371868.fig.001a
(a) Original SDCT image with tube current time product 150 mAs  
371868.fig.001b
(b) Original LDCT image with tube current time product 30 mAs
371868.fig.001c
(c) Original SDCT image with tube current time product 150 mAs
371868.fig.001d
(d) Original LDCT image with tube current time product 60 mAs
371868.fig.001e
(e) LDCT image (b) processed by PMD with , and iteration number is 100
371868.fig.001f
(f) LDCT image (d) processed by PMD with , and iteration number is 100
371868.fig.001g
(g) LDCT image (b) processed by RPMD with , , and iteration number is 100
371868.fig.001h
(h) LDCT image (b) processed by FOPMD in [8] with , , and and iteration number is 100
371868.fig.001i
(i) LDCT image (b) processed by RFS-FOPMD with , , , and and iteration number is 100
371868.fig.001j
(j) LDCT image (d) processed by RPMD with , , and and iteration number is 100
371868.fig.001k
(k) LDCT image (d) processed by FOPMD in [8] with , , and and iteration number is 100
371868.fig.001l
(l) LDCT image (d) processed by RFS-FOPMD with , , , and and iteration number is 100
Figure 1: Original SDCT and LDCT images ((a)–(d)), LDCT images processed by PMD, RPMD, FOPMD, and RFS-FOPMD with fractional order and iteration number is set to 100.