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

July 1, 2021 updated by: Peking University Third Hospital

Objective to Explore the Clinical Application Value of Spectral CT Mar Technology and Magnetic Resonance Mavric, Semac Sequence in Removing Artifacts of Orthopedic Metal Internal Fixation

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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

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.

Study Type

Observational

Enrollment (Actual)

50

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Beijing
      • Beijing, Beijing, China, 010
        • Peking University Third Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

From December 2019 to October 2020, patients who were reexamined after spinal internal fixation or knee and hip replacement in Peking University Third Hospital.

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
conventional examination
patients undergo conventional examination
Reduce metal artifacts examination
patients undergo reduce metal artifacts examination
Diagnostic test: Reduce metal artifacts examination
patients undergo reduce metal artifacts examination

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Artifact index
Time Frame: 2020.10.15-2020.10.30
AI in region of interest
2020.10.15-2020.10.30

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Peking University Third Hospital

Investigators

  • Study Chair: Huishu Yuan, Peking University Third Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2019

Primary Completion (Actual)

December 1, 2019

Study Completion (Actual)

October 30, 2020

Study Registration Dates

First Submitted

June 29, 2021

First Submitted That Met QC Criteria

July 1, 2021

First Posted (Actual)

July 8, 2021

Study Record Updates

Last Update Posted (Actual)

July 8, 2021

Last Update Submitted That Met QC Criteria

July 1, 2021

Last Verified

December 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • M2019317

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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