Results 71 to 80 of about 1,800,736 (210)

Independent Component Analysis for Non‐Contrast‐Enhanced Free‐Breathing Pulmonary Ventilation and Perfusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce a robust approach for non‐contrast‐enhanced free‐breathing functional lung MRI based on independent component analysis (ICA), addressing key limitations of standard methods such as sensitivity to irregular breathing or irregular heartbeat.
Laura Rozo Pardo, Rabea Klaar, Enrico Schulz, Moritz Rabe, Christopher Kurz, Guillaume Landry, Jens Ricke, Bastian Sabel, Olaf Dietrich   +8 more
wiley   +1 more source

C–X–C Motif Chemokine Receptor 4 (CXCR4)‐Targeted Biologically Guided Proton Spatially Fractionated Radiotherapy for Bulky Limited‐Stage Small Cell Lung Cancer

Precision Radiation Oncology, EarlyView.
A newly proposed proton spatially fractionated radiotherapy guided by biological imaging Abstract Background and Purpose To evaluate the feasibility and dosimetric safety of integrating C–X–C motif chemokine receptor 4 (CXCR4)‐targeted tracer 18F‐AlF‐NOTA‐QHY‐04 positron emission tomography imaging with biologically guided proton spatially fractionated
Keru Pu, Tengxiang Li, Shengnan Xu, Xue Sha, Qingtao Qiu, Jinming Yu, Yong Yin, Jie Liu   +7 more
wiley   +1 more source

Symmetric/asymmetric H-plane horn fed offset parabolic reflector antenna with switchable pencil/fan-beam radiation characteristics

, 2012
This paper presents a modified offset parabolic reflector antenna design with easily switchable pencil/fan-beam radiation patterns for X-band tracking, scanning and surveillance microwave radar systems.
Yurduseven, Okan, Smith, David, Okan Yurduseven, Smith, Dave, Yurduseven, Okan; id_orcid, David Smith   +5 more
core   +1 more source

Pencil beam characteristics of the next-generation proton scanning gantry of PSI: design issues and initial commissioning results [PDF]

, 2018
In this paper we report on the main design features, on the realization process and on selected first results of the initial commissioning of the new Gantry 2 of PSI for the delivery of proton therapy with new advanced pencil beam scanning techniques. We
Safai, S., Pedroni, E., Zenklusen, S., Meer, D., Bula, C.   +4 more
core  

Recent Progress in Pencil Beam Scanning FLASH Proton Therapy: A Narrative Review

, 2022
Background and Objective: Recent experimental studies using ultra-high dose rate radiation therapy (FLASH-RT) have shown improved normal tissue sparing and comparable tumor control compared to conventional dose rate RT.
Choi, J. Isabelle, Wei, Shouyi, Shi, Chengyu, Huang, Sheng, Simone II, Charles B., Lin, Haibo, Press, Robert H., Chen, Chin-Cheng, Kang, Minglei   +8 more
core  

Dynamic control of carbon‐ion radiation dose distribution amid respiratory motion challenges: A review of prediction research using geant4 and deep learning physics‐constrained models

Journal of Applied Clinical Medical Physics, Volume 27, Issue 11, November 2026.
Abstract Background Carbon ion radiotherapy (CIRT) offers superior dose conformity and biological effectiveness; however, its precision is highly sensitive to respiratory motion, leading to dose uncertainty and interplay effects that compromise treatment accuracy.
Jianhua Ding, Peng Li, Chai Hong Yeong
wiley   +1 more source

Design study for a compact laser-driven source for medical x-ray fluorescence imaging

Physical Review Accelerators and Beams, 2020
Thomson scattering sources with their hard x-ray pencil beams represent a promising candidate to drive high-resolution X-ray Fluorescence Imaging (XFI).
Theresa Brümmer, Alexander Debus, Richard Pausch, Jens Osterhoff, Florian Grüner   +4 more
doaj   +1 more source

Proton arc therapy reduces the dose delivered to circulating blood compared to intensity‐modulated proton therapy for head‐and‐neck cancer

Journal of Applied Clinical Medical Physics, Volume 27, Issue 11, November 2026.
Background Compared to intensity‐modulated proton therapy (IMPT), proton arc therapy (PAT) has various dosimetric advantages. However, questions have been raised over whether the larger low‐dose bath during PAT may increase radiation‐induced lymphocyte killing, which is correlated with adverse clinical outcomes.
Sebastian Tattenberg, Peilin Liu, Xiaoda Cong, Cornelia Hoehr, Xuanfeng Ding   +4 more
wiley   +1 more source

High frequency percussive ventilation for respiratory immobilization in radiotherapy

Technical Innovations & Patient Support in Radiation Oncology, 2019
High frequency percussive ventilation (HFPV) employs high frequency low tidal volumes (100–400 bursts/min) to provide respiration in awake patients while simultaneously reducing respiratory motion.
Ina M. Sala, Girish B. Nair, Beverly Maurer, Thomas M. Guerrero   +3 more
doaj   +1 more source

DoseRAD2026: A benchmark dataset for AI‐accelerated photon and proton dose calculation in radiotherapy

Medical Physics, Volume 53, Issue 11, November 2026.
Abstract Purpose Accurate dose calculation is a fundamental component of modern radiotherapy, enabling precise tumor irradiation while sparing surrounding healthy tissue. With the increasing adoption of magnetic resonance imaging (MRI)‐guided radiotherapy and growing interest in real‐time adaptive radiotherapy, there is a demand for fast and accurate ...
Fan Xiao, Nikolaos Delopoulos, Niklas Wahl, Lennart Volz, Lina Bucher, Matteo Maspero, Miguel Palacios, Muheng Li, Samir Schulz, Viktor Rogowski, Ye Zhang, Zoltan Perko, Christopher Kurz, George Dedes, Guillaume Landry, Adrian Thummerer   +15 more
wiley   +1 more source