A5087884206- Advanced Radiotherapy Techniques
- Radiation Therapy and Dosimetry
- Medical Imaging Techniques and Applications
- Metallurgy and Material Forming
- Radiation Detection and Scintillator Technologies
- Microstructure and Mechanical Properties of Steels
- Advanced machining processes and optimization
- Cancer Treatment and Pharmacology
- Radiation Effects and Dosimetry
- Lung Cancer Diagnosis and Treatment
- Radiation Dose and Imaging
- Nuclear Physics and Applications
- Metallurgical Processes and Thermodynamics
- Iterative Learning Control Systems
- Cardiac pacing and defibrillation studies
- Nuclear reactor physics and engineering
- Lung Cancer Treatments and Mutations
- Radiomics and Machine Learning in Medical Imaging
- Radiation Effects in Electronics
- Effects of Radiation Exposure
- Lung Cancer Research Studies
- Laser and Thermal Forming Techniques
- Luminescence Properties of Advanced Materials
- Neutropenia and Cancer Infections
- Ultrasound and Hyperthermia Applications
University of Science and Technology Beijing
2022-2023
Memorial Sloan Kettering Cancer Center
2008-2023
Data visualization technique was applied to analyze the daily QA results of photon and electron beams. Special attention paid any trend beams might display. A Varian Trilogy Linac equipped with dual energies five commissioned in early 2010. Daily tests including output constancy, beam flatness symmetry (radial transverse directions) were performed an ionization chamber array device (QA Beam Checker Plus, Standard Imaging). The data years collected analyzed. For each energy, measured exported...
Recent studies have demonstrated that per-beam planar intensity-modulated radiation therapy (IMRT) quality assurance (QA) passing rates may not predict clinically relevant patient dose errors. This work is to evaluate the effect of variations introduced in dynamic multi-leaf collimator (DMLC) modeling and delivery processes on metrics for IMRT. Ten head neck (HN) IMRT plans were randomly selected this study. The conventional QA was performed each plan by 2 different methods: (1) with gantry...
Highly accurate bending force presetting is a prerequisite to ensure the well flatness of strip head, however, there are limitations in preset model used industrial sites. According control characteristics work roll and intermediate forces, this paper integrates historical production data 1420 mm 6-high tandem cold rolling mill establishes chain based on symbolic regression, which implements with age-layered population structure genetic programming (ALPS-GPSR). The advantage regression...
Flatness is a vital quality index that determines the dimensional accuracy of cold-rolled strip. This paper designs local shape wave extraction algorithm and fuzzy classification for overall flatness defect based on cosine distance. By introducing small displacement buckling theory thin plates, plate stress model waves studied, critical elongation difference under given conditions are obtained. Finally, using multi-objective decision-making evaluation method, comprehensive established. The...
Purpose: To evaluate the measured dose distributions using radiochromic EBT2 films for small fields in iPlan (BrainLab) commissioning. Methods: Radiochromic were irradiated with 6 MV photons on a Varian Trilogy linac polystyrene phantoms. The measurements included profiles and depth doses field sizes of 1 × 1, 2 2, 3 3, 4 4, 10 cm2 etc. profile taken at 5 cm. calibration dmax(1.4 cm) up to Gy. Films scanned an Epson 10,000 XL flatbed scanner 72 dpi resolution. Pixel values converted...
In this study, we verified the treatment planning calculations of skin doses with incorporation bolus effect due to intervening alpha-cradle (AC) and carbon fiber couch (CFC) using radiochromic EBT2 films. A polystyrene phantom (25 × 25 15 cm(3)) six films separated by slabs, at depths 0, 0.1, 0.2, 0.5, 1, 1.4 cm, was positioned above an AC, which ~1 cm thick. The AC assembly were CT scanned CT-images transferred system (TPS) for in three scenarios: (A) ignoring CFC, (B) accounting only, (C)...
4608 Background: D is registered for the treatment of MPC at a dose 75mg/m2 once every 3 wks with daily low-dose prednisone (LDP). Standard involves androgen-ablation (AA) therapy as maintenance therapy. Grade 3/4 neutropenia occurs in 32% patients (pts) MPC, which approximately one-half that lung cancer pts receiving monotherapy 75mg/m2. The objective was to evaluate clearance (CL) presence AA compared cycling testosterone (T) MPC. Methods: Twenty were treated 25–35 mg/m2 (N=16) or 75 (N=4)...
Abstract The performance of a linear accelerator (Linac) depends on the integrity its x-ray target. sudden failure target not only breaks down Linac but also could contribute significant disruptions to patient care. This work is develop predicative quality assurance (QA) method using Statistical Process Control (SPC) and AutoRegressive Integrated Moving Average (ARIMA) modeling identify risk before it occurs. In past years, we observed two incidents among our Linacs. Retrospectively,...