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European Radiology Experimental

Table 2 Ex vivo Ho recovery by single-photon emission computed tomography (SPECT) and computed tomography (CT)

From: Feasibility of CT quantification of intratumoural 166Ho-microspheres

 

Injected Ho

SPECT recovery

CT recovery

MBq

mg

MBq

%

mg

%

Tissue 1

81.1

18.0

75.9

93.6

16.1

89.8

Tissue 2

73.6

16.3

67.6

91.9

13.2

81.0

Tissue 3

40.3

8.9

36.5

90.6

7.3

81.7

Tissue 4

24.4

5.4

23.1

94.7

4.4

81.5

Tissue 5

15.4

3.4

15.6

101.3

2.5

73.8

  1. Two 5-mL Eppendorf tubes filled with activity were used for SPECT calibration. Five samples of chicken muscle tissue were injected with radioactive microspheres ranging from 15.4 to 81.1 MBq with the corresponding amount of mg Ho. Based on the dose calibrator measurements, SPECT, and CT imaging recovered 90.6–101.3% and 73.8–89.9%, respectively
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