Table 1.

Component characteristics of simulated anatomy.

Component/organ	Shape	Diameter (semi-major/minor axis) (cm)	Volume (${\mathrm{cm}}^3$)	Relative activity concentration ($C_{\text{Organ}}$)
Breast	Hemiellipsoid	($10/6$)	754	1
Torso	Elliptical cylinder	($22.86/11.43$)	25447	1
Liver	Cylinder	9	1272	12
Heart	Cylinder	8	251	12
Small lesion	Sphere	1	0.52	6
Large lesion	Sphere	4	33.5	6