Accelerated Computing in Magnetic Resonance Imaging: Real-Time Imaging Using Nonlinear Inverse Reconstruction

Table 6

Autotuning for reconstructing single-slice, dual-slice, and phase-contrast flow MRI acquisitions. for all datasets results in a grid size of .

Single-slice anatomic MRI
	Worst configuration			Best configuration
Frames	Threads	GPUs/thread	Fps	Threads	GPUs/thread	Fps
5	2	4	1.9	1	2	3.7
10	2	4	3.0	1	2	5.0
25	1	1	4.7	2	2	7.7
50	1	1	4.9	3	2	11.0
200	1	1	4.9	3	2	18.1
Dual-slice anatomic MRI
	Worst configuration			Best configuration
Frames	Threads	GPUs/thread	Fps	Threads	GPUs/thread	Fps
5	2	4	3.2	2	1	5.9
10	1	1	4.6	2	2	8.0
25	1	1	5.0	4	2	12.3
50	1	1	5.1	4	2	18.4
200	1	1	5.1	4	2	28.1
Phase-contrast flow MRI
	Worst configuration			Best configuration
Frames	Threads	GPUs/thread	Fps	Threads	GPUs/thread	Fps
5	2	4	1.6	2	1	2.6
10	1	1	1.8	2	2	3.6
25	1	1	1.9	4	2	5.8
50	1	1	1.9	4	2	7.5
200	1	1	1.9	4	2	10.7