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Image restoration in radioisotopic imaging systems
Physics in Medicine & Biology, 1967In radioisotope image visualization, the final image must be interpreted by the human visual system. However, an inherent blurring of the image limits the amount of useful information which can be extracted from it. Attempts have been made to restore the image by compensating for the degradation.
T A, Iinuma, T, Nagai
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Image compression for medical imaging systems
Journal of Medical Systems, 1987The physical size of typical digital images, in terms of the number of bytes of data one image contains, is large; e.g., a 1024 X 1024 image with 8 bits of data per pixel contains a megabyte of data. To transmit many such images over a network, sometimes over low-capacity phone lines to remote sites, or to store large numbers of images over a long ...
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Organic Photoreceptors for Imaging Systems
, 2018Xerographic photoreceptors charge acceptance and dark discharge photoinduced discharge photogeneration theories photogeneration in organic solids charge transport theories charge transport in polymers and related materials experimental techniques ...
Borsenberger
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Organ-Dedicated Molecular Imaging Systems
IEEE Transactions on Radiation and Plasma Medical Sciences, 2018In this review, we will cover both clinical and technical aspects of the advantages and disadvantages of organ specific (dedicated) molecular imaging (MI) systems, namely positron emission tomography (PET) and single photon emission computed tomography ...
Antonio J. González +2 more
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Imaging Nervous System Activity
Current Protocols in Neuroscience, 1997AbstractOptical imaging methods rely upon visualization of three types of signals: (1) intrinsic optical signals, including light scattering and reflectance, birefringence, and spectroscopic changes of intrinsic molecules, such as NADH or oxyhemoglobin; (2) changes in fluorescence or absorbance of voltage‐sensitive membrane dyes; and (3) changes in ...
R D, Fields, M J, O'Donovan
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ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005., 2005
In this paper, we present a novel face image validation system. The purpose of the system is to evaluate quality of face images for identification documents and to detect face images that do not satisfy the image quality requirements. To determine image quality the system first performs face detection in order to find facial features and determine ...
Subašić, Marko +4 more
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In this paper, we present a novel face image validation system. The purpose of the system is to evaluate quality of face images for identification documents and to detect face images that do not satisfy the image quality requirements. To determine image quality the system first performs face detection in order to find facial features and determine ...
Subašić, Marko +4 more
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Latent-imaging photopolymer systems
Applied Optics, 1978A new high-resolution latent-imaging photopolymer system is reported for recording thick refractive-index patterns such as volume phase holograms and grating devices. A photosensitive polymerization initiator is chemisorbed on the surfaces of a porous glass matrix (average pore diameter 4 nm).
E A, Chandross +2 more
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PORTABLE ULTRASOUND IMAGING SYSTEM
The Journal of the Acoustical Society of America, 2009A portable ultrasound imaging system includes a scan head coupled by a cable to a portable battery-powered data processor and display unit. The scan head enclosure houses an array of ultrasonic transducers and the circuitry associated therewith, including pulse synchronizer circuitry used in the transmit mode for transmission of ultrasonic pulses and ...
Alice M. Chiang, Steven R. Broadstone
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Expert Review of Medical Devices, 2007
For approximately 30 years colposcopically directed biopsy of the uterine cervix has been the gold standard for the detection of cervical intraepithelial neoplasia (CIN) and cancer following an abnormal Papanikolaou (Pap) smear. Recent technological advancements utilizing properties of fluorescence, reflectance and spectroscopy intrinsic to in vivo ...
James E, Kendrick +2 more
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For approximately 30 years colposcopically directed biopsy of the uterine cervix has been the gold standard for the detection of cervical intraepithelial neoplasia (CIN) and cancer following an abnormal Papanikolaou (Pap) smear. Recent technological advancements utilizing properties of fluorescence, reflectance and spectroscopy intrinsic to in vivo ...
James E, Kendrick +2 more
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Imaging in electrosensory systems
Interdisciplinary Sciences: Computational Life Sciences, 2010This review addresses the biophysical mechanisms of image formation in electrosensory systems. These electrical images are used for navigation and object detection by many species of fish, some amphibians, and some mammals. In the active electrosensory systems of fish these images are formed by the fish's own electric organ discharge.
Ana Carolina, Pereira +1 more
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