Myocardium T1 value measuring method and system

A technology of myocardium and heartbeat cycle, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve the problem of long acquisition time, achieve the effect of improving acquisition efficiency and avoiding errors

Active Publication Date: 2014-09-03
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
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Problems solved by technology

[0006] These two commonly used methods take a long time to collect, requiring 10 to 17 heartbeat cycles

Method used

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  • Myocardium T1 value measuring method and system
  • Myocardium T1 value measuring method and system
  • Myocardium T1 value measuring method and system

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] In one embodiment, such as figure 1 As shown, a method for measuring myocardial T1 value is provided, the method comprising:

[0048] Step 102 , applying a non-layer-selected inversion pulse to the detected object after a delay time for triggering the ECG gating.

[0049] In this embodiment, the ECG (Electrocardiograph, electrocardiogram) of the detected object is used as the trigger signal, and after the trigger delay time, a non-layer-selected inversion pulse is applied to the object. The delay time of the ECG gating is to ensure that the initial inversion recovery signal is collected du...

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Abstract

A myocardium T1 value measuring method includes the steps that after when delay time is triggered through electrocardiograph gating, non-layer-selection inversion pulses are applied to a detected object; real-time data are acquired in the whole cardiac cycle many times through a fast spoiled gradient echo small-angle excitation sequence, and a set of sampling images are obtained; the images in the diastole period are selected from the sampling images to serve as effective images, and motion correction and registration are performed on the effective images; curve fitting is performed on the registered images, and a Ti value image is obtained. Through the method, the acquisition efficiency is improved, and the T1 value can be effectively measured. The invention further provides a myocardium T1 value measuring system.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a method and system for measuring myocardial T1 value. Background technique [0002] Cardiovascular magnetic resonance imaging is a non-invasive imaging technique that evaluates the function, shape, and structure of the cardiovascular system. The quantification of myocardial T1 value can be used in the diagnosis of various diseases such as myocardial infarction and myocardial fibrosis. Quantitative measurement of myocardial T1 values ​​in vivo is still very challenging due to the limitation of acquisition time by heart beating and respiratory motion. [0003] There are two commonly used methods for measuring myocardial T1 values: [0004] (1) Modified Look-Locker inversion recovery (Modified Look-Locker inversion recovery, referred to as MOLLI): After the inversion pulse, use the Balanced Steady-State Free Procession sequence (Balanced Steady-State Free Proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
Inventor 钟耀祖朱燕杰刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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