| A new non-invasive and relocatable immobilization frame for fractionated stereotactic radiotherapy. | |
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MedLine Citation:
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PMID: 9681896 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: A newly developed non-invasive immobilization frame for stereotactic radiotherapy is presented, which is intended to be used for both imaging (computed tomography (CT) and angiography) and radiotherapeutic procedures. MATERIALS AND METHODS: The frame is made of duraluminium so as to be stable and light and it has an elliptical shape. The immobilization is achieved using three stable locations on the patient's head, i.e. the upper dentition, the nose and the back of the neck. The fixation on the three locations ensures complete immobilization in all directions. RESULTS: The immobilization frame can be fitted as many times as is needed to most heads. In order to assess the accuracy of relocation, repeated fittings on two volunteers and on 22 patients undergoing stereotactic treatment were performed (more than 200 mountings in total), which showed maximum anterior-posterior, inferior-superior and lateral reproducibility in positioning of less than 1 mm in all cases. CONCLUSIONS AND DISCUSSION: The in-house-constructed stereotactic frame is simple to use, easily made, non-invasive, relocatable and well tolerated by the patients, providing the possibility of multiple fractions. The major advantage of using such a non-invasive stereotactic frame is the flexibility in timing the different diagnostic procedures (CT and angiography) as well as providing the possibility to extend the use to large brain lesions (treatment without an additional collimator) where a high precision is also required. It also offers significant labour and cost saving over the invasive frames and the majority of the non-invasive frames. To date, 22 patients with ages varying between 12 and 70 years have been treated using this method. |
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Authors:
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K Theodorou; C Kappas; C Tsokas |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology Volume: 47 ISSN: 0167-8140 ISO Abbreviation: Radiother Oncol Publication Date: 1998 Jun |
Date Detail:
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Created Date: 1998-09-28 Completed Date: 1998-09-28 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8407192 Medline TA: Radiother Oncol Country: IRELAND |
Other Details:
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Languages: eng Pagination: 313-7 Citation Subset: IM |
Affiliation:
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Medical Physics Department, Medical School, University of Patras, Hellas, Greece. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Brain Neoplasms / surgery* Cerebral Angiography Child Dose Fractionation* Head Humans Immobilization Middle Aged Posture Radiosurgery / instrumentation* Radiotherapy Dosage Reproducibility of Results Tomography, X-Ray Computed |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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