Radio frequency energy deposition prediction and control method, device, system and storage medium

Abstract

The invention provides a radio-frequency energy deposition predicting and controlling method, a radio-frequency energy deposition predicting and controlling device and a radio-frequency energy deposition predicting and controlling system applied to magnetic resonance scanning, and a memory medium, wherein the method comprises the following steps: confirming the frequency, which contain various radio-frequency exciting pulses, in a multi-lamellar scanning sequence which is to be implemented; searching and extracting imaging body absorbing power factors which are pre-saved and are in correspondence to each of frequencies of the confirmed radio-frequency exciting pulses, and calculating an imaging body total absorbing power value on the basis of the imaging body absorbing power factors and a forward power value; and acquiring a pre-saved imaging body mass value, and calculating a specific absorbing rate predicted value, in accordance with the radio-frequency pulse scanning sequence which is to be implemented, on the basis of the calculated imaging body total absorbing power value and the imaging body mass value. With the application of the radio-frequency energy deposition predicting and controlling method, the device and the memory medium provided by the invention, the accuracy of the specific absorbing rate predicted value can be obviously improved.

Description

technical field [0001] The invention relates to the field of medical images, in particular to a radio frequency energy deposition prediction and control method, device and storage medium for magnetic resonance scanning. Background technique [0002] Currently, with the increasing development of medical imaging technology, it is becoming more and more important to scan an imaging body (such as a human body) based on magnetic resonance to obtain magnetic resonance images. [0003] Typically, during an MRI scan, it is necessary to monitor the deposited amount of radiofrequency energy absorbed by the imaging body within a predetermined time (for example, 6 minutes) to ensure compliance with radiofrequency safety standards (such as the YY0319 / IEC60601-2-33 standard ). Wherein, the deposition amount of radio frequency energy absorbed by the imaging object within a predetermined time is represented by SAR (Specific Absorption Rate, specific absorption rate), and if the value excee...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned conventional technical solution has the following problems: since the predicted value of SAR is calculated according to the radio frequency characteristic parameters at the center frequency, a large prediction error will be caused in the case of multi-slice scanning, thereby affecting the accuracy of the predicted value of SAR

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