scholarly journals Varian ethos online adaptive radiotherapy for prostate cancer: Early results of contouring accuracy, treatment plan quality, and treatment time

2021 ◽  
Author(s):  
Mikel Byrne ◽  
Ben Archibald‐Heeren ◽  
Yunfei Hu ◽  
Amy Teh ◽  
Rhea Beserminji ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Treatment Time ◽  
Treatment Plan ◽  
Adaptive Radiotherapy ◽  
Plan Quality ◽  
Early Results ◽  
Contouring Accuracy

scholarly journals The implementation of an empty bladder filling protocol for localised prostate volumetric modulated arctherapy (VMAT): early results of a single institution service evaluation

2020 ◽  
Vol 93 (1114) ◽  
pp. 20200548
Author(s):  
Gayan Chetiyawardana ◽  
Peter J. Hoskin ◽  
Yat Man Tsang
Keyword(s):  
Prostate Cancer ◽  
Treatment Time ◽  
External Beam ◽  
Bladder Filling ◽  
Full Bladder ◽  
Early Results ◽  
Gu Toxicity ◽  
The Impact ◽  
Empty Bladder

Objective: To examine the impact of an empty bladder filling protocol on patients receiving radical RT for localised prostate cancer on post RT toxicity and biochemical progression free survival (bPFS). Methods and materials: Records of patients receiving radical external beam RT (EBRT) for localised prostate cancer with a full or empty bladder were reviewed. These included the bladder size on planning CT, daily online image guided RT (IGRT) setup data, treatment time and post treatment follow up data.These included bPFS, gastrointestinal(GI) and genitourinary(GU) toxicity scoring post RT using the CTCAE v4.0 scoring system. All patients included in the study were planned and treated under the same departmental clinical protocol with VMAT and daily online IGRT corrections. Results: 90 patients were treated with 60 Gy in 20 fractions with a median follow up of 48 months. At 4 years bPFS in the empty bladder group was 100 and 98% in the full bladder group (p = 0.27). There were no statistically significant differences in cumulative ≥Grade 2GU (p = 0.10) and GI (p = 0.27) toxicity rates between the two bladder filling protocols. No statistically significant differences in the IGRT setup between the two groups of patients. Although the median treatment times per fraction were not statistically different between the two groups (p = 0.47), patients in the full bladder filling group were required to spend a longer time in the RT department per treatment session for bladder filling. Conclusion: An empty bladder filling protocol has non-inferior bPFS, GI and GU toxicities at 4 years in patients with localised prostate cancer using advanced RT techniques in comparison to a full bladder filling protocol. A longer follow up with a larger sample size is required to validate this approach. Advances in knowledge: This study suggests that an empty bladder filling protocol can be used in external beam EBRT for localised prostate cancer with non-inferior treatment outcomes.

SU-E-T-38: An Overlap-Wall-Histogram Plan Quality Classifier for Automatic Prostate Cancer IMRT Treatment Plan Quality Control

2014 ◽  
Vol 41 (6Part11) ◽  
pp. 230-230
Author(s):  
T Song ◽  
Z Tian ◽  
X Jia ◽  
L Zhou ◽  
S Jiang ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Quality Control ◽  
Treatment Plan ◽  
Plan Quality ◽  
Imrt Treatment Plan

scholarly journals EP-1911: Impact on prostate cancer treatment plan quality by MR Linac treatment planning system

2018 ◽  
Vol 127 ◽  
pp. S1037-S1038
Author(s):  
R.L. Christiansen ◽  
C.R. Hansen ◽  
R.H. Dahlrot ◽  
A.S. Bertelsen ◽  
O. Hansen ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Treatment ◽  
Treatment Planning ◽  
Treatment Plan ◽  
Planning System ◽  
Treatment Planning System ◽  
Plan Quality ◽  
Prostate Cancer Treatment

scholarly journals PO-0928 Treatment plan quality assessment for focal dose escalation in prostate cancer

2019 ◽  
Vol 133 ◽  
pp. S498
Author(s):  
M. Van Schie ◽  
T. Janssen ◽  
D. Eekhout ◽  
I. Walraven ◽  
A. Kotte ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Quality Assessment ◽  
Dose Escalation ◽  
Treatment Plan ◽  
Plan Quality
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