Multienergy photon-counting K-edge imaging: potential for improved luminal depiction in vascular imaging.
Radiology
; 249(3): 1010-6, 2008 Dec.
Article
en En
| MEDLINE
| ID: mdl-18849505
ABSTRACT
The purpose of this study was to investigate whether spectral computed tomography (CT) has the potential to improve luminal depiction by differentiating among intravascular gadolinium-based contrast agent, calcified plaque, and stent material by using the characteristic k edge of gadolinium. A preclinical spectral CT scanner with a photon-counting detector and six energy threshold levels was used to scan a phantom vessel. A partially occluded stent was simulated by using a calcified plaque isoattenuated to a surrounding gadolinium chelate solution. The reconstructed images showed an effective isolation of the gadolinium with subsequent clear depiction of the perfused vessel lumen. The calcified plaque and the stent material are suppressed.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tomografía Computarizada por Rayos X
/
Angiografía Coronaria
Idioma:
En
Revista:
Radiology
Año:
2008
Tipo del documento:
Article
País de afiliación:
Alemania