Results 141 to 150 of about 11,253,180 (206)
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Catheterization and Cardiovascular Interventions, 1999
The X-ray image intensifier converts an X-ray image into a bright visible light image. This enables image recording as well as viewing without dark adaptation. This tutorial describes the construction and function of the image intensifier tube and its associated optics.
S Balter
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The X-ray image intensifier converts an X-ray image into a bright visible light image. This enables image recording as well as viewing without dark adaptation. This tutorial describes the construction and function of the image intensifier tube and its associated optics.
S Balter
exaly +3 more sources
Multifunction image intensifier for image processing
Applied Optics, 1980A specially designed image intensifier tube for optical image processing has been developed. This tube can achieve the many types of processing important for pattern recognition such as deflection, zooming, gating, rotation, intensification, and logic operation in a single device. Experimental demonstrations are presented.
A, Seko, T, Niikura, H, Kobayashi
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Hysterosalpingography with image-intensified fluoroscopy
American Journal of Obstetrics and Gynecology, 1969Abstract Image-intensified fluoroscopy provides an excellent method for hysterosalpingography that is rapid, convenient, flexible, and accurate. Many of the technical errors of other methods of hysterosalpingography can be eliminated. Although visualization of the uterine and tubal lumina is continuous and detailed, with judicious use there need be ...
L A, Aaro, J R, Stewart
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The Conversion Factor for Image Intensifiers
Radiology, 1964Early roentgen electron optical image intensifiers were said to produce an increase in brightness of 500 to 1,000 times when compared with a standard fluoroscopic screen. The light levels were, therefore, of the order of 0.003 cd∕m2 to 3 cd∕m2. Different manufacturers now claim between 1,000 and 6,000 times intensification, but they give very vague ...
T, HOLM, R D, MOSELEY
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The image intensifier as an operating table
The Journal of Hand Surgery, 1987appropriate structures tagged (Fig . I) . Postoperatively, it was necessary to reexplore the stump of the right arm for bleeding , and an exten sive secondary debridement was necessary. After this the patient did well. Physical therapy of the digit s and wrist of the attached extremity was done for 2 weeks , and distal edema was well controlled .
D P, Hanel, D B, Robson
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Image quality of an image-intensifier fluorographic system
Physics in Medicine and Biology, 1984For an image-intensifier fluorographic system, all essential image-quality parameters (such as MTF, noise Wiener spectrum, sensitivity, and characteristic curve) were determined. The results are in good agreement with theoretical considerations and allow a specification of the influence of the system's components on image quality. Film noise especially,
M, Wolf, W, Steinbach, W, Angerstein
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Image intensifier distortion correction
Medical Physics, 1987A method is described for determining and correcting the spatial distortion affecting images acquired with image‐intensified video systems. The distortion is separated into two physically distinct components, a predominant one originating from the projection of the x‐ray image onto the curved input phosphor, and a smaller component corresponding to the
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