Article
Radiology, Nuclear Medicine & Medical Imaging
Wei Hu, Ran Guo, Qingyan Wang, Jianfeng Zheng, Jeffrey Tsang, Wolfgang Kainz, Stuart Long, Ji Chen
Summary: This paper evaluates the RF-induced heating for an AIMD with dual parallel leads, studying the coupling effects between the leads through simulations and experiments. The global transfer function technique is used to assess the RF-induced heating for dual-lead AIMDs inside different human body models.
MAGNETIC RESONANCE IN MEDICINE
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Aiping Yao, Tolga Goren, Theodoros Samaras, Niels Kuster, Wolfgang Kainz
Summary: This study evaluates the potential additional risks of broken and abandoned leads in RF-induced heating of AIMD during MR examinations. Results show that the enhancement of deposited lead-tip power for broken leads compared to intact leads can be significantly higher in different scenarios. Presence of nearby intact or broken wires can reduce this enhancement factor, highlighting the importance of considering lead design and clinical routing when assessing risks for MR examinations.
MAGNETIC RESONANCE IN MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Aiping Yao, Tolga Goren, Theodoros Samaras, Niels Kuster, Wolfgang Kainz
Summary: This study evaluated the additional risks of broken and abandoned leads during MR examinations, with a focus on the impact of wire breaks on in vivo lead-tip power. Results showed a significant enhancement of deposited lead-tip power for broken leads compared to intact leads, reaching up to 16-fold in realistic clinical exposures. The presence of nearby intact or broken wires reduced this enhancement factor to less than 7-fold over the intact lead.
MAGNETIC RESONANCE IN MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Eugenio Mattei, F. Censi, G. Calcagnini, E. Lucano, L. M. Angelone
Summary: A variation of classic techniques for estimating the transfer function of real pacemaker leads was proposed and validated. The method was shown to be influenced by the lead trajectory when estimating the transfer function.
MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE
(2021)
Article
Physics, Multidisciplinary
F. Chu, A. L. LaJoie, B. D. Keenan, L. Webster, S. J. Langendorf, M. A. Gilmore
Summary: Collisional plasma shocks generated from supersonic flows are an important feature in many astrophysical and laboratory high-energy-density plasmas. Plasma shock fronts with multiple ion species contain additional structure, including interspecies ion separation driven by gradients in species concentration, temperature, pressure, and electric potential. Time-resolved density and temperature measurements of two ion species in collisional plasma shocks produced by head-on merging of supersonic plasma jets provide the first experimental validation of the fundamental inter-ion-species transport theory. The temperature separation, a higher-order effect reported here, is valuable for advancements in modeling HED and ICF experiments.
PHYSICAL REVIEW LETTERS
(2023)
Article
Engineering, Biomedical
J. Wooldridge, A. Arduino, L. Zilberti, U. Zanovello, M. Chiampi, V Clementi, O. Bottauscio
Summary: This study assessed clinically relevant factors causing tissue heating through parametric studies, discussing simulations of RF and GC fields and highlighting the highest heating levels in GC fields for large volume implants and large plate areas, and in RF fields driven by the 'antenna effect' in thin, resonant length implants.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Plant Sciences
Felix de Carpentier, Alexandre Maes, Christophe H. Marchand, Celine Chung, Cyrielle Durand, Pierre Crozet, Stephane D. Lemaire, Antoine Danon
Summary: The discovery of regulators involved in the formation of multicellular aggregates in response to abiotic stress in the single-celled alga Chlamydomonas reinhardtii highlights a new survival strategy for unicellular organisms.
Article
Engineering, Multidisciplinary
Syed Shabhi Haider, Justyna Barzowska, Piotr Sybilski, Andrzej Suchocki
Summary: An alternative approach has been adopted to construct low-cost laboratory equipment for measuring the mechanical impact-induced mechanoluminescence properties of materials. The setup allows for the study of the correlation between kinetic energy loss during impact and the intensity of the resulting mechanoluminescence. The apparatus is also useful for analyzing the mechanism of mechanoluminescence and persistent luminescence.
Article
Neurosciences
Thomas Lottner, Simon Reiss, Stefan B. Rieger, Martin Schuettler, Johannes Fischer, Lars Bielak, Ali C. Oezen, Michael Bock
Summary: This study investigated the issue of radio-frequency (RF) induced heating in coupled multi-lead implants through temperature mapping and electric field measurements. The results showed that, in the tested conditions, a larger number of electrodes either reduced or had a similar risk of RF induced heating, indicating that the size of electrode grids can be used as a design parameter to change the implants RF response, thereby reducing the risk of RF induced heating and improving the safety of patients with neuro-implants undergoing MRI examinations.
Article
Thermodynamics
Christian Suarez, Baltasar Toharias, Maria Salva Aguirre, Artem Chesalkin, Felipe Rosa, Alfredo Iranzo
Summary: This study conducted experimental dynamic load cycling (DLC) tests and current density mapping (CDM) measurements on different inlet/outlet configurations of a parallel-serpentine proton-exchange membrane fuel cell (PEMFC). The results showed that the Inverse Hydrogen Flow configuration performed the best, but the differences with other configurations were not significant, with maximum differences below 5% in terms of voltage and power densities in polarization and power curves. The DLC results also showed similar performance among the experimented configurations, with maximum energy differences below 10%.
Article
Engineering, Environmental
Benny Zuse Rousso, Edoardo Bertone, Rodney A. Stewart, Karsten Rinke, David P. Hamilton
Summary: Optical sensors for fluorescence of chlorophyll a and phycocyanin are commonly used proxies for algae and cyanobacteria biomass monitoring. However, fluctuations in light intensity can significantly suppress the fluorescence measurements, especially during bright conditions. Diel variations in light intensity need to be considered as a significant source of bias for fluorescence probes used for algal monitoring.
Article
Chemistry, Multidisciplinary
Donghyuk Kim, Daniel Hernandez, Kyoung-Nam Kim
Summary: The study demonstrates that folding the ground and patch planes in a zigzag pattern can reduce the area of the patch antenna by 30% while maintaining good antenna performance. The antenna produces multiple resonant modes that can be used for MRI and RF heating, with potential applications in magnetic resonance imaging and heating hyperthermia.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Shengqi Zhang, Liang Pu, Simone Mancin, Zhenjun Ma, Lingling Xu
Summary: This study investigates the effects of material types, structural parameters, and heating configurations on the melting front, heat transfer characteristics, and temperature distribution of metal foam/paraffin composite phase change materials (PCMs) in large cavities. The results provide insights into the heat transfer mechanisms during the melting process and a correlation to model the melting process of the composite PCMs.
Article
Oncology
Kemal Sumser, Tomas Drizdal, Gennaro G. Bellizzi, Juan A. Hernandez-Tamames, Gerard C. van Rhoon, Margarethus Marius Paulides
Summary: The lack of accurate temperature monitoring can hinder the clinical effectiveness of hyperthermia treatments. To address the need for temperature monitoring in the head and neck region, an MR compatible hyperthermia applicator, the MRcollar, has been designed. Experimental validation shows that the MRcollar has good heating capabilities and MRI compatibility, with the potential to improve treatment outcomes.
Article
Thermodynamics
Ataollah Khanlari, Adnan Sozen, Faraz Afshari, Azim Dogus Tuncer, Umit Agbulut, Zeynep Aytac Yilmaz
Summary: Solar energy has received great attention in recent years due to its economic, non-polluting, and renewable nature. This study investigates different plenum and absorber configurations of solar air heating wall (SAHW) through experimental and numerical methods. The results show that parallel-flow SAHWs perform better than other placements of absorber plate, with a highest thermal efficiency reaching 80.51% and an average deviation of 5.5% between experimentally and numerically obtained outlet temperature. The designed SAHW in this study has potential for various industrial and residential applications such as air preheating, space heating, and drying.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Engineering, Electrical & Electronic
Eugenio Mattei, Elena Lucano, Federica Censi, Michele Triventi, Giovanni Calcagnini
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2016)
Article
Engineering, Electrical & Electronic
Mohamad Omar Al Kalaa, Walid Balid, Hazem H. Refai, Nickolas J. LaSorte, Seth J. Seidman, Howard I. Bassen, Jeffrey L. Silberberg, Donald Witters
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2017)
Article
Cardiac & Cardiovascular Systems
Federica Censi, Giovanni Calcagnini, Eugenio Mattei, Leonardo Calo, Antonio Curnis, Antonio D'Onofrio, Diego Vaccari, Gabriele Zanotto, Loredana Morichelli, Nicola Rovai, Alessio Gargaro, Renato Pietro Ricci
INTERNATIONAL JOURNAL OF CARDIOLOGY
(2017)
Article
Psychiatry
Cristina Ottaviani, Sabrina Fagioli, Eugenio Mattei, Federica Censi, Louisa Edwards, Emiliano Macaluso, Marco Bozzali, Hugo D. Critchley, Giovanni Calcagnini
PSYCHOSOMATIC MEDICINE
(2018)
Article
Environmental Sciences
Eugenio Mattei, Federica Censi, Giovanni Calcagnini
Article
Genetics & Heredity
Emanuele Rocco Villani, Angelo Carfi, Antonella Di Paola, Luigi Palmieri, Chiara Donfrancesco, Cinzia Lo Noce, Domenica Taruscio, Paola Meli, Paolo Salerno, Yllka Kodra, Flavia Pricci, Manuela Tamburo de Bella, Marco Floridia, Graziano Onder
AMERICAN JOURNAL OF MEDICAL GENETICS PART A
(2020)
Article
Environmental Sciences
Eugenio Mattei, Federica Censi, Giovanni Calcagnini
Summary: The study evaluated the potential risks for users with pacemakers or implantable cardioverter defibrillators using different models of stun guns, and found that the effects on PM/ICD behavior were similar among the different stun gun models.
Article
Endocrinology & Metabolism
Graziano Onder, Luigi Palmieri, Nicola Vanacore, Marina Giuliano, Silvio Brusaferro
Summary: In patients dying with COVID-19 in Italy, obesity is associated with an increased probability of nonrespiratory complications, particularly shock and acute renal failure. These associations seem stronger in younger than in older adults.
Article
Endocrinology & Metabolism
Valeria Raparelli, Luigi Palmieri, Marco Canevelli, Flavia Pricci, Brigid Unim, Cinzia Lo Noce, Emanuele R. Villani, Paula A. Rochon, Louise Pilote, Nicola Vanacore, Graziano Onder
BIOLOGY OF SEX DIFFERENCES
(2020)
Letter
Virology
Ornella Punzo, Stefania Bellino, Luigi Palmieri, Cinzia Lo Noce, Marina Giuliano, Paola Meli, Stefano Boros, Antonino Bella, Flavia Riccardo, Patrizio Pezzotti, Graziano Onder
JOURNAL OF MEDICAL VIROLOGY
(2021)
Article
Environmental Sciences
Eugenio Mattei, Federica Censi, Giovanni Calcagnini, Rosaria Falsaperla
Summary: This paper outlines the method for risk assessment of workers with cardiac AIMD exposed to EMF according to EU regulations, along with presenting three case studies related to specific EMF sources to highlight how initial risk assessment analysis can be conducted in practice.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Geriatrics & Gerontology
Luigi Palmieri, Katie Palmer, Cinzia Lo Noce, Paola Meli, Marina Giuliano, Marco Floridia, Manuela Tamburo de Bella, Andrea Piccioli, Silvio Brusaferro, Graziano Onder
Summary: The characteristics of patients dying with COVID-19 in Italy, including age, gender, comorbidities, infections, treatment patterns, and survival time, have significantly changed between the first and second phases of the epidemic. These changes are likely attributed to improved care organization, delivery, and disease treatment knowledge.
AGING CLINICAL AND EXPERIMENTAL RESEARCH
(2021)
Article
Clinical Neurology
Marco Canevelli, Luigi Palmieri, Valeria Raparelli, Cinzia Lo Noce, Elisa Colaizzo, Dorina Tiple, Luana Vaianella, Nicola Vanacore, Silvio Brusaferro, Graziano Onder
ALZHEIMER'S & DEMENTIA: DIAGNOSIS, ASSESSMENT & DISEASE MONITORING
(2020)
Article
Environmental Sciences
Eugenio Mattei, Giovanni Calcagnini, Federica Censi, Iole Pinto, Andrea Bogi, Rosaria Falsaperla
Article
Public, Environmental & Occupational Health
Rosaria Falsaperla, Eugenio Mattei, Federica Censi, Andrea Bogi, Iole Pinto, Giovanni Calcagnini
GIORNALE ITALIANO DI MEDICINA DEL LAVORO ED ERGONOMIA
(2019)