TIPS placement in swine, guided by electromagnetic real-time needle tip localization displayed on previously acquired 3-D CT.
Cardiovasc Intervent Radiol
; 22(5): 411-4, 1999.
Article
en En
| MEDLINE
| ID: mdl-10501894
PURPOSE: To determine the feasibility of guiding a transjugular intrahepatic portosystemic shunt (TIPS) procedure with an electromagnetic real-time needle tip position sensor coupled to previously acquired 3-dimensional (3-D) computed tomography (CT) images. METHODS: An electromagnetic position sensor was placed at the tip of a Colapinto needle. The real-time position and orientation of the needle tip was then displayed on previously acquired 3-D CT images which were registered with the five swine. Portal vein puncture was then attempted in all animals. RESULTS: The computer calculated accuracy of the position sensor was on average 3 mm. Four of five portal vein punctures were successful. In the successes, only one or two attempts were necessary and success was achieved in minutes. CONCLUSION: A real-time position sensor attached to the tip of a Colapinto needle and coupled to previously acquired 3-D CT images may potentially aid in entering the portal vein during the TIPS procedure.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Procesamiento de Imagen Asistido por Computador
/
Tomografía Computarizada por Rayos X
/
Radiología Intervencionista
/
Derivación Portosistémica Intrahepática Transyugular
Límite:
Animals
Idioma:
En
Revista:
Cardiovasc Intervent Radiol
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos