نتایج جستجو برای: Spatial Filter

تعداد نتایج: 477623  

Journal: :iranian journal of medical physics 0
a. boroomand m.sc. in biomedical engineering, tehran university of medical sciences, tehran, iran a. ahmadian associate professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran research center for science & technology in medicine, imam khomeini hospital, tehran, iran m.a. oghabian associate professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran

introduction: the accuracy of analyzing functional mri (fmri) data is usually decreases in the presence of noise and artifact sources. a common solution in for analyzing fmri data having high noise is to use suitable preprocessing methods with the aim of data denoising. some effects of preprocessing methods on the parametric methods such as general linear model (glm) have previously been evalua...

Journal: :Information and Control 1969

Journal: :iranian journal of nuclear medicine 2003
ahmad bitarafan rajabi hossein rajabi nahid yaghoobi fereidoon rastgoo seyed hassan firoozabadi

myocardial perfusion spect imaging with tc99m-sestamibi is the most accurate non-invasive means of detecting coronary artery disease and assessing the severity of perfusion abnormalities in the patients with coronary stenosis. though simple and straight forward the results produced by the technique is very much affected by the details being used. one of the main problems with the test, which ha...

1997
J. E. Murray D. Milam C. D. Boley K. G. Estabrook F. Bonneau

Beamlet measurements show that cone pinholes outperform other types tested with regard to both closure and back reflections. A *I50 prad stainless steel cone remained open for a 15.5 kJ, 10: 1 contrast shaped pulse with Ifi7.5 mad of SSD divergence, which more than meets the requirements for a NIF ignition pulse. Measurements also showed the maximum tolerable pressures in the NIF spatial filter...

1999
Torsten Möller Raghu Machiraju Yair Kurzion Klaus Mueller Roni Yagel

In this paper, we present both a methodology and a rationale for designing filters based on spatial smoothness and accuracy criteria. Frequency based methods have been used to design function and derivative reconstruction filters especially in image and signal processing. Desired filter characteristics are specified in terms of spectral properties. However, for visualization and image synthesis...

Ahmad Bitarafan Rajabi Fereidoon Rastgoo Hossein Rajabi, Nahid Yaghoobi Seyed Hassan Firoozabadi

Myocardial perfusion SPECT imaging with Tc99m-sestamibi is the most accurate non-invasive means of detecting coronary artery disease and assessing the severity of perfusion abnormalities in the patients with coronary stenosis. Though simple and straight forward the results produced by the technique is very much affected by the details being used. One of the main problems with the test, wh...

Journal: :Journal of the Optical Society of America B 1990

Journal: :JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry 1990

Journal: :EURASIP Journal on Advances in Signal Processing 2014

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