Verbesserte Lagerungsreproduzierbarkeit eines nichtinvasiven Hochpräzisionsmaskensystems in der stereotaktischen Radiotherapie durch eine integrierte Kieferfixierung

Lopatta, Eric; Liesenfeld, Susie-Maria; Bank, P.; Würm, Reinhard; Günther, R; Wiezorek, Tilo; Wendt, Thomas

doi:10.1007/s00066-003-0941-3

Cited by 14 publications

(3 citation statements)

References 15 publications

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“…Existing clinical studies have shown that mask-based head refixation with errors of 2–3 mm can be significantly improved by integrating an additional fixation (39, 40). The BrainLAB Novalis system has also recently included an “ExacTrac” image-guided technique for target positioning.…”

Section: Resultsmentioning

confidence: 99%

Clinical Results of a Pilot Study on Stereovision-Guided Stereotactic Radiotherapy and Intensity Modulated Radiotherapy

Kleinberg

Rigamonti

et al. 2010

Technol Cancer Res Treat

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Real-time stereovision-guidance has been introduced for efficient and convenient fractionated stereotactic radiotherapy (FSR) and image-guided intensity-modulated radiation therapy (IMRT). This first pilot study is to clinically evaluate its accuracy and precision as well as impact on treatment doses. Sixty-one FSR patients wearing stereotactic masks (SMs) and nine IMRT patients wearing flexible masks (FMs), were accrued. Daily target reposition was initially based-on biplane-radiographs and then adjusted in six degrees of freedom under real-time stereovision guidance. Mean and standard deviation of the head displacements measured the accuracy and precision. Head positions during beam-on times were measured with real-time stereovisions and used for determination of delivered doses. Accuracy ± precision in direction with the largest errors shows improvement from 0.4 ± 2.3 mm to 0.0 ± 1.0 mm in the inferior-to-superior direction for patients wearing SM or from 0.8 ± 4.3 mm to 0.4 ± 1.7 mm in the posterior-to-anterior direction for patients wearing FM. The image-guidance increases target volume coverage by >30% for small lesions. Over half of head position errors could be removed from the stereovision-guidance. Importantly, the technique allows us to check head position during beam-on time and makes it possible for having frameless head refixation without tight masks.

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Section: Resultsmentioning

confidence: 99%

Clinical Results of a Pilot Study on Stereovision-Guided Stereotactic Radiotherapy and Intensity Modulated Radiotherapy

Kleinberg

Rigamonti

et al. 2010

Technol Cancer Res Treat

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“…Episcleral brachytherapy was developed in the 1960s by Stallard [20]. Other eye-conserving radiotherapy techniques, like stereotactic irradiation [12], proton [5] and heavy-particle irradiation, have been developed and successfully applied in the clinical setting. Radiotherapy is also used in various other ophthalmic neoplasms [1,8].…”

Section: Introductionmentioning

confidence: 99%

“…The accuracy of measurements of tumor size is as important for ruthenium plaque therapy as an exact patient positioning is for external-beam therapy [3,18] and stereotactic irradiation [12]. The standard imaging method for measuring tumor height and diameter in uveal melanoma is ultrasound (US), which is routinely used in the initial diagnostic work-up [4].…”

Section: Introductionmentioning

confidence: 99%