Magnetically Driven Elastic Microswimmers: Exploiting Hysteretic Collapse for Autonomous Propulsion and Independent Control

本文提出了一种由三个磁性珠子和两个弹性连接组成的磁驱动弹性微游泳器,其利用外部振荡磁场诱导的滞后性非互易折叠与展开机制实现净推进,并通过优化几何结构与磁场参数实现了对不同微游泳器的独立控制,为靶向药物输送等微创医疗应用提供了可行方案。

Theo Lequy, Andreas M. MenzelWed, 11 Ma🔬 physics.app-ph

Exploring Strategies for Personalized Radiation Therapy Part IV: An Interaction-Picture Approach to Quantifying the Abscopal Effect

该研究提出了一种源自量子力学的相互作用图景变换方法,用于在个性化超分割立体定向自适应放疗(PULSAR)背景下,将远隔效应量化为连续随机现象,从而在个体层面精确评估原发与继发肿瘤间的相互作用强度,并推动该效应的标准化报告与跨研究比较。

Hao Peng, Laurentiu Pop, Kai Jiang, Faya Zhang, Debabrata Saha, Raquibul Hannan, Robert TimmermanWed, 11 Ma🧬 q-bio

Recent application studies of an INTPIX4NA SOIPIX detector-based X-ray camera using an SiTCP-XG 10GbE-based high-speed readout system at KEK facilities

本文介绍了由 KEK 开发的基于 INTPIX4NA SOIPIX 探测器及 SiTCP-XG 10GbE 高速读出系统的 X 射线相机,并报告了其在 X 射线变焦显微镜、相位衬度成像以及利用μ子 X 射线无损检测锂离子电池电极材料等三项最新应用研究。

Ryutaro Nishimura, Noriyuki Igarashi, Daisuke Wakabayashi, Yuki Shibazaki, Yoshio Suzuki, Keiichi Hirano, Hiromi Miki, Akio Yoneyama, Hiroshi Sugiyama, Kazuyuki Hyodo, Izumi Umegaki, Koichiro Shimomura, Yasuo AraiWed, 11 Ma🔬 physics.optics

Initial Performance of a Long Axial FOV PET with TOF and DOI capabilities: IMAS system

本文介绍了 IMAS 系统的设计、构建及初步性能评估,该长轴向视野 PET 原型机首次实现了同时具备飞行时间(TOF)和深度相互作用(DOI)能力的全身成像,并在临床试点中展示了优于传统商业扫描仪的肿瘤识别能力。

Antonio J. Gonzalez, Alvaro Anreus-Valero, David Sanchez, Santiago Jiménez-Serrano, Marta Freire, Andrea Gonzalez-Montoro, Edwing Y. Ulin-Briseno, Neus Cucarella, John Barrio, Andrew Laing, Jorge Álamo, Julio Barbera, Luis F. Vidal, Marc Gil, Jose M. Benlloch, Alfonso Rios, Luis Marti Bonmati, Irene Torres-EspallardoWed, 11 Ma🔬 physics

Efficient Vision Mamba for MRI Super-Resolution via Hybrid Selective Scanning

该论文提出了一种结合多头选择性状态空间模型与轻量级通道 MLP 的高效混合扫描视觉 Mamba 框架,通过极低的计算成本在 7T 脑部和 1.5T 前列腺 MRI 超分辨率任务中实现了超越现有方法的精度与解剖细节保留能力。

Mojtaba Safari, Shansong Wang, Vanessa L Wildman, Mingzhe Hu, Zach Eidex, Chih-Wei Chang, Erik H Middlebrooks, Richard L. J Qiu, Pretesh Patel, Ashesh B. Jani, Hui Mao, Zhen Tian, Xiaofeng YangTue, 10 Ma🔬 physics

Synthetic Data in MR Spectroscopy: Current Practices, Applications, and Considerations

本文由国际磁共振医学学会(ISMRM)MRS 研究组下设的合成数据工作组撰写,全面综述并评估了磁共振波谱(MRS)领域中合成数据的生成方法、当前实践及其在优化采集、软件验证、深度学习应用和增强可重复性等方面的关键作用。

John T. LaMaster, Aaron T. Gudmundson, Alireza Abaei, Seyma Alcicek, Arturo Alvarado, Ovidiu Andronesi, Tiffany K. Bell, Wolfgang Bogner, Hanna Bugler, Alexander R Craven, Cristina Cudalbu, Alma Davidson, Christopher W. Davies-Jenkins, Dinesh Deelchand, Richard A. E. Edden, Morteza Esmaeili, Candace C Fleischer, Abdelrahman Gad, Guglielmo Genovese, Saumya Gurbani, Ashley D. Harris, Pierre-Gilles Henry, Kay Chioma Igwe, Ajin Joy, Margarida Julià-Sapé, Hyeonjin Kim, Roland Kreis, Fan Lam, Karl Landheer, Bernard Lanz, Chu-Yu Lee, Clémence Ligneul, Julian P. Merkofer, Jack J. Miller, Jessie Mosso, Stanislav Motyka, Eloïse Mougel, Paul G. Mullins, Saipavitra Murali-Manohar, Chloé Najac, Shinichiro Nakajima, Georg Oeltzschner, Esin Ozturk-Isik, Marco Palombo, Ulrich Pilatus, Justyna Platek, Emma Van Praagh, Xiaobo Qu, Rudy Rizzo, Christopher T. Rodgers, Esau Poblador Rodriguez, Yeison Rodriguez, Manoj K Sammi, Dennis M. J. van de Sande, Manoj Kumar Sarma, Francesca Saviola, Anouk Schrantee, Amirmohammad Shamaei, Dunja Simicic, Brian J Soher, Nico Sollmann, Yulu Song, Jeffrey A Stanley, Bernhard Strasser, Antonia Susnjar, Kelley M. Swanberg, M. Albert Thomas, Ivan Tkáč, Zhangren Tu, Paul J. Weiser, Mark Widmaier, Martin Wilson, Christopher J. Wu, Lijing Xin, Helge J. Zöllner, \.Ipek Özdemir, MRS Synthetic Data Working Group, Antonia KaiserTue, 10 Ma🔬 physics

Ultra-Sharp Upright Photon Radiotherapy via Low Energy Extended Distance: An Alternative to FLASH for high flux Sources

该研究提出了一种利用低能(2.5 MV)光子束结合延长源皮距(4 米)及直立治疗体位的替代方案,通过显著减小射野半影(1.0 mm)并降低表面剂量,实现了比标准 6 MV 技术更锐利的剂量分布和更高的治疗适形度,为高通量源下的超锐利放疗提供了新途径。

Lloyd E Kamole Ghomsi, Clinton Gibson, Veng-Jean Heng, Ramish M Ashraf, Lawrie SkinnerTue, 10 Ma🔬 physics.app-ph

Moiré Artifact Reduction in Grating Interferometry Using Multiple Harmonics and Total Variation Regularization

该论文提出了一种结合多谐波分析与全变分正则化的图像恢复算法,通过估计真实的相位步进位置,有效消除了光栅干涉成像中因非理想正弦条纹和步长不均导致的莫尔伪影,并在 Talbot-Lau 及调制相位光栅干涉仪的多种样本成像中验证了其有效性。

Hunter C. Meyer, Joyoni Dey, Conner B. Dooley, Murtuza S. Taqi, Varun R. Gala, Christopher Morrison, Victoria L. Fontenot, Kyungmin Ham, Leslie G. Butler, Alexandra NoelThu, 12 Ma🔬 physics.optics

GOUHFI 2.0: A Next-Generation Toolbox for Brain Segmentation and Cortex Parcellation at Ultra-High Field MRI

本文介绍了 GOUHFI 2.0,这是一个专为超高分辨率 MRI 设计的新一代深度学习工具箱,通过引入基于 238 名受试者数据的域随机化策略及双 3D U-Net 网络,实现了跨场强、跨对比度的鲁棒全脑分割、62 个皮层分区及体积测量,有效解决了现有工具在超高分辨率数据上表现不佳的难题。

Marc-Antoine Fortin, Anne Louise Kristoffersen, Paal Erik GoaThu, 12 Ma⚡ eess

Controlled kHz laser-driven electron irradiations for pre-clinical applications

该研究首次利用 kHz 激光驱动电子束在空气中对生物样本(斑马鱼胚胎和胶质瘤细胞)进行了可控辐照,通过优化束流稳定性实现了正常组织保护与抗癌疗效的平衡,标志着激光等离子体加速器迈向临床转化的重要里程碑。

C. M. Lazzarini, M. Favetta, E. R. Szabo, I. Zymak, L. V. N. Goncalves, M. Jech, S. Lorenz, M. Nevrkla, J. Sisma, A. Spadova, F. Vitha, R. Antipenkov, P. Bakule, A. Grenfell, V. Sobr, W. Szuba, J. Dudas, A. Ebert, R. Molnar, R. Polanek, S. V. Bulanov, K. Hideghety, G. M. GrittaniThu, 12 Ma🔬 physics

Predicting the onset of period-doubling bifurcations via dominant eigenvalue extracted from autocorrelation

该研究提出了一种名为“自相关主导特征值”(DE-AC)的新方法,通过利用奥恩斯坦 - 乌伦贝克过程推导解析近似来估计主导特征值,从而在预测心脏周期倍增分岔(如心律失常)的临界点时,比传统早期预警信号及现有动态特征值方法具有更高的灵敏度和特异性。

Zhiqin Ma, Chunhua Zeng, Ting Gao, Jinqiao DuanMon, 09 Ma🔬 physics

Ultra-high frequency ultrasound imaging and quantification of microvascular flow in xenograft renal cell carcinoma in an avian chorioallantoic membrane model

该研究开发并验证了一种结合组织运动补偿与帧间减法的超高频超声成像流程,成功克服了鸡胚绒毛尿囊膜模型中的组织运动干扰,实现了对肾细胞癌异种移植瘤微血管血流及治疗反应的高效、低计算成本评估。

Sara Mar, Emmanuel Cherin, Justin Xu, David E. Goertz Hon S. Leong, Christine E. M. DemoreMon, 09 Ma🔬 physics

CBCT-Based Synthetic CT Generation Using Conditional Flow Matching Model

该研究提出了一种基于条件流匹配模型的生成方法,通过将CBCT图像逐步转换为CT图像,有效消除了锥束CT中的伪影并校正了HU值,从而在脑、头颈及肺癌患者中实现了高质量的合成CT生成,显著提升了CBCT引导的在线自适应放疗中的器官分割与剂量计算可靠性。

Junbo Peng, Huiqiao Xie, Tonghe Wang, Xiangyang Tang, Xiaofeng YangMon, 09 Ma🔬 physics

Sparse probabilistic evaluation for treatment planning: a feasibility study in IMPT head & neck patients

该研究提出了一种集成于临床治疗计划系统中的稀疏概率评估(SPE)方法,通过优化误差网格设置,在显著降低计算时间的同时保持了足够的精度,从而证明了其在头颈部调强质子治疗(IMPT)临床实践中的可行性。

Jenneke I. de Jong, Steven J. M. Habraken, Albin Fredriksson, Johan Sundström, Erik Engwall, Sebastiaan Breedveld, Mischa S. HoogemanMon, 09 Ma🔬 physics