Alessandro Arduino
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View article: Linking dielectric dispersion and age in brain tissues via water content-based Electric Properties Tomography
Linking dielectric dispersion and age in brain tissues via water content-based Electric Properties Tomography Open
Popular dielectric dispersion models of biological tissues, which describe dielectric properties as a function of frequency, do not account for age-related variations. In particular, existing databases have limited validity in pediatric po…
View article: Dynamics of conductive nonmagnetic objects in presence of the Lenz effect
Dynamics of conductive nonmagnetic objects in presence of the Lenz effect Open
Purpose: To model and predict the dynamics of conductive nonmagnetic objects within the MRI room under the influence of Lenz effect. Methods: The dynamics are described by an ordinary differential equation and the Lenz effect approximated …
View article: Very-low-field MRI scanners: from the ideal to the real permanent magnet array
Very-low-field MRI scanners: from the ideal to the real permanent magnet array Open
Very-low-field MRIs are becoming increasingly popular due to their portability and adaptability to different environments. They are being successfully used for various clinical applications, leading to a paradigm shift in the way imaging c…
View article: Impact of simultaneous exposure to RF and gradient electromagnetic fields on implant MR safety labeling
Impact of simultaneous exposure to RF and gradient electromagnetic fields on implant MR safety labeling Open
Purpose To investigate whether heating contributions produced by radiofrequency (RF) and gradient fields superpose sufficiently at the worst‐case locations to justify their simultaneous consideration in magnetic resonance imaging (MRI) imp…
View article: Construction of Phantoms for <scp>MR</scp> Electrical Properties Tomography (From Structure to Composition): A Guideline From the <scp>ISMRM</scp> Electro‐Magnetic Tissue Properties Study Group
Construction of Phantoms for <span>MR</span> Electrical Properties Tomography (From Structure to Composition): A Guideline From the <span>ISMRM</span> Electro‐Magnetic Tissue Properties Study Group Open
View article: 3D–1D modelling of cranial mesh heating induced by low or medium frequency magnetic fields
3D–1D modelling of cranial mesh heating induced by low or medium frequency magnetic fields Open
The proposed method leads to improved results with respect to previous approximations by modelling the thermal diffusion through the highly conductive metallic implants without affecting the anatomical human model discretization based on v…
View article: Feasibility study of subject‐specific, brain specific‐absorption‐rate maps retrieved from <scp>MRI</scp> data
Feasibility study of subject‐specific, brain specific‐absorption‐rate maps retrieved from <span>MRI</span> data Open
Introduction Specific absorption rate (SAR) is crucial for monitoring radiofrequency power absorption during MRI. Although local SAR distribution is usually calculated through numerical simulations, they are impractical during exams, limit…
View article: Erratum: Polynomial chaos expansion of SAR and temperature increase variability in 3 T MRI due to stochastic input data (2024 <i>Phys. Med. Biol.</i> 69 125005)
Erratum: Polynomial chaos expansion of SAR and temperature increase variability in 3 T MRI due to stochastic input data (2024 <i>Phys. Med. Biol.</i> 69 125005) Open
View article: Safety Assessment of Microwave Breast Imaging: Heating Analysis on Digital Breast Phantoms
Safety Assessment of Microwave Breast Imaging: Heating Analysis on Digital Breast Phantoms Open
The impact of breast cancer on public health is serious, and due to risk/benefit assessment, screening programs are usually restricted to women older than 49 years. Microwave imaging devices offer advantages such as non-ionizing radiation,…
View article: Very-low-field MRI scanners: from the ideal to the real permanent magnet array
Very-low-field MRI scanners: from the ideal to the real permanent magnet array Open
View article: Magnetic Resonance-Based Electric Properties Tomography via Green’s Integral Identity
Magnetic Resonance-Based Electric Properties Tomography via Green’s Integral Identity Open
A new approach to Magnetic Resonance-based Electric Properties Tomography (EPT) is presented. The method applies Green’s integral identity to the equation that regulates the EPT problem. The resultant integral equations are used to impose …
View article: PS08.10 DEVELOPMENT OF AN ANTHROPOMORPHIC BRAIN PHANTOM FOR MAGNETIC RESONANCE-BASED ELECTRIC PROPERTIES TOMOGRAPHY
PS08.10 DEVELOPMENT OF AN ANTHROPOMORPHIC BRAIN PHANTOM FOR MAGNETIC RESONANCE-BASED ELECTRIC PROPERTIES TOMOGRAPHY Open
View article: Gradient‐induced vibrations and motion‐induced Lenz effects on conductive nonmagnetic orthopedic implants in <scp>MRI</scp>
Gradient‐induced vibrations and motion‐induced Lenz effects on conductive nonmagnetic orthopedic implants in <span>MRI</span> Open
Purpose To quantify the extent of gradient‐induced vibrations, and the magnitude of motion‐induced displacement forces (“Lenz effect”), in conductive nonmagnetic orthopedic prostheses. Methods The investigation is carried out through numer…
View article: Polynomial chaos expansion of SAR and temperature increase variability in 3 T MRI due to stochastic input data
Polynomial chaos expansion of SAR and temperature increase variability in 3 T MRI due to stochastic input data Open
Objective. Numerical simulations are largely adopted to estimate dosimetric quantities, e.g. specific absorption rate (SAR) and temperature increase, in tissues to assess the patient exposure to the radiofrequency (RF) field generated duri…
View article: EMPIR project 17IND01 MIMAS (Medical Implant Manufacturrers' Safety Procedures): Deliverable D07
EMPIR project 17IND01 MIMAS (Medical Implant Manufacturrers' Safety Procedures): Deliverable D07 Open
View article: Orthopedic implants affect the electric field induced by switching gradients in <scp>MRI</scp>
Orthopedic implants affect the electric field induced by switching gradients in <span>MRI</span> Open
Purpose To investigate whether the risk of peripheral nerve stimulation increases in the presence of bulky metallic prostheses implanted in a patient's body. Methods A computational tool was used to calculate the electric field (E‐field) i…
View article: Fast high‐resolution electric properties tomography using three‐dimensional quantitative transient‐state imaging‐based water fraction estimation
Fast high‐resolution electric properties tomography using three‐dimensional quantitative transient‐state imaging‐based water fraction estimation Open
In this study, we aimed to develop a fast and robust high‐resolution technique for clinically feasible electrical properties tomography based on water content maps (wEPT) using Quantitative Transient‐state Imaging (QTI), a multiparametric …
View article: Biomechanics of Chondrocytes and Chondrons in Healthy Conditions and Osteoarthritis: A Review of the Mechanical Characterisations at the Microscale
Biomechanics of Chondrocytes and Chondrons in Healthy Conditions and Osteoarthritis: A Review of the Mechanical Characterisations at the Microscale Open
Biomechanical studies are expanding across a variety of fields, from biomedicine to biomedical engineering. From the molecular to the system level, mechanical stimuli are crucial regulators of the development of organs and tissues, their g…
View article: Efficient prediction of MRI gradient‐induced heating for guiding safety testing of conductive implants
Efficient prediction of MRI gradient‐induced heating for guiding safety testing of conductive implants Open
Purpose To propose an efficient numerical method to predict the temperature increase of an implantable medical device induced by any linearly polarized homogeneous magnetic field, according to the ISO 10974 methodology for testing of gradi…
View article: Metrological contributions to magnetic resonance-based electric properties tomography
Metrological contributions to magnetic resonance-based electric properties tomography Open
Magnetic resonance-based electric properties tomography (EPT) is a quantitative imaging technique that, starting from acquisitions performed with a magnetic resonance scanner, aims at producing a map of the distribution of the electric pro…
View article: Repeatability and Reproducibility Uncertainty in Magnetic Resonance-Based Electric Properties Tomography of a Homogeneous Phantom
Repeatability and Reproducibility Uncertainty in Magnetic Resonance-Based Electric Properties Tomography of a Homogeneous Phantom Open
Uncertainty assessment is a fundamental step in quantitative magnetic resonance imaging because it makes comparable, in a strict metrological sense, the results of different scans, for example during a longitudinal study. Magnetic resonanc…
View article: Evaluation and Correction of $B_{1}^+$-Based Brain Subject-Specific SAR Maps Using Electrical Properties Tomography
Evaluation and Correction of $B_{1}^+$-Based Brain Subject-Specific SAR Maps Using Electrical Properties Tomography Open
The specific absorption rate (SAR) estimates the amount of power absorbed by the tissue and is determined by the electrical conductivity and the E-field. Conductivity can be estimated using Electric Properties Tomography (EPT) but only the…
View article: Simplified modeling of implanted medical devices with metallic filamentary closed loops exposed to low or medium frequency magnetic fields
Simplified modeling of implanted medical devices with metallic filamentary closed loops exposed to low or medium frequency magnetic fields Open
View article: Computational dosimetry in MRI in presence of hip, knee or shoulder implants: do we need accurate surgery models?
Computational dosimetry in MRI in presence of hip, knee or shoulder implants: do we need accurate surgery models? Open
Objective. To quantify the effects of different levels of realism in the description of the anatomy around hip, knee or shoulder implants when simulating, numerically, radiofrequency and gradient-induced heating in magnetic resonance imagi…
View article: Heating of metallic biliary stents during magnetic hyperthermia of patients with pancreatic ductal adenocarcinoma: an <i>in silico</i> study
Heating of metallic biliary stents during magnetic hyperthermia of patients with pancreatic ductal adenocarcinoma: an <i>in silico</i> study Open
The safety of patients with pancreatic cancer wearing metallic biliary stents during magnetic hyperthermia treatments cannot be fully assured under the most common treatment parameters.
View article: Classification Scheme of Heating Risk during MRI Scans on Patients with Orthopaedic Prostheses
Classification Scheme of Heating Risk during MRI Scans on Patients with Orthopaedic Prostheses Open
Due to the large variety of possible clinical scenarios, a reliable heating-risk assessment is not straightforward when patients with arthroplasty undergo MRI scans. This paper proposes a simple procedure to estimate the thermal effects in…
View article: A Continuum-Tensegrity Computational Model for Chondrocyte Biomechanics in AFM Indentation and Micropipette Aspiration
A Continuum-Tensegrity Computational Model for Chondrocyte Biomechanics in AFM Indentation and Micropipette Aspiration Open
View article: A contribution to MRI safety testing related to gradient-induced heating of medical devices
A contribution to MRI safety testing related to gradient-induced heating of medical devices Open
Purpose: To investigate theoretically the feasibility of a novel procedure for testing the MRI gradient-induced heating of medical devices and translating the results into clinical practice. Methods: The c…
View article: A contribution to <scp>MRI</scp> safety testing related to gradient‐induced heating of medical devices
A contribution to <span>MRI</span> safety testing related to gradient‐induced heating of medical devices Open
Purpose To theoretically investigate the feasibility of a novel procedure for testing the MRI gradient‐induced heating of medical devices and translating the results into clinical practice. Methods The concept of index of stress is introdu…
View article: Efficient Modelling of Implanted Medical Devices with Metallic Filamentary Loops Exposed to Low or Medium Frequency Magnetic Fields
Efficient Modelling of Implanted Medical Devices with Metallic Filamentary Loops Exposed to Low or Medium Frequency Magnetic Fields Open