Validation of Stereophotogrammetry of the Human Torso

Breast Cancer: Basic and Clinical Research

Original Research

June Weston¹  Michelle C. Fingeret¹  Mia K. Markey²  Manas Kawale³  Juhun Lee⁴  Fatima A. Merchant⁵  Elisabeth K. Beahm⁶  Dianne Ladewig⁶  Gregory P. Reece⁶  Melissa A. Crosby⁶ 

[1] Department of Behavioral Science, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA.;Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA.;Department of Imaging Physics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA.;Department of Computer Science, University of Houston, Houston, Texas, USA.;Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas, USA.;Department of Engineering Technology, University of Houston, Houston, Texas, USA.;Department of Plastic Surgery, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA.;

关键词: three-dimensional;    anthropometry;    validation;    breast;    photogrammetry;    stereophotogrammetry;    surgical planning;   

DOI  :  10.4137/BCBCR.S6352

来源: Sage Journals

【 摘 要 】

The objective of this study was to determine if measurements of breast morphology computed from three-dimensional (3D) stereophotogrammetry are equivalent to traditional anthropometric measurements obtained directly on a subject using a tape measure. 3D torso images of 23 women ranged in age from 36 to 63 who underwent or were scheduled for breast reconstruction surgery were obtained using a 3dMD torso system (3Q Technologies Inc., Atlanta, GA). Two different types (contoured and line-of-sight distances) of a total of nine distances were computed from 3D images of each participant. Each participant was photographed twice, first without fiducial points marked (referred to as unmarked image) and second with fiducial points marked prior to imaging (referred to as marked image). Stereophotogrammetry was compared to traditional direct anthropometry, in which measurements were taken with a tape measure on participants. Three statistical analyses were used to evaluate the agreement between stereophotogrammetry and direct anthropometry. Seven out of nine distances showed excellent agreement between stereophotogrammetry and direct anthropometry (both marked and unmarked images). In addition, stereophotogrammetry from the unmarked image was equivalent to that of the marked image (both line-of-sight and contoured distances). A lower level of agreement was observed for some measures because of difficulty in localizing more vaguely defined fiducial points, such as lowest visible point of breast mound, and inability of the imaging system in capturing areas obscured by the breast, such as the inframammary fold. Stereophotogrammetry from 3D images obtained from the 3dMD torso system is effective for quantifying breast morphology. Tools for surgical planning and evaluation based on stereophotogrammetry have the potential to improve breast surgery outcomes.

【 授权许可】

CC BY-NC   
© 2011 SAGE Publications.

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