BACKGROUND AND PURPOSE: For @entity1 with ICH, knowing the rate of CT contrast extravasation may provide insight into the pathophysiology of @entity1410 expansion. This study assessed whether the PCT-derived PS can measure different rates of CT contrast extravasation for admission CTA spot signs, PCCT, @entity4269 , and regions without extravasation in @entity1 with ICH. MATERIALS AND METHODS: CT was performed at admission and at 24 hours for 16 @entity1 with ICH with/without contrast extravasation seen on CTA and PCCT. PCT-PS was measured at admission. The Wilcoxon rank sum test with a Bonferroni correction was used to compare PS values from the following regions of interest: 1) spot sign lesions only (9 foci), 2) @entity75 only (9 foci), 3) @entity1410 excluding extravasation, 4) regions contralateral to extravasation, 5) @entity1410 in @entity1 without extravasation, and 6) an area contralateral to that in 5. Additionally, @entity1410 expansion was determined at 24 hours defined by @entity19382 . RESULTS: PS was 6.5    1.60 mL    @entity1009 )   (100 g)(-1), 0.95    0.39 mL    @entity1009 )   (100 g)(-1), 0.12    0.39 mL    @entity1009 )   (100 g)(-1), 0.26    0.09 mL    @entity1009 )   (100 g)(-1), 0.38    0.26 mL    @entity1009 )   (100 g)(-1), and 0.09    0.32 mL    @entity1009 )   (100 g)(-1) for the following: 1) spot sign lesions only (9 foci), 2) @entity75 only (9 foci), 3) @entity1410 excluding extravasation, 4) regions contralateral to extravasation, 5) @entity1410 in @entity1 without extravasation, and 6) an area contralateral to that in 5. PS values from spot sign lesions and @entity75 were significantly different from each other and all other regions, respectively (P < .05). @entity1410 volume increased from 34.1    41.0 mL to 40.2    46.1 mL in extravasation-positive @entity1 and decreased from 19.8    31.8 mL to 17.4    27.3 mL in extravasation-negative @entity1 . CONCLUSIONS: The PCT-PS parameter measures a higher rate of contrast extravasation for CTA spot sign lesions compared with @entity75 and @entity1410 . Early extravasation was associated with @entity1410 expansion.

Early rate of contrast extravasation in XXXX with intracerebral hemorrhage.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity19382 :: ('6559', 'Gene') :: ['NCCT'] @entity75 :: ('MESH:D001927', 'Disease') :: ['PCL lesions'] @entity1009 :: ('966', 'Gene') :: ['min(-1'] @entity4269 :: ('MESH:D008209', 'Disease') :: ['PCL'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['Hematoma', 'hematoma']
@entity1 :: (9606,Species) :: ['patients']
