Results 11 to 20 of about 66,992 (337)

Dosimetric Comparison of IMRT with 3D-CRT Regarding Their Contribution to the Treatment Plan Optimization Using Rando Phantom with a Realistic Lung Cancer Radiotherapy Treatment Planning [PDF]

open access: yesIranian Journal of Medical Physics, 2021
Introduction: This study compared a three-dimensional conformal radiation therapy (3D-CRT) with a recently implemented intensity modulation radiation therapy (IMRT) technique performed in the irradiation of lung cancer.
Karim Benkahila   +3 more
doaj   +1 more source

Dosimetric characterization of large photon fields (Varian, Clinac 2100c, X-6mv) by using standard measurement approach [PDF]

open access: yesArchive of Oncology, 2002
The most optimal dosimetry model for the application of large photon fields (dimensions larger than 40x40 cm) at extended focus-phantom/patient distances has not been adopted yet.
Apostolidis Georgios   +2 more
doaj   +1 more source

Application of mri for improved local control in complex radiotherapy of cervical cancer [PDF]

open access: yesArchive of Oncology, 2006
Background: The aim of this study was to analyze the use of magnetic resonance imaging (MRI) as a modern medical imaging technique in radiotherapy with special emphasis on the integration of MRI and a novel technique in brachytherapy to optimize ...
Hadjiev Janaki   +6 more
doaj   +1 more source

Comparison of Air-Gaps Effect in a Small Cavity on Dose Calculation for 6 MV Linac [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2021
Background: Many authors stated that cavities or air-gaps were the main challenge of dose calculation for head and neck with flattening filter medical linear accelerator (Linac) irradiation.
A Azzi, D Ryangga, S A Pawiro
doaj   +1 more source

Interstitial brachytherapy with 192Ir in vulvar cancer [PDF]

open access: yesArchive of Oncology, 2006
Vulvar cancer accounts for 5% of all female genital cancers and 1% of all malignancies in women. A female patient, 78 years old, with diagnosed squamous cell carcinoma of vulva stage II, was admitted to our Institution in January 2004. An exophytic tumor,
Erak Marko   +5 more
doaj   +1 more source

Feasibility of Megavoltage CT for High-Dose Retrospective Planning of Helical Tomotherapy and Linac Treatment Plans: Hepatocellular Carcinoma Cancer Case [PDF]

open access: yesIranian Journal of Medical Physics, 2022
Introduction: This work aimed to investigate the use of megavoltage CT (MVCT) images for retrospective planning in high-dose and low-fractionation radiation techniques for Helical Tomotherapy and Linac.Material and Methods: This work used pre-treatment ...
Ahmad Syafi   +4 more
doaj   +1 more source

Identification of differentially expressed genes in cervical carcinoma after radiotherapy [PDF]

open access: yesJichu yixue yu linchuang, 2022
Objective To study the effect of radiotherapy on gene expression in cervical cancer tissues and to find the role of differentially expressed genes in sensitivity and resistance to radiotherapy.
BAI Jing, LIU Na, DING Li, LEI Li, NI Rui, YAN Shao-chun, SHAO Guo
doaj   +1 more source

Optimization of PET protocol and interrater reliability of 18F-PSMA-11 imaging of prostate cancer [PDF]

open access: yes, 2020
Background Several scan parameters for PET imaging with F-18-PSMA-11 such as dosage, acquisition time and scan duration were evaluated to determine the most appropriate scan protocol, as well as the effect of furosemide administration on lesion ...
Achten, Eric   +7 more
core   +2 more sources

RISK FACTORS FOR NEUTROPENIA DURING POSTOPERATIVE ADJUVANT RADIOTHERAPY FOR BREAST CANCER [PDF]

open access: yes精准医学杂志, 2023
Objective To explore the risk factors for neutropenia (grade 2 or higher) during postoperative adjuvant radiotherapy for breast cancer. Methods A total of 93 patients with breast cancer treated by postoperative adjuvant radiotherapy in Shaanxi Provincial
JIN Long, CAO Fei, ZHANG Li, MA Shaojun
doaj   +1 more source

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