Skip to main content

Table 2 Paired t-test results comparing tissue parameters for the 36 suspicious breast lesions ('tumor') versus normal breast parenchyma within the ipsilateral breast ('reference')

From: A prospective pilot clinical trial evaluating the utility of a dynamic near-infrared imaging device for characterizing suspicious breast lesions

Tissue parameter Tissue type Mean ± standard deviation P value
Averaged [StO2] – baseline (%) Tumor/reference 88.7 ± 8.9/92.8 ± 5.7 <0.001
Averaged [Hbt] – baseline (μM) Tumor/reference 11.0 ± 6.0/9.0 ± 5.0 <0.001
Relative [StO2] contrast – baseline (%) Tumor/reference 3.6 ± 3.7/2.3 ± 1.1 0.03
Relative [Hbt] contrast – baseline (%) Tumor/reference 15.3 ± 8.8/12.8 ± 7.0 0.04
Averaged [StO2] – compression peak (%) Tumor/reference 87.7 ± 10.0/91.7 ± 7.1 <0.001
Averaged [Hbt] – compression peak (μM) Tumor/reference 10.0 ± 6.0/8.0 ± 4.0 <0.001
Relative [StO2] contrast – compression peak (%) Tumor/reference 4.0 ± 3.7/2.8 ± 1.7 0.01
Relative [Hbt] contrast – compression peak (%) Tumor/reference 15.5 ± 9.8/13.9 ± 10.0 0.2
Variation in differential [StO2] (%) Tumor/reference -0.5 ± 1.7/-0.4 ± 0.9 0.96
Variation in differential [Hbt] (%) Tumor/reference -0.2 ± 4.6/-1.2 ± 4.6 0.23
  1. [Hbt], total hemoglobin concentration; [StO2], tissue blood oxygen saturation.
  2. Significant P values are italicized.