Brain imaging with a flat detector C-arm : Technique and clinical interest of XperCT.
BACKGROUND
We present the first clinical results from brain tissue imaging with a novel functionality in the angiography room, the XperCT.


METHODS
XperCT is a flat detector C-arm volume acquisition functionality integrated with the angiography equipment. We assessed brain images from 42 patients examined with computed tomography (CT) and XperCT.


RESULTS
In all patients, XperCT had significantly more beam hardening and reconstruction artifacts than CT, in particular in the posterior fossa. Contrast resolution was better on CT images. Hemorrhage, edema, and ventricular size could be assessed with XperCT in all patients, but CT was superior also in this aspect. In four of the last 12 cases, after the latest software upgrade, it was possible to differentiate between supra-tentorial grey and white substance on XperCT images.


CONCLUSIONS
CT was superior to XperCT regarding brain soft tissue imaging. However, XperCT could in some cases discriminate between grey and white substance. XperCT is a useful new functionality in interventional neuroradiology. In the clinical setting, it improves patient safety by allowing almost instant access to CT-like brain imaging in the angiography room. It can be life saving in situations where complications during an interventional procedure prompt for immediate action.
Department of Neuroradiology, Karolinska Hospital, 171 76, Stockholm, Sweden. michael.soderman@karolinska.se
M
M
Söderman
D
D
Babic
S
S
Holmin
T
T
Andersson
D000465:Algorithms; D016477:Artifacts; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002138:Calibration; D002533:Cerebral Angiography / Q000295:instrumentation; D006801:Humans; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D015641:Radiography, Interventional / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*