Results 41 to 50 of about 523,530 (315)

Extending Imaging Volume in Soft X‐Ray Tomography

Advanced Photonics Research, 2023
Soft X‐ray tomography offers rapid imaging of whole, single cells with a few tens of nanometers spatial resolution without fixation or labeling. Herein, this technique is limited to specimens about 10 μm thick, such that applications of soft X‐ray ...
Axel Ekman, Jian-Hua Chen, Bieke Vanslembrouck, Valentina Loconte, Carolyn A. Larabell, Mark A. Le Gros, Venera Weinhardt   +6 more
doaj   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source

Phase contrast imaging with a laboratory-based microfocus X-ray source [PDF]

, 2007
This project looks at the design of an in-line X-ray phase contrast imaging system, based around the Bede Microsource®, on a suitable scale for imaging small pathological samples. The system is applied to two test objects to assess feasibility of its use
Kelly, Kathryn L, Kelly, Kathryn L.
core  

Carbon window soft x-ray imaging using multilayer optics

, 2022
Paper 59190EThe paper deals with the recent results of the experiments on soft X-ray imaging of various carbon-containing objects: biological samples, artificial carbon fibres, graphite slices, etc.
Uspenski, Y.A., Kondratenko, V.V., Bugayev, Y., Vinogradov, A.V., Kasyanov, Y.S., Schäfers, F., Feigl, T., Devizenko, O.Y., Artyukov, I.A., Saveliev, S.V., Feschenko, R.M., Romanova, S.A.   +11 more
core   +1 more source

The Imaging X-Ray Polarimetry Explorer (IXPE): technical overview IV [PDF]

, 2021
Scheduled to launch in late 2021 the Imaging X-ray Polarimetry Explorer (IXPE) is a Small Explorer Mission designed to open up a new window of investigation -- X-ray polarimetry.
Marshall, Herman L., Seek, Tim, McCracken, Jeffrey, Santoli, Francesco, Gurnee, Eli, Oppedisano, Chiara, DEL MONTE, Ettore, Latronico, Luca, Ramsey, Brian D., Fabiani, Sergio, Hibbard, Grant, Borotto, Fabio, McEachen, Michael, Wedmore, Jeffery, Byggott, H. Kyle, Johnson, Samantha, Forsyth, Brent, Lorenzi, Paolo, Mitsuishi, Ikuyuki, Breeding, Shawn, Rubini, Alda, Tennant, Allyn, O'Dell, Stephen, Pacheco, Richard, Tobia, Antonino, Xie, Fei, Le Roy, Shelley, La Monaca, Fabio, Delmonte, Ettore, Baumgartner, Wayne H., MASSARO, FRANCESCO, Muleri, Fabio, Cavazutti, Elisabetta, Castronuovo, Marco, Kilaru, Kiranmayee, Matt, Giorgio, Welch, David, ANTONELLI, Lucio Angelo, Pinchera, Michele, Kalinowski, William, Deininger, William D., brez, alessandro, Ferrazzoli, Riccardo, Tardiola, Marcello, LOFFREDO, Pasqualino, Ferrant, Kevin, Tamagawa, Toru, Garelick, Benjamin, Head, Michael, Ranganathan, Jaganathan, Scalise, Emanuele, Perri, Matteo, Sciortino, Andrea, Mitchell, Scott, Pilia, Maura, Baggett, Randy M., Massaro, Francesco., Brienza, Daniele, Attina, Primo, Caporale, Ciro, Maddox, Tyler, Mangravati, Elio, Magazzu, Guido, Speegle, Chet O., Minuti, Massimo, Baldini, Luca, Amici, Fabrizio, Pesce-Rollins, Melissa, Mize, Rondal, Mereu, Paolo, Evangelista, Yuri, Di Marco, Alessandro, Di Persio, Giusseppe, Marrocchesi, Alessandra, Painter, Will, Peterson, Colin, Morbidini, Alfredo, Centrone, Mauro, Puccetti, Simonetta, Nguyen, Toan, Costa, Enrico, Lofredo, Pasqualino, Sanchez, Javier, Walden, Amy L., Orsini, Leonardo, Bachetti, Matteo, Sgro, Carmelo, Cardelli, Claudia, Citraro, Saverio, Vimercati, Marco, Ceccanti, Marco, Soffitta, Paolo, Dolan, David, ATTINA', PRIMO, Alexander, Cheryl, Negri, Barbara, Weisskopf, Martin C., Nitschke, Isaac, Nasimi, Hikmat, Reedy, Lee, D'Alba, Elisa, Lucchesi, Leonardo, Antonelli, Angelo, Ratheesh, Ajay, Root, Noah, Bongiorno, Stephen D., D'Amico, Fabio, Allen, D. Zachery, Onizuka, Mitch, Dietz, Kurtis L., Donnarumma, Immacolata, Mauger, David, Barbanera, Mattia, Rankin, John, Bellazzini, Ronaldo, Trois, Alessio, Bladt, Jeff, Thomas, Nicholas E., Ferrie, MacKenzie, Sarra, Paolo, Kelly, Eric, Nuti, Alessio, DI PERSIO, GIUSEPPE, Negro, Michela, Maldera, Simone, Marengo, Marco, Tennant, Allyn F., Boree, Christopher, Paggi, Alessandro, Footdale, Joseph, Castellano, Simone, Osborne, Darren, Foster, Michelle, Mosti, Federico, Lefevre, Carlo, Kolodziejczak, Jeffery J., Pentz, Christina, Weddendorf, Bruce, Manfreda, Alberto, Carpentiero, Rita, Spandre, Gloria, Profeti, Alessandro, Andersen, Jason, Bonino, Rafaella, Valerie, Robert, Schroeder, Christopher, Zanetti, Francesco, Di Lalla, Niccolo, Piazzolla, Raffaele, Pavelitz, Steven D., Sosdian, Kalie, Antoniak, Spencer, Ruswick, Stephanie, Cavalli, Luca, Romani, Roger W., Gunji, Shuichi   +155 more
core   +1 more source

Circulating tumor cell viability during and after radiotherapy mirrors treatment response in cancer patients

Molecular Oncology, EarlyView.
Radiotherapy (RT) response depends on the DNA repair capacity of tumor and host cells. We show that circulating tumor cell (CTC) counts and apoptosis rates before and after RT predict treatment response and outcome, which can be accessed via easily accessible liquid biopsy approaches. Created in BioRender. Wikman, H.
Yvonne Goy, Jana Löptien, Cornelia Coith, Afroditi Nanou, Katharina Hintelmann, Pinnschmidt Hans, Cordula Petersen, Klaus Pantel, Sabine Riethdorf, Kerstin Borgmann, Harriet Wikman   +10 more
wiley   +1 more source

Algorithms for joint activity–attenuation estimation from positron emission tomography scatter

EJNMMI Physics, 2019
Background Attenuation correction in positron emission tomography remains challenging in the absence of measured transmission data. Scattered emission data may contribute missing information, but quantitative scatter-to-attenuation (S2A) reconstruction ...
Yannick Berker, Volkmar Schulz, Joel S. Karp   +2 more
doaj   +1 more source

X-ray Imaging [PDF]

, 2018
In this chapter, the physical principles of X-rays are introduced. We start with a general definition of X-rays compared to other well known rays, e. g., the visible light. In Sec. 7.2, we will learn how X-rays can be generated and how they can be characterized with respect to their energy.
Martin Berger, Qiao Yang, Andreas Maier
openaire   +1 more source

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

Convection-enhanced water evaporation

AIP Advances, 2011
Water vapor is lighter than air; this can enhance water evaporation by triggering vapor convection but there is little evidence. We directly visualize evaporation of nanoliter (2 to 700 nL) water droplets resting on silicon wafer in calm air using a high-
B. M. Weon, J. H. Je, C. Poulard
doaj   +1 more source