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. Author manuscript; available in PMC: 2016 Jun 7.
Published in final edited form as: Phys Med Biol. 2015 May 14;60(11):4295–4312. doi: 10.1088/0031-9155/60/11/4295

Table 1.

Phantoms used in the experimental studies.

Homogeneous Soft Phantom Homogeneous Hard Phantom Two-layered Phantom 1 Two-layered Phantom 2
Gelatin Concentration Top Layer Bottom Layer Top Layer Bottom Layer
6% 18% 6% 18% 6% 18%
Young’s modulus 8 kPa 48 kPa 8 kPa 48 kPa 8 kPa 48 kPa
Thickness 16 mm 16 mm 5 mm 11 mm 2 mm 14 mm