49 81

Cited 1 times in

The Effects of Breathing Motion on DCE-MRI Images: Phantom Studies Simulating Respiratory Motion to Compare CAIPIRINHA-VIBE, Radial-VIBE, and Conventional VIBE

 Chang Kyung Lee  ;  Nieun Seo  ;  Bohyun Kim  ;  Jimi Huh  ;  Jeong Kon Kim  ;  Seung Soo Lee  ;  In Seong Kim  ;  Dominik Nickel  ;  Kyung Won Kim 
 KOREAN JOURNAL OF RADIOLOGY, Vol.18(2) : 289-298, 2017 
Journal Title
Issue Date
Contrast Media/chemistry ; Humans ; Image Enhancement/instrumentation ; Image Enhancement/methods* ; Magnetic Resonance Imaging*/instrumentation ; Phantoms, Imaging ; Reproducibility of Results ; Signal-To-Noise Ratio
CAIPIRINHA-VIBE ; Dynamic contrast-enhanced ; Free-breathing ; Magnetic resonance imaging ; Parallel imaging technique ; Phantom study ; Respiratory motion
OBJECTIVE: To compare the breathing effects on dynamic contrast-enhanced (DCE)-MRI between controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA)-volumetric interpolated breath-hold examination (VIBE), radial VIBE with k-space-weighted image contrast view-sharing (radial-VIBE), and conventional VIBE (c-VIBE) sequences using a dedicated phantom experiment. MATERIALS AND METHODS: We developed a moving platform to simulate breathing motion. We conducted dynamic scanning on a 3T machine (MAGNETOM Skyra, Siemens Healthcare) using CAIPIRINHA-VIBE, radial-VIBE, and c-VIBE for six minutes per sequence. We acquired MRI images of the phantom in both static and moving modes, and we also obtained motion-corrected images for the motion mode. We compared the signal stability and signal-to-noise ratio (SNR) of each sequence according to motion state and used the coefficients of variation (CoV) to determine the degree of signal stability. RESULTS: With motion, CAIPIRINHA-VIBE showed the best image quality, and the motion correction aligned the images very well. The CoV (%) of CAIPIRINHA-VIBE in the moving mode (18.65) decreased significantly after the motion correction (2.56) (p < 0.001). In contrast, c-VIBE showed severe breathing motion artifacts that did not improve after motion correction. For radial-VIBE, the position of the phantom in the images did not change during motion, but streak artifacts significantly degraded image quality, also after motion correction. In addition, SNR increased in both CAIPIRINHA-VIBE (from 3.37 to 9.41, p < 0.001) and radial-VIBE (from 4.3 to 4.96, p < 0.001) after motion correction. CONCLUSION: CAIPIRINHA-VIBE performed best for free-breathing DCE-MRI after motion correction, with excellent image quality.
Files in This Item:
T201702402.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Seo, Nieun(서니은) ORCID logo https://orcid.org/0000-0001-8745-6454
사서에게 알리기


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.