Accuracy Assessment of q-ball Imaging with Phantom Models
Cho K, Yeh C, Chao Y, Chen J, Lin C
DEPT. OF ELECTRICAL ENGINEERING, NATIONAL TAIWAN UNIVERSITY
Q-ball imaging can be used to estimate intravoxel complex fiber coherence by measuring ODF. However, criteria of QBI parameter selection have not been studied. In this study, we evaluated QBI accuracy in mapping complex fiber coherence by phantom models with different b-value, SNR and diffusion time. The results showed that QBI can map coherent and crossing fiber accurately with angular error of 4.670.36 and 1.075.13, respectively. This study implied that QBI with 92 encoding points, along with adequate diffusion time and SNR, could map complex fiber coherence accurately in clinical system.