Parallelized Seeded Region Growing Using CUDA

Table 3

Results of the computation time and the number of iterations for patient datasets.

(a)

Patient data	Computation time (s)^a
	CUDA	HLSL	Quad-core	Single-core
Lung	0.6 ± 0.1 (222.8 ± 22.2)	4.5 ± 1.3 (145.1 ± 52.6)	8.7 ± 2.8 (n/a)	19.3 ± 2.4 (n/a)
Colon	1.3 ± 0.4 (461.1 ± 189.3)	13.2 ± 4.0 (337.1 ± 98.0)	4.2 ± 1.8 (n/a)	7.4 ± 3.9 (n/a)

(b)

Patient data	value
	Overall	CUDA versus HLSL	CUDA versus quad-core CPUs	CUDA versus single-core CPUs	HLSL versus quad-core CPUs	HLSL versus single-core CPUs	Quad-core CPUs versus; single-core CPUs
Lung	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
Colon	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01

Note: ^adata are means ± SD of the computation time (mean ± SD of the number of iterations) for 10 CT scans.