Table 1: Comparison of two sampling methods.

Objects and sizesHead
512 × 512 × 295
Heart
512 × 512 × 41

Spacing
(mm × mm × mm)
0.486 × 0.486 × 0.7000.318 × 0.318 × 2.000
Sampling distance (mm)0.30.3
Time by the traditional (s)58.2747.192
Time by the proposed (s)17.1582.043
Acceleration rate3.6063.52