Quantitative fast frequency-locked magnetic resonance imaging method

A magnetic resonance imaging and frequency-locking technology, which is applied in the field of medical diagnosis, can solve problems such as difficult application value of technology, difficulty in making further progress, and prolonged scanning time, so as to avoid poor ECG-respiration triggering and reduce the loss of effective ECG signals , The effect of shortening the scanning time
CN108175409AActive Publication Date: 2018-06-19้ƒœๅ‘ๅฎ
5 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
้ƒœๅ‘ๅฎ
Publication Date
2018-06-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a quantitative fast frequency-locked magnetic resonance imaging method. Data acquisition of magnetic resonance imaging signals corresponding to different spin lock pulses in acontinuous scanning period is completed, and the data fills the same position in K space, so that T1rhomapping images finally obtained corresponding to the different spin lock pulses have high matching degree and can be used for judging tissue fibrosis indexes and diagnosing a tissue edema state; the effects of arrhythmia, uneven breathing and the like on the quality of the T1rhomapping images areminimized, and physical state and ability to suspend breathing and the like of a tester are not strictly required, so that scanning time required to obtain the T1rhomapping images is greatly shortened and the research and promotion of a T1rhomapping imaging technology in the field of clinical medical detection is further developed; in addition, the spin lock pulses alternate in positive and negative phases in adjacent RF excitation pulses, thereby effectively reducing artifacts due to magnetic field uniformity.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of medical diagnosis, and relates to a magnetic resonance scanning method that requires ECG and respiratory gating navigation for clinical heart and the like. Background technique

[0002] Magnetic resonance imaging (MRI, Magnetic Resonance Imaging) has been widely used in clinical examination and experimental research of diseases in recent years. It detects T 1 Relaxation time (i.e. spin-lattice relaxation time) and T 2 The difference in relaxation time (spin-spin relaxation time) is obtained by Fourier transform to obtain images of related tissues, so as to display various tissues and the changes caused by different pathologies in the form of images.

[0003] The spin-locked pulse refers to the transverse excitation magnetic field B under the MRI system 1 (B 1 โ‰ฅ0) The low-amplitude radio frequency (RF) pulse generated by the action is a resonant and continuous radio frequency pulse wave with a specific ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More