Posture and re-positioning considerations of a complete torso topographic imaging system for assessing scoliosis

被引:1
作者
Ajemba, Peter O. [1 ]
Durdle, Nelson G. [1 ]
Hill, Doug L. [2 ]
Raso, V. James [2 ]
机构
[1] Univ Alberta, Dept ECE, Edmonton, AB T6G 2V4, Canada
[2] Glenrose Rehabil Hosp, Dept Rehab Tech, Edmonton, AB T6G 0B7, Canada
来源
THREE-DIMENSIONAL IMAGE CAPTURE AND APPLICATIONS VII | 2006年 / 6056卷
关键词
body sway; posture; range scanning; scoliosis; torso imaging;
D O I
10.1117/12.643183
中图分类号
TB8 [摄影技术];
学科分类号
0804 [仪器科学与技术];
摘要
The influence of posture and re-positioning (sway and breathing) on the accuracy of a torso imaging system for assessing scoliosis was evaluated. The system comprised of a rotating positioning platform and one or two laser digitizers. It required four partial-scans taken at 90 degrees intervals over 10 seconds to generate two complete torso scans. Its accuracy was previously determined to be 1.1 +/- 0.9mm. Ten evenly spaced cross-sections obtained from forty scans of five volunteers in four postures (free-standing, holding side supports, holding front supports and with their hands on their shoulders) were used to assess the variability due to posture. Twenty cross-sections from twenty scans of two volunteers holding side supports were used to assess the variability due to positioning. The variability due to posture was less than 4mm at each cross-section for all volunteers. Variability due to sway ranged from 0-3.5mm while that due to breathing ranged from 0-3mm for both volunteers. Holding side supports was the best posture. Taking the four shots within 10 seconds was optimal. As major torso features that are indicative of scoliosis are larger than 4mm in size, the system could be used in obtaining complete torso images used in assessing and managing scoliosis.
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页数:8
相关论文
共 11 条
[1]
AJEMBA PO, 2004, 2004 S INT RES SOC S
[2]
AJEMBA PO, 2004, P 2004 IEEE CAN C EL
[3]
AJEMBA PO, 2005, P 2005 IEEE INSTR ME
[4]
BEER FPE, MOMENTS AREAS MECH M, P690
[5]
Cobb J, 1948, Instructional Course Lectures, V5, P261
[6]
Spinal deformity - Adolescent idiopathic scoliosis - Nonoperative treatment [J].
Dickson, RA .
SPINE, 1999, 24 (24) :2601-2606
[7]
MORELAND MS, 1981, MED INSTRUM, V15, P129
[8]
Trunk distortion in adolescent idiopathic scoliosis [J].
Raso, VJ ;
Lou, E ;
Hill, DL ;
Mahood, JK ;
Moreau, MJ ;
Durdle, NG .
JOURNAL OF PEDIATRIC ORTHOPAEDICS, 1998, 18 (02) :222-226
[9]
THULBORNE T, 1976, J BONE JOINT SURG BR, V58, P456
[10]
ISIS SCANNING - A USEFUL ASSESSMENT TECHNIQUE IN THE MANAGEMENT OF SCOLIOSIS [J].
WEISZ, I ;
JEFFERSON, RJ ;
TURNERSMITH, AR ;
HOUGHTON, GR ;
HARRIS, JD .
SPINE, 1988, 13 (04) :405-408