Pseudoaneurysm of the abdominal aorta: evaluation with virtual angioscopy of spiral-CT data sets.
We describe a case of graft-related pseudoaneurysm of the abdominal aorta evaluated with spiral CT and DSA. Spiral CT data sets were processed to obtain surface-rendered internal views (virtual angioscopy, VA) of the graft and the pseudoaneurysm, and to demonstrate from inside the lumen the site of dehiscence. A jet flow phenomenon inside the pseudoaneurysm was observed at DSA. Spiral-CT axial images, multiplanar volume reconstructions with maximum intensity projections, and shaded surface display showed the site of rupture. The VA findings were: (a) from inside the graft lumen, the evidence of a communication canal between the graft and the pseudoaneurysm; and (b) from inside the pseudoaneurysm, the presence of a jet flow. The VA findings showed good correlation with those obtained with the other imaging techniques.
Neri
E
E
Diagnostic and Interventional Radiology, Department of Oncology, University of Pisa, Via Roma, 67, I-I56100 Pisa, Italy.
Caramella
D
D
Cioni
R
R
Trincavelli
F
F
Vignali
C
C
Bartolozzi
C
C
D017541:Aneurysm, False / Q000000981:diagnostic imaging* / Q000209:etiology; D015901:Angiography, Digital Subtraction; D017546:Angioscopy; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging* / Q000601:surgery; D019917:Blood Vessel Prosthesis Implantation; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D013529:Surgical Wound Dehiscence / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014584:User-Computer Interface