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Table 2 Sensitivity, specificity, positive, and negative predictive data of the cutoff points according to the groups

From: Cardiac protective techniques in left breast radiotherapy: rapid selection criteria for routine clinical decision making

Limit value

BCS groupa

Mastectomy groupa

Sensitivity (%)

Specificity (%)

Positive predictive value (%)

Negative predictive value (%)

Sensitivity (%)

Specificity (%)

Positive predictive value (%)

Negative predictive value (%)

Left lung volume

67.9

75.0

73.1

70.0

80.0

70.8

36.4

94.4

Lung/Heart rate

80.0

70.0

36.4

94.4

  1. BCS: Breast-conserving surgery
  2. aCut off points:
  3. Left lung volume 1154 cc for the BCS and 1208 cc for the mastectomy group
  4. Lung/Heart volume ratio: 1.92 for the mastectomy group