Results 91 to 100 of about 66,716 (273)

Implementation and validation of a commercial portal dosimetry software for intensity-modulated radiation therapy pre-treatment verification

Journal of Medical Physics, 2010
Electronic portal imaging devices (EPIDs) are extensively used for obtaining dosimetric information of pre-treatment field verification and in-vivo dosimetry for intensity-modulated radiotherapy (IMRT). In the present study, we have implemented the newly
Varatharaj C, Moretti Eugenia, Ravikumar M, Malisan Maria, Supe Sanjay, Padovani Renato   +5 more
doaj  

In vivo dosimetry in external beam photon radiotherapy: Requirements and future directions for research, development, and clinical practice

Physics and Imaging in Radiation Oncology, 2020
External beam radiotherapy with photon beams is a highly accurate treatment modality, but requires extensive quality assurance programs to confirm that radiation therapy will be or was administered appropriately.
Igor Olaciregui-Ruiz, Sam Beddar, Peter Greer, Nuria Jornet, Boyd McCurdy, Gabriel Paiva-Fonseca, Ben Mijnheer, Frank Verhaegen   +7 more
doaj   +1 more source

Search for a Metallic Dangling-Bond Wire on $n$-doped H-passivated Semiconductor Surfaces

, 2016
We have theoretically investigated the electronic properties of neutral and $n$-doped dangling bond (DB) quasi-one-dimensional structures (lines) in the Si(001):H and Ge(001):H substrates with the aim of identifying atomic-scale interconnects exhibiting ...
Brandimarte, Pedro, Engelund, Mads, Frederiksen, Thomas, Garcia-Lekue, Aran, Papior, Nick, Sanchez-Portal, Daniel   +5 more
core   +1 more source

Multimodal Wearable Biosensing Meets Multidomain AI: A Pathway to Decentralized Healthcare

Advanced Science, EarlyView.
Multimodal biosensing meets multidomain AI. Wearable biosensors capture complementary biochemical and physiological signals, while cross‐device, population‐aware learning aligns noisy, heterogeneous streams. This Review distills key sensing modalities, fusion and calibration strategies, and privacy‐preserving deployment pathways that transform ...
Chenshu Liu, Haolin Fan, Minwoo Kim, Tong Zhou, Pinyi Yang, Lingdi Zhao, Yiran Wang, Ziyuan Che, Chia‐Wei Liu, Bingbing Li, Yangzhi Zhu   +10 more
wiley   +1 more source

A hybrid conformal planning technique with solitary dynamic portal for postmastectomy radiotherapy with regional nodes

Journal of Medical Physics, 2017
Purpose: This study focuses on incorporation of a solitary dynamic portal (SDP) in conformal planning for postmastectomy radiotherapy (PMRT) with nodal regions with an intention to overcome the treatment planning limitations imposed by conventional ...
K Mohamathu Rafic, B S Timothy Peace, S Ebenezer Suman Babu, I Rabi Raja Singh   +3 more
doaj   +1 more source

Low-dose megavoltage cone-beam CT imaging using thick, segmented scintillators [PDF]

, 2011
Megavoltage, cone-beam computed tomography (MV CBCT) employing an electronic portal imaging device (EPID) is a highly promising technique for providing soft-tissue visualization in image-guided radiotherapy.
Antonuk, Larry E, Choroszucha, Richard B, El-Mohri, Youcef, Jiang, Hao, Liu, Langechuan, Zhao, Qihua   +5 more
core   +1 more source

Evaluation of positional accuracy of the Varian's exact-arm and retractable-arm support electronic portal imaging device using intensity-modulated radiotherapy graticule phantom

Journal of Cancer Research and Therapeutics, 2019
Purpose: The aim of the present study was to compare the positional accuracy of varian's exact-arm (E-arm) and retractable-arm (R-arm) supporting electronic portal imaging device (EPID) systems (amorphous silicon flat-panel detector) using the intensity ...
Ranjit Singh, H. Kainth, Sachin Dev, Gurjot Singh, D. Mehta, J. Shahi, Baljinder Singh, T. Verma   +7 more
semanticscholar   +1 more source

Risk Factors for Small‐for‐Size Syndrome Grade B/C After Simultaneous Splenectomy in Adult Living‐Donor Liver Transplantation

Annals of Gastroenterological Surgery, EarlyView.
In a single‐center cohort of 577 adult LDLT recipients who underwent simultaneous splenectomy, clinically significant SFSS grade B/C (ILTS‐iLDLT‐LTSI 2023) occurred in 18.2% and was associated with inferior graft survival. Multivariate analysis identified MELD ≥ 30, NLR ≥ 4.5, and donor age ≥ 50 years as independent risk factors, which risk rising ...
Kyohei Yugawa, Takeo Toshima, Shinji Itoh, Takashi Motomura, Shohei Yoshiya, Norifumi Iseda, Tomoharu Yoshizumi   +6 more
wiley   +1 more source

Evaluation of automated pre-treatment and transit in-vivo dosimetry in radiotherapy using empirically determined parameters

Physics and Imaging in Radiation Oncology, 2020
Background and purpose: First reports on clinical use of commercially automated systems for Electronic Portal Imaging Device (EPID)-based dosimetry in radiotherapy showed the capability to detect important changes in patient setup, anatomy and external ...
Evy Bossuyt, Reinhilde Weytjens, Daan Nevens, Sarah De Vos, Dirk Verellen   +4 more
doaj   +1 more source

Focal Spot, Spring 2003 [PDF]

, 2003
https://digitalcommons.wustl.edu/focal_spot_archives/1093/thumbnail ...

core   +1 more source