نتایج جستجو برای: magnification

تعداد نتایج: 6513  

Journal: :Monthly Notices of the Royal Astronomical Society 2002

Journal: :Australian Dental Journal 2009

Journal: :Symposium - International Astronomical Union 1996

Journal: :World Journal of Gastroenterology 2011

Journal: :IEEE Transactions on Biomedical Engineering 2019

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2020

Journal: :Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics 2015
Hossein Arabi Ali Reza Kamali Asl Mohammad Reza Ay Habib Zaidi

OBJECTIVE The purpose of this work is to evaluate the impact of optimization of magnification on performance parameters of the variable resolution X-ray (VRX) CT scanner. METHODS A realistic model based on an actual VRX CT scanner was implemented in the GATE Monte Carlo simulation platform. To evaluate the influence of system magnification, spatial resolution, field-of-view (FOV) and scatter-...

Journal: :Clinical & experimental optometry 2002
Allen C Y Cheong Jan E Lovie-Kitchin Alex R Bowers

BACKGROUND In the past, practitioners have used distance and/or near visual acuity (VA) to calculate required magnification for low vision aids. Magnification was usually under-estimated when compared with the final magnification prescribed. Recent studies have emphasised the importance of acuity reserve in determining the required magnification for optimum reading rate. Two different approache...

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