Patient Specific Dosimetry and Quality Assurance for an Active Uniform Scanning Proton Beam

2008 ◽  
Vol 72 (1) ◽  
pp. S652
Author(s):  
A.E. Mascia ◽  
M. Wolanski ◽  
R. Jesseph ◽  
D. Nichiporov
Keyword(s):  
Quality Assurance ◽  
Proton Beam ◽  
Patient Specific ◽  
Uniform Scanning

scholarly journals Revision surgery for incomplete resection or recurrence of cervical spine chordoma: a consecutive case series of 24 patients

2021 ◽  
Author(s):  
Peter Obid ◽  
Tamás Fekete ◽  
Philipp Drees ◽  
Daniel Haschtmann ◽  
Frank Kleinstück ◽  
...  
Keyword(s):  
Overall Survival ◽  
Cervical Spine ◽  
Survival Rate ◽  
Local Recurrence ◽  
Proton Beam ◽  
Revision Surgery ◽  
Patient Specific ◽  
Incomplete Resection ◽  
Pharyngeal Wall ◽  
Proton Beam Radiotherapy

Abstract Purpose Chordomas are rare tumors with an annual incidence of approximately one per million. Chordomas rarely metastasize but show a high local recurrence rate. Therefore, these patients present a major clinical challenge, and there is a paucity of the literature regarding the outcome after revision surgery of cervical spine chordomas. Available studies suggest a significantly worse outcome in revision scenarios. The purpose of this study is to analyze the survival rate, and complications of patients that underwent revision surgery for local recurrence or incomplete resection of chordoma at the craniocervical junction or at the cervical spine. Methods 24 consecutive patients that underwent revision surgery for cervical spine chordoma remnants or recurrence at a single center were reviewed retrospectively. We analyzed patient-specific surgical treatment strategies, complications, and outcome. Kaplan–Meier estimator was used to analyze five-year overall survival. Results Gross total resection was achieved in 17 cases. Seven patients developed dehiscence of the pharyngeal wall, being the most common long-term complication. No instability was observed. Postoperatively, four patients received proton beam radiotherapy and 12 patients had combined photon and proton beam radiotherapy. The five-year overall survival rate was 72.6%. Conclusion With thorough preoperative planning, appropriate surgical techniques, and the addition of adjuvant radiotherapy, results similar to those in primary surgery can be achieved.

11. Sensitivity of patient specific quality assurance to simulated delivery errors for CyberKnife MLC treatments and effects on DVH

2018 ◽  
Vol 56 ◽  
pp. 67-68 ◽  
Author(s):  
M. Zani ◽  
S. Calusi ◽  
R. Doro ◽  
N. Bellosi ◽  
M. Cassinelli ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Patient Specific

Implementation of an in vivo radiochromic film QA procedure

2016 ◽  
Author(s):  
◽  
Jason Stanford
Keyword(s):  
Quality Assurance ◽  
Radiation Treatment ◽  
Radiochromic Film ◽  
In Vivo Dosimetry ◽  
Patient Specific ◽  
Attractive Alternative ◽  
Quality Assurance Procedure ◽  
Imaging Device ◽  
Treatment Techniques

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Advance treatment techniques, such as IMRT and dynamic conformal arc delivery, are novel radiation treatment procedures at the forefront of accurate and precise radiotherapy. However, the risk of suboptimal treatment resulting in injury is far greater with these techniques due to their complexity. An in vivo quality assurance system is the most appropriate validation of the delivered dose to the patient from these techniques. The intent of this research is to propose an in vivo dosimetry quality assurance procedure using radiochromic film. This research proved that radiochromic in vivo dosimetry is a viable method of detecting spatial patient specific errors in radiotherapy; however, the process is time consuming and not sensitive enough for dosimetric errors associated with weight change. Although time consuming, in vivo radiochromic dosimetry is an attractive alternative for small cancer centers and developing countries without the large startup capital to acquire the electronic portal imaging device necessary for EPID in vivo dosimetry.

scholarly journals [P134] Validation of the sunnuclear arccheck diode array for the patient specific quality assurance (PSQA) in stereotactic body radiotherapy treatment (SBRT) delivered with VMAT

2018 ◽  
Vol 52 ◽  
pp. 137-138
Author(s):  
Luca Leandro Vigna ◽  
Ashenafi Kumela Rikitu ◽  
Eleonora Monès ◽  
Federica Puricelli ◽  
Chiara Secco ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Stereotactic Body Radiotherapy ◽  
Patient Specific ◽  
Diode Array ◽  
Radiotherapy Treatment
Sign in / Sign up

Export Citation Format

Share Document