Phantom based kV-CBCT dose plan calculations for re-planning decision: comparison with CT-based dose plans
نویسنده
چکیده
s 17th Annual SASRO Meeting, Davos 2013 Physics Oral P01-22 P01 Phantom based kV-CBCT dose plan calculations for re-planning decision: comparison with CT-based dose plans P01 P02 First experimental results of motion mitigation by continuous line scanning P02 P03 Impact of respiratory-correlated CT reconstruction algorithms in the choice of margin definition for free breathing lung treatment P03 P04 Adequate margin definition for scanned particle therapy in the incident of intra-fractional motion P04 P05 Suitability of flattening filter free hybridarc for stereotactic radiosurgery P05 P06 Deformation Evaluation using CBCT for Dynamic Adaptive Radiotherapy (DART) in Patients with Prostate Cancer: A Planning Study. P06 P07 Advanced Hyperthermia Cancer Treatment Planning System P07 P08 Forward planned modulated electron radiation therapy (MERT) for different anatomical locations: a comparison with pure photon plans P08 P09 Macro Monte Carlo interface with beam model for treatment planning in proton therapy P09 P10 Using the Swiss Monte Carlo Plan for inverse treatment planning of MERT P10 P11 State of submillimeter in vivo dosimetry with Gafchromics P11 P12 Pre-treatment QA for VMAT flattening filter free beams with portal imager using GLAAS algorithm P12 P13 Dosimetric comparison of Acuros XB and AAA with COMPASS-CCC calculations for volumetric modulated arc therapy P13 P14 SBRT for lung cancer treatments: dosimetric evaluation using FFF beams P14 P15 Towards a more precise dynamic scanned proton treatment – online deformable motion reconstruction using PCA motion model P15 P16 VMAT planning for Elekta linacs in the Varian planning system Eclipse: a comparison study of VMAT plans with fixed field IMRT plans P16 P17 Collapsed cone algorithm and its impact on dose distributions in HDR brachytherapy for partial breast irradiations P17 P18 Log file based dose calculations as a quality assurance tool in scanned beam proton radiotherapy P18 P19 A breathing anthropomorphic phantom for experimental studies of moving tumors in scanning proton therapy P19 P20 Geometrical and dosimetrical evaluation of a prototype motion tracking system using the treatment couch P20 P21 Hypofractionated radiotherapy has the potential for second cancer reduction P21 P22 Retrospective analysis of target volume dose coverage using CBCTs acquired for Accelerated Hypo-Fractionated Radiation Therapy (AHFRT) in lung cancer. P22
منابع مشابه
Study of Variation in Dose Calculation Accuracy Between kV Cone-Beam Computed Tomography and kV fan-Beam Computed Tomography
Cone-beam computed tomography (CBCT) images are presently used for geometric verification for daily patient positioning. In this work, we have compared the images of CBCT with the images of conventional fan beam CT (FBCT) in terms of image quality and Hounsfield units (HUs). We also compared the dose calculated using CBCT with that of FBCT. Homogenous RW3 plates and Catphan phantom were scanned...
متن کاملUse of kilovoltage X-ray volume imaging in patient dose calculation for head-and-neck and partial brain radiation therapy
BACKGROUND To evaluate the accuracy of using kilovoltage x-ray cone-beam computed tomography (kV-CBCT) imaging for in vivo dose calculations. METHODS A Region-of-Interest (ROI) CT number mapping method was developed to generate the cone-beam CT number vs. relative electron density calibration curve for 3D dose calculations. The stability of the results was validated for three consecutive mont...
متن کاملAssessment of image quality and dose calculation accuracy on kV CBCT, MV CBCT, and MV CT images for urgent palliative radiotherapy treatments
A clinical workflow was developed for urgent palliative radiotherapy treatments that integrates patient simulation, planning, quality assurance, and treatment in one 30-minute session. This has been successfully tested and implemented clinically on a linac with MV CBCT capabilities. To make this approach available to all clin-ics equipped with common imaging systems, dose calculation accuracy b...
متن کاملTissue Density Mapping of Cone Beam CT Images for Accurate Dose Calculations
Purpose: To improve the accuracy in megavoltage photon beam dose calculation in CBCT-based radiation treatment (RT) plans, using a kilovoltage cone-beam computed tomography (CBCT)-todensity-step (CBCT-SF) function. Materials and Methods: The CBCT-SF table is constructed from differential histograms of the voxel values of CBCT and Fan-beam CT (FBCT). From the CBCT histograms, frequency peaks rep...
متن کاملDosimetric impact of tumor treating field (TTField) transducer arrays onto treatment plans for glioblastomas – a planning study
BACKGROUND Tumor-Treating Fields (TTFields) are a novel treatment strategy for glioblastoma (GBM) that is approved for the use concomitantly to adjuvant chemotherapy. Preclinical data suggest a synergistic interaction of TTFields and radiotherapy (RT). However, the dosimetric uncertainties caused by the highly dense arrays have led to caution of applying the TTF setup during RT. METHODS In a ...
متن کامل