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Completed

NCT Number: NCT04954963

CT Mar Technology and MR 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.

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Key information

Conditions

Spinal Disease Bone Diseases Musculoskeletal Diseases Spinal Diseases

Sex eligibility

All sexes

Study type

Observational

Primary location

Peking University Third Hospital

Beijing, Beijing Municipality, 010, China

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Reduce metal artifacts examination

Diagnostic Test

patients undergo reduce metal artifacts examination

Primary outcomes

  1. Artifact index

    Time frame: 2020.10.15-2020.10.30

    AI in region of interest

Sponsors and collaborators

Lead sponsor

Peking University Third Hospital

Other

Registry information

Official study title

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

Important dates

Study start
2019
Primary completion
2019
Study completion
2020
First posted
Jul 8, 2021
Registry last updated
Jul 8, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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