[3D-CT angiography with volume rendering technique in the intracerebral aneurysms].
OBJECTIVE
Many techniques of 3D reconstruction (MIP, SSD) permit a good evaluation of the circle of Willis in order to detect cerebral aneurysms. More recently, the advent in the clinical practice of a calculation algorithm (VRT) adapted to the workstations for images treatment seems to improve evaluation of the characteristics regarding these aneurysms.


METHODS
We report 4 cases with cerebral aneurysms studies with CT-angiography using the technique MIP and VRT.


RESULTS
The VRT, using the totality of image informations, allows a better understanding than MIP about the intracranial cerebral aneurysms including their constitution and 3D localization.


CONCLUSIONS
The VRT reconstruction permits to obtain quickly good quality and reproductive images, without relationship with threshold.
Sahel
M
M
Service de Neuroradiologie H Fischgold, Hôpital de La Salpêtrière, 47, boulevard de l'Hôpital, 75651 Paris Cedex 13.
Ourrad
E
E
Zouaoui
A
A
Marro
B
B
Sourour
N
N
Biondi
A
A
Casasco
A
A
Marsault
C
C
D000328:Adult; D000465:Algorithms; D000792:Angiography / Q000379:methods*; D001488:Basilar Artery / Q000000981:diagnostic imaging; D002941:Circle of Willis / Q000000981:diagnostic imaging; D005260:Female; D006261:Headache / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D002546:Ischemic Attack, Transient / Q000000981:diagnostic imaging; D008297:Male; D008581:Meningitis / Q000000981:diagnostic imaging; D008875:Middle Aged; D015840:Oculomotor Nerve Diseases / Q000000981:diagnostic imaging; D011856:Radiographic Image Enhancement / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014711:Vertebral Artery / Q000000981:diagnostic imaging