Search results for "Focal spot"

showing 2 items of 2 documents

Clinical microbeam radiation therapy with a compact source: specifications of the line-focus X-ray tube

2020

Highlights • Line-focus X-ray tubes are suitable for clinical microbeam radiation therapy (MRT). • A modular high-voltage supply safely enables high electron beam powers. • An electron accelerator was designed to generate an eccentric focal spot. • We simulated a peak-to-valley dose ratio above 20 for single-field MRT. • Microbeam arc therapy spares healthy brain tissue compared to single-field MRT.

Equivalent uniform doselcsh:Medical physics. Medical radiology. Nuclear medicineMaterials scienceCompact radiation sourcelcsh:R895-920Monte Carlo methodElectronlcsh:RC254-282030218 nuclear medicine & medical imaginglaw.inventionCompact Radiation Source ; Equivalent Uniform Dose ; Line-focus X-ray Tube ; Microbeam Arc Therapy ; Microbeam Radiation Therapy ; Modular High-voltage Supply03 medical and health sciences0302 clinical medicineOpticslawRadiology Nuclear Medicine and imagingFocal Spot SizeOriginal Research ArticleLine-focus X-ray tubeRange (particle radiation)Radiationbusiness.industryMicrobeam arc therapyMicrobeamHot cathodeModular high-voltage supplyX-ray tubeequipment and supplieslcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens030220 oncology & carcinogenesisCathode raybusinessMicrobeam radiation therapyPhysics and Imaging in Radiation Oncology
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A New Statistical Reconstruction Method for the Computed Tomography Using an X-Ray Tube with Flying Focal Spot

2021

Abstract This paper presents a new image reconstruction method for spiral cone- beam tomography scanners in which an X-ray tube with a flying focal spot is used. The method is based on principles related to the statistical model-based iterative reconstruction (MBIR) methodology. The proposed approach is a continuous-to-continuous data model approach, and the forward model is formulated as a shift-invariant system. This allows for avoiding a nutating reconstruction-based approach, e.g. the advanced single slice rebinning methodology (ASSR) that is usually applied in computed tomography (CT) scanners with X-ray tubes with a flying focal spot. In turn, the proposed approach allows for signific…

Materials sciencemedicine.diagnostic_testbusiness.industryComputed tomographyX-ray tubeReconstruction methodlaw.inventionOpticsArtificial IntelligenceHardware and ArchitecturelawModeling and SimulationFocal spotmedicineComputer Vision and Pattern RecognitionbusinessInformation SystemsJournal of Artificial Intelligence and Soft Computing Research
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