Implementation of a burn scar assessment system by ultrasound techniques
| Autor: | Hung-Ju Chen, 陳泓儒 |
|---|---|
| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 Tissue injury and the ensuing healing process cause scar formation. In addition to physical disability, the subsequent disfigurements from burns often bring negative psychological impacts on the survivors. Scar hypertrophy and contracture limited joints motion and body functions. With the current technologies available, therapies no longer focus sorely on the process of wound healing, but also emphasize on the cosmetic and functional outcomes. Therefore, proper evaluation and assessment of the steps to nil scar status is expected. However, the frequently employed tools remained subjective. For example, Vancouver General Hospital (VGH) scar index uses color, pigmentation, vascularity, pliability, and depth of the scar as dependent variables. These parameters of VGH scar index just estimate the superficial surface, but can not evaluate the deeper contain within dermis. Ultrasound is a safe, inexpensive, and multifunctional probe. Its resolution is not inferior to other measurement methods. Although 3D ultrasound is available clinically. It’s not popular to use in scar estimation. The intra-organs or structure deep fascia usually are the targets. Only to it’s high penetration device and high cost. In this study, we proposed a new scar assessment system using ultrasound. By utilizing reconstruction methods to search the border of the scar, many parameters of the scar become evident: depth, area and volume. This objective measurement tool permits the clinician to better understand the effects of treatments and plan further therapies. In the present study, we used our quantitative assessment system on the arm of a seriously burned patient. In order to verify the systematic reconstruction method reliably, we constructed a model to imitate the scar. The final results showed that the accuracy rate could reach above 90%. That is a paramount issue to assess the total amount of scar. Therefore, another one objective facility is to assess these problems. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|