Medical Dosimetry

Article	Citations
Directed Journal Reading (DJR) Program, Winter 2024	18
New Members List & Corporate Members List, Spring 2024	14
Risk evaluation of secondary malignancies after radiotherapy of breast cancer in light of the continuous development of planning techniques	14
Improved planning efficiency in multiple brain lesion SRS VMAT cases using Eclipse scripting	13
A feasibility study of adaptive radiation therapy for postprostatectomy prostate cancer	12
TEAM participation in the irradiation of IROC phantoms for cooperative group clinical trials	11
HN-SIB-BPI: A single click, sub-site specific, dosimetric scorecard tuned RapidPlan model created from a foundation model for treating head and neck with bilateral neck	11
Dosimetric comparison of coplanar and noncoplanar volumetric modulated arc therapy for hippocampal-sparing whole-brain radiation therapy	9
Dosimetric impact of VMAT delivery angles for early glottic cancer treatment	8
Evaluating Pareto optimal tradeoffs for hippocampal avoidance whole brain radiotherapy with knowledge-based multicriteria optimization	7
Verification of Qfix Encompass™ couch modeling using the Acuros XB algorithm and HypeArc™ using a high-spatial-resolution two-dimensional diode array	7
Assessing the impact of intrafraction motion correction on PTV margins and target and OAR dosimetry for single-fraction free-breathing lung stereotactic body radiation therapy	6
A planning-based feasibility study of MR-Linac treatment for anal cancer radiation therapy	6
Dosimetric comparison between RapidArc and HyperArc in hippocampal-sparing whole-brain radiotherapy with a simultaneous integrated boost	6
Evaluation of the ITV-margin and variables affecting bladder and mesorectal deformation during long course neoadjuvant radiotherapy for rectal cancer	6
2024 AAMD Outstanding Achievement Award	5
The Impact of COVID-19 on Medical Dosimetry Education: Students’ Perception on the Effectiveness of Program's Immediate Response	5
Effects of minimum monitor unit per dynamic control point on intensity‐modulated radiotherapy planning for nasopharyngeal carcinoma: A retrospective study	5
Difference in VMAT dose distribution for prostate cancer with/without rectal gas removal and/or adaptive replanning	5
The dosimetric impact of trade-off optimization in high-quality Craniospinal Irradiation plans based on volumetric modulated arc therapy technique	5
Statistical analysis of correlation of gamma passing results for two quality assurance phantoms used for patient-specific quality assurance in volumetric modulated arc radiotherapy	4
Whole-brain radiotherapy with hippocampus sparing and simultaneous integrated boost to metastases: A plan quality comparison study between Ethos, HyperArc, VMAT and Tomotherapy	4
Assessment of semi-automated stereotactic treatment planning for online adaptive radiotherapy in ethos	4
A retrospective evaluation of mixed energy volumetric modulated arc therapy for anal cancers with lymph node involvement, Eskens et al. 45 (2020): 339-345	4
Systematic evaluation and plan quality assessment of the Leksell® gamma knife® lightning dose optimizer	4

Improving the accuracy of motion quantification using area detector computed tomography for real-time tumor-tracking irradiation in stereotactic ablative radiotherapy	4
Comparative analysis of two dose-volume histogram prediction tools for treatment planning in volumetric-modulated arc therapy: A multi-planner study	4
The novel universal conformity index and unconformity index algorithms for radiotherapy treatment plans	3
Dosimetric comparison of robotic- and LINAC-based treatment of spine stereotactic body radiotherapy	3
Evaluation of prostate movement trend using individual patient anatomical information for prostate volumetric modulated arc therapy	3
Implementation and evaluation of an iterative-based algorithm for automatic beam angle optimization in breast cancer treatment planning	3
A Planning Comparison of IMRT vs. Pencil Beam Scanning for Deep Inspiration Breath Hold Lung Cancers	3
Carbon ion therapy for laterally located tumors require multiple fixed ports or a rotating gantry	3
New Members List & Corporate Members List, Summer 2025	3
Dose-volume comparisons of proton therapy for pencil beam scanning with and without multi-leaf collimator and passive scattering in patients with lung cancer	3
Contralateral breast radiation doses in breast cancer patients treated with helical tomotherapy	3
A survey of medical dosimetrists’ perceptions of efficiency and consistency of auto-contouring software	3
Development and clinical implementation of a comprehensive multifractionation scheme HyperArc-based RapidPlan model for single and multiple brain metastases	3
Machine learning prediction for lung dose in locally advanced esophageal cancer using volumetric modulated arc therapy	3
A measurement validation of improved plan deliverability with monitor unit objective tool for spine stereotactic ablative radiotherapy	3
Fully automated planning and delivery of hippocampal-sparing whole brain irradiation	3
Automatic organ contour check: One essential step in autonomous treatment planning	3
Double-vertebral segment SBRT via novel ring-mounted Halcyon Linac: Plan quality, delivery efficiency and accuracy	3
Treatment planning of scanned proton beams in RayStation	3
Application and dosimetric comparison of surface-guided deep inspiration breath-hold for lung stereotactic body radiotherapy	3
Breaking barriers: Stereotactic ablative proton and photon radiation therapy for renal cell carcinoma with extensive metastases: A case report	3
Dose-response modeling and treatment plan assessment with a python software toolkit	3
It's the little THANGS: Recording frequently unreported errors for dosimetry quality improvement	3
Method to assess the need for re-planning HDR brachytherapy tandem and ring treatments	3
Dose accumulation of daily adaptive plans to decide optimal plan adaptation strategy for head-and-neck patients treated with MR-Linac	3
Impact of rectal gas on the planning target volume margin for pelvic bone and prostate matching in prostate cancer patients receiving volumetric-modulated arc therapy	2
Novel application of an adapted virtual cone technique for the radiosurgical treatment of a 3 mm brain metastasis with a standard multileaf collimator	2
Dosimetric comparison of pencil beam scanning proton therapy with or without multi-leaf collimator versus volumetric-modulated arc therapy for treatment of malignant glioma	2
Assessment of automated non-coplanar stereotactic radiosurgery planning in single isocenteric linac-based treatment for brain metastases with respect to planner’s experience	2
Interfraction dose deviation and catheter position in cervical interstitial and intracavitary image guided HDR brachytherapy	2
Using dose volume histogram (DVH) predictions to improve the plan quality of helical tomotherapy (HT)	2
An introduction to low dose radiation therapy for shoulder osteoarthritis	2
A dosimetric comparison of 3D DCAT vs VMAT for palliative and early-stage liver lesions using eclipse TPS	2
Investigation of dose profile across the junction of deep inspiration breath hold, breast with supra-clavicle fossa treatments	2
Comparative dosimetric study of spot-scanning proton therapy versus volumetric-modulated radiation therapy for extrahepatic bile duct cancer	2
Dosimetric comparison of glioblastoma radiotherapy treatment plans on a low-field MRI-guided linear accelerator compared to conventional C-arm linear accelerator	2
Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases	2
Organ at risk dose-volume metrics in a series of hypofractionated breast radiotherapy with integrated boost	2
Direct dosimetric comparison of linear accelerator vs. Gamma Knife fractionated stereotactic radiotherapy (fSRT) of large brain tumors	2
Clinical impact of DVH uncertainties	2
Various cost functions evaluation of commercial biologically based treatment planning system for nasopharyngeal cancer	2
Validation of the Elekta iBEAM Evo couchtop modeling in the Monaco treatment planning system	2
Assessing proton plans with 3 different beam lines vs photon plans for early-stage lung cancer	2
Hypoglossal nerve delineation in nasopharyngeal carcinoma patients may reduce the radiation dose and damage to the nerve	2
Comparison of intensity-modulated radiation therapy (IMRT), 3D conformal proton therapy and intensity-modulated proton therapy (IMPT) for the treatment of metastatic brain cancer	1
Treating recurrent metastatic breast cancer to the skin with proton therapy	1
Novel hybrid treatment planning approach for irradiation a pediatric craniospinal axis	1
Plan evaluation tool for spatially fractionated radiation therapy for unresectable large tumors via spatial biological effective dose modeling in combination therapy	1
Comparing the robustness of different skin flash approaches using wide tangents, manual flash VMAT, and simulated organ motion robust optimization VMAT in breast and nodal radiotherapy	1
Diversity of medical dosimetry applicants and graduates	1

Directed Journal Reading (DJR) Program, Summer 2025	1
A case study of DIBH to spare abdominal organs at risk for renal cell carcinoma MR-guided radiotherapy	1
Dosimetric benefits of dynamic conformal arc therapy-combined with active breath-hold in lung stereotactic body radiotherapy	1
Evaluation of the trend of set-up errors during the treatment period using set-up margin in prostate radiotherapy	1
A Dosimetric evaluation of a high dose rate cobalt-60 brachytherapy source using shielded, single and multi-channel cylinder applicators for gynecological cancers	1
Ocular malignancies treated with iodine-125 low dose rate (LDR) brachytherapy at a single high-volume institution: A retrospective review	1
Lung SBRT treatment planning: a study of VMAT arc selection guided by collision check software	1
Dosimetric comparison of IMPT vs VMAT for multiple lung lesions: an NTCP model-based decision-making strategy	1
Dosimetric characterization of foam padding with posterior fields in palliative radiation therapy	1
Dose reduction of hippocampus using HyperArc planning in postoperative radiotherapy for primary brain tumors	1
Planning target volume margin in head and neck cancer patients undergoing radiation therapy: Estimations derived from own data and literature	1
Dosimetric evaluation of dose shaping by adaptive aperture and its impact on plan quality	1
The dosimetric advantages of perirectal hydrogel spacer in men with localized prostate cancer undergoing stereotactic ablative radiotherapy (SABR)	1
Analyzing changes in radiotherapy treatment planning error reporting during the COVID-19 pandemic	1
Dosimetric significance of manual density overrides in oropharyngeal cancer	1
Assessing dosimetric advancements in spatially fractionated radiotherapy: From grids to lattices	1
Based on 0.35 T magnetic resonance-guided radiotherapy, what are the nonisotropic PTV margins required for conventional prostate radiotherapy?	1
A clinical and time savings evaluation of a deep learning automatic contouring algorithm	1
Preservation of organs related to future sexual function during prostate stereotactic body radiotherapy: feasibility analysis through a re-optimization process	1
Dosimetric effect of intensity-modulated radiation therapy for postoperative non-small cell lung cancer with and without air cavity in the planning target volume	1
Automated single-isocenter stereotactic body radiotherapy for multiple metastases from breast cancer: A case study	1
From organ at risk to target organ: Dosimetric comparison of myocardial stereotactic ablative body radiotherapy between helical tomotherapy and volumetric arc therapy for refractory ventricular tachyc	1
Dose verification of 2 targets simultaneously for single-isocenter stereotactic radiation therapy and radiosurgery plans	1
Predictive modeling of dose-volume parameters of carcinoma tongue cases using machine learning models	1
Response to comments raised by a reader to the editor about our recently published paper “Validation of ClearCalc for efficient patient specific QA”	1
Evaluation of dose and anatomy variability for nasopharyngeal carcinoma radiotherapy with a new fully integrated CT-linac	1
Robust VMAT treatment planning for extremity soft tissue sarcomas	1
Lung SBRT: Dose gradient optimization based on target size	1
Clinical evaluation of deep learning and atlas-based auto-segmentation for organs at risk delineation	1
Proton versus photon comprehensive nodal breast irradiation	1
Impact of dose distribution on rotational setup errors in radiotherapy for prostate cancer	1
A retrospective study to establish recommendations for plan quality metrics in Lung SBRT	1
Efficacy of flattening filter-free beams with the acuros XB algorithm in thoracic spine stereotactic body radiation therapy	1
Advancing knowledge-based intensity modulated proton planning for adaptive treatment of high-risk prostate cancer	1
Efficacy of hydrogel spacer compared with intensity-modulated radiotherapy for 3-dimensional conformal radiotherapy for prostate cancer	1
A case study on postoperative radiation therapy of the big toe	1
Evaluation of the utility of rescans in the treatment of prostate and pelvic nodes with pencil beam scanning protons	1
Medical dosimetry virtual clinical education: Mentors’ perspectives	1
VMAT partial arc technique decreases dose to organs at risk in whole pelvic radiotherapy for prostate cancer when compared to full arc VMAT and IMRT	1
Patient setup accuracy in DIBH radiotherapy of breast cancer with lymph node inclusion using surface tracking and image guidance	1
Robust optimization used to mitigate setup uncertainties in vulvar patients receiving VMAT	1
Evaluation of the RadCalc collapsed cone dose calculation algorithm against measured data	1
Improvement in plan quality after Implementation of clinical goals in a large network of cancer centers	0
Leading past COVID-19: An analysis of remote work now and beyond	0
From protons to Picasso: recreating famous paintings using proton beams as a “Paintbrush”	0
Automated tumor localization and segmentation through hybrid neural network in head and neck cancer	0
Evaluation of incidental testicular dose with thermoluminescence dosimetry during prostate radiotherapy	0
Investigating the impact of rapidplan on ethos automated planning	0
Dosimetric benefits of 3D-printed modulated electron bolus following lumpectomy and whole-breast radiotherapy for left breast cancer	0
Directed Journal Reading (DJR) Program, Spring 2025	0
A novel end-to-end test for combined dosimetric and geometric treatment verification using a 3D-printed phantom	0
Treatment planning comparison between dynamic wave arc and volumetric modulated arc therapies for prostate-cancer treatment	0
Case study of a bolus helmet used to maintain optic chiasm and nerve sparing while improving target coverage using IMPT	0
Dose–volume comparison of intensity modulated proton therapy and volumetric modulated arc therapy for cervical esophageal cancer	0
Does irregular breathing impact on respiratory gated radiation therapy of lung stereotactic body radiation therapy treatments?	0
Incorporating organ deformation in biological modeling and patient outcome study for permanent prostate brachytherapy	0
An assessment of the influence of trade-off optimization in commercial knowledge based planning library creation for tongue cancer patients	0
CT-guided hydrogel injection for brachytherapy in cervical cancer: A case report	0
Two novel stereotactic radiotherapy methods for locally advanced, previously irradiated head and neck cancers patients	0
Analysis of R50% location dependence on LINAC-based VMAT cranial stereotactic treatments	0
New Members List & Corporate Members List, Autumn 2024	0
Integrated feathering for craniospinal irradiation improves patient safety and departmental efficiency	0
Performance of auto-planning for VMAT hypofractionated left whole-breast irradiation with simultaneous integrated boost	0
The spatial accuracy of ring-mounted halcyon linac versus C-arm TrueBeam linac for single-isocenter/multi-target SBRT treatment	0
Quality assessment of automatically planned o-ring linac SBRT plans for pelvic lymph node and lung metastases, evaluating the optimal minimum target size	0
RapidPlan hippocampal sparing whole brain model version 2—how far can we reduce the dose?	0
Rotating pods for stationary gantries	0
Performance assessment of the surface-guided radiation therapy system: Varian Identify	0
Evaluating the plan quality of a general head-and-neck knowledge-based planning model versus separate unilateral/bilateral models	0
New Members List & Corporate Members List, Spring 2025	0
Influence of aperture shape controller settings on dose distribution and treatment efficiency in lung stereotactic body radiation therapy with a 10 MV flattening filter-free beam	0
Regional nodal irradiation in breast cancer patients: Effects of deep inspiration breath hold on the internal mammary chain location	0
Automatic one-click planning for hippocampal-avoidance whole-brain irradiation in RayStation	0
Dosimetric comparison of HyperArc, conventional noncoplanar VMAT, and Halcyon-based coplanar VMAT in hippocampal-sparing whole-brain radiotherapy	0
Simple and effective immobilization for radiation treatment of choroidal melanoma	0
Effectiveness of 4-dimensional maximum intensity projection (4D-MIP) for respiratory motion management with uncertain interobserver delineation	0
Comment on “validation of ClearCalc for efficient patient specific QA”	0
The radiobiological effect of using Acuros XB vs anisotropic analytical algorithm on hepatocellular carcinoma stereotactic body radiation therapy	0
Dosimetric analysis on computed tomography myelography based treatment planning in stereotactic body radiotherapy for spinal metastases	0
Treatment plan quality for stereotactic treatment of multiple cranial metastases: Comparison of C-arm and O-ring treatment platforms	0

Dosimetric comparison between laterality-specific and general knowledge-based planning models for nonsmall cell lung cancer	0
Is adaptive planning necessary for patients with large tumor position displacements observed on daily image guidance during lung SBRT?	0
Dosimetric comparison and validation of Eclipse Anisotropic Analytical Algorithm (AAA) and AcurosXB (AXB) algorithms in RapidArc-based radiosurgery plans of patients with solitary brain metastasis	0
Plan comparison of left-sided breast postmastectomy radiotherapy: Halcyon IMRT and VMAT plan versus TrueBeam IMRT plan	0
New Members List & Corporate Members List, Summer 2024	0
Evaluation of the accuracy of automated segmentation based on deep learning for prostate cancer patients	0
Relative biological effectiveness-weighted dose sparing utilizing a linear energy transfer optimization function for organs-at-risk in left breast proton treatment plans	0
Accelerated hypofractionated magnetic resonance-guided adaptive radiotherapy for oligoprogressive non-small cell lung cancer	0
Dosimetric comparison of analytical anisotropic algorithm and the two dose reporting modes of Acuros XB dose calculation algorithm in volumetric modulated arc therapy of carcinoma lung and carcinoma p	0
Dosimetric comparison of intensity modulated radiotherapy and intensity modulated proton therapy in the treatment of recurrent nasopharyngeal carcinoma	0
Dose verification of virtual bolus application for helical tomotherapy	0
High-dose-rate interstitial brachytherapy vs external beam radiation for the treatment of complex keloids	0
Dosimetric comparison of magnetic resonance-guided radiation therapy, intensity-modulated proton therapy and volumetric-modulated arc therapy for distal esophageal cancer	0
Modelling of silicone breast implants for radiotherapy treatment planning	0
Comparison of setup errors of immobilization devices for thoracic radiotherapy	0
SAVI catheter digitization impact: A single institution multiuser uncertainty study	0
Hippocampal-sparing whole-brain radiotherapy under coplanar or noncoplanar VMAT	0
Novel multileaf collimator designs with tongues and grooves in leaf end and Monte Carlo simulations	0
Assessment of contour accuracy in head and neck replanning: Deep learning trained model compared with deformable image registration propagation technique	0
Dosimetric Effects of Dynamic Jaw Tracking and Collimator Angle Optimization in Non-Coplanar Cranial Arc Radiotherapy	0
The transition in practice to reduce bolus use in post-mastectomy radiotherapy: A dosimetric study of skin and subcutaneous tissue	0
A Comparison of Robustness of Volumetric Modulated Arc Therapy and Dynamic Conformal Arc Therapy for Lung Stereotactic Body Radiation Therapy	0
A novel lung SBRT treatment planning: Inverse VMAT plan with leaf motion limitation to ensure the irradiation reproducibility of a moving target	0
Feasibility Study of Stereotactic Radiosurgery Treatment of Glomus Jugulare Tumors via HyperArc VMAT	0
Evaluation of RayStation's delivered dose and accumulated dose features for spine stereotactic radiotherapy	0
Treatment of glioblastoma using MRIdian® A3i BrainTx™: Imaging and treatment workflow demonstration	0
Dosimetric effects of the leaf positioning error of the halcyon(2.0) dual-layer multileaf collimator (MLC) on the rectal cancer radiotherapy	0
Dosimetric comparison of utilizing saline or air-filled endorectal balloons in MR linac-based prostate SBRT	0
Intensity Modulated Proton Therapy Better Spares Non-Adjacent Organs and Reduces the Risk of Secondary Malignant Neoplasms in the Treatment of Sinonasal Cancers	0
Optimizing posterior neck coverage in regional nodal irradiation for breast cancer	0
Directed Journal Reading (DJR) Program, Summer 2024	0
Normal tissue exposure and second malignancy risk in vertebral-body-sparing craniospinal irradiation	0
Application of an automated dose accumulation workflow in high-risk prostate cancer - validation and dose-volume analysis between planned and delivered dose	0
DIBH reduces right coronary artery and lung radiation dose in right breast cancer loco-regional radiotherapy	0
Defining the role of intensity modulation in electron conformal therapy for the treatment of head and neck cancer	0
A method for adjusting MLC leaf positions outside a reference region for VMAT plans in a commercial treatment planning system	0
Directed Journal Reading (DJR) Program, Autumn 2024	0
A lung SBRT treatment planning technique to focus high dose on gross disease	0
Effects of axillary dose restriction on plan quality and acute radiation dermatitis in breast cancer radiotherapy	0
New Members List & Corporate Members List, Winter 2024	0
Assessment of HDR brachytherapy-replicating prostate radiotherapy planning for tomotherapy, cyberknife and VMAT	0
Delivery of a VMAT technique with flattening filter (FF) and flattening filter free (FFF) mode for whole breast irradiation with five fractions (FAST-Forward trial)	0
Proton pencil beam scanning craniospinal irradiation (CSI) with a single posterior brain beam: Dosimetry and efficiency	0
Dosimetric evaluation of target and peri-cavity by replacing CT values for cavities within the target in volumetric modulated arc therapy	0
Evaluation of patient-specific motion management for radiotherapy planning computed tomography using a statistical method	0
Evaluation of the applicability of the lattice radiotherapy technique at the National Cancer Institute - INCA	0
Plan quality and consistency in spine radiosurgery treatment planning: comparison between automatic treatment planning with Elements Spine SRS and manual inverse planning with Varian Eclipse	0
Enhancing precision in lacrimal sac tumor management through integration of multimodal imaging and intensity modulated proton therapy	0
Initial estimates of continuous positive airway pressure (CPAP) on heart volume, position and motion in patients receiving chest radiation	0
A generalized fit index for evaluating treatment plans of multiple target volumes with different prescribed dose: Generalized dose distribution fit index	0
Auto-delineation framework for the focal liver reaction observed in post Stereotactic Body Radiation Therapy (SBRT) Primovist MRI scans	0
Clinical application of an institutional fractionated stereotactic radiosurgery (FSRS) program for brain metastases delivered with MRIdianⓇ BrainTx™	0
Perceptions of burnout in medical dosimetry within a postpandemic work environment	0
Patient specific quality assurance of volumetric modulated arc therapy of synchronous bilateral breast cancer	0
A case study of radiotherapy treatment for Dupuytren's contracture and Ledderhose disease	0
Vertebral artery sparing volumetric modulated arc therapy in nasopharyngeal carcinoma	0
Validation of clearcalc for efficient patient specific QA	0
VMAT plan quality comparison between Clinac-iX and halcyon treatment delivery systems for nasopharyngeal carcinoma	0
Multiphases dose analysis of cardiac substructures using coronary CT angiography in postmastectomy radiotherapy	0
Analysis of potential time saving in brain arteriovenous malformation stereotactic radiosurgery planning using a new software platform	0
Clinical target volume segmentation based on gross tumor volume using deep learning for head and neck cancer treatment	0
Editorial for the proton therapy special issue	0
Quality rectal hydrogel placement allows for gel-enabled dose-escalated EBRT (GEDE-EBRT) without rectal interference in prostate cancer	0
Scripting a planning avoidance structure to perform simultaneous integrated boost breast on Halcyon linear accelerators	0
Technical Report: Efficient constancy evaluation of the Eclipse treatment planning system's photon and electron dose calculation algorithms aided by the third-party ClearCheck software	0
Dosimetric advantages of volumetric modulated arc therapy (VMAT) with deep inspiration breath hold (DIBH) technique in Halcyon Linac for left breast cancer treatment	0
Standardized review criteria improve the efficiency of verification CT workflows in adaptive proton therapy for head-and-neck cancers	0
Postoperative radiotherapy for right breast cancer with regional nodal irradiation utilizing the surface-guided radiotherapy based deep inspiration breath hold technique on a TrueBeam HD linear accele	0
Feasibility-guided automated planning for stereotactic treatments of prostate cancer	0
Plan complexity metrics for head and neck VMAT competition plans	0
Dynamic hybrid-phase computed tomography simulation in lung stereotactic body radiotherapy: A feasibility study	0
Dosimetric assessment of the mono and dual-isocentric VMAT technique based on flattening filter-free beams for SBRT with non-contiguous spinal targets	0
Improvement of target coverage using automated non-coplanar volumetric modulated arc therapy planning in stereotactic radiotherapy for cervical metastatic spinal tumors	0
Dosimetric superiority of deep inspiration breath hold-proton beam therapy for cardiac metastasis	0
Radiation Oncology Peer Review in a Community Setting: The Value of Prospective Review	0
Directed Journal Reading (DJR) Program, Spring 2024	0
Dosimetry implications of VMAT delivery angles and intra-fraction motion for SBRT prostate treatments	0
Does extending the body contour into air enhance surface dose calculation accuracy?	0
Tubarial salivary gland sparing with proton therapy	0