Rastreo del movimiento respiratorio por medio de un sistema óptico
DOI:
https://doi.org/10.37004/sefm/2023.24.2.002Palabras clave:
radioterapia guiada por superficie, TAC 4D, rastreo respiratorioResumen
Se ha desarrollado un prototipo de rastreo del movimiento respiratorio de pacientes durante la toma de imágenes tomográficas en la planificación del tratamiento de radioterapia. El sistema se basa en cámaras de vídeo que toman imágenes del paciente y un programa que analiza las imágenes a tiempo real para calcular el movimiento de uno o varios puntos sobre la superficie del paciente. Se ha estudiado la exactitud del rastreo del movimiento y se han comparado los resultados con los de un sistema comercial. Los resultados indican que la exactitud del sistema en la medida de desplazamientos es menor de 1 mm y la exactitud en la respuesta temporal menor de 0.1 s, suficientes para rastrear movimientos respiratorios.
Referencias
Freislederer P et al. Recent advances in Surface Guided Radiation Therapy. Radiation Oncology. 2020;15(1):187. doi:10.1186/s13014-020-01629-w
Hoisak JDPDP et al. The Role of Optical Surface Imaging Systems in Radiation Therapy. Semin Radiat Oncol. 2018;28(3):185-193. doi:10.1016/j.semradonc.2018.02.003
Soufi M et al. Surface-imaging-based patient positioning in radiation therapy. In: Image-Based Computer-Assisted Radiation Therapy. Springer Singapore; 2017:237-270. doi:10.1007/978-981-10-2945-5_10
Batista V et al. Clinical paradigms and challenges in surface guided radiation therapy: Where do we go from here? Radiotherapy and Oncology. 2020;153:34-42. doi:10.1016/j.radonc.2020.09.041
Willoughby T et al. Quality assurance for nonradiographic radiotherapy localization and positioning systems: Report of Task Group 147. Med Phys. 2012;39(4):1728-1747. doi:10.1118/1.3681967
Al-Hallaq HA et al. AAPM task group report 302: Surface-guided radiotherapy. Med Phys. 2022;49(4):e82-e112. doi:10.1002/MP.15532
Romero RR et al. SEFM_Informe del GT sobre SGRT. 2022;23(1):1-46.
Crook JM et al. Prostate motion during standard Radiotherapy as assessed by fiducial markers. Radiotherapy and Oncology. 1995;37(1):35-42. doi:10.1016/0167-8140(95)01613-L
Ramsey CR et al. Image-guided helical tomotherapy for localized prostate cancer: technique and initial clinical observations. J Appl Clin Med Phys. 2007;8(3):2320. doi:10.1120/jacmp.v8i3.2320
Lu XQ et al. Organ Deformation and Dose Coverage in Robotic Respiratory-Tracking Radiotherapy. Int J Radiat Oncol Biol Phys. 2008;71(1):281-289. doi:10.1016/j.ijrobp.2007.12.042
Brock KK et al. Inclusion of organ deformation in dose calculations. Med Phys. 2003;30(3):290-295. doi:10.1118/1.1539039
Von Siebenthal M et al. Systematic errors in respiratory gating due to intrafraction deformations of the liver. Med Phys. 2007;34(9):3620-3629. doi:10.1118/1.2767053
Lizuain M et al. Recomendaciones para el control de calidad de equipos y técnicas de radioterapia guiada por la imagen (IGRT). In: Ma Cruz Lizuain Arroyo, ed. ADI; 2013:345
Bert C et al. Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients. Int J Radiat Oncol Biol Phys. 2006;64(4):1265-1274. doi:10.1016/j.ijrobp.2005.11.008
Cui G et al. Delivery efficiency of an Elekta linac under gated operation. J Appl Clin Med Phys. 2014;15(5):2-11. doi:10.1120/jacmp.v15i5.4713
Barfield G et al. Quality assurance of gating response times for surface guided motion management treatment delivery using an electronic portal imaging detector. Phys Med Biol. 2019;64(12). doi:10.1088/1361-6560/ab205a
Sixel KE et al. Deep inspiration breath hold to reduce irradiated heart volume in breast cancer patients. Int J Radiat Oncol Biol Phys. 2001;49(1):199-204. doi:10.1016/S0360-3016(00)01455-3
Zagar TM et al. Utility of Deep Inspiration Breath Hold for Left-Sided Breast Radiation Therapy in Preventing Early Cardiac Perfusion Defects: A Prospective Study. In: International Journal of Radiation Oncology Biology Physics. Vol 97. ; 2017:903-909. doi:10.1016/j.ijrobp.2016.12.017
Laaksomaa M et al. AlignRT ® and CatalystTM in whole-breast radiotherapy with DIBH: Is IGRT still needed? J Appl Clin Med Phys. 2019;20(3):97-104. doi:10.1002/acm2.12553
Hamming VC et al. Evaluation of a 3D surface imaging system for deep inspiration breath-hold patient positioning and intra-fraction monitoring. Radiation Oncology. 2019;14(1). doi:10.1186/s13014-019-1329-6
Barbés B et al. Development and clinical evaluation of a simple optical method to detect and measure patient external motion. J Appl Clin Med Phys. 2015;16(5):306-321
Fernández S et al. An optical method to study the characteristics of the patients’ breathing with disorders of voice. In: 22nd Congress of the SOMEF. ; 2017:1-26
