Assessment of Setup Accuracy Using Anatomical Landmarks for Breast and Chest Wall Irradiation With Surface Guided Radiation Therapy

2019 ◽  
Vol 9 (4) ◽  
pp. 239-247 ◽  
Author(s):  
Susan Kost ◽  
Bingqi Guo ◽  
Ping Xia ◽  
Chirag Shah
Keyword(s):  
Radiation Therapy ◽  
Chest Wall ◽  
Anatomical Landmarks ◽  
Setup Accuracy

Axillary Surgery for Early-Stage, Node-Positive Mastectomy Patients and the Use of Postmastectomy Chest Wall Radiation Therapy

2018 ◽  
Vol 25 (8) ◽  
pp. 2220-2228 ◽  
Author(s):  
Sara Gaines ◽  
Nicholas Suss ◽  
Ermilo Barrera ◽  
Catherine Pesce ◽  
Kristine Kuchta ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Chest Wall ◽  
Early Stage ◽  
Axillary Surgery ◽  
Node Positive

Ct Image Fusion as a Tool for Measuring in 3D the Setup Errors during Conformal Radiotherapy for Prostate Cancer

2006 ◽  
Vol 92 (2) ◽  
pp. 118-123 ◽  
Author(s):  
Raffaella Cambria ◽  
Federica Cattani ◽  
Mario Ciocca ◽  
Cristina Garibaldi ◽  
Giampiero Tosi ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Radiation Therapy ◽  
Image Fusion ◽  
The Body ◽  
Planning System ◽  
Treatment Planning System ◽  
Ct Image ◽  
Fusion Technique ◽  
Setup Accuracy ◽  
Image Fusion Technique

Aims and Background The importance of optimal daily patient positioning has been stressed in order to ensure treatment reproducibility and gain in accuracy and precision. We report our data on the 3D setup uncertainty during radiation therapy for prostate cancer using the CT image fusion technique. Methods Ten consecutive patients scheduled for radiation therapy for prostate cancer underwent 5 prone position CT scans using an individualized immobilization cast. These different setups were analyzed using the image fusion module of the ERGO 3D-Line Medical System (Milan, Italy) treatment planning system. The isocenter and the body marker displacements were measured. Results The 3D isocenter dislocations were quantified: systematic error was Σ3D = 3.9 mm, whereas random error was σ3D = 1 mm. The mean of the minimum displacements was 0.2 ± 1 mm showing that the immobilization device used allows an accurate setup to be obtained. Single direction errors were also measured showing systematic errors, ΣAP = 2.6 mm, ΣLL = 0.6 mm, ΣSI = 3 mm in the anterior-posterior, latero-lateral, superior-inferior direction, respectively. Related random errors were σAP = 1 mm, σLL = 0.6 mm, σSI = 1.2 mm. In terms of accuracy, our uncertainties are similar to those reported in the literature. Conclusions By applying the CT image fusion technique, a 3D study on setup accuracy was performed. We demonstrated that the use of an individualized immobilization system for prostate treatment is adequate to obtain good setup accuracy, as long as a high-quality positioning control method, such as the stereoscopic X-ray-based positioning system, is used.

Sign in / Sign up

Export Citation Format

Share Document