Correction of probe pressure artifacts in freehand 3D ultrasound.
Med Image Anal
; 6(3): 199-214, 2002 Sep.
Article
em En
| MEDLINE
| ID: mdl-12270227
ABSTRACT
We present an algorithm which combines non-rigid image-based registration and conventional position sensing to correct probe-pressure-induced registration errors in freehand three-dimensional (3D) ultrasound volumes. The local accuracy of image-based registration enables the accurate freehand acquisition of high resolution (>15 MHz) 3D ultrasound data, opening the way for 3D musculoskeletal examinations. External position sensor readings guarantee the large-scale positional accuracy of the data. Pressure correction is shown to dramatically increase the perceived quality of extended-field-of-view data sets and reslices through volumetric data sets, while quantitative comparisons of multiple in vivo volumes demonstrate the superior precision of the corrected data.
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Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Aumento da Imagem
/
Ultrassonografia
/
Artefatos
/
Imageamento Tridimensional
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
Idioma:
En
Revista:
Med Image Anal
Assunto da revista:
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Reino Unido