Back to Search
Start Over
Magnetic resonance cinematography of the fingers: a 3.0 Tesla feasibility study with comparison of incremental and continuous dynamic protocols.
- Source :
-
Skeletal Radiology . Dec2017, Vol. 46 Issue 12, p1721-1728. 8p. - Publication Year :
- 2017
-
Abstract
- <bold>Objective: </bold>To study the feasibility of magnetic resonance cinematography of the fingers (MRCF) with comparison of image quality of different protocols for depicting the finger anatomy during motion.<bold>Materials and Methods: </bold>MRCF was performed during a full flexion and extension movement in 14 healthy volunteers using a finger-gating device. Three real-time sequences (frame rates 17-59 images/min) and one proton density (PD) sequence (3 images/min) were acquired during incremental and continuous motion. Analyses were performed independently by three readers. Qualitative image analysis included Likert-scale grading from 0 (useless) to 5 (excellent) and specific visual analog scale (VAS) grading from 0 (insufficient) to 100 (excellent). Signal-to-noise calculation was performed. Overall percentage agreement and mean absolute disagreement were calculated.<bold>Results: </bold>Within the real-time sequences a high frame-rate true fast imaging with steady-state free precession (TRUFI) yielded the best image quality with Likert and overall VAS scores of 3.0 ± 0.2 and 60.4 ± 25.3, respectively. The best sequence regarding image quality was an incremental PD with mean values of 4.8 ± 0.2 and 91.2 ± 9.4, respectively. Overall percentage agreement and mean absolute disagreement were 47.9 and 0.7, respectively. No statistically significant SNR differences were found between continuous and incremental motion for the real-time protocols.<bold>Conclusion: </bold>MRCF is feasible with appropriate image quality during continuous motion using a finger-gating device. Almost perfect image quality is achievable with incremental PD imaging, which represents a compromise for MRCF with the drawback of prolonged scanning time. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03642348
- Volume :
- 46
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Skeletal Radiology
- Publication Type :
- Academic Journal
- Accession number :
- 125825838
- Full Text :
- https://doi.org/10.1007/s00256-017-2742-2