Zobrazeno 1 - 10
of 189
pro vyhledávání: '"S.K. Hilal"'
Publikováno v:
1990 IEEE Nuclear Science Symposium Conference Record.
Publikováno v:
Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference.
A novel analytical three-dimensional cone beam reconstruction algorithm is presented for truncated spherical detection geometry. The algorithm is generalized for other geometries, such as a truncated cylinder. This approach involves weighted backproj
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 221:627-632
An exemplary circuitry designed for the multi-layer ring (as well as sphere) PET system of 16 rings with each ring consisting of 384 detectors is analyzed and its expected performance is studied. Priority encoders and multiplexing techniques are used
Publikováno v:
IEEE Transactions on Nuclear Science. 30:1892-1898
Experimental verification of the new dichotomic sampling scheme was attempted and applied to a circular ring PET system to improve the sampling thereby the overall system resolution and its performances. In the experiment, two different types of aper
Publikováno v:
IEEE Transactions on Nuclear Science. 36:1043-1046
A detector shape optimization study was carried out for the high-resolution 4*4 array BGO-PMT (bismuth-germanate-photomultiplier-tube) coupling scheme to be used in the spherical positron emission tomograph. To improve the light collection efficiency
Publikováno v:
IEEE Transactions on Nuclear Science. 29:493-499
Direct Fourier transform NMR tomographic method originally proposed by Kumar-Welti-Ernst(KWE) has been modified by double spin echo technique to improve the image quality. This new Modified-KWE(MKWE) method provides two quadrant data set in 2-D Fouri
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 225:422-438
A spherical positron emission tomograph (S-PET) is proposed and its performance analyzed. Computer modelling and simulation studies indicate that a high resolution and high sensitivity positron emission tomograph having a spatial resolution of 2–3
Publikováno v:
Magnetic Resonance Imaging. 4:343-350
Simultaneous imaging of proton and sodium is achieved using a new two coil system and a time-multiplexing technique with a 1.5 T NMR imaging system. Distinctly different NMR parameters of protons and sodium, such as resonant frequencies and T1 relaxa
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Akademický článek
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