977 poster SPOT SCANNING PROTON BEAM THERAPY DELIVERED AT THE PAUL SCHERRER INSTITUT FOR INTRACRANIAL AND EXTRACRANIAL MENINGIOMAS

2011 ◽  
Vol 99 ◽  
pp. S370
Author(s):  
D.C. Weber ◽  
R. Schneider ◽  
T. Koch ◽  
C. Ares ◽  
G. Goitein ◽  
...  
Keyword(s):  
Proton Beam ◽  
Proton Beam Therapy ◽  
Spot Scanning ◽  
Paul Scherrer

scholarly journals A Proton Beam Therapy System Dedicated to Spot-Scanning Increases Accuracy with Moving Tumors by Real-Time Imaging and Gating and Reduces Equipment Size

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e94971 ◽  
Author(s):  
Shinichi Shimizu ◽  
Naoki Miyamoto ◽  
Taeko Matsuura ◽  
Yusuke Fujii ◽  
Masumi Umezawa ◽  
...  
Keyword(s):  
Real Time ◽  
Proton Beam ◽  
Proton Beam Therapy ◽  
Real Time Imaging ◽  
Spot Scanning ◽  
Equipment Size

scholarly journals Dosimetric advantages of proton beam therapy compared to intensity-modulated radiation therapy for retroperitoneal chordoma

Rare Tumors ◽  
2019 ◽  
Vol 11 ◽  
pp. 203636131987851 ◽  
Author(s):  
Nathan Y Yu ◽  
Sujay A Vora
Keyword(s):  
Radiation Therapy ◽  
Proton Beam ◽  
Intensity Modulated Radiation Therapy ◽  
Proton Beam Therapy ◽  
Intensity Modulated ◽  
Spot Scanning ◽  
Prescription Dose ◽  
Biological Effectiveness ◽  
Primary Bone ◽  
Rare Diagnosis

Retroperitoneal chordomas are exceedingly rare and account for less than 5% of all primary bone malignancies. Their etiology remains unknown. We report a rare case of an extravertebral chordoma of the retroperitoneum in a 71-year-old man treated with surgical resection and post-operative spot-scanning proton beam therapy. We describe how to safely treat a retroperitoneal target to a prescription dose over 70 Gy (relative biological effectiveness) with spot-scanning proton beam therapy and also report a dosimetric comparison of spot-scanning proton beam therapy versus intensity-modulated radiation therapy. This case not only highlights a rare diagnosis of an extravertebral retroperitoneal chordoma but it also draws attention to the dosimetric advantages of proton beam therapy and illustrates a promising radiotherapeutic option for retroperitoneal targets.

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