Fetal magnetic resonance imaging method and device

Abstract

The invention relates to the technical field of magnetic resonance imaging, and discloses a fetal magnetic resonance imaging method and device. The imaging method comprises the following steps: a first receiving coil is arranged at a tissue to be measured in a covering manner; a high-dielectric-constant lining pad is attached to the tissue to be measured, and is placed between an examination bed of the magnetic resonance imaging acquisition device and the tissue to be measured, wherein the high-dielectric-constant lining pad comprises a dielectric material prepared by uniformly mixing barium titanate and water or deuterium oxide in a set weight proportion; the high-dielectric-constant lining pad is matched with the first receiving coil. The magnetic resonance imaging acquisition device isused for penetrating the dielectric material of the high dielectric constant liner pad to acquire magnetic resonance images of the tissue to be measured. The invention provides a new fetal examinationtechnology for pregnant women; the problems are solved by cooperation of the liner pad prepared by a barium titanate preparation material with high dielectric constant and an optimized scanning scheme for side lying position of pregnant women.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a fetal magnetic resonance imaging method and a device thereof. Background technique [0002] For many years, prenatal ultrasound (Ultrasound, US) examination has been the preferred imaging examination method for prenatal fetal examination. [0003] Among them, ultrasound can accurately visualize the fetal structure and has the advantages of non-invasiveness, convenient and simple examination, and low cost. However, the image acquisition effect depends too much on the doctor's technique and experience, and this technology can only be developed in real time, and it is not convenient to review the images later. data. [0004] However, ultrasonography also has deficiencies to a certain extent, and needs other examination methods to be perfected. [0005] The imaging techniques currently available for fetal examination in pregnant women mainly include ultrasound ...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that during the magnetic resonance examination of the fetus of a pregnant woman, due to the influence of human tissue, the radio frequency emission field is very uneven in the fetal part of the abdomen, resulting in an increase in the special absorption rate (SAR) of some tissues , there are potential safety hazards; at the same time, the MRI images are very uneven, especially the signal in the deep part of the pregnant woman's abdomen (such as the fetal brain, heart) is very weak, resulting in the possibility of missed diagnosis or undiagnosed

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