Analysis of three-dimensional computerized representations of articular cartilage lesions.
Invest Radiol
; 31(9): 577-85, 1996 Sep.
Article
em En
| MEDLINE
| ID: mdl-8877495
ABSTRACT
RATIONALE AND OBJECTIVES:
The authors assess the accuracy of three-dimensional (3D) computer representations based on magnetic resonance images of articular cartilage lesions, using actual cartilage lesions as reference standards.METHODS:
Grade 2 and grade 3 articular lesions were created on articular surfaces of five porcine knee joints. The knees were then imaged using 3D fat-suppressed SPGR acquisition at four different slice thicknesses. Magnetic resonance imaging data sets were transferred to a computer workstation for image processing and 3D reconstruction. Lesion dimensions (length, width, and depth) based on the 3D reconstructed image were compared with the dimensions measured using actual lesions.RESULTS:
The average percent error of lesion length, width, and depth based on the 3D images ranged from approximately 8% to 12% when using the thinnest magnetic resonance slice thickness (0.7 mm).CONCLUSIONS:
Three-dimensional reconstructed images derived from thin-slice magnetic resonance imaging can provide reasonable representations of true articular cartilage lesion dimensions.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Processamento de Imagem Assistida por Computador
/
Imageamento por Ressonância Magnética
/
Cartilagem Articular
Limite:
Animals
Idioma:
En
Revista:
Invest Radiol
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Estados Unidos