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Table 6 Error analysis: reasons for false positive and false negative diagnoses

From: A novel ultrasound scanning approach for evaluating femoral cartilage defects of the knee: comparison with routine magnetic resonance imaging

Surface False-negative finding# False-positive finding#
Particular sites Partial volume effect Small or superficial lesion Thin cartilage Partial volume effect
TS 0/0 3/3 4/3 0/0 2/3
MC 9/7 5/4 6/5 1/1 2/3
LC 11/9 4/3 0/0 0/0 1/1
Total 20/16 12/10 10/8 1/1 5/7
  1. TS trochlear surface, MC medial condyles, LC lateral condyles
  2. #Data are the surface numbers for radiologist 1/radiologist 2