نتایج جستجو برای: tomography scanners x ray computed

تعداد نتایج: 839821  

Journal: :American Journal of Physiology-Heart and Circulatory Physiology 2001

Journal: :International Journal of Radiology and Imaging Technology 2016

Journal: :Journal of Advanced Concrete Technology 2021

Radiation technology such as X-ray computed tomography (X-ray CT) is a powerful tool for materials research. Such non-destructive imaging allows us to visualize in three dimensions (3D) the internal structure of without damaging specimen. This paper thus presents our studies on application microfocus CT, synchrotron radiation and integrated microtomography diffraction (CT-XRD) method advance ce...

2010
V. E. Asadchikov A. I. Chulichkov A. V. Buzmakov M. V. Chukalina D. P. Nikolaev G. Schaefer

Image reconstruction is an important task in X-ray computed tomography. In this paper we discuss the results of morphological analysis of test objects in high-noise conditions and compare image reconstruction using two widely employed methods in computed tomography, namely Filtered Back Projection and Algebraic Reconstruction Technique. In our test tomography experiments, we used a laboratory X...

Introduction: In dual-energy computed tomography (DECT), the Hounsfield values of a substance measured at two different energies are the basic data for finding the chemical properties of a substance. The trends of Hounsfield unit (HU) alterations following the changes in energy are different between the materials with high and low Zeff. The present study aim...

Journal: :Medicinskaâ vizualizaciâ 2023

Goal : To develop a method for automated assessment of the volumetric bone mineral density (BMD) vertebral bodies using an artificial intelligence (AI) algorithm and phantom modeling method. Materials Methods: Evaluation effectiveness AI designed to assess BMD based on chest CT data. The test data set contains 100 patients aged over 50 y.o.; ratio between subjects with/without compression fract...

Ali Reza Kamali-Asl Farough Mohammad Mamashi Habib Zaidi Hamid Reza Hemmati Hosein Arabi Vahid Lohrabian

Introduction: Mini Computed Tomography (mini-CT) was suggested in biomedical research to investigate tissues and small animals. We present designed and built a mini x-ray computed tomography (mini-CT) for small animals as well as industrial component imaging. Materials and Methods: The system used in this study includes a X-ray tube 20kV to 160kV and a flat pa...

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