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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: AJNR Am J Neuroradiol. 2019 Oct 24;40(11):1855–1863. doi: 10.3174/ajnr.A6251

Table 2.

Reference documentation and conspicuity of proven lesions in positive CT exams with imaging findings corresponding to cause of acute neurologic deficit (n=42).

Target Diagnosis Number of Imaging Findings with Target Diagnosis # with reference criterion (non-exclusive list) Ranking of conspicuity scoresa
Mean (SD)
Infarct 29

  • Clinical confirmation of corresponding deficit = 29

  • Progression/confirmation on another imaging study= 23

  • Confirmation at surgery= 0

 2.10 (0.76)
Mass 25

  • Clinical confirmation of corresponding deficit = 22

  • Progression/confirmation on another imaging study= 21

  • Confirmation at surgery= 2

 2.80 (0.70)
Extra-axial hemorrhage 10

  • Clinical confirmation of corresponding deficit = 10

  • Progression/confirmation on another imaging study= 3

  • Confirmation at surgery= 0

 2.60 (0.66)
Intra-axial hemorrhage 6

  • Clinical confirmation of corresponding deficit = 6

  • Progression/confirmation on another imaging study= 2

  • Confirmation at surgery= 0

 2.67 (0.47)
a

Please see Methods; in brief, conspicuity scores: (1) minimally evident, (2) subtle, (3) distinct focal abnormality, (4) obvious.