Large scan field, high spatial resolution flat-panel detector based volumetric CT of the whole human skull base and for maxillofacial imaging.
Dentomaxillofac Radiol
; 36(6): 317-27, 2007 Sep.
Article
em En
| MEDLINE
| ID: mdl-17699701
ABSTRACT
OBJECTIVES:
To assess the feasibility of flat-panel detector based volumetric CT (fpVCT) scanning of the whole human skull base and maxillofacial region, which has thus far only been demonstrated on small, excised specimens. Flat-panel detectors offer more favourable imaging properties than image intensifiers. It is therefore likely that they will replace them in cone-beam CT scanners that are currently used to scan parts of the skull base and maxillofacial region. Furthermore, the resolution of current CT imaging limits diagnosis, surgical planning and intraoperative navigation within these regions. fpVCT might overcome these limitations because it offers higher resolution of high contrast structures than current CT.METHODS:
Three embalmed cadaver heads were scanned in two scanners an experimental fpVCT that offers a scan field large enough for a whole human head, and in a current multislice CT (MSCT). 28 structures were compared.RESULTS:
Both scanners produced bone images of diagnostic quality. Small high contrast structures such as parts of the ossicular chain and thin bony laminas were better delineated in fpVCT than in MSCT. fpVCT of maxillofacial region and skull base was rated superior to MSCT (P=0.002) as found in this limited, experimental study.CONCLUSIONS:
High spatial resolution fpVCT scanning of both regions in a whole human head is feasible and might be slightly superior to MSCT. fpVCT could improve diagnostic accuracy in selected cases, as well as surgical planning and intraoperative navigation accuracy.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Tomografia Computadorizada por Raios X
/
Tomógrafos Computadorizados
/
Base do Crânio
/
Ossos Faciais
Limite:
Aged
/
Humans
/
Middle aged
Idioma:
En
Revista:
Dentomaxillofac Radiol
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Alemanha