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NCT04954963 Clinical Trial

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

Spinal Disease Clinical Trial

Official 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

Clinical Trial Details — Status: Completed

Administrative data
NCT number NCT04954963
Other study ID # M2019317
Secondary ID
Status Completed
Phase
First received
Last updated
Start date December 1, 2019
Est. completion date October 30, 2020

Study information
Verified date December 2019
Source Peking University Third Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

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.

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.

Recruitment information / eligibility
Status Completed
Enrollment 50
Est. completion date October 30, 2020
Est. primary completion date December 1, 2019
Accepts healthy volunteers No
Gender All
Age group N/A and older
Eligibility 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 Design

Related Conditions & MeSH terms

Intervention

Diagnostic Test:
• Reduce metal artifacts examination
patients undergo reduce metal artifacts examination

Locations
Country Name City State
China Peking University Third Hospital Beijing Beijing

Sponsors (1)
Lead Sponsor Collaborator
Peking University Third Hospital

Country where clinical trial is conducted

China, 

Outcome
Type Measure Description Time frame Safety issue
Primary Artifact index AI in region of interest 2020.10.15-2020.10.30
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