The pseudodelta sign in acute head trauma.
The "delta sign" is a triangular area of high density with a low-density center seen on contrast-enhanced computerized tomography (CT) scans in the location of the superior sagittal sinus. It indicates thrombosis of the sinus. The authors describe the "pseudodelta sign," which is similar but is seen on non-contrast-enhanced CT scans and which has a high correlation with hemorrhage secondary to acute head trauma.
Yeakley
J W
JW
Department of Radiology, University of Texas Health Science Center, Houston.
Mayer
J S
JS
Patchell
L L
LL
Lee
K F
KF
Miner
M E
ME
D000208:Acute Disease; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging; D006259:Craniocerebral Trauma / Q000000981:diagnostic imaging*; D006801:Humans; D012189:Retrospective Studies; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed