Browsing by Author "Ria, Francesco"
Now showing items 1-16 of 16
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A comparison of COVID-19 and imaging radiation risk in clinical patient populations.
(J Radiol Prot, 2020-10-07)OBJECTIVE: The outbreak of coronavirus SARS-COV2 affected more than 180 countries necessitating fast and accurate diagnostic tools. Reverse transcriptase polymerase chain reaction (RT-PCR) has been identified as a gold standard ... -
A database of 40 patient-based computational models for benchmarking organ dose estimates in CT.
(Medical physics, 2020-07-06)PURPOSE:Patient radiation burden in CT can best be characterized through risk estimates derived from organ doses. Organ doses can be estimated by Monte Carlo simulations of the CT procedures on computational phantoms assumed ... -
Clinical Decision Making in CT: Risk Assessment Comparison Across 12 Risk Metrics in Patient Populations
(Journal of Medical Physics, 2020-06-30)Purpose The Medical Physics 3.0 initiative aims to enhance direct physicist involvement in clinical decision making to improve patient care. In this involvement, it is crucial to achieve effective and patient-specific radiation ... -
Expanding the Concept of Diagnostic Reference Levels to Noise and Dose Reference Levels in CT.
(AJR. American journal of roentgenology, 2019-06-10)OBJECTIVE. Diagnostic reference levels were developed as guidance for radiation dose in medical imaging and, by inference, diagnostic quality. The objective of this work was to expand the concept of diagnostic reference ... -
Image noise and dose performance across a clinical population: patient size adaptation as a metric of CT performance.
(Med Phys, 2017-02-24)PURPOSE: Modern CT systems adjust x-ray flux accommodating for patient size to achieve certain image noise values. The effectiveness of this adaptation is an important aspect of CT performance and should ideally be characterized ... -
Justification of radiological procedures in COVID-19 pandemic based on radiation risk only
(2020-12-02)Purpose. Radiologic procedures are recommended based on benefit-to-risk justification. In X-ray imaging, while the benefit is often immediate for the patient, the associated radiation burden risk is a longer-term effect. ... -
Modeling Patient-Informed Liver Contrast Perfusion in Contrast-enhanced Computed Tomography.
(J Comput Assist Tomogr, 2020-11)OBJECTIVE: To determine the correlation between patient attributes and contrast enhancement in liver parenchyma and demonstrate the potential for patient-informed prediction and optimization of contrast enhancement in liver ... -
Organ doses from CT localizer radiographs: Development, validation, and application of a Monte Carlo estimation technique
(MEDICAL PHYSICS, 2019-11-01) -
Organ Doses from CT Localizer Radiographs: Development, Validation, and Application of a Monte Carlo Estimation Technique.
(Medical physics, 2019-08-23)PURPOSE:The purpose of this study was to simulate and validate organ doses from different CT localizer radiograph geometries using Monte Carlo methods for a population of patients. METHODS:A Monte Carlo method was developed ... -
Risk assessment and economic impact analysis of the implementation of new European legislation on radiopharmaceuticals in Italy: the case of the new monograph chapter Compounding of Radiopharmaceuticals (PHARMEUROPA, Vol. 23, No. 4, October 2011).
(Curr Radiopharm, 2013-12)An assessment of the new monograph chapter Compounding of Radiopharmaceuticals has been conducted on the basis of the first period of implementation of Italian legislation on Good Radiopharmaceuticals Practice (NBP) in the ... -
Scientific Abstracts and Sessions
(Medical Physics, 2020-06)Purpose Image quality estimation in CT is crucial for technology assessment, procedure optimization, and overall radiological benefit evaluation, with noise magnitude playing a key role. Over the years, several methods have ... -
Technical Note: Validation of TG 233 phantom methodology to characterize noise and dose in patient CT data.
(Med Phys, 2020-02-10)PURPOSE: Phantoms are useful tools in diagnostic CT, but practical limitations reduce phantoms to being only a limited patient surrogate. Furthermore, a phantom with a single cross sectional area cannot be used to evaluate ... -
Total risk index: a mathematical model for decision making based on clinical and radiation risk assessment in CT
(2019-12-04)Purpose. Radiological risk is a combination of radiation and clinical risk (likelihood of not delivering a proper diagnosis), which together may be characterized as a total risk index (TRI). While many strategies have been ... -
Validation of algorithmic CT image quality metrics with preferences of radiologists
(MEDICAL PHYSICS, 2019-11-01) -
Validation of Algorithmic CT Image Quality Metrics with Preferences of Radiologists.
(Medical physics, 2019-08-29)PURPOSE:Automated assessment of perceptual image quality on clinical Computed Tomography (CT) data by computer algorithms has the potential to greatly facilitate data-driven monitoring and optimization of CT image acquisition ...
