Abstract #4520
Three-dimensional Super-Resolution Technique for Whole-Heart Coronary MRA by Utilizing Graphical Processing Unit
Ryohei Nakayama 1 , Masaki Ishida 1 , Yasutaka Ichikawa 1 , Yoshitaka Goto 1 , Motonori Nagata 1 , Kakuya Kitagawa 1 , and Hajime Sakuma 1
1
Department of Radiology, Mie University
School of Medicine, Tsu, Mie, Japan
A 3D SR technique was developed to improve image
resolution and quality of whole-heart coronary MRA (WHCMRA)
by utilizing GPUs. WHCMRA images with 0.6x0.6x0.75 mm
resolution were reconstructed from the down-sampled
WHCMRA images (1.2x1.2x1.5 mm) by using 3D SR technique,
2D SR technique and 3D bicubic interpolation. The
computational time with 3D SR technique per patient
considerably reduced from 4 h and 41.1 min to 45.5 min
by the parallel implementation in GPUs. Root mean square
error, structural similarity index and signal-to-noise
ratio for 3D SR technique were 2.85, 0.984 and 65.8,
being significantly greater than those for other two
methods. The 3D SR approach would improve the diagnostic
performance of WHCMRA for detection of stenosis.
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