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Table 4 Summary of false-positive and false-negative aneurysms on 4D-TRAK and 3D-TOF-MRA

From: A comparison of 4D time-resolved MRA with keyhole and 3D time-of-flight MRA at 3.0 T for the evaluation of cerebral aneurysms

Case No./Gender/Age

4D-TRAK

3D-TOF-MRA

Location

Size (mm)

Causes

31/F/59

FP

TN

L C7 segment

≥ 3

Excessively tortuosity at the origin of the Pcom

33/F/58

FP

TN

L C7 segment

≥ 3

30/M/40

FN

FN

L P4 segment

< 3

Distal location and small size

16/F/54

FN

TP

L C7 segment

< 3

“vascular edge” artifact and spatial resolution compromise of 4D-TRAK technique

37/F/45

FN

TP

L Acom

< 3

22/M/64

FN

TP

L M1 segment

< 3

30/M/45

FN

TP

L P2 segment

< 3

21/M/60

FN

TP

R C4 segment

< 3

3/M/35

FN

TP

L C5 segment

< 3

27/M/45

FN

TP

R C5 segment

< 3

30/M/45

FN

TP

R M1 segment

< 3

41/M/58

TN

FP

L C4 segment

≥ 3

Acute turn of the siphon at C4 segment

  1. Note: M: male; F: female; L: left; R: right; Acom: anterior communicating artery; Pcom: posterior communicating artery; TP: true-positive; TN: true-negative; FP: false-positive; FN: false-negative.