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A structural analytic method on the phase space data of Linac 4 MV photons based on the real world

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 82 ()

Purpose: It was given that the characteristics of the fluence distribution and the energy spectrum structure of 4MV photons on the Phase Space (PhSp) ......

The status of medical physics in radiotherapy in China

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 85 ()

Purpose: To present an overview of the status of medical physics in radiotherapy in China, including facilities and devices, occupation, education, re......

A review of antenna designs for percutaneous microwave ablation

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 84 ()

Microwave (MW) antenna is a key element in microwave ablation (MWA) treatments as the means that energy is delivered in a focused manner to the tumor ......

Intercomparison of Monte Carlo calculated dose enhancement ratios for gold nanoparticles irradiated by X-rays: Assessing the uncertainty and correct methodology for extended beams

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 84 ()

Results of a Monte Carlo code intercomparison exercise for simulations of the dose enhancement from a gold nanoparticle (GNP) irradiated by X-rays hav......

Comparison of DCE-MRI of murine model cancers with a low dose and high dose of contrast agent

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 81 ()

There are increasing concerns regarding intracellular accumulation of gadolinium (Gd) after multiple dynamic contrast enhanced (DCE) MRI scans. We inv......

A patient risk model to determine the optimal output constancy check frequency for a radiotherapy machine

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 84 ()

Purpose: The output constancy check, a basic quality control (QC) item for radiotherapy machines, is performed daily according to suggestions in techn......

Left ventricle motion estimation for cine MR images using sparse representation with shape constraint

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 87 ()

Purpose: To propose a left ventricle (LV) motion estimation method based on sparse representation, in order to handle the spatial-varying intensity di......

Define dose field to assess the modulation complexity of intensity-modulated radiation therapy

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 87 ()

Purpose: Introduce a new concept of dose field to assess the modulation complexity (MC) of intensity-modulated radiation therapy (IMRT) . Methods: A t......

Motion management with variable cycle-based respiratory guidance method for carbon-ion pencil beam scanning treatment

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2021; 87 ()

Purpose: A novel variable cycle-based respiratory guidance method was proposed to synchronize the patterns between patients' breathing and the magneti......

A quantitative evaluation of deformable image registration based on MV cone beam CT images: Impact of deformation magnitudes and image modalities

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2020; 71 ()

Background and purpose: To evaluate the impact of deformation magnitude and image modality on deformable-image-registration (DIR) accuracy using Halcy......

Improving the accuracy of converting dose to medium to dose to water algorithms in small megavoltage photon fields in dose to medium based treatment planning systems

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2020; 71 ()

Purpose: To present a formalism to improve the accuracy of converting absorbed dose to medium in medium (D-m) to absorbed dose to water in medium (D-w......

Halcyon clinical performance evaluation: A log file-based study in comparison with a C-arm Linac

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2020; 71 ()

Purpose: The aim of this study is to compare the dosimetric and mechanical accuracy of Volumetric Modulation Arc Therapy (VMAT) delivery on the Halcyo......

Design and optimization of beam optics for a superconducting gantry applied to proton therapy

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2020; 73 ()

Purpose: Proton therapy (PT) is a precise and effective radiotherapy method for tumors. To reduce the weight and footprint of normal conducing gantrie......

A CT-guided robotic needle puncture method for lung tumours with respiratory motion

期刊: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 2020; 73 ()

Purpose: Percutaneous interventions rely on needle puncture to deliver medical devices into lesions. For lung tumours, respiratory motion makes effect......

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