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Application of 3D-Matrix in Knee Joint Sports Injury

NCT04957043 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 150

Last updated 2021-07-12

No results posted yet for this study

Summary

3 d scan sequence can realize continuous thin layer scanning, the thinnest layer thickness of 0.5 mm, to reduce the effects of partial volume effect and improve the spatial resolution image, the other 3 d sequence can according to need to multiplanar reconstruction based on the original image, the image of the watch is no longer limited to a fixed plane, and can avoid repeated scanning, reducing overall inspection time. Initially, 3D MRI uses gradient echo sequences (3D-GRE). Although the scan time of 3D-GRE is acceptable and has a high spatial resolution, the contrast between tissues is poor. In recent years, is voxel 3D fast spin-echo sequence (3D-FSE) has become an alternative 3D scanning sequence. Compared with the 3D-GRE sequence, 3D-FSE has better-intertissued contrast. However, there are still some problems in the application of 3D sequence in clinical practice. On the one hand, although 3D sequence reduces the overall scanning time, it increases the single scanning time, so it is easy to produce motion artifacts. On the other hand, although many studies have demonstrated the diagnostic efficacy of 3D sequences in the diagnosis of common intraarticular structural injuries, especially in the diagnosis of knee cartilage injuries, the diagnostic value of 3D sequences is comparable to that of conventional 2D-FSE sequences, but the evidence on whether 3D sequences can replace 2D sequences is still insufficient.

Recently, a new fast signal acquisition technology -- Compressed Sensing (Compressed Sensing) technology has been gradually applied to many kinds of MRI sequences, and its application in 3D sequences can greatly shorten the single scan time. In this study, Modulated Flip Angle Technique in Refocused Imaging with Extended Echo was applied by United Imaging Co., Ltd. (Compressed Sensing) Train, 3D-Matrix), which is a fast self-selected echo sequence based on variable turn Angle technology, and its single scan time can be shortened to 5 minutes. 3 d sequence to more systematic evaluation on sports injury of knee joint application value, the investigators will study from within the bony structure of knee joint injury, joint structure damage and injury of the surrounding support structure aspects to discuss the diagnosis effect, and with arthroscopy for the gold standard to evaluate the accuracy of the 3 d structure within the sequence in the diagnosis of knee joint injury.

Conditions

  • MRI

Sponsors & Collaborators

  • Peking University Third Hospital

    lead OTHER

Principal Investigators

  • huishu yuan · Peking University Third Hospital

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-03-01
Primary Completion
2018-07-01
Completion
2019-06-01

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04957043 on ClinicalTrials.gov