Results 1 to 10 of about 166,547 (260)

Determinants of target absorbed dose in radionuclide therapy [PDF]

open access: yesZeitschrift für Medizinische Physik, 2023
In radionuclide therapy, activity kinetics in tissues determine the absorbed doses administered and thus efficacy and side effects of treatment. The objective of this work was to derive expressions for the parameters affecting the absorbed dose to a ...
Heribert Hänscheid   +2 more
doaj   +2 more sources

Multiple vertebrae improves precision in image-based bone marrow absorbed dose estimation in [177Lu]Lu–DOTATATE treatment [PDF]

open access: yesEJNMMI Physics
Background The bone marrow is a critical dose limiting organ in patients receiving radionuclide therapy, but image-based bone marrow dosimetry is not routinely performed in clinical practice. High noise levels and the limited number of vertebral cavities
Katja Smits   +8 more
doaj   +2 more sources

Study of absorbed dose in important organs during helical CT chest scan using MCNP code and MIRD phantom

open access: yesThe Egyptian Journal of Radiology and Nuclear Medicine, 2016
Purpose: Study of absorbed dose in the heart, breast, stomach, lungs, thyroid, kidney, and liver during CT scan of the chest at different tube voltages using Medical Internal Radiation Dose (MIRD) phantom and MCNP code at values of tube voltage 80 kVp ...
Tawfik Abo Shdeed   +3 more
doaj   +3 more sources

Evaluation of Dosimetric Parameters for Tumor Therapy with 177Lu and 90Y Radionuclides in Gate Monte Carlo Code [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2021
Background: 90Y and 177Lu are two well-known radionuclides used in radionuclide therapy to treat neuroendocrine tumors. Objective: This current study aims to evaluate, compare and optimize tumor therapy with 90Y and 177Lu for different volumes of the ...
Milad Peer-Firozjaei   +3 more
doaj   +1 more source

Establishment of Diagnostic Reference Levels and Estimation of Effective Dose from Computed Tomography Head Scans at a Tertiary Hospital in South Africa [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: Head scans are the most frequently performed computed tomography (CT) examinations worldwide. However, there is growing concern over the probability of increased cancer risks among the exposed populations. Diagnostic reference levels (DRLs)
Mpumelelo Nyathi
doaj   +1 more source

EVALUATION OF PATIENT ABSORBED DOSE OF CONVENTIONAL X-RAYS USING DIRECT METHOD IN SOME HOSPITALS IN PORT HARCOURT, NIGERIA [PDF]

open access: yesActa Scientifica Malaysia, 2022
In this work, entrance skin dose was used to evaluate patient absorption dose of conventional X-rays using a direct method in some hospitals in Port-Harcourt, Rivers State.
Etim   +4 more
doaj   +1 more source

Review: Dosimetry in Dental Radiology [PDF]

open access: yesKirkuk Journal of Science, 2021
The aim of this study was to determine, by a systematic review, the radiation doses of different dental x-ray devices, their particular effects, and the cumulative results of various studies done with various dosimeters.
Abdalrahman Al-Salihi   +5 more
doaj   +1 more source

A comparison of in-air and in-water calibration of a dosimetry system used for radiation dose assessment in cancer therapy [PDF]

open access: yesNuclear Technology and Radiation Protection, 2010
An accurate calibration of the therapy level radiation dosimetry system has a pivotal role in the accuracy of dose delivery to cancer patients. The two methods used for obtaining a tissue equivalent calibration of the system: air kerma calibration and ...
Arshed Waheed   +6 more
doaj   +1 more source

Comparison of Numerically Simulated and Measured Dose Rates for Gamma-Irradiation Facility

open access: yesEast European Journal of Physics, 2022
The article provides a description of steps which were made to make comparison between numerically simulated and measured dose rates in Izotop gamma-irradiation facility (Budapest, Hungary) Numerical simulation was carried out with the help of software ...
Volodymyr Morgunov   +4 more
doaj   +1 more source

A Feasibility Study to Reduce the Contamination of Photoneutrons and Photons in Organs/Tissues during Radiotherapy [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: Due to out-of-field effects in radiation therapy, the determination and reduction of both unwanted photon and photoneutron doses are essential for the reasonable assessment of the risks to healthy tissues.
Roya Boodaghi malidarre   +3 more
doaj   +1 more source

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