Results 61 to 70 of about 68,833 (118)

Transarterial packing of an isolated superior sagittal sinus dural arteriovenous fistula using a combined coiling and Onyx casting technique. [PDF]

Radiol Case Rep
Yu J.
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Illuminator for Subtraction Technique

Radiology, 1971
The authors describe a simple, inexpensive illuminator for use with the subtraction technique and in film duplication.
T A, Kendig, A, Hood
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Contact screen image subtraction technique

Applied Optics, 1981
Experimental results have clearly demonstrated that the newly proposed optical contact screen pulse-width modulation image subtraction technique can be used for the evaluation both qualitative and quantitative of the subtle differences between two similar images.
D, Zhao, C K, Chiang, H K, Liu
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Modified Subtraction Technique for Neuroradiology

Radiology, 1973
The authors suggest modifying the standard subtraction technique for use in neuroradiology by using the most informative film in the venous phase as the mask. The anatomical relationships between arteries and veins are shown on one film, while the effect of space-occupying lesions is accentuated using this technique.
I, Lee, T B, Hunter
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Subtraction Radiography: Techniques and Limitations

Radiology, 1977
Subtraction radiography permits the use of 7-10 times less contrast material than is required without subtraction techniques. The first-order, second-order, and composite mask techniques are described and evaluated. While the second-order technique gives more complete cancellation of common structures, the more commonly used first-order technique was ...
M G, Ort, E C, Gregg, B, Kaufman
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Improved Contrast in Subtraction Technique

Radiology, 1970
The authors describe a rapid, reliable method of second-order subtraction in which contrast is improved by the addition of a final exposure on high-contrast photographic film. Such films readily lend themselves to copying for slides and publications, with negligible cost of materials.
J W, Joyce, G V, Dalrymple, F F, Jungkind, P D, Scott, B G, Davasher   +4 more
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Image Subtraction Techniques in Immunoscintigraphy

International Journal of Radiation Applications and Instrumentation. Part B. Nuclear Medicine and Biology, 1986
This paper is devoted to the application of the Image Subtraction Technique to immunoscintigraphy. It is technical, because, although based on simple principles, this method raises problems which are not always satisfactorily solved. It is divided into three parts.
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A simple noise subtraction technique

Review of Scientific Instruments, 2004
Measuring very low level signals at low frequency is a tedious task, because environmental noise increases in this frequency domain and it is very difficult to filter it efficiently. In order to counteract these major problems, we propose a simple and generic noise subtraction technique, which mixes several features of traditional feedback techniques ...
F. Douarche, L. Buisson, S. Ciliberto, A. Petrosyan   +3 more
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