Results 91 to 100 of about 114,769,226 (147)

Dosimetric accuracy of Gafchromic EBT2 and EBT3 film for in vivo dosimetry

open access: yes, 2013
Radiochromic film has the potential to provide accurate in vivo dosimetry measurements. However, it is not known whether small film pieces can still provide accurate dosimetric results. The use of small film pieces is of particular interest in regions of
Moylan, Rebecca   +2 more
core   +1 more source

Methodological Design for Three‐Dimensional Assessment of Maxillary and Mandibular Impacted Canines by Cone‐Beam Computed Tomography: A Scoping Review

open access: yesOrthodontics &Craniofacial Research, EarlyView.
ABSTRACT To map and critically synthesize the methodological approaches used for the CBCT‐based evaluation of maxillary and mandibular impacted canines (ICs), with emphasis on imaging protocols, anatomical variables, and diagnostic frameworks. This scoping review followed PRISMA‐ScR guidelines.
Marcela Gurgel   +9 more
wiley   +1 more source

Automatic in vivo portal dosimetry of all treatments.

open access: yes, 2013
At our institution EPID (electronic portal imaging device) dosimetry is routinely applied to perform in vivo dose verification of all patient treatments with curative intent since January 2008.
Mijnheer, B   +10 more
core   +1 more source

Chemoenzymatic Radiosynthesis of a Gluconate Transporter‐Targeted In Vivo Bacterial Sensor From Clinical [18F]FDG

open access: yesAngewandte Chemie, Volume 138, Issue 41, 5 October 2026.
An efficient radiosynthesis of fluorine‐18 labeled gluconic acid ([18F]FGA) was developed using two readily available materials, 2‐deoxy‐2‐[18F]fluoro‐D‐glucose ([18F]FDG) and glucose oxidase. [18F]FGA is highly specific for bacterial gluconate metabolism mediated by gluconate permease (GntP) and gluconate kinase (GntK), with rapid clearance, low off ...
Sang Hee Lee   +7 more
wiley   +2 more sources

Hydroxyaldehyde and formyl photoproducts of protoporphyrin IX formed under photodynamic diagnosis and therapy irradiation conditions

open access: yesPhotochemistry and Photobiology, EarlyView.
Photoproducts of the photosensitizer protoporphyrin IX (PpIX) may have diagnostic and therapeutic relevance in photodynamic diagnosis (PDD) and photodynamic therapy (PDT). These photoproducts possess fluorescence and photosensitizing properties and could serve as a complementary dosimetry index alongside photosensitizer photobleaching. The formation of
Sochi J. Ogbonna   +2 more
wiley   +1 more source

Cis‐urocanic acid formation following far‐UVC exposure and associated signaling responses in keratinocytes

open access: yesPhotochemistry and Photobiology, EarlyView.
Far‐UVC (200–235 nm) has emerged as a safe and effective indoor disinfection tool, but effects on skin immunomodulation remain unclear. This study demonstrates that 222 nm far‐UVC converts trans‐urocanic acid (UCA) to its biologically active cis isomer at levels comparable with solar radiation. In keratinocytes, far‐UVC alone caused modest increases in
Lizzie Thomas   +4 more
wiley   +1 more source

The effect of photodynamic therapy in head and neck cancer: A comprehensive review of in vivo models

open access: yesPhotochemistry and Photobiology, EarlyView.
This review evaluates Photodynamic Therapy (PDT) in in vivo head and neck cancer models. PDT effectively generates ROS, reducing tumor growth, cell proliferation and angiogenesis while enhancing survival and immune responses. However, methodological heterogeneity highlights the urgent need for standardized dosimetric protocols to ensure reproducibility
Bibiana Padilha de Menezes da Silva   +5 more
wiley   +1 more source

Far‐field bioluminescent immune cell–mediated photodynamic therapy is limited by photon flux

open access: yesPhotochemistry and Photobiology, EarlyView.
Bioluminescent immune cell‐mediated photodynamic therapy uses tumor‐homing, luciferase‐expressing immune cells as internal light sources to activate photosensitizers in deep‐seated and/or micrometastatic tumors. Using both experiments and computational simulations, we find that this approach delivers insufficient far‐field energy to tumor cells to ...
Ji Tae Park   +8 more
wiley   +1 more source

Avian Eggshell Evolutionary Adaptations Inform Biomimetic Strategies for Next‑Generation Precision Cancer Theranostics

open access: yesAdvanced Oncology, Volume 1, Issue 1, December 2026.
ABSTRACT The avian eggshell is a sophisticated, multi‐functional biocomposite and, more importantly, an autonomous life‐support system evolved to safeguard embryonic development across dynamic and hostile environments. Discussing eggshell‐inspired biomaterials beyond simple structural imitation, this review translates these evolutionary survival ...
Zhiqiang Liu   +11 more
wiley   +1 more source

Quality assurance in total body irradiation by in vivo dosimetry [PDF]

open access: yes, 1996
After establishing accuracy requirements for in vivo dosimetry in total body irradiation, the technical and systematical limitations of the commonly used detectors are summarized.
Rittmann, K.L.; Abteilung Strahlentherapie und Spezielle Onkologie, Medizinische Hochschule Hannover, D 30 623 Hannover, Germany
core   +1 more source

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