Results 21 to 30 of about 1,147,289 (383)

Mixed-Cell Type Choroidal Melanoma in a Middle-Aged Woman

Revista Brasileira de Cancerologia, 2023
Introduction: Melanomas are malignant neoplasms that occur in various anatomical sites, including the eye. Ocular melanomas account for 5% of all melanomas and are mainly described in Caucasian and older individuals.
Mirelly Aparecida Nolasco Frinhani , Rebeca Alves Pestana, Giuliane Stefane Braga Dantas, Matheus Alves Bastianello , Filipe de Carvalho Emery Ferreira, Karina Coutinho Altoé, Marcielle Grobério Franzin, Clairton Marcolongo-Pereira, Orlando Chiarelli-Neto   +8 more
doaj   +1 more source

Image quality comparisons of coil setups in 3T MRI for brain and head and neck radiotherapy simulations

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza, Jeffrey P. Guenette, Christian V. Guthier, Steven Hatch, Alexander Marques, Lisa Singer, Jonathan D. Schoenfeld   +6 more
wiley   +1 more source

Radiation retinopathy in patients treated for sinus and epipharingeal malignancies [PDF]

Vojnosanitetski Pregled, 2005
Background. Radiation retinopathy is vasculopathy induced by ionising radiation delivered by either brachytherapy or teletherapy for ocular and nonocular malignancies.
Kosanović-Jaković Natalija, Risimić Dijana, Petrović Lidija, Milenković Svetislav   +3 more
doaj   +1 more source

β-Adrenoreceptors as Therapeutic Targets for Ocular Tumors and Other Eye Diseases—Historical Aspects and Nowadays Understanding

International Journal of Molecular Sciences, 2023
β-adrenoreceptors (ARs) are members of the superfamily of G-protein-coupled receptors (GPCRs), and are activated by catecholamines, such as epinephrine and norepinephrine.
E. Böhm, B. Stoffelns, A. Gericke
semanticscholar   +1 more source

Evaluation of intrafraction couch shifts for proton treatment delivery in head‐and‐neck cancer patients: Toward optimal imaging frequency

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose Treatment planning for head‐and‐neck (H&N) cancer, in particular oropharynx, nasopharynx, and paranasal sinus cases, at our center requires noncoplanar proton beams due to the complexity of the anatomy and target location. Targeting accuracy for all beams is carefully evaluated by using image guidance before delivering proton beam ...
Nrusingh C. Biswal, Dario B. Rodrigues, Weiguang Yao, Jason K. Molitoris, Matthew E. Witek, Shifeng Chen   +5 more
wiley   +1 more source

Clinicopathological features of patients with wide local excision of eyelid malignant neoplasms: a more than five years retrospective study from China

BMC Ophthalmology, 2022
Background To investigate the correlation between the clinical and pathological characteristics and outcomes in patients with eyelid malignant tumors underwent wide local excision.
Yuanyuan Han, M. Kong, Yan-Ping Luo, Bin Sun, Zhiqiang Wang, Hong Zhang   +5 more
semanticscholar   +1 more source

Statistical process control to monitor use of a web‐based autoplanning tool

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the use of statistical process control (SPC) for quality assurance of an integrated web‐based autoplanning tool, Radiation Planning Assistant (RPA). Methods Automatically generated plans were downloaded and imported into two treatment planning systems (TPSs), RayStation and Eclipse, in which they were recalculated using ...
Hunter Mehrens, Raphael Douglas, Mary Gronberg, Kelly Nealon, Joy Zhang, Laurence Court   +5 more
wiley   +1 more source

Treatment planning with a 2.5 MV photon beam for radiation therapy

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi, Chris Hayes, Louise Belshaw, Mark Grattan, Rao Khan, James L. Gräfe   +5 more
wiley   +1 more source

Response Evaluation of Choroidal Melanoma After Brachytherapy Using Diffusion-Weighted Magnetic Resonance Imaging (DW-MRI): Preliminary Findings

Frontiers in Oncology, 2020
Purpose: To evaluate the role of diffusion-weighted magnetic resonance imaging (DW-MRI) in the assessment of therapeutic response in patients with choroidal melanoma treated with brachytherapy.Materials and Methods: We performed a prospective, unicentric
Flávia B. C. S. N. Bitencourt, Almir G. V. Bitencourt, Martha M. M. Chojniak, Juliana O. Souza, Douglas G. Castro, Antônio Cassio A. Pellizzon, Rubens Chojniak   +6 more
doaj   +1 more source

Hodgkin lymphoma in patient with primary immunodeficiency: clinical features and treatment approaches

Онкогематология, 2022
Primary immunodeficiencies (PID) are genetically determined irreversible disorders of structure and/or functions of the immune system's cellular and humoral components, accompanied by frequent infectious diseases and contributing to the development of ...
K. I. Utesheva, E. S. Belyaeva, T. T. Valiev, A. A. Odzharova   +3 more
doaj   +1 more source