| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Outline of Final Research Achievements |
Numerical simulation of magnetic resonance (MR) diffusion-weighted imaging (DWI) experiments is useful for diagnosis and MR-guided therapy. However, DWI has not been simulated because huge computing power is required. We developed a DWI simulator with three acceleration techniques and reduced the simulation time to one hour and was 140,000 times shorter than without these for a head-sized-model. We also applied compressed sensing and reduced the simulation time by 70%. These reduction allowed the simulator to have greater functionality.
Magnetic field perturbations induced by devices with low magnetic susceptibility produce artifacts in MR images. These artifacts cause serious problems for therapeutic procedures. The effects of the devices need to be evaluated. However, the spatial resolution for calculations is insufficient. We developed a computer code based on the superposition principle and successfully applied the method to the needles penetrated into realistic head model.
|
