Magnetic resonance temperature imaging method and system based on biological heat transfer model

Abstract

The invention discloses a magnetic resonance temperature imaging method and system based on a biological heat transfer model. The method comprises the following steps of S101, introducing the biological heat transfer model into a hybrid algorithm, and modifying a regular constraint term, S102, performing optimization processing and real-time updating on parameters of the biological heat transfer model by utilizing a magnetic resonance temperature imaging model in a temperature distribution calculation process, and S103, combining the biological heat transfer model with the magnetic resonance temperature imaging model by using a Kalman filter, and iteratively updating the image. According to the magnetic resonance temperature imaging method based on the biological heat transfer model, on one hand, the inhibition capability of a hybrid algorithm on motion and temperature drift can be reserved; on the other hand, the reconstruction error of the area with small temperature change can be greatly improved, the applicability of the hybrid algorithm is improved, and the prediction accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a magnetic resonance temperature imaging method and system based on a biological heat transfer model. Background technique [0002] Hyperthermia technology, as a minimally invasive or even non-invasive new tumor treatment method, has the advantages of low mortality, low recurrence rate, and rapid postoperative recovery. The core purpose of tumor hyperthermia is to inactivate tumor cells while ensuring The safety of healthy tissue cells. In order to achieve this goal, it is necessary to pay close attention to the temperature changes in the heated area and surrounding normal tissues during tumor hyperthermia, so as to evaluate the progress of the operation according to the thermal tolerance of different tissues and make a reasonable operation plan. [0003] Magnetic resonance temperature imaging (magnetic resonance temperature imaging, MRTI) can perform near-real-ti...

AI Technical Summary

Problems solved by technology

However, when the hardware facilities and selected sequences are fixed, time resolution, spatial resolution and image quality cannot be achieved simultaneously in the imaging process.

Therefore, there is room for improvement in the above techniques

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