Utility of Quantitative ^99mTc-MAA SPECT/CT for ⁹⁰yttrium-Labelled Microsphere Treatment Planning: Calculating Vascularized Hepatic Volume and Dosimetric Approach

Table 3

Mean error (±1 standard deviation) with SPECT and SPECT/CT volume measurements.

	SPECT alone			SPECT/CT
	All volumes	volumes ≥16 mL	volumes ≥473 mL	All volumes	volumes ≥16 mL	volumes ≥473 mL
Operator 1	20.4 ± 22.4%	12.8 ± 10.3%	6.2 ± 4.8%	8.5 ± 10.5%	5.6 ± 6.7%	2.2 ± 3.1%
Operator 2	210.8 ± 194.5%	169.3 ± 181.3%	7.2 ± 4.9%	9.4 ± 12.3%	5.2 ± 5.1%	1.5 ± 1.3%