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S Stärk

Publications and source records attributed to S Stärk.

5 recordsLinked to original sources

[Stereotactic radiation therapy with a modified linear accelerator in patients with brain metastases].

UNLABELLED: The aim of the study was to analyze the results of stereotactic radiotherapy using a linear accelerator in patients with brain metastases. We quantified the following clinical parameters: tumor response and tumor control after therapy, survival, and side effects. Results of the treatment were compared with those from traditional treatment strategies such as surgery and whole brain irradiation. Sixty patients with brain metastases (80 lesions, 36 men and 24 women, mean age 57 years) were treated with stereotactic radiotherapy. The mean follow-up time was 13 months. CONCLUSION: Stereotactic radiotherapy is an important option in the treatment strategy for patients with brain metastases. In comparison to whole brain irradiation, stereotactic radiotherapy achieved a higher local tumor control with a lower rate of side effects. In comparison to surgery, stereotactic radiotherapy has the advantages of shorter treatment time and lower treatment-related morbidity and mortality.

Adult↗

Treatment planning for conformal stereotactic radiotherapy.

Due to three dimensional planning techniques it is possible to conform the high dose region precisely to a target volume inside the brain. Special patient fixation and positioning systems allow a high precision in repositioning of the patient thus allowing fractionated stereotactic radiotherapy. Conformation can be achieved with many different irradiation techniques for example with a linear accelerator using noncoplanar arcs or conformal static beams. Noncoplanar arc therapy with multiple isocenters and conformal static beam therapy with one isocenter are compared. In both cases the DVHs of the planning target volume and normal tissue are calculated and discussed.

Humans↗