Article
Chemistry, Physical
Mantvydas Merkis, Egidijus Griskonis, Jurgita Laurikaitiene, Judita Puiso, Ignas Pikas, Satimboy Palvanov, Diana Adliene
Summary: This study investigates the dose sensitivity enhancing effect of silver nanoparticles on dosimetric gels. The nanoparticles are added to nMAG and NIPAM dose gel formulations, and their synthesis and characterization are conducted. The results show that Ag nanoparticles allow for higher sensitivity in both NIPAM and nMAG dose gels, and further analysis indicates signs of radiation-enhancing effect. Improved gel dosimeters could be valuable for dose verification procedures, although the application of nanoparticle-enriched dose gels for simulating dose enhancement effect in human tissue is not straightforward due to variations in different gel dosimeters.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Review
Polymer Science
Micaela A. Macchione, Sofia Lechon Paez, Miriam C. Strumia, Mauro Valente, Facundo Mattea
Summary: Advances in radiotherapy technology have greatly improved dose conformation to tumors and preservation of healthy tissues. Gel dosimetry, as a promising tool for evaluating high-spatial-resolution dose distributions, requires a deep understanding of its physicochemical basis. This review provides detailed descriptions of the chemical processes and interactions involved in gel dosimetry and serves as a starting point for developing new and innovative systems.
Article
Multidisciplinary Sciences
Lukas R. H. Gerken, Alexander Gogos, Fabian H. L. Starsich, Helena David, Maren E. Gerdes, Hans Schiefer, Serena Psoroulas, David Meer, Ludwig Plasswilm, Damien C. Weber, Inge K. Herrmann
Summary: Nanoparticles can serve as radioenhancers in radiation therapy. This research investigates the dose enhancement capabilities of various nanoparticles based on their metal core composition and beam characteristics, providing design criteria for their optimal performance in specific radiotreatments.
NATURE COMMUNICATIONS
(2022)
Article
Polymer Science
Matheus Antonio da Silveira, Juliana Fernandes Pavoni, Alexandre Colello Bruno, Gustavo Viani Arruda, Oswaldo Baffa
Summary: Craniospinal irradiation is a complex radiation technique used to treat specific types of tumors. Planning this technique in adult patients is challenging, but using IMRT and three-dimensional dosimetry can improve dose distribution verification.
Article
Radiology, Nuclear Medicine & Medical Imaging
Mads L. Jensen, Brian Julsgaard, Rosana M. Turtos, Peter S. Skyt, Morten B. Jensen, Ludvig P. Muren, Peter Balling
Summary: A novel optically-stimulated-luminescence (OSL)-based 3D dosimetry system capable of measuring radiation doses in clinically relevant volumes was demonstrated.
Article
Radiology, Nuclear Medicine & Medical Imaging
Erick Sebastian Rundo Acurio, Jessica Caroline Lizar, Gustavo Viani Arruda, Juliana Fernandes Pavoni
Summary: The study proposed a methodology for evaluating 3D dose distributions of complex SIB treatments, providing an important overview of the dose distributions which significantly complemented the usual gamma analysis results.
Article
Chemistry, Analytical
Zahra Alyani Nezhad, Ghazale Geraily, Wrya Parwaie, Elham Hossein Nezhad
Summary: This study evaluated the dose enhancement factor (DEF) of bismuth oxide nanoparticles using different gel dosimeters. The results showed that DEF decreased when nanoparticles were combined with the gel. Therefore, the characteristics of nanoparticles and the components of the gel can significantly affect the feasibility of using a gel dosimeter to evaluate DEF.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ngoc Han Huynh, James C. L. Chow
Summary: This study investigated the effectiveness of cancer cell killing by gold nanoparticles in proton radiation, showing that the dose enhancement ratio increases with smaller nanoparticle size, shorter distance to DNA, and lower proton beam energy. The maximum dose enhancement ratio (1.83) was achieved with a 25 nm-radius gold nanoparticle, irradiated by a 0.5 MeV proton beam and located 30 nm away from the DNA.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Biomedical
Iara S. Lima, Eder J. Guidelli, Oswaldo Baffa
Summary: Gold nanoparticles are extensively used to enhance the sensitivity of radiation dosimeters. Nanocomposites of alanine, 2-methylalanine, asparagine and monosodium glutamate containing gold nanoparticles were prepared and characterized. The dosimetric response of the nanocomposite dosimeters is influenced by factors such as radiation dose, gold mass percentage, and intrinsic sensitivity of the materials. Higher DEFs were observed for materials with lower intrinsic sensitivities and lower radiation doses. These results provide new insights into the use of gold nanoparticles for constructing more sensitive radiation dosimeters.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jasmine Duchaine, Daniel Markel, Hugo Bouchard
Summary: This study proposes an effective and precise method to correct the dose-rate dependence of silicon diode detectors in the context of clinical relative dosimetry.
Article
Engineering, Electrical & Electronic
Luana de F. Nascimento, Jo Goossens, Paul Leblans, Paul Sterckx, Filip Vanhavere, Lara Struelens, Mark Akselrod, Dirk Verellen
Summary: The article investigates the response of Al2O3:C and Al2O3:C,Mg radioluminescence films for medical dosimetry, finding that Al2O3:C,Mg films have advantages over Al2O3:C films, with better performance, suitable for small field beam dosimetry, and capable of real-time measurement of two-dimensional dose-rate distributions, making it an effective dosimetry system.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Review
Engineering, Biomedical
Martin A. Ebert, Sarah Gulliford, Oscar Acosta, Renaud de Crevoisier, Todd McNutt, Wilma D. Heemsbergen, Marnix Witte, Giuseppe Palma, Tiziana Rancati, Claudio Fiorino
Summary: Incorporating spatial dose distribution and its correlation with anatomy can lead to more robust predictions of toxicity and the development of more general NTCP models. Current research is moving towards computationally intensive methods like machine learning and neural networks for personalized treatment and expanding the solution space for radiation therapy.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Oncology
Elena Vlastou, Evaggelos Pantelis, Efstathios P. Efstathopoulos, Pantelis Karaiskos, Vasileios Kouloulias, Kalliopi Platoni
Summary: This study investigates the dose enhancement effect of gold nanoparticles (AuNPs) under different irradiation conditions. The results suggest that a significant dose increase can be achieved, especially at close distances to AuNPs.
Article
Radiology, Nuclear Medicine & Medical Imaging
Jessica Caroline Lizar, Karina Cristina Volpato, Fernanda Calixto Brandao, Flavio da Silva Guimaraes, Gustavo Viani Arruda, Juliana Fernandes Pavoni
Summary: The study evaluated the respiratory motion influence on dose delivery to breast-shaped phantoms using 3D-RT, FiF, and IMRT planning techniques, finding that increasing respiratory motion led to more pronounced dose distribution variations, with FiF having the smallest variations. Gamma evaluations showed failures mainly in the central region of the phantom for FiF and IMRT treatments.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2021)
Review
Polymer Science
Maurizio Marrale, Francesco d'Errico
Summary: Radiation-sensitive gels are a recent and promising development for RT dosimetry, offering tissue-equivalent and continuous 3D dose measurements. Their response is largely independent of radiation quality and dose rate, making them suitable for quality assessment of RT systems.
Article
Chemistry, Multidisciplinary
Chan Basha Nusrath Unnisa, Subramanian Chitra, Gowraraju Nirmala Devi, Ayyasamy Kiruthika, Selvaraj Mohana Roopan, Venkatesan Hemapriya, Ill-Min Chung, Seung-Hyun Kim, Mayakrishnan Prabakaran
RESEARCH ON CHEMICAL INTERMEDIATES
(2019)
Article
Engineering, Multidisciplinary
T. Surendra, Selvaraj Mohana Roopan, D. Devipriya, Md Maksudur Rahman Khan, Reda Hassanien
COMPOSITES PART B-ENGINEERING
(2019)
Article
Polymer Science
Gowraraju Nirmala Devi, Chan Basha Nusrath Unnisa, Selvaraj Mohana Roopan, Venkatesan Hemapriya, Subramanian Chitra, Ill-Min Chung, Seung-Hyun Kim, Mayakrishnan Prabakaran
MACROMOLECULAR RESEARCH
(2020)
Article
Materials Science, Biomaterials
Subramanyam Deepika, Chinnadurai Immanuel Selvaraj, Selvaraj Mohana Roopan
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2020)
Article
Materials Science, Multidisciplinary
Duraipandi Devi Priya, Selvaraj Mohana Roopan, Sehajpreet Singh, Jatin Bansal, Shajahan Shanavas, Maksudur Rahman Khan, Naif Abdullah Al-Dhabi, Mariadhas Valan Arasu, Veeramuthu Duraipandiyan
Article
Chemistry, Applied
Rajan Anitha, Chan Basha Nusrath Unnisa, Venkatesan Hemapriya, Selvaraj Mohana Roopan, Subramanian Chitra, Ill-Min Chung, Seung-Hyun Kim, Prabakaran Mayakrishnan
PIGMENT & RESIN TECHNOLOGY
(2020)
Article
Chemistry, Organic
Duraipandi Devi Priya, Selvaraj Mohana Roopan
SYNTHETIC COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Rajesh Sompalle, Selvaraj Mohana Roopan, Duraipandi Devi Priya, Krishnamurthy Suthindhiran, Gargi Sarkar, Malavika Ranjith, Murugan Arunachalapandi
Article
Chemistry, Physical
S. Rajeshkumar, M. H. Sherif, C. Malarkodi, M. Ponnanikajamideen, Mariadhas Valan Arasu, Naif Abdullah Al-Dhabi, Selvaraj Mohana Roopan
Summary: The study utilized sulphated polysaccharide extracted from marine brown seaweed to synthesize gold nanoparticles, and confirmed their structure and anti-cancer activity through various experimental techniques.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
K. Srinivasan, E. James Jabaseelan Samuel
RADIATION PHYSICS AND CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Archita Rani Dash, Aadit J. Lakhani, Duraipandi Devi Priya, T. Surendra, Md Maksudur Rahman Khan, E. James Jebaseelan Samuel, Selvaraj Mohana Roopan
Summary: In this study, stannic oxide nanoparticles were synthesized using the polysaccharide extract of gum acacia. The synthesized nanoparticles were characterized, and their potential for photocatalytic degradation of ciprofloxacin was investigated. Optimized conditions were determined, and the results showed that the efficiency of ciprofloxacin removal reached 99.7%.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Chemistry, Applied
Duraipandi Devi Priya, Chenichery Cheruvarekil Athira, Selvaraj Mohana Roopan
Summary: The study successfully synthesized HHP/Pd nanoparticles using hair protein as a capping/stabilizing/reducing agent, demonstrating excellent catalytic activity in Suzuki coupling reactions. The catalyst was optimized for multiple recycling runs without loss of activity, making it a promising candidate for organic synthesis applications.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Abhay Atmaram Upare, Pradip K. Gadekar, Kiran Jadhav, H. Sivaramakrishnan, Selvaraj Mohana Roopan
Article
Engineering, Biomedical
Suresh Rana, Jaafar Bennouna, E. James Jebaseelan Samuel, Alonso N. Gutierrez
PHYSICAL AND ENGINEERING SCIENCES IN MEDICINE
(2020)
Article
Chemistry, Medicinal
Pachiyappan Rajiv Gandhi, Chinnaperumal Kamaraj, Elangovan Vimalkumar, Selvaraj Mohana Roopan
CHINESE HERBAL MEDICINES
(2019)