Korean J Radiol.  2017 Apr;18(2):289-298. 10.3348/kjr.2017.18.2.289.

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

Affiliations
  • 1Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea. kyungwon_kim@amc.seoul.kr
  • 2Department of Radiology, Yonsei University College of Medicine, Severance Hospital, Seoul 03722, Korea.
  • 3Department of Radiology, Ajou Unversity School of Medicine, Suwon 16499, Korea.
  • 4Department of Radiology, Ulsan University Hospital, Ulsan 44033, Korea.
  • 5Siemens Healthcare Korea, Seoul 03737, Korea.
  • 6MR Application Predevelopment, Siemens Healthcare, Erlangen 91052, Germany.

Abstract


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.

Keyword

Dynamic contrast-enhanced; Magnetic resonance imaging; Phantom study; Free-breathing; Respiratory motion; Parallel imaging technique; CAIPIRINHA-VIBE

MeSH Terms

Contrast Media/chemistry
Humans
Image Enhancement/instrumentation/*methods
*Magnetic Resonance Imaging/instrumentation
Phantoms, Imaging
Reproducibility of Results
Signal-To-Noise Ratio
Contrast Media
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