Robotic Radiosurgery with Beams of
نویسندگان
چکیده
In radiosurgery, a moving beam of radiation acts as an ablative surgical instrument. Conventional systems for radiosurgery use a cylindrical radiation beam of xed 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.
منابع مشابه
Robotic Radiosurgery with Beams of Adaptable Shapes
In radiosurgery, a moving beam of radiation acts as an ablative surgical instrument. Conventional systems for radiosurgery use a cylindrical radiation beam of xed 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 addr...
متن کاملRobotic radiosurgery with noncylindrical collimators.
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 be moved only 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 a...
متن کاملCyberKnife: a robotic radiosurgery system.
The CyberKnife is a radiosurgical system consisting of a linear accelerator and robotic arm. Using guidance imaging, the system precisely locates tumors and delivers multiple beams of radiation therapy directly to the tumor site while minimizing radiation exposure of surrounding tissue. The CyberKnife has the capacity to treat tumors up to 6 cm in size and holds promise as a new radiosurgery tr...
متن کاملRadiosurgery: identification of efficient treatment beams guided by autostereoscopic visualization
In robotic radiosurgery, an arrangement of cylindrical beams forms a high dose area conformal to the target region. Beams start at various positions around the patient, and are oriented towards arbitrary points in the target. Due to the large number of potential beams, only a small subset of beams can be considered during treatment planning. An efficient heuristics to select promising candidate...
متن کاملStereotactic Radiosurgery in the Treatment of Glioblastoma Multiforme: Current Status of Technology and Potential Role of Microbeam Radiosurgery
Stereotactic radiosurgery is an emerging treatment option offered to patients with glioblastoma (GB). Radiosurgery is performed as an outpatient procedure and provides a safe and effective non-invasive treatment for focal GB. High-energy beams originating from cobalt sources placed into a helmet-shaped device (Gamma Knife®, Elekta) or generated by a linear accelerator (LINAC), rotating on a gan...
متن کامل