Initial clinical experience with frameless stereotactic radiosurgery: analysis of accuracy and feasibility
Identifieur interne : 006679 ( Istex/Curation ); précédent : 006678; suivant : 006680Initial clinical experience with frameless stereotactic radiosurgery: analysis of accuracy and feasibility
Auteurs : Timothy C. Ryken [États-Unis] ; Sanford L. Meeks [États-Unis] ; Edward C. Pennington [États-Unis] ; Patrick Hitchon [États-Unis] ; Vincent Traynelis [États-Unis] ; Nina A. Mayr [États-Unis] ; Frank J. Bova [États-Unis] ; William A. Friedman [États-Unis] ; John M. Buatti [États-Unis]Source :
- International Journal of Radiation Oncology, Biology, Physics [ 0360-3016 ] ; 2001.
English descriptors
- KwdEn :
- Actual error, Biol, Biteplate, Biteplate reseating reproducibility, Bova, Brain neoplasms, Computer-assisted radiotherapy, Computer-assisted radiotherapy planning, Frameless, Frameless radiosurgery, Frameless stereotactic radiosurgery, Friedman, Image acquisition, Image localization, Isocenter, Isocenters, Linear accelerator radiosurgery, Localization, Maxillary dentition, Metastasis, Misalignment, Oncol, Oncology, Passive markers, Patient motion, Phys, Radiat, Radiat oncol biol phys, Radiocameras system, Radiosurgery, Radiotherapy, Real time, Reference array, Registration error, Reproducibility, Reseating, Rigid body, Stereotactic, Stereotactic localization, Stereotactic radiosurgery, Stereotactic radiotherapy, Stereotaxic techniques, Tolerance limits, Treatment delivery, Vector error.
- Teeft :
- Actual error, Biol, Biteplate, Biteplate reseating reproducibility, Bova, Frameless, Frameless radiosurgery, Frameless stereotactic radiosurgery, Friedman, Image acquisition, Image localization, Isocenter, Isocenters, Linear accelerator radiosurgery, Localization, Maxillary dentition, Metastasis, Misalignment, Oncol, Oncology, Passive markers, Patient motion, Phys, Radiat, Radiat oncol biol phys, Radiocameras system, Radiosurgery, Radiotherapy, Real time, Reference array, Registration error, Reproducibility, Reseating, Rigid body, Stereotactic, Stereotactic localization, Stereotactic radiosurgery, Stereotactic radiotherapy, Tolerance limits, Treatment delivery, Vector error.
Abstract
Abstract: Purpose: To report on preliminary clinical experience with a novel image-guided frameless stereotactic radiosurgery system. Methods and Materials: Fifteen patients ranging in age from 14 to 81 received radiosurgery using a commercially available frameless stereotactic radiosurgery system. Pathologic diagnoses included metastases (12), recurrent primary intracranial sarcoma (1), recurrent central nervous system (CNS) lymphoma (1), and medulloblastoma with supratentorial seeding (1). Treatment accuracy was assessed from image localization of the stereotactic reference array and reproducibility of biteplate reseating. We chose 0.3 mm vector translation error and 0.3 degree rotation about each axis as the maximum tolerated misalignment before treating each arc. Results: The biteplates were found on average to reseat with a reproducibility of 0.24 mm. The mean registration error from CT localization was found to be 0.5 mm, which predicts that the average error at isocenter was 0.82 mm. No patient treatment was delivered beyond the maximum tolerated misalignment. The radiosurgery treatment was delivered in approximately 25 min per patient. Conclusion: Our initial clinical experience with stereotactic radiotherapy using the infrared camera guidance system was promising, demonstrating clinical feasibility and accuracy comparable to many frame-based systems.
Url:
DOI: 10.1016/S0360-3016(01)01756-4
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<term>Computer-assisted radiotherapy planning</term>
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<term>Image acquisition</term>
<term>Image localization</term>
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<term>Isocenters</term>
<term>Linear accelerator radiosurgery</term>
<term>Localization</term>
<term>Maxillary dentition</term>
<term>Metastasis</term>
<term>Misalignment</term>
<term>Oncol</term>
<term>Oncology</term>
<term>Passive markers</term>
<term>Patient motion</term>
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<term>Radiat oncol biol phys</term>
<term>Radiocameras system</term>
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<term>Radiotherapy</term>
<term>Real time</term>
<term>Reference array</term>
<term>Registration error</term>
<term>Reproducibility</term>
<term>Reseating</term>
<term>Rigid body</term>
<term>Stereotactic</term>
<term>Stereotactic localization</term>
<term>Stereotactic radiosurgery</term>
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<term>Stereotaxic techniques</term>
<term>Tolerance limits</term>
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<term>Frameless radiosurgery</term>
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<term>Image localization</term>
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<term>Misalignment</term>
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<term>Stereotactic localization</term>
<term>Stereotactic radiosurgery</term>
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<front><div type="abstract" xml:lang="en">Abstract: Purpose: To report on preliminary clinical experience with a novel image-guided frameless stereotactic radiosurgery system. Methods and Materials: Fifteen patients ranging in age from 14 to 81 received radiosurgery using a commercially available frameless stereotactic radiosurgery system. Pathologic diagnoses included metastases (12), recurrent primary intracranial sarcoma (1), recurrent central nervous system (CNS) lymphoma (1), and medulloblastoma with supratentorial seeding (1). Treatment accuracy was assessed from image localization of the stereotactic reference array and reproducibility of biteplate reseating. We chose 0.3 mm vector translation error and 0.3 degree rotation about each axis as the maximum tolerated misalignment before treating each arc. Results: The biteplates were found on average to reseat with a reproducibility of 0.24 mm. The mean registration error from CT localization was found to be 0.5 mm, which predicts that the average error at isocenter was 0.82 mm. No patient treatment was delivered beyond the maximum tolerated misalignment. The radiosurgery treatment was delivered in approximately 25 min per patient. Conclusion: Our initial clinical experience with stereotactic radiotherapy using the infrared camera guidance system was promising, demonstrating clinical feasibility and accuracy comparable to many frame-based systems.</div>
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