EJNMMI Physics

Table 6 Residence time (standardized cumulated activity), in hours, used for absorbed dose estimation

From: Internal dosimetry in F-18 FDG PET examinations based on long-time-measured organ activities using total-body PET/CT: does it make any difference from a short-time measurement?

Data source
Organ	This work	Deloar et al. [4]	Hays and Segall [5]	Kaushik et al. [8]	Mejia et al. [3]	Niven at al. [6]	ICRP 106 [9]
Brain	0.391±0.066	0.230±0.040	0.245±0.090	0.193±0.040	0.178±0.041	0.243±0.029	0.21
Heart	0.041±0.022**	0.025±0.001**	0.133±0.065		0.085±0.020		0.11
Liver	0.117±0.025	0.084±0.016	0.161±0.057	0.108±0.038	0.112±0.029		0.13
Lungs	0.058±0.030	0.055±0.008	0.084±0.028		0.023±0.003		0.079
Kidneys	0.033±0.009	0.036±0.019			0.034±0.009
Bladder	0.124±0.032	0.151±0.039	*				0.26
Remainder	1.623±0.139	1.975±0.097	1.790±0.139				1.7

*0.101 ± 0.041, 0.119 ± 0.047, and 0.191 ± 0.075 for excretion at 120, 144, and 288 min, and 0.040 ± 0.017 for voiding at 30, 60, and 120, then every 120 min
**Only left ventricle
Data are mean ± standard deviation for each study
Residual time for urine that decay outside the body: 0.252 ± 0.053

Back to article page