| Author/Editor | Podgoršak, EB; Souhami, L; Caron, JL; Pla, M; Clark, B; Pla, C; Cadman, P | |
| Title | A technique for fractionated stereotactic radiotherapy in the treatment of intracranial tumors | |
| Type | članek | |
| Source | Int J Radiat Oncol Biol Phys | |
| Vol. and No. | Letnik 27, št. 5 | |
| Publication year | 1993 | |
| Volume | str. 1225-30 | |
| Language | eng | |
| Abstract | PURPOSE: The excellent treatment results obtained with traditional radiosurgery have stimulated attempts to broaden the range of intracranial disorders treated with radiosurgical techniques. For major users of radiosurgery this resulted in a gradual shift from treating vascular diseases in a single session to treating small, well delineated primary tumors on a fractionated basis. In this paper we present the technique currently used in Montreal for the fractionated stereotactic radiotherapy of selected intracranial lesions. METHODS AND MATERIALS: The regimen of six fractions given every other day has been in use for "fractionated stereotactic radiotherapy" in our center for the past 5 years. Our current irradiation technique, however, evolved from our initial method of using the stereotactic frame for target localization and first treatment, and a "halo-ring" with tattoo skin marks for the subsequent treatments. Recently, we developed a more precise irradiation technique, based on an in-house-built stereotactic frame which is left attached to the patient's skull for the duration of the fractionated regimen. Patients are treated with the stereotactic dynamic rotation technique on a 10 MV linear accelerator (linac). RESULTS: In preparation for the first treatment, the stereotactic frame is attached to the patient's skull and the coordinates of the target center are determined. The dose distribution is then calculated, the target coordinates are marked onto a Lucite target localization box, and the patient is placed into the treatment position on the linac with the help of laser positioning devices. The Lucite target localization box is then removed, the target information is tattooed on the patient's skin, and the patient is given the first treatment. The tattoo marks in conjunction with the target information on the Lucite target localization box are used for patient set-up on the linac for the subsequent 5 treatments.(trunc.) | |
| Descriptors | BRAIN NEOPLASMS RADIOTHERAPY RADIOTHERAPY STEREOTAXIC TECHNIQUES |