eprintid: 178
rev_number: 4
eprint_status: archive
userid: 6
dir: disk0/00/00/01/78
datestamp: 2008-10-13
lastmod: 2015-05-29 19:48:47
status_changed: 2009-04-08 16:55:22
type: report
metadata_visibility: show
item_issues_count: 0
creators_name: Orchard, Jeff
creators_name: Webber, Adam
contributors_name: Aggarwala, Rita
contributors_name: Agyemang, Ibrahim
contributors_name: Andries, Erik
contributors_name: Beck, Melanie
contributors_name: Beltaos, Elaine
contributors_name: Canton, Alicia
contributors_name: Dubois, Olivier
contributors_name: Fortin, Charles
contributors_name: Granados, Ana
contributors_name: Landry, Maria
contributors_name: Lou, Edmond
contributors_name: Mueck, Matthias
contributors_name: Paulhus, Marc
title: Mathematical Surface Matching of Maps of the Human Torso
ispublished: pub
subjects: medicine
studygroups: ipsw6
companyname: Capital Health
full_text_status: public
abstract: This report concerns with the collection and processing of data acquired from three-dimensional (3D) surface scans of scoliosis patients' backs. Two main issues were addressed: the reproducibility of the results, and stringent time constraints. In particular, user influence should be removed from each step of the data processing, and results should be obtained within three minutes of acquiring the scan.

The report begins with a description of the data collection, followed by a description of the data processing required to align two back surfaces. A section is devoted to calculating the cosmetic score, a measure of deformity of the back. The paper concludes with a few suggestions for improvements on data collection and use.
problem_statement: Scoliosis is a fairly common condition that usually appears during adolescence. It involves mild to severe deformations of the spine. Doctors and patients are interested in measuring the progression of the disease. Internal changes in spine angles and twists can be seen from X-rays, but surface (appearance) changes are often of primary concern to adolescent patients. 

Measuring the amount of surface change can be a difficult problem. Natural growth, changing body shape, and progression of the disease all factor into forming the shape of the patient's torso. Separating these effects, and extracting the change due to scoliosis alone, is challenging. In an effort to
quantify the changes due to scoliosis, Capital Health acquires three-dimensional (3D) surface scans of a subject's back every 3 to 6 months using a laser scanner. The problem we wish to address in this workshop is how best to use this data to obtain useful measures for both the doctor and patient.
date: 2002
date_type: published
pages: 13
citation:   Orchard, Jeff and Webber, Adam  (2002) Mathematical Surface Matching of Maps of the Human Torso.  [Study Group Report]     
document_url: http://miis.maths.ox.ac.uk/miis/178/1/capital_health.pdf