Volume estimation in breast reconstruction after mastectomy
Date Issued
2007
Date
2007
Author(s)
Chien, Hsiung-Fei
DOI
en-US
Abstract
Breast cancer is the most common cancer among women in the world and also in Taiwan. All breast cancer treatment has the potential to adversely affect breast appearance and cause morbidity due to deformity. Reconstructive breast surgery has proved to be beneficial for the development of psychological outcome and self-image. While the decrease in death rates from female breast and higher incidence in younger women, we can expect there will be more breast cancer patients in need of reconstruction. Without sound information management and refinement in our total management of breast cancer which includes sound reconstruction, we will be out of competition. Since symmetry is the first priority patients ask for, we should first create long-term equal volume of breast by careful preoperative planning which should include 3D volume estimation and then use this volume and 3D imaging device to monitor the development of reconstructed breasts.
In this thesis, we described a novel method for constructing 3D human breast models with only some sample points which are captured by using a manual remodeled probing device. We first manually remodel a robot-arm-like device to be a probing device and calibrate it to have a reasonable precision. Then, we capture some sample points on a real human breast and use the sampled points to construct the 3D breast model. For further uses, the constructed 3D breast models are re-meshed to be consistent models. The main purpose of this method is not only to provide a cheaper method than using a 3D scanner but also to keep the patients’ privacy while capturing the breast data. By using our method, the patients can still wear their underwear or a thin robe, and are not necessarily stark-naked.
Volume estimation by this 3D imaging device is easy, efficient and acceptable for both patients and the personnel using it. It was most useful when there was no other reference (such as breast specimen weight) except the opposite intact breast in delayed reconstruction cases. It is still very useful in immediate reconstruction when prosthesis is planned to be implanted. Although there is breast specimen for reference, the weight of breast specimen varied greatly when there are a lot of breast tissue or axillar content included. In such cases, precise preoperative volume estimation could lead to a better choice of prosthesis size, when you can only try once. However, in immediate reconstruction with autologous tissue such as DIEP flap, since we can discard piece by piece of the excess tissue until appropriate, then volume estimation is less helpful but still it can accelerate this process. Since there are many factors affecting the final result such as fatty tissue necrosis, swelling and discrepancy in volume with the opposite breast, we can use this tool for monitoring and design subsequent revision such as augmentation or reduction mammaplasty.
Subjects
三度空間模型重建
女性乳房
三度空間追蹤器
乳房重建
乳房成形術
乳房切除
3D Model Construction
Human Breast
Probing Device
3D Tracker
Breast reconstruction
mastectomy
mammaplasty
SDGs
Type
other
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