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We present a nitrogen-targeting-Proton-Carbon-Alpha-Therapy method, abbreviated as Proton-CAT, which partially converts protons into carbon-12 and $\alpha$ particles through nuclear reactions between protons and nitrogen-15. Monte Carlo…

Low-dose CT has been a key diagnostic imaging modality to reduce the potential risk of radiation overdose to patient health. Despite recent advances, CNN-based approaches typically apply filters in a spatially invariant way and adopt…

Image and Video Processing · Electrical Eng. & Systems 2021-07-27 Lu Xu , Yuwei Zhang , Ying Liu , Daoye Wang , Mu Zhou , Jimmy Ren , Jingwei Wei , Zhaoxiang Ye

Recently, some authors have shown that a DNA molecule produces electromagnetic signals and communicates with other DNA molecules or other molecules. In fact, a DNA acts like a receiver or transmitter of radio waves. In this paper, we…

Biological Physics · Physics 2018-08-03 Alireza Sepehri

The generalization of deep learning-based low-dose computed tomography (CT) reconstruction models to doses unseen in the training data is important and remains challenging. Previous efforts heavily rely on paired data to improve the…

Image and Video Processing · Electrical Eng. & Systems 2025-06-30 Qi Gao , Zhihao Chen , Dong Zeng , Junping Zhang , Jianhua Ma , Hongming Shan

The design, construction, and preliminary testing of a second generation proton CT scanner is presented. All current treatment planning systems at proton therapy centers use X-ray CT as the primary imaging modality for treatment planning to…

Particle therapy is an established method to treat deep-seated tumours using accelerator-produced ion beams. For treatment planning, the precise knowledge of the relative stopping power (RSP) within the patient is vital. Conversion errors…

The lack of molecular-level understanding for the electronic excitation response of DNA to charged particle radiation, such as high-energy protons, remains a fundamental scientific bottleneck in advancing proton and other ion beam cancer…

Soft Condensed Matter · Physics 2023-03-17 Christopher Shepard , Dillon Yost , Yosuke Kanai

The Geant4-DNA project proposes to develop an open-source simulation software based and fully included in the general-purpose Geant4 Monte Carlo simulation toolkit. The main objective of this software is to simulate biological damages…

Several improvements were made for Nuclear Track Detectors (NTDs) used for environmental studies and for particle searches. A new method was used to determine the bulk etch rate of CR39 and Makrofol NTDs. It is based on the simultaneous…

Instrumentation and Detectors · Physics 2008-11-26 S. Manzoor , S. Balestra , M. Cozzi , M. Errico , G. Giacomelli , M. Giorgini , A. Kumar , A. Margiotta , E. Medinaceli , L. Patrizii , V. Popa , I. E. Qureshi , V. Togo

Mandible Osteoradionecrosis (ORN) is one of the most severe adverse events (AEs) for head and neck (H&N) cancer radiotherapy. Previous retrospective investigations on real-world data relied on conventional statistical models that primarily…

Many neurodegenerative diseases are related to the propagation and accumulation of toxic proteins throughout the brain. The lesions created by aggregates of these toxic proteins further lead to cell death and accelerated tissue atrophy. A…

Neurons and Cognition · Quantitative Biology 2018-10-17 Johannes Weickenmeier , Ellen Kuhl , Alain Goriely

Deep learning models are notoriously data-hungry. Thus, there is an urging need for data-efficient techniques in medical image analysis, where well-annotated data are costly and time consuming to collect. Motivated by the recently revived…

Computer Vision and Pattern Recognition · Computer Science 2021-07-22 Jiawei Yang , Yao Zhang , Yuan Liang , Yang Zhang , Lei He , Zhiqiang He

We study the energy deposition by light and heavy nuclei in tissue-like media as used for cancer therapy. The depth-dose distributions for protons, $^{3}$He, $^{12}$C, $^{20}$Ne, and $^{58}$Ni nuclei are calculated within a Monte Carlo…

Medical Physics · Physics 2010-11-03 Igor Pshenichnov , Igor Mishustin , Walter Greiner

We present a GUT-model-independent calculation of hadron matrix elements for all dimension-six operators associated with baryon number violating processes using lattice QCD. Our results cover all the matrix elements required to estimate the…

High Energy Physics - Phenomenology · Physics 2016-11-23 Yoshinobu Kuramashi

The use of dual-energy CT (DECT) potentially decreases range uncertainties in proton and ion therapy treatment planning via determination of the involved physical target quantities. For eventual clinical application, the correct treatment…

Medical Physics · Physics 2016-05-19 Christian Möhler , Patrick Wohlfahrt , Christian Richter , Steffen Greilich

The distribution of absorbed dose in radionuclide therapy with Lu$^{177}$ can be approximated by convolving an image of the time-integrated activity distribution with a dose voxel kernel representing different tissue types. This fast but…

Machine Learning · Statistics 2026-03-25 Luciano Melodia

The average Relative Biological effectiveness (RBE) factors for neutron irradiation in the context of a BNCT treatment are studied. This research considers the various interactions and secondary particles of each process and estimates the…

Medical Physics · Physics 2025-01-30 M. Pedrosa-Rivera , J. Praena , C. Ruiz-Ruiz , M. J. Ruiz-Magaña , I. Porras

The relationship between the physical characteristics of the radiation field and biological damage is central to both radiotherapy and radioprotection, yet the link between spatial scales of energy deposition and biological effects remains…

The elucidation of fundamental mechanisms underlying ion-induced radiation damage of biological systems is crucial for the advancement of radiotherapy with ion beams and for radiation protection in space. The study of ion-induced biodamage…

Biological Physics · Physics 2023-09-06 Ida Friis , Alexey V. Verkhovtsev , Ilia A. Solov'yov , Andrey V. Solov'yov

We present an \textit{ab initio} calculation of nuclear $\beta$ decay within the framework of nuclear lattice effective field theory (NLEFT), employing auxiliary-field quantum Monte Carlo methods to solve the nuclear many-body problem. Our…

Nuclear Theory · Physics 2026-01-06 Teng Wang , Xu Feng , Bing-Nan Lu