Abstract
In radiosurgery, a moving beam of radiation acts as an ablative surgical instrument. Conventional systems for radiosurgery use a cylindrical radiation beam of fixed cross-section. The radiation source can only be moved along simple standardized paths. A new radiosurgical system based on a six degree-of-freedom robotic arm has been developed to overcome limitations of conventional systems. We address the following question: Can dose distributions generated by robotic radiosurgery be improved by using non-cylindrical radiation beams of adaptable cross-section? Geometric methods for planning the shape of the beam in addition to planning beam motion are developed. Design criteria considered in this context are: treatment time, radiation penumbra as well as transparency of interactive treatment planning. An experimental evaluation compares distributions generated with our new radiosurgical system using cylindrical beams to distributions generated with beams of adaptable shapes.
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References
Carol, M. An Automatic 3-D treatment planning and implementation system for optimized conformal therapy. Reprint of paper presented at 34th Annual Meeting Am. Soc. Therap. Radiology and Oncology, San Diego, Nov. 9–13, 1992.
Convery, D., Rosenbloom, M. The generation of intensity-modulated fields for conformal radiotherapy by dynamic collimation. Phys. Med. Biol., 36 (7): 1359–1374, 1992.
Kallman, P., Lind, A., Eklof, A., Brahme, A. Shaping of arbitrary dose distributions by dynamic multileaf collimation. Phys. Med. Biol., 33 (11): 1291–1300, 1988.
Leavitt, D., Martin, M., Moeller, J. H., Lee, W. Dynamic wedge techniques through computer-controlled collimator motion and dose delivery. Med. Phys., 17 (1): 8791, 1990.
Lutz, W., Winston, K. R., and Maleki, N. A System for stereotactic radiosurgery with a linear accelerator. Int. J. Radiation Oncology Biol. Phys., 14: 373–381, 1988.
Podgorsak, E. B., et al. Dynamic Stereotactic Radiosurgery. Intern. J. Radiation Oncology Biol. Phys., 14: 115–126, 1988.
Nedzi, L. A., Kooy, H. M., Alexander, E., et. al. Dynamic Field Shaping for Stereo-tactic Radiosurgery: A Modeling Study. Intern. J. Radiation Oncology Biol. Phys., 25: 859–869, 1993.
Rice, R. K., et al. Measurements of Dose Distributions in Small Beams of 6 MeV X-Rays. Phys. Med. Biol., 32: 1087–1099, 1987.
Schweikard, A., Adler, J. R., and Latombe, J. C. Motion Planning in Stereotaxic Radiosurgery. IEEE Tr. Robotics and Automation, 9, 6, 764–774, 1993.
Schweikard, A., Bodduluri, M., Tombropoulos, R. Z., Adler, J. R. Planning, Calibration and Collision Avoidance for Image-Guided Radiosurgery. Proc. IEEE Int. Workshop Intelligent Robots and Systems, 854–861, 1994.
Starkschall, G., Eifel, P. An interactive beam-weight optimization tool for three-dimensional radiotherapy treatment planning. Med. Phys., 19 (10): 155–164, 1992.
Webb, S. Optimization by simulated annealing of three-dimensional conformal treatment planning for radiation fields defined by a multi-leaf collimator. Phys. Med. Biol., 36 (9): 1201–1226, 1991.
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© 1995 Springer-Verlag Berlin Heidelberg
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Schweikard, A., Tombropoulos, R., Adler, J.R. (1995). Robotic Radiosurgery with Beams of Adaptable Shapes. In: Ayache, N. (eds) Computer Vision, Virtual Reality and Robotics in Medicine. CVRMed 1995. Lecture Notes in Computer Science, vol 905. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49197-2_16
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DOI: https://doi.org/10.1007/978-3-540-49197-2_16
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-59120-7
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