NCT04954963

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

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

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 50 (actual)
• Sponsor: Peking University Third Hospital · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

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.

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.

Conditions

• Spinal Disease

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Reduce metal artifacts examination	patients undergo reduce metal artifacts examination

Timeline

• Start date: 2019-12-01
• Primary completion: 2019-12-01
• Completion: 2020-10-30
• First posted: 2021-07-08
• Last updated: 2021-07-08

Locations

1 site across 1 country: China