Mark Wright1, Bryson Dietz1, Jihyun Yun1,2, Eugene Yip2, B Gino Fallone1,2, and Keith Wachowicz1,2
1Oncology, University of Alberta, Edmonton, AB, Canada, 2Medical Physics, Cross Cancer Institute, Edmonton, AB, Canada
1Oncology, University of Alberta, Edmonton, AB, Canada, 2Medical Physics, Cross Cancer Institute, Edmonton, AB, Canada
A real-time acceleration method using Principal Component Analysis (PCA) was developed for use on hybrid MR-radiotherapy machines. Good temporal-robustness was achieved at high frame-rate and low latency (less than 50ms), without the need for any complex coil geometries.
Figure 2: Flow chart of the
acceleration method. All calculations are done in the k-space domain.
Figure 3: A time evolution
comparison of for two patients over 2.5 minutes using the spatial PCA method
(red) and our proposed time-domain PCA method (blue) using normalised mean
square error for an acceleration factor of 3.
