Results 111 to 120 of about 5,204,838 (351)

Dosimetric accuracy and radiobiological implications of ion computed tomography for proton therapy treatment planning

Physics in Medicine and Biology, 2019
Ion computed tomography (iCT) represents a potential replacement for x-ray CT (xCT) in ion therapy treatment planning to reduce range uncertainties, inherent in the semi-empirical conversion of xCT information into relative stopping power (RSP).
S. Meyer, F. Kamp, T. Tessonnier, A. Mairani, C. Belka, D. Carlson, C. Gianoli, K. Parodi   +7 more
semanticscholar   +1 more source

Upconversion Nanoparticles Embedded Photonic Contact Lens for Transepithelial Corneal Crosslinking Using Hyaluronate – Riboflavin Conjugate

Advanced Functional Materials, EarlyView.
A minimally invasive, transepithelial corneal cross‐linking (TE‐CXL) approach is presented using upconversion nanoparticles (UCNPs)‐loaded contact lenses (UCLs), after topical delivery of hyaluronate–riboflavin conjugates. The NIR‐to‐UV/blue light conversion by UCNPs in a UCL can activate riboflavin for TE‐CXL, resulting in the biomechanical strength ...
Gibum Lee, Inhoo Choi, Anara Molkenova, Yengwoo Son, Seungmin Yang, Mina Kwon, Tae‐Im Kim, Ki Su Kim, Sei Kwang Hahn   +8 more
wiley   +1 more source

The indication of palliative whole-brain radiotherapy for patients with brain metastases: a simple prognostic scoring system in the era of stereotactic radiosurgery

BMC Cancer
Background Stereotactic irradiation has become the mainstay treatment for brain metastases (BM), and whole-brain radiotherapy (WBRT) is often used for symptom palliation.
Toshiaki Hirose, Shoichi Deguchi, Kazuaki Yasui, Minoru Inoue, Tsuyoshi Onoe, Hirofumi Ogawa, Hirofumi Asakura, Koichi Mitsuya, Hideyuki Harada, Shigeyuki Murayama, Nakamasa Hayashi, Tetsuo Nishimura, Ryuta Saito   +12 more
doaj   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

Advanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee, Sojin Kim, Myeongeun Lee, Kyoungsuk Jin, Jimin Park   +4 more
wiley   +1 more source

Topogram and 3DCT geometry calibration for image-guided proton therapy with in-room CT-on-rails

Physics and Imaging in Radiation Oncology
In-room computer tomography (CT) on-rails scanners are available in proton therapy centers but often limited to control imaging, due to geometric distortion and lack of integration.
Giovanni Fattori, Riccardo Via, Antony J. Lomax, Sairos Safai   +3 more
doaj   +1 more source

Predicting late magnetic resonance image changes in glioma patients after proton therapy

Acta oncologica, 2019
Proton beam therapy (PBT) is expected to reduce radiation-induced side-effects compared to state-of-the-art photon treatments as the physical properties of protons offer the possibility to spare no...
J. Eulitz, E. Troost, F. Raschke, E. Schulz, B. Lutz, Almut Dutz, Steffen Löck, Patrick Wohlfahrt, Wolfgang Enghardt, C. Karpowitz, Mechthild Krause, A. Lühr   +11 more
semanticscholar   +1 more source

Endothelial Cells Angiogenesis in Sulfated Glycosaminoglycan (GAG) Hydrogels Enhanced by Bioactive Glass‐Released Ions

Advanced Functional Materials, EarlyView.
A mechanically tunable hydrogel composed of gelatin, chondroitin sulfate and laminin promotes angiogenesis in vitro without the supplement of growth factors. Endothelial cells morphogenesis was further enhanced by medium conditioned with bioactive glass 58S‐released ions (Ca and Si), thus offering a promising strategy to vascularize 3D tissue ...
Marco Piazzoni, Ilaria Borghi, Francesca Cadamuro, Sophia Dalfino, Riccardo Campanile, Sofia Nizzolo, Valeria Cassina, Francesca Tallia, Julian R. Jones, Francesco Mantegazza, Sabrina Bertini, Lorenzo Moroni, Francesco Nicotra, Laura Russo   +13 more
wiley   +1 more source

A Monte Carlo feasibility study for neutron based real-time range verification in proton therapy

Scientific Reports, 2019
Uncertainties in the proton range in tissue during proton therapy limit the precision in treatment delivery. These uncertainties result in expanded treatment margins, thereby increasing radiation dose to healthy tissue.
K. Ytre-Hauge, K. Skjerdal, J. Mattingly, I. Meric   +3 more
semanticscholar   +1 more source

4D Printing of Self‐Immolative Polymers

Advanced Functional Materials, EarlyView.
The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart, Philipp Mainik, Pia S. Klee, Eva Blasco   +3 more
wiley   +1 more source

A proof-of-concept study of direct magnetic resonance imaging-based proton dose calculation for brain tumors via neural networks with Monte Carlo-comparable accuracy

Physics and Imaging in Radiation Oncology
Background and purpose: Proton therapy currently relies on computed tomography (CT) imaging despite magnetic resonance imaging’s (MRI) superior soft-tissue contrast.
Muheng Li, Carla Winterhalter, Xia Li, Sairos Safai, Antony Lomax, Ye Zhang   +5 more
doaj   +1 more source