Search results for "Plane orientation"

showing 2 items of 2 documents

Transcranial magnetic resonance imaging-guided focused ultrasound treatment at 1.5 T: a retrospective study on treatment and patient-related paramete…

2020

Objective: To present a retrospective analysis of patient- and sonication-related parameters of a group of patients treated with a transcranial magnetic resonance imaging (MRI)-guided focused ultrasound (tcMRgFUS) system integrated with a 1.5-T MRI unit. Methods: The data obtained from 59 patients, who underwent the tcMRgFUS procedure from January 2015 to April 2019, were retrospectively reviewed for this study. The following data, among others, were mainly collected: skull density ratio (SDR), skull area (SA), number of available transducer elements (Tx), and estimated focal power at target (FP). For each of the four different treatment stages, we calculated the number of sonication proces…

Interventional magnetic resonance imagingMaterials Science (miscellaneous)medicine.medical_treatmentParkinson's diseaseEssential TremorBiophysicsGeneral Physics and Astronomy01 natural sciencesFocused ultrasound0103 physical sciencesmedicinePlane orientationInterventional Magnetic Resonance ImagingPhysical and Theoretical Chemistry010306 general physicsMathematical Physicsmedicine.diagnostic_testbusiness.industryThalamotomySettore MED/27 - NeurochirurgiaSettore MED/37 - NeuroradiologiaMagnetic resonance imagingRetrospective cohort studystereotaxic techniqueslcsh:QC1-999Settore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Parkinson Disease.essential tremor; high-intensity focused ultrasound ablation; interventional magnetic resonance imaging; Parkinson's disease; stereotaxic techniquesCoronal planeStereotaxic techniqueHigh-Intensity Focused Ultrasound AblationStereotaxic TechniqueSettore MED/26 - NeurologiaNuclear medicinebusinessSettore MED/36 - Diagnostica Per Immagini E Radioterapialcsh:Physics
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Critical and Fracture Planes of 18G2A Steel Under Nonproportional Combined Bending and Torsion

2008

Many multiaxial fatigue failure criteria of materials are based on the critical plane approach [1, 2, 3]. In these criteria, it is assumed that the fatigue failure of material is caused by stresses and/or strains acting in one plane (called critical) within the material. The proper orientation of that plane in fatigue failure criteria based on the critical plane concept must be established for fatigue life calculation. In the paper the damage accumulation method was used to determine the critical plane orientations. In this method, the critical plane is the plane where the maximum damage degree, computed according to the selected fatigue failure criterion, is the highest. The critical plane…

Materials sciencebusiness.industryPlane orientationFatigue testingTorsion (mechanics)Structural engineeringFracture planebusiness
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