hold MR (magnetic resonance) imaging method, MRI ( magnetic resonance imaging) devices, breath-hold tomography imaging methods, and tomographic imaging devices that allow slice positions according to displacement of organs between repeated imaging sessions of two or more breath-hold imaging with expiration times in between. Background technique [0002] So far, when two or more breath-hold imaging sessions have an expiratory interval in between, a method has been proposed that uses observation of the position of the diaphragm to guide the breath-hold while the diaphragm is in the same position (e.g. cite below Patent Document 1). [0003] On the other hand, when performing non-breath-hold imaging (during non-breath-...

AI Technical Summary

Problems solved by technology

However, when there are two or more repeated breath-hold imaging sessions with expiratory intervals in between, fluctuations in breath-hold timing within each interval will continue and eventually the position of the diaphragm will change when the breath is actually held

This also poses a problem for Patent Document 2 in that the position of the organ relative to the slice position changes during each breath-hold imaging

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