A frameless method for stereotactic radiotherapy
| Autor: | J W Rieke, S S Vermeulen, Douglas L. Jones, D A Christopherson, Mark D. Hafermann, John T. Washington, J J Travaglini |
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| Rok vydání: | 1993 |
| Předmět: |
Brain Diseases
medicine.medical_specialty business.industry Radiotherapy Planning Computer-Assisted Radiotherapy Dosage General Medicine Gold marker Radiotherapy Computer-Assisted Computed tomographic Surgery Models Structural Stereotaxic Techniques Stereotactic radiotherapy Evaluation Studies as Topic medicine Humans Radiology Nuclear Medicine and imaging Gold Phantom studies Nuclear medicine business Beam (structure) |
| Zdroj: | The British Journal of Radiology. 66:1142-1150 |
| ISSN: | 1748-880X 0007-1285 |
| DOI: | 10.1259/0007-1285-66-792-1142 |
| Popis: | A frameless method for stereotactic multiple arc radiotherapy (SMART) is described. Three short gold wires are implanted in the scalp approximately 100 mm apart. These are localized in a computed tomographic or angiographic study along with the target. Subsequently the gold markers are localized on beam films and the target position calculated using a computer program ISOLOC. This program provides the couch movements required to move the target to the isocentre and a micropositioner attached to the couch is used to make the adjustment. Beam films are repeated until the movements required are less than 1 mm in any direction. It is shown that the simple procedures of implanting the markers subcutaneously do not provide a stable reference system in about 25% of patients and the markers are now screwed into the cranium. The precision of the method is evaluated by phantom studies and measurements taken during several hundred treatments. |
| Databáze: | OpenAIRE |
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