scholarly journals EP-1686: Frameless radiosurgery in brain metastasis with Tomotherapy: a comparison toward dosimetric index

2016 ◽  
Vol 119 ◽  
pp. S787-S788
Author(s):  
A. Ciarmatori ◽  
G. Guidi ◽  
A. Bruni ◽  
N. Maffei ◽  
C. Vecchi ◽  
...  
2018 ◽  
Vol 79 (04) ◽  
pp. 341-343 ◽  
Author(s):  
Jacek Furtak ◽  
Maciej Harat

AbstractFrameless radiosurgery is now a common alternative to traditional in-frame treatment. Several dosimetric studies have reported small in-mask positioning inaccuracies during frameless radiosurgery. We present a case of an uncommonly large deviation in in-mask motion detected offline in a patient undergoing linear accelerator–based frameless radiosurgery. Our case illustrates how the use of a thermoplastic mask can lead to unacceptable setup errors for passive image-guided radiosurgery. The case underlines the need for correct patient preparation, adequate time between mask molding and computed tomography, and routine intrafraction imaging. Image-guided positioning is recommended to achieve clinically acceptable setup accuracy (< 1 mm) for stereotactic radiosurgery.


Author(s):  
Rosa Marquez-Pardo ◽  
Lourdes Garcia-Garcia-Doncel ◽  
Baena-Nieto M Gloria ◽  
Manuel Cayon-Blanco ◽  
Rosario Lopez-Velasco ◽  
...  

Therapy ◽  
2006 ◽  
Vol 3 (1) ◽  
pp. 97-112 ◽  
Author(s):  
Rose Marie Tyson ◽  
Dale F Kraemer ◽  
Matthew A Hunt ◽  
Leslie L Muldoon ◽  
Peter Orbay ◽  
...  

2006 ◽  
Vol 105 (Supplement) ◽  
pp. 238-240 ◽  
Author(s):  
Albertus T. C. J. van Eck ◽  
Gerhard A. Horstmann

✓The occurrence of brain metastases from a malignant schwannoma of the penis is extremely rare. In patients with a single brain metastasis, microsurgical extirpation is the treatment of choice and verifies the diagnosis. In cases of multiple or recurrent metastases, radiosurgery is an effective and safe therapy option. Gamma Knife surgery was performed in a patient who had previously undergone tumor resection and who presented with recurrence of the lesion and three de novo brain metastases. This first report on brain metastasis from a malignant penile schwannoma illustrates the efficacy and safety of radiosurgical treatment for these tumors.


2005 ◽  
Vol 102 (Special_Supplement) ◽  
pp. 287-288 ◽  
Author(s):  
Thomas Mindermann

Object. The authors evaluated prognostic factors for tumor recurrence and patient survival following gamma knife surgery (GKS) for brain metastasis. Methods. A retrospective review of 101 patient charts was undertaken for those patients treated with GKS for brain metastases from 1994 to 2001. Recurrence rates of brain metastasis following GKS depended on the duration of patient survival. Long-term survival was associated with a higher risk of tumor recurrence and shorter-term survival was associated with a lower risk. The duration of survival following GKS for brain metastases seems to be characteristic of the primary disease rather than the cerebral disease. Conclusions. Recurrence rates of brain metastasis following GKS are related to duration of survival, which is in turn mostly dependent on the nature and course of the primary tumor.


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