Results 11 to 20 of about 1,545,857 (315)

Dosage compensation in birds [PDF]

, 2001
The Z and W sex chromosomes of birds have evolved independently from the mammalian X and Y chromosomes [1]. Unlike mammals, female birds are heterogametic (ZW), while males are homogametic (ZZ).
Derek McBride, McQueen, H A; id_orcid, Gino Miele, McBride, D, Miele, G, Clinton, M, Bird, A P; id_orcid, Heather A McQueen, Michael Clinton, Adrian P Bird   +9 more
core   +1 more source

Perturbation Effect of Fiducial Marker on 3D Dose Distribution in External Surrogates Radiotherapy [PDF]

Iranian Journal of Medical Physics, 2021
Introduction: Tumor motion is a challenging issue in radiotherapy, which complicates the process of tumor delineation, localization, and dose delivery. External surrogate radiotherapy is one of the available strategies that provides motion dataset for a ...
Ahmad Esmaili Torshabi, Masoud Taghipour
doaj   +1 more source

Local Diagnostic Reference Levels for Some Common Diagnostic X-Ray Examinations In Sabzevar County of Iran [PDF]

Iranian Journal of Medical Physics, 2018
Introduction: Diagnostic reference level (DRL) is a useful tool for the promotion of optimization. The national DRLs (NDRLs) are useful, brief, and robust guidelines for optimizing radiation protection in a country.
Hassan Zarghani, Mohammadtaghi bahreyni
doaj   +1 more source

The Chromosomal High-Affinity Binding Sites for the Drosophila Dosage Compensation Complex [PDF]

, 2008
Dosage compensation in male Drosophila relies on the X chromosome-specific recruitment of a chromatin-modifying machinery, the dosage compensation complex (DCC). The principles that assure selective targeting of the DCC are unknown.
Grimaud, Charlotte, Peter B Becker, Mitterweger Angelika, Grimaud Charlotte, Becker Peter B., Tobias Straub, Straub, Tobias, Mitterweger, Angelika, Peter B. Becker, Becker, Peter B., Gilfillan Gregor D., Gilfillan, Gregor D., Gregor D Gilfillan, Charlotte Grimaud, Angelika Mitterweger, Gregor D. Gilfillan, Straub Tobias   +16 more
core   +2 more sources

THE USE OF THE O-ARM® OR RADIOSCOPE IN SPINE SURGERY: SYSTEMATIC REVIEW WITH META-ANALYSIS [PDF]

Coluna/Columna
The great advances in using new devices and imaging systems in surgeries aim to reproduce an ideal and safe scenario for the surgeon, the team, and the patient. New systems and devices are constantly available to demonstrate and facilitate intraoperative
Sylvio Mistro Neto, Jessica Yumi Matuoka, Haliton Alves de Oliveira Junior, Priscila Mina Falsarella, Marcelo Italo Risso Neto   +4 more
doaj   +1 more source

Exploration of clinical preferences in treatment planning of radiotherapy for prostate cancer using Pareto fronts and clinical grading analysis

Physics and Imaging in Radiation Oncology, 2020
Introduction: Radiotherapy treatment planning is a multi-criteria problem. Any optimization of the process produces a set of mathematically optimal solutions.
A. Kyroudi, K. Petersson, E. Ozsahin, J. Bourhis, F. Bochud, R. Moeckli   +5 more
doaj   +1 more source

Comparisons of Hounsfield Unit Linearity between Images Reconstructed using an Adaptive Iterative Dose Reduction (AIDR) and a Filter Back-Projection (FBP) Techniques [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: The HU linearity is an essential parameter in a quantitative imaging and the treatment planning systems of radiotherapy. Objective: This study aims to evaluate the linearity of Hounsfield unit (HU) in applying the adaptive iterative dose ...
I Suyudi, C Anam, H Sutanto, P Triadyaksa, T Fujibuchi   +4 more
doaj   +1 more source

A Phantom Study for the Optimization of Image Quality and Radiation Dose for Common Radiographic Examinations in Digital Radiography [PDF]

Iranian Journal of Medical Physics, 2018
Introduction: Phantom studies facilitate the implementation of radiation dose surveillance as a function of radiographic technical parameters for minimizing patient radiation dose.
Soo-Foon Moey, Zubir Shazli
doaj   +1 more source

Association of ARI with cancer type, treatment options and dosage of radiation.

, 2022
Association of ARI with cancer type, treatment options and dosage of radiation.
Stephen O. Nyarko (13154840), Evangeline Obodai (5733764), Eric Behene (7484801), Selassie Kumordjie (10645166), Gifty Mawuli (5743061), Erasmus N. Kotey (13154837), Clara Yeboah (10866657), Bright Agbodzi (7484795), John Kofi Odoom (5733767), Osbourne Quaye (4652302), Jeannette Bentum (13154843), Hannah Ayettey Anie (13154831), William K. Ampofo (12733022), James Aboagye (9954590), Augustina K. Arjarquah (13154828), Michael Aning Osei (13154834), Andrew Letizia (12235089), Joseph H. K. Bonney (6631328), Keren Attiku (4797450)   +18 more
core   +1 more source

Evaluation of Risk of Secondary Thyroid Cancer Caused by Neutron Dose Equivalent from Brain Tumor 3D-Conformal Radiation Therapy (3D-CRT)

مجله دانشکده پزشکی اصفهان, 2020
Background: Thyroid cancer is one of the most common secondary malignancies as a result of receiving therapeutic doses to the head and neck. In this study, the probability of secondary thyroid cancer risk due to neutron contamination of 15 MV Siemens ...
Sohail Elmtalab, Iraj Abedi, Mohammadhosein Choopan Dastjerdi, Ahmad Shanei   +3 more
doaj   +1 more source