Table 4 Diagnostic performance of pre-adjusted and post-adjusted Breast Imaging Reporting and Data System (category 4a downgraded to category 3).

From: Comparison of strain and shear wave elastography for qualitative and quantitative assessment of breast masses in the same population

Reviewer	Sensitivity, % (n)		Specificity, % (n)
Reviewer	Pre-adjusted	Post-adjusted	Pre-adjusted	Post-adjusted
Shear wave elastography, colour score, cut-off <3
1	93.2 (41/44) [85.7–100]	86.4 (38/44) [76.2–96.5]	14.1 (9/64) [5.5–22.6]	43.8 (28/64) [31.6–55.9]
2	97.7 (43/44) [93.3–100]	95.5 (42/44) [89.3–100]	12.5 (8/64) [4.4–20.6]	21.9 (14/64) [11.7–32.0]
3	95.5 (42/44) [89.3–100]	90.9 (40/44) [82.4–99.4]	12.5 (8/64) [4.4–20.6]	34.4 (22/64) [22.7–46.0]
4	97.7 (43/44) [93.3–100]	93.2 (41/44) [85.7–100]	7.8 (5/64) [1.2–14.4]	39.1 (25/64) [27.1–51.0]
Mean \(\pm \) SD	96.0225 ± 2.17858	91.4750± 3.88116	11.7175 ± 2.70681	34.8925 ± 9.40122
Shear wave elastography, colour score, cut-off <2
1	93.2 (41/44) [85.7–100]	86.4 (38/44) [76.2–96.5]	14.1 (9/64) [5.5–22.6]	62.5 (40/64) [50.6–74.4]
2	97.7 (43/44) [93.3–100]	97.7 (43/44) [93.3–100]	12.5 (8/64) [4.4–20.6]	40.6 (26/64) [28.6–52.7]
3	95.5 (42/44) [89.3–100]	79.5 (35/44) [67.6–91.5]	12.5 (8/64) [4.4–20.6]	54.7 (35/64) [42.5–66.9]
4	97.7 (43/44) [93.3–100]	90.9 (40/44) [82.4–99.4]	7.8 (5/64) [1.2–14.4]	43.8 (28/64) [31.6–55.9]
Mean ± SD	96.0225 ± 2.17858	88.6375 ± 7.65087	11.7175 ± 2.70681	50.3925 ± 10.07454
Strain ratio, cut-off ≤2.93
1	93.2 (41/44) [85.7–100]	81.8 (36/44) [70.4–93.2]	14.1 (9/64) [5.5–22.6]	70.3 (45/64) [59.1–81.5]
2	97.7 (43/44) [93.3–100]	95.5 (42/44) [89.3–100]	12.5 (8/64) [4.4–20.6]	48.4 (31/64) [36.2–60.7]
3	95.5 (42/44) [89.3–100]	79.5 (35/44) [67.6–91.5]	12.5 (8/64) [4.4–20.6]	60.9 (39/64) [49.0–72.9]
4	97.7 (43/44) [93.3–100]	88.6 (39/44) [79.3–98.0]	7.8 (5/64) [1.2–14.4]	46.9 (30/64) [34.6–59.1]
Mean ± SD	96.0225 ± 2.17858	86.3650 ± 7.18364	11.7175 ± 2.70681	56.6425 ± 11.07334
Elasticity ratio, cut-off ≤4
1	93.2 (41/44) [85.7–100]	77.3 (34/44) [64.9–89.7]	14.1 (9/64) [5.5–22.6]	78.1 (50/64) [68.0–88.3]
2	97.7 (43/44) [93.3–100]	95.5 (42/44) [89.3–100]	12.5 (8/64) [4.4–20.6]	56.3 (36/64) [44.1–68.4]
3	95.5 (42/44) [89.3–100]	77.3 (34/44) [64.9–89.7]	12.5 (8/64) [4.4–20.6]	65.6 (42/64) [54.0–77.3]
4	97.7 (43/44) [93.3–100]	84.1 (37/44) [73.3–94.9]	7.8 (5/64) [1.2–14.4]	46.9 (30/64) [34.6–59.1]
Mean ± SD	96.0225 ± 2.17858	83.5200 ± 8.57855	11.7175 ± 2.70681	61.7225 ± 13.35069
Shear wave elastography, maximum kPa, cut-off ≤36.1
1	93.2 (41/44) [85.7–100]	86.4 (38/44) [76.2–96.5]	14.1 (9/64) [5.5–22.6]	59.4 (38/64) [47.3–71.4]
2	97.7 (43/44) [93.3–100]	95.5 (42/44) [89.3–100]	12.5 (8/64) [4.4–20.6]	45.3 (29/64) [33.1–57.5]
3	95.5 (42/44) [89.3–100]	86.4 (38/44) [76.2–96.5]	12.5 (8/64) [4.4–20.6]	48.4 (31/64) [36.2–60.7]
4	97.7 (43/44) [93.3–100]	90.9 (40/44) [82.4–99.4]	7.8 (5/64) [1.2–14.4]	40.6 (26/64) [28.6–52.7]
Mean ± SD	96.0225 ± 2.17858	89.7700 ± 4.35194	11.7175 ± 2.70681	48.4400 ± 7.96820

SD, standard deviation; Except for Mean ± SD values, data are percentage (number of lesions/total) [95% confidence interval CI].

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Table 4 Diagnostic performance of pre-adjusted and post-adjusted Breast Imaging Reporting and Data System (category 4a downgraded to category 3).

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