Results 301 to 310 of about 1,575,773 (328)

Contrast Enhancement in Light Microscopy

Current Protocols in Cytometry, 1997
AbstractThe optical microscope is a fundamental component of an image cytometry system. This unit covers the basic concepts of light microscopy, including Köhler illumination, resolution, contrast, and numerical aperture, and reviews the many types of instruments and techniques for contrast enhancement. Curr. Protoc. Cytom. 63:2.1.1‐2.1.9.
H. Ernst Keller, Simon C. Watkins
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Contrast-Enhanced Ultrasonography of the Pancreas

Pancreatology, 2009
Ultrasound is often the first examination performed in patients with suspicion of pancreatic disease. The introduction of contrast-enhanced ultrasonography (CEUS) has led to great developments in the diagnostic capabilities of ultrasound. Dynamic observation of an enhancement allows a highly sensitive evaluation of any perfusion of the abdominal organs.
FACCIOLI, Niccolò, CRIPPA, Stefano, BASSI, Claudio, D'ONOFRIO, Mirko   +3 more
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Clinical evaluation of contrast-enhanced digital mammography and contrast enhanced tomosynthesis—Comparison to contrast-enhanced breast MRI

European Journal of Radiology, 2015
To compare the diagnostic accuracy of contrast-enhanced digital mammography (CEDM) and contrast-enhanced tomosynthesis (CET) to dynamic contrast enhanced breast MRI (DCE-MRI) using a multireader-multicase study.Institutional review board approval and informed consents were obtained.
Bao-Hui Hung, John M. Lewin, Huay-Ben Pan, Jia-Bin Liao, Tsung-Lung Yang, Jer-Shyung Huang, Chen-Pin Chou, Chia-Ling Chiang   +7 more
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Contrast Enhancement for Hypoechoic Lesions

2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006
We propose a novel method for contrast enhancement in hypoechoic lesions. Our approach is based on the concept of distance on image manifolds to obtain a credibility function which captures the delineation of the lesion; if the lesion is sharply defined, the credibility function will also give a sharp response, whereas it varies smoothly at locations ...
Vincent Laurain, Dieter Hönigmann
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Contrast-enhanced digital mammography

European Journal of Radiology, 2009
CEDM is a recent development of digital mammography using the intra-venous injection of an iodinated contrast agent in conjunction with a mammography examination. Two techniques have been developed to perform CEDM examinations: the temporal subtraction technique with acquisition of high-energy images before and after contrast medium injection and the ...
Jean Rémi Garbay, Corinne Balleyguier, Clarisse Dromain, Ghazal Adler, Suzette Delaloge   +4 more
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Contrast Enhanced US of the Scrotum

2011
High performance contrast specific modes are currently implemented for superficial probes, and an increasing interest is now rising for use of contrast enhanced ultrasound (CEUS) in evaluation of scrotal pathologies. Microbubble contrast agents arehighlysensitiveinassessingpresenceorabsence of vascular flow.
BERTOLOTTO, MICHELE, Valentino M., Sidhu P. S.   +2 more
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Contrast adaptation may enhance contrast discrimination

Spatial Vision, 2002
Whether contrast adaptation may enhance contrast discrimination is a question that has remained largely unresolved because of conflicting empirical evidence. Greenlee and Heitger (1988), for example, reported that contrast discrimination may be enhanced after contrast adaptation, while Maattanen and Koenderink (1991) did not.
Giulia Abbonizio, Keith Langley, Colin W. G. Clifford   +2 more
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Comparison of Contrast-Enhanced Mammography and Contrast-Enhanced Breast MR Imaging

Magnetic Resonance Imaging Clinics of North America, 2018
Contrast-enhanced mammography (CEM) is a contrast-enhanced modality for breast cancer detection that utilizes iodinated contrast and dual-energy imaging performed on a digital mammography unit with only slight modifications. It is approved by the US Food and Drug Administration, commercially available, and in routine clinical use at centers around the ...
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Toboggan contrast enhancement for contrast segmentation

[1990] Proceedings. 10th International Conference on Pattern Recognition, 2002
Toboggan contrast enhancement is a noniterative single-parameter linear execution time method for selectively augmenting the contrast of multispectral images of arbitrary dimensionality. Toboggan enhancement followed by contrast segmentation is compared with adaptive smoothing, all iterative, multiple parameter, parallel approach that achieves similar ...
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Generating and Enhancing Contrast

2019
In this chapter, we will consider further the principles of generating contrast in medical images. Having already explored physical principles that we can use to generate contrast between body tissues in earlier chapters, in this chapter, we will meet ways in which we can enhance the contrast and thus tailor our medical imaging devices to particular ...
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