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. Author manuscript; available in PMC: 2024 Jul 8.
Published in final edited form as: Magn Reson Imaging. 2023 Jan 11;99:48–57. doi: 10.1016/j.mri.2023.01.006

Table 2.

Definition of factors to determine specificity and sensitivity for individual lesions.

Factor Definition
True Positive (TP) MRI and histology lesion in same location
and MRI lesion vol > 0.1 cc
and histology lesion vol > 0.1 cc
and MRI lesion vol ≥ 0.75 • histology lesion vol − 1 cc
False Positive (FP) MRI lesion present but no histology lesion present
or MRI lesion vol > 1.33 • histology lesion vol + 1 cc
True Negative (TN) MRI lesion vol ≤ 1.33 • histology lesion vol + 1 cc
False Negative (FN) Histology lesion present but no MRI lesion present
and histology lesion vol > 0.1 cc
or MRI lesion vol < 0.75 • histology lesion vol − 1 cc
Not Applicable (NA) MRI lesion vol < 0.1 cc and histology lesion vol < 0.1 cc