Cancer Imaging

Table 3 Nodule detection analysis at different dose levels between 70 kV and 100 kV

From: Effects of tube voltage, radiation dose and adaptive statistical iterative reconstruction strength level on the detection and characterization of pulmonary nodules in ultra-low-dose chest CT

	Dose 1		Dose 2		Dose 3
	70 kV	100 kV	70 kV	100 kV	70 kV	100 kV	Low-Dose CT
True positive	141	140	176	170	181	181	192
True negative	99	100	64	70	59	59	48
Sensitivity	58.76%	58.33%	73.33%	70.83%	75.42%	75.42%	80.00%
p	> 0.05		> 0.05		> 0.05

PS: The physical nodules were used as the reference standards. The total number of possible nodules was 240 under each scan protocol

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