Spiral CT Volumetry of Below-Knee Residua

Kirk E. Smith; Michael W. Vannier; Paul K. Commean

doi:10.1109/86.413196

Spiral CT Volumetry of Below-Knee Residua

Kirk E. Smith, Michael W. Vannier, Paul K. Commean

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Spiral CT volumetric imaging, processing, and analysis of lower extremity residua were developed and tested using cylindrical phantom test objects and a cadaver lower extremity. Spiral CT scan examination was performed to generate image volumes that were segmented to estimate volumes of interest. These volumes were compared to physical volume measurements obtained by hydrostatic weighing. Hydrostatic weighing and spiral CT volume determinations were compared to calculated volumes based on measured dimensions of two cylindrical phantoms. Threshold-based segmentation of below-knee residua scanned with spiral CT in air was shown accurate to within 3% compared to hydrostatic and analytically derived volumes of phantom test objects. Volume of interest segmentation methods of spiral CT image data had a standard error of 0.15% for a cadaver leg. The feasability and validity of spiral CT scanning and segmentation for volumetric studies of lower limb residua were demonstrated.

Original language	English
Pages (from-to)	235-241
Number of pages	7
Journal	IEEE Transactions on Rehabilitation Engineering
Volume	3
Issue number	3
DOIs	https://doi.org/10.1109/86.413196
State	Published - Sep 1995

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title = "Spiral CT Volumetry of Below-Knee Residua",

abstract = "Spiral CT volumetric imaging, processing, and analysis of lower extremity residua were developed and tested using cylindrical phantom test objects and a cadaver lower extremity. Spiral CT scan examination was performed to generate image volumes that were segmented to estimate volumes of interest. These volumes were compared to physical volume measurements obtained by hydrostatic weighing. Hydrostatic weighing and spiral CT volume determinations were compared to calculated volumes based on measured dimensions of two cylindrical phantoms. Threshold-based segmentation of below-knee residua scanned with spiral CT in air was shown accurate to within 3% compared to hydrostatic and analytically derived volumes of phantom test objects. Volume of interest segmentation methods of spiral CT image data had a standard error of 0.15% for a cadaver leg. The feasability and validity of spiral CT scanning and segmentation for volumetric studies of lower limb residua were demonstrated.",

author = "Smith, {Kirk E.} and Vannier, {Michael W.} and Commean, {Paul K.}",

note = "Funding Information: Manuscript received July 11, 1994; revised April 27, 1995. This work was supported in part by National Institutes of Health/National Institute of Child Health and Human Development National Center for Medical Rehabilitation Research R01 HD30169. The authors are with the Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 631 10 USA. IEEE Log Number 9412526.",

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AU - Smith, Kirk E.

AU - Vannier, Michael W.

AU - Commean, Paul K.

N1 - Funding Information: Manuscript received July 11, 1994; revised April 27, 1995. This work was supported in part by National Institutes of Health/National Institute of Child Health and Human Development National Center for Medical Rehabilitation Research R01 HD30169. The authors are with the Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 631 10 USA. IEEE Log Number 9412526.

PY - 1995/9

Y1 - 1995/9

N2 - Spiral CT volumetric imaging, processing, and analysis of lower extremity residua were developed and tested using cylindrical phantom test objects and a cadaver lower extremity. Spiral CT scan examination was performed to generate image volumes that were segmented to estimate volumes of interest. These volumes were compared to physical volume measurements obtained by hydrostatic weighing. Hydrostatic weighing and spiral CT volume determinations were compared to calculated volumes based on measured dimensions of two cylindrical phantoms. Threshold-based segmentation of below-knee residua scanned with spiral CT in air was shown accurate to within 3% compared to hydrostatic and analytically derived volumes of phantom test objects. Volume of interest segmentation methods of spiral CT image data had a standard error of 0.15% for a cadaver leg. The feasability and validity of spiral CT scanning and segmentation for volumetric studies of lower limb residua were demonstrated.

AB - Spiral CT volumetric imaging, processing, and analysis of lower extremity residua were developed and tested using cylindrical phantom test objects and a cadaver lower extremity. Spiral CT scan examination was performed to generate image volumes that were segmented to estimate volumes of interest. These volumes were compared to physical volume measurements obtained by hydrostatic weighing. Hydrostatic weighing and spiral CT volume determinations were compared to calculated volumes based on measured dimensions of two cylindrical phantoms. Threshold-based segmentation of below-knee residua scanned with spiral CT in air was shown accurate to within 3% compared to hydrostatic and analytically derived volumes of phantom test objects. Volume of interest segmentation methods of spiral CT image data had a standard error of 0.15% for a cadaver leg. The feasability and validity of spiral CT scanning and segmentation for volumetric studies of lower limb residua were demonstrated.

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Spiral CT Volumetry of Below-Knee Residua

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