Results 31 to 40 of about 40,542 (246)

Low-cost optical manipulation using hanging droplets of PDMS [PDF]

, 2015
We propose and demonstrate a low-cost optical micromanipulation system that makes use of simple microfrabricated components coupled to a smartphone camera for imaging. Layering hanging droplets of polydimethylsiloxane (PDMS) on microscope coverslips, and
Ashkin, Baden, Bellina, Breslauer, Budde, Burnham, Chowdhury, Erickson, Fei, Gambin, Hofmann, Jeong, Lee, Mao, Pralle, Ren, Skandarajah, Smith, Svoboda, Tadmor, Wilbur   +20 more
core   +3 more sources

Daily dosimetric quality control of the MM50 Racetrack Microtron using an electronic portal imaging device [PDF]

, 1995
The MM50 Racetrack Microtron, suited for advanced three-dimensional conformal radiotherapy techniques, is a complex machine in various respects. Therefore, for a number of gantry angles, daily quality control of the absolute output and fluence profiles ...
Dirkx, M.L.P. (Maarten)
core   +5 more sources

The effect and stability of MVCT images on adaptive TomoTherapy. [PDF]

, 2010
Use of helical TomoTherapy-based MVCT imaging for adaptive planning is becoming increasingly popular. Treatment planning and dose calculations based on MVCT require an image value to electron density calibration to remain stable over the course of ...
Paliwal, Bhudatt R, Rong, Yi, Tolakanahalli, Ranjini, Yadav, Poonam   +3 more
core   +1 more source

Mechanism of droplet-formation in a supersonic microfluidic spray device [PDF]

, 2020
Spray drying is an approach employed in automotive, food, and pharmaceutical industries as a robust and cost efficient liquid atomization technique offering direct control over droplet dimensions.
Charmet, Jérôme, Daly, R., Hakala, T. A., Herling, T. W., Kartanas, T., Knowles, T. P. J., Levin, A., Toprakcioglu, Z.   +7 more
core   +1 more source

Intra- and inter-radiation therapist reproducibility of daily isocenter verification using prostatic fiducial markers

Radiation Oncology, 2006
Background We sought to determine the intra- and inter-radiation therapist reproducibility of a previously established matching technique for daily verification and correction of isocenter position relative to intraprostatic fiducial markers (FM ...
Miller Robert W, Cannon Angela, Arora Barbara C, Li Guang, Xie Huchen, Guion Peter, Havelos Jan, Jocelyn Lucresse, Ayele Asna, Susil Robert C, Ning Holly, Ullman Karen L, Norman Coleman C, Camphausen Kevin, Ménard Cynthia   +14 more
doaj   +1 more source

Assessment of the dosimetric performance of the Mobius3D against portal dose measurements in patient-specific quality assurance

Journal of Medical Physics, 2023
Aim: The Mobius3D software addresses limitations lacking in measurement-based methods in patient-specific quality assurance (QA). The objective of this study was to validate its dosimetric performance against conventionally used portal dose measurements ...
Yasmine Joy M. Labagnoy, Sornjarod Oonsiri, Mananchaya Vimolnoch, Sakda Kingkaew   +3 more
doaj   +1 more source

Color-decoupled photo response non-uniformity for digital image forensics [PDF]

, 2012
The last few years have seen the use of photo response non-uniformity noise (PRNU), a unique fingerprint of imaging sensors, in various digital forensic applications such as source device identification, content integrity verification and authentication.
Li, Chang-Tsun, Li, Yue
core   +2 more sources

Utilization of Electronic Portal Imaging Device (EPID) For Setup Verification and Determination of Setup Margin in Head and Neck Radiation Therapy [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: Radiation therapy involves a multistep procedure; therefore, the error in patient set up is an inherent part of the treatment. Main purpose of this study was to determine the clinical target volume (CTV) to planning target volume (PTV) in ...
vajiheh vejdani noghreiyan, shahrokh naseri, Mehdi Momennezhad   +2 more
doaj   +1 more source

Comparison of EPID portal dosimetry verification and RadCalc dose verification for VMAT treatment plans

Nowotwory
INTRODUCTION: Dosimetry verification is required before starting each treatment. The legal regulations do not clearly define one method of plan verification.
Adam Gądek, Dominika Plaza, Łukasz Sroka, Marta Reudelsdorf-Ullmann, Krzysztof Ślosarek   +4 more
doaj   +1 more source

Comparing Accuracy of Thermoplastic Mask versus Commercial Bra for the Immobilization of Pendulous Breast During Radiation Therapy Treatment: A Retrospective Cohort Study

Advances in Radiation Oncology, 2021
Purpose: This study aimed to compare thermoplastic mask with bra in terms of setup reproducibility and immobilization of pendulous breasts during radiation therapy (RT).
Zaheeda Mulla, BTech (RT), Omar Iskanderani, MD, FRCP, Amina Weber, Diploma (RT), Abdullah AlMohamad, Diploma (RT), Mohammed Sheikh Al-Amoodi, MD, Shamel Soaida, MBBCh, MSc, MD   +5 more
doaj   +1 more source