3D versus 2D ultrasound: accuracy of volume measurement in human cadaver kidneys.
Invest Radiol
; 37(9): 489-95, 2002 Sep.
Article
em En
| MEDLINE
| ID: mdl-12218444
ABSTRACT
RATIONALE AND OBJECTIVES:
Comparison of the accuracy of 3D and 2D ultrasound in assessing the volume of human cadaver kidneys. MATERIALS ANDMETHODS:
Before autopsy the volume of 22 kidneys was assessed from a 3D data set after manually tracing organ contours (3D volumetry) and by applying a 3D ellipsoid formula both on a 3D data set and 2D images. Measurements by water-displacement served as the gold standard.RESULTS:
3D volumetry showed a mean absolute deviation of 31 mL (18.5%) compared with the mean gold standard measurement (168 mL), yielding a concordance correlation (Lin's rho(c) ) of 0.71. Calculation based on the ellipsoid formula revealed a mean absolute deviation of 37 mL (22.0%) when applied on the 3D data set (rho(c) = 0.65) and of 42 mL (25.0%) when applied on 2D images (rho(c) = 0.61).CONCLUSIONS:
3D volumetry showed a satisfactory concordance correlation and is superior to volume calculation based on the ellipsoid formula either applied to a 3D data set or to conventional 2D images in assessing the volume of human cadaver kidneys.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ultrassonografia
/
Rim
Tipo de estudo:
Diagnostic_studies
Limite:
Aged
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article