CT Mar Technology and MR Mavric, Semac Sequence in Removing Artifacts of Orthopedic Metal Internal Fixation

NCT ID: NCT04954963

Last Updated: 2021-07-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-12-01

Study Completion Date

2020-10-30

Brief Summary

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1\. Objective to compare the effect of single energy imaging and mar technology in reducing artifacts of knee and hip replacement, and to explore the appropriate keV range of Mar technology in removing metal artifacts.,2. Objective to compare the effects of different MRI sequences (mavric / semac, stir, ideal, FSE) in removing artifacts of spinal internal fixation, knee and hip replacement.

Detailed Description

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Conventional spiral CT \[4\] examination will form black-and-white stripe artifacts around the metal implant, making the display of adjacent important structures unclear. In routine MRI examination \[5\], metal will interfere with the uniformity of local magnetic field, resulting in signal loss, and the artifacts will seriously affect the observation of bone and its surrounding structures.

The purpose of this study was to comprehensively evaluate the effect of Mar technology on reducing metal artifacts after internal fixation and joint replacement, and then to explore the appropriate keV range of Mar technology to reduce metal artifacts. We also aim to compare the reduction effect of different sequences of MRI on internal fixation artifacts after internal fixation and joint replacement, and to explore the sequence suitable for clinical diagnosis and treatment.

Conditions

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Spinal Disease

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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conventional examination

patients undergo conventional examination

No interventions assigned to this group

Reduce metal artifacts examination

patients undergo reduce metal artifacts examination

Reduce metal artifacts examination

Intervention Type DIAGNOSTIC_TEST

patients undergo reduce metal artifacts examination

Interventions

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Reduce metal artifacts examination

patients undergo reduce metal artifacts examination

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Patients after spinal internal fixation or knee or hip replacement

Exclusion Criteria

* Patients with poor image quality caused by their own factors such as patients' movement can not meet the diagnostic requirements
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Peking University Third Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Huishu Yuan

Role: STUDY_CHAIR

Peking University Third Hospital

Locations

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Peking University Third Hospital

Beijing, Beijing Municipality, China

Site Status

Countries

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China

Other Identifiers

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M2019317

Identifier Type: -

Identifier Source: org_study_id

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