Results 131 to 140 of about 51,447 (275)

Clinical implementation of a multifaceted quality assurance phantom for high-precision radiation therapy: an institutional experience

open access: yesJournal of the Egyptian National Cancer Institute
Aim This study aimed to evaluate the multifaceted clinical utility of the RUBY phantom as a comprehensive quality assurance (QA) platform in high-precision radiotherapy, particularly for stereotactic radiosurgery (SRS) and stereotactic radiotherapy (SRT).
Sandeep Singh   +8 more
doaj   +1 more source

Proposed Diagnostic Reference Levels for Frequently Performed Paediatric Radiographic Examinations

open access: yesJournal of Medical Radiation Sciences, EarlyView.
Paediatric diagnostic reference levels (DRLs) are weight‐stratified dose levels for typical medical imaging examinations for broadly defined types of equipment. The 75th percentiles of the FRLs across the nine X‐ray units from five centres in Australia were calculated as the proposed Local DRLs (LDRLs).
Edel Doyle   +4 more
wiley   +1 more source

Long‐Term Cost Utility Analysis of Endoscopic Sinus Surgery: Analysis of 5‐Year Outcomes

open access: yesThe Laryngoscope, EarlyView.
This study utilizes a cohort‐style Markov decision tree economic model to evaluate the long‐term (5‐year) cost‐effectiveness of endoscopic sinus surgery versus medical management for patients with chronic rhinosinusitis. The results show that the endoscopic sinus surgery strategy cost more ($63,296.27) but yielded increased quality‐adjusted life years (
Dara R. Adams   +5 more
wiley   +1 more source

Commissioning and clinical implementation of an Autoencoder based Classification-Regression model for VMAT patient-specific QA in a multi-institution scenario. [PDF]

open access: yesRadiother Oncol, 2021
Yang R   +12 more
europepmc   +1 more source

Quantitative Assessment of Visible Nigrosome‐1 in Patients with Parkinson's Disease

open access: yesMovement Disorders Clinical Practice, EarlyView.
Abstract Background The nigrosome‐1 (N1) sign on susceptibility‐weighted imaging (SWI) typically disappears in Parkinson's disease (PD), though some patients can show uni−/bilaterally preserved N1. Objective Investigating whether visible nigrosomes in PD patients differ from those of healthy subjects (HC). Methods Forty‐eight PD and 35 HC underwent 3 T‐
Maria Eugenia Caligiuri   +10 more
wiley   +1 more source

Optimizing a Quality Control Procedure for Intensity Modulated Radiation Therapy

open access: yesNucleus, 2016
A patient-specific quality assurance (QA) program to carry out the dosimetric verification of the intensity modulated radiation therapy (IMRT) was optimized at the Department of Radiotherapy at the Institute of Oncology and Radiobiology, belonging to ...
Eduardo F. Larrinaga Cortina   +2 more
doaj  

Altered Cerebrospinal Fluid Tryptophan–Kynurenine Pathway Metabolism in Multiple System Atrophy

open access: yesMovement Disorders, EarlyView.
Abstract Background Alterations in tryptophan–kynurenine (TRP‐KYN) metabolism, which is associated with neuroinflammation, remain unclear in multiple system atrophy (MSA). Objective The aim was to investigate cerebrospinal fluid (CSF) TRP metabolites in MSA and their associations with other biomarkers.
Ryunosuke Nagao   +8 more
wiley   +1 more source

Engineering Dosimetric Excellence In Total Body Irradiation: Tomotherapy‐Driven Protocols for Precision and Reproducibility

open access: yesPrecision Radiation Oncology, EarlyView.
• Objective: Assess helical Tomotherapy‐based TBI for clinical feasibility, dosimetric reproducibility, and in‐vivo accuracy using dual‐orientation simulation and patient‐specific QA. • Methodology: Implementation of ArcCHECK 3D diode array, ionization chamber verification, and in‐vivo dosimetry with OSLDs at 16 anatomical sites to ensure precise dose ...
Sandeep Singh   +8 more
wiley   +1 more source

Models for quality improvement and assurance in English and Welsh primary care [PDF]

open access: yes, 2007
Degeling   +14 more
core   +1 more source

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