TY - JOUR
T1 - Validation of a passive stereophotogrammetry system for imaging of the breast: a geometrical analysis
AU - Catherwood, Tess
AU - McCaughan, Eilis
AU - Greer, Elizabeth
AU - Spence, Roy
AU - McIntosh, Stuart
AU - Winder, John
PY - 2011/10
Y1 - 2011/10
N2 - The overall aim of this study was to assess the accuracy, reproducibility and stability of a high resolution passive stereophotogrammetry system to image a female mannequin torso, to validate measurements made on the textured virtual surface compared with those obtained using manual techniques and to develop an approach to make objective measurements of the female breast. 3D surface imaging was carried out on a textured female torso and measurements made in accordance with the system of mammometrics. Linear errors in measurements were less than 0.5 mm, system calibration produced errors of less than 1.0 mm over 94% over the surface and intra-rater reliability measured by ICC = 0.999. The mean difference between manual and digital curved surface distances was 1.36 mm with maximum and minimum differences of 3.15 mm and 0.02 mm, respectively. The stereophotogrammetry system has been demonstrated to perform accurately and reliably with specific reference to breast assessment.
AB - The overall aim of this study was to assess the accuracy, reproducibility and stability of a high resolution passive stereophotogrammetry system to image a female mannequin torso, to validate measurements made on the textured virtual surface compared with those obtained using manual techniques and to develop an approach to make objective measurements of the female breast. 3D surface imaging was carried out on a textured female torso and measurements made in accordance with the system of mammometrics. Linear errors in measurements were less than 0.5 mm, system calibration produced errors of less than 1.0 mm over 94% over the surface and intra-rater reliability measured by ICC = 0.999. The mean difference between manual and digital curved surface distances was 1.36 mm with maximum and minimum differences of 3.15 mm and 0.02 mm, respectively. The stereophotogrammetry system has been demonstrated to perform accurately and reliably with specific reference to breast assessment.
U2 - 10.1016/j.medengphy.2011.02.005
DO - 10.1016/j.medengphy.2011.02.005
M3 - Article
SN - 1873-4030
VL - 33
SP - 900
EP - 905
JO - Medical Engineering and Physics
JF - Medical Engineering and Physics
IS - 8
ER -