نتایج جستجو برای: radiographic image retrieval

تعداد نتایج: 472828  

2005
B. B. Dhal A. G. Peele P. J. McMahon F. De Carlo K. A. Nugent

The rapid development of electronic data processing and phase retrieval technique for image reconstruction leads to new opportunities in X-ray phase tomography. A range of radiographic and tomographic demonstrations have now been made, typically utilizing the coherent flux from an insertion device at a synchrotron or a micro-focus laboratory source. In this paper we demonstrate that useful resu...

فلاح محمدی , غلامرضا, یوسفی, سهراب,

Abstract Background and purpose: The Commission of European Communities (CEC) has developed a guideline in which many common radiographic techniques are determined. Following these guidelines will reduce patient dose and good quality image is obtained. Noncompliance of radiographic centers with standard guidelines not only leads to reduction in radiographic image quality but also wastes reso...

2006
Mingquan Wang Yinong Liu Li Zhang

Real-time digital radiography is an important developmental tendency for radiographic inspection and diagnosis technique, and enhancement of image is the key to improve resolution and sensitivity of radiographic inspection. In this paper, the algorithm and character of Rank-Order filter is discussed with great emphasis. Rank-Order filter is one of nonlinear filter, All the methods are used to p...

Journal: :Optics express 2015
Masih Nilchian Zhentian Wang Thomas Thuering Michael Unser Marco Stampanoni

Differential phase contrast imaging using grating interferometer is a promising alternative to conventional X-ray radiographic methods. It provides the absorption, differential phase and scattering information of the underlying sample simultaneously. Phase retrieval from the differential phase signal is an essential problem for quantitative analysis in medical imaging. In this paper, we formali...

Journal: :annals of military and health science research 0
مجتبی نواب پور mojtaba navvabpour department of radiation technology, faculty of paramedical sciences, shahid beheshti university of medical sciences, ژیلا جمشیدی نیا zhila jamshidinia department of biology, science and research branch, islamic azad university, tehran, iran. محسن بخشنده mohsen bakhshandeh department of radiation technology, faculty of paramedical sciences, shahid beheshti university of medical sciences, darband ave., qods sq., tehran, iran.

purpose: to recognize affective factors in delivering x-ray contrast agents (which have high atomic number) via gallium carrier to liver or lymphatic neoplasm cells.   materials and methods: since uptake of gallium by liver has been reported in numerous researches, it was bonded with a contrast media (metrizoate). x-ray imaging was done to determine geometric features of liver.   results: radio...

Mohsen Bakhshandeh, Mojtaba Navvabpour, Zhila Jamshidinia,

  Purpose: To recognize affective factors in delivering X-ray contrast agents (which have high atomic number) via gallium carrier to liver or lymphatic neoplasm cells.   Materials and Methods: Since uptake of gallium by liver has been reported in numerous researches, it was bonded with a contrast media (metrizoate). X-ray imaging was done to determine geometric features of liver.   Results: Rad...

In content based image retrieval systems, the suitable visual features are extracted from images and stored in the feature database Then the feature database are searched to find the most similar images to the query image. In this paper, three types of visual features by 270 components were used for image indexing. Here, we use a weighted distance for similarity measurement between two images....

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