Article Figures & Data
Figures
- Fig 1.
A, NCCT demonstrates an ICH, with IVH extension, without evidence of calcification within. B, No spot signs are detected on CTA. C, CTP identifies a 2-mm spot sign (arrow) with maximum attenuation appearing 40 seconds after contrast bolus. D, PCT demonstrates no definite contrast extravasation. The patient clinically deteriorated rapidly and died before 24-hour CT.
Tables
Spot sign characteristics
CTA Spot Positive (n = 8) CTP Spot Positive (n = 14) PCT Spot Positive (n = 9) P Valuea Spot No. 2 (1–4) 3 (1–6) 2 (1–2) .178 Maximum attenuation (HU) 252 (195–285) 219 (155–308) 140 (130–46) .011 Maximum axial dimension (mm) 4.6 (2.5–6.6) 9.1 (4.7–20.1) 19.0 (11.0–21.3) .055 Spot sign score 3 (2–3) 3.5 (1–4) 2 (2–3) .125 Time from contrast injection to maximum attenuation (sec) 24 (22–26) 50 (34–63) 339 (308–370) <.001 ↵a Overall difference among groups determined by Kruskal-Wallis test.
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