Jung-In Kim1,2,3, Joo-Hyun Chung1, Ohyun Kwon2, Jong Min Park1,2,3,4, Hong-Gyun Wu1,2,3,5,6. 1. Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea. 2. Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea. 3. Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea. 4. Robotics Research Laboratory for Extreme Environments, Advanced Institutes of Convergence Technology, Suwon, Korea. 5. Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea. 6. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
Abstract
INTRODUCTION: We investigated the correlation between optical surface imaging using a three-dimensional (3D) scanner and magnetic resonance imaging (MRI) for suggesting feasibility in the clinical process of tracking volume changes in head and neck patients during radiation treatment. METHODS: Ten patients were divided into two groups depending on the location of their tumor (i.e., right or left side). With weekly imaging data, the change in volume based on MRI was evaluated during the treatment course. Four volumes of interest (VOIs) were calculated on the 3D surface image of the facial and cervical areas using an optical 3D scanner, and the correlation between volumetric parameters were analyzed. RESULTS: The target volume changed significantly overall for both groups. The changes parotid volume reduced by up to 3.8% and 28.0% for groups A (right side) and B (left side), respectively. In Group A, VOI 1 on the facial area and VOI 3 on the cervical area decreased gradually during the treatment course by up to 3.3% and 10.7%, respectively. In Group B, only VOI 4 decreased gradually during the treatment course and reduced by up to 9.2%. In group A, the change in target volume correlated strongly with right-side parotid, VOI 1, and VOI 3, respectively. The parotid also showed strong correlations with VOIs (P < 0.01). The weight loss was strongly correlated with either PTV or parotid without statistical significance (P > 0.05). In group B (left side), the change in target volume correlated strongly with each volumetric parameter, including weight loss. For individual patient, PTV showed more correlation with VOIs on the cervical area than VOIs on the facial area. CONCLUSIONS: An optical 3D scanner can be applied to track changes in volume without radiation exposure during treatment and the optical surface image correlated with MRI.
INTRODUCTION: We investigated the correlation between optical surface imaging using a three-dimensional (3D) scanner and magnetic resonance imaging (MRI) for suggesting feasibility in the clinical process of tracking volume changes in head and neck patients during radiation treatment. METHODS: Ten patients were divided into two groups depending on the location of their tumor (i.e., right or left side). With weekly imaging data, the change in volume based on MRI was evaluated during the treatment course. Four volumes of interest (VOIs) were calculated on the 3D surface image of the facial and cervical areas using an optical 3D scanner, and the correlation between volumetric parameters were analyzed. RESULTS: The target volume changed significantly overall for both groups. The changes parotid volume reduced by up to 3.8% and 28.0% for groups A (right side) and B (left side), respectively. In Group A, VOI 1 on the facial area and VOI 3 on the cervical area decreased gradually during the treatment course by up to 3.3% and 10.7%, respectively. In Group B, only VOI 4 decreased gradually during the treatment course and reduced by up to 9.2%. In group A, the change in target volume correlated strongly with right-side parotid, VOI 1, and VOI 3, respectively. The parotid also showed strong correlations with VOIs (P < 0.01). The weight loss was strongly correlated with either PTV or parotid without statistical significance (P > 0.05). In group B (left side), the change in target volume correlated strongly with each volumetric parameter, including weight loss. For individual patient, PTV showed more correlation with VOIs on the cervical area than VOIs on the facial area. CONCLUSIONS: An optical 3D scanner can be applied to track changes in volume without radiation exposure during treatment and the optical surface image correlated with MRI.
Authors: David L Schwartz; Adam S Garden; Jimmy Thomas; Yipei Chen; Yongbin Zhang; Jan Lewin; Mark S Chambers; Lei Dong Journal: Int J Radiat Oncol Biol Phys Date: 2011-12-02 Impact factor: 7.038
Authors: Jerry L Barker; Adam S Garden; K Kian Ang; Jennifer C O'Daniel; He Wang; Laurence E Court; William H Morrison; David I Rosenthal; K S Clifford Chao; Susan L Tucker; Radhe Mohan; Lei Dong Journal: Int J Radiat Oncol Biol Phys Date: 2004-07-15 Impact factor: 7.038
Authors: David L Schwartz; Adam S Garden; Shalin J Shah; Gregory Chronowski; Samir Sejpal; David I Rosenthal; Yipei Chen; Yongbin Zhang; Lifei Zhang; Pei-Fong Wong; John A Garcia; K Kian Ang; Lei Dong Journal: Radiother Oncol Date: 2013-01-29 Impact factor: 6.280