Concept

Contrast-enhanced ultrasound

Related publications (97)

Relaxivity of MRI contrast agents

André Merbach, Lothar Helm, Eva Jakab Toth

In the recent years Magnetic Resonance Imaging has evolved into one of the most powerfuldiagnostic techniques in medicine, in part thanks to the application of suitable contrastagents. The design of new, more efficient MRI contrast media requires the compl ...

Springer2002

Trifluoromethyl-substituted pyridines through displacement of iodine by in situ generated (trifluoromethyl)copper

Fabrice Cottet

A literature method reported for the prepn. of trifluoromethyl substituted benzenes from iodobenzene and congeners was successfully extended to the pyridine series. 2-Iodopyridines can be converted into 2-(trifluoromethyl)pyridines almost quant. by displac ...

2002

A New Method of Contrast Normalization for Verification of Extracted Video Text Having Complex Backgrounds

Jean-Marc Odobez, Datong Chen

One of the difficulties of extracting text contained in images or videos comes from the variation of the grayscale values of the text and backgrounds. In this paper we propose a new method to normalize the contrast between text characters and backgrounds s ...

IDIAP2002

Enhanced resonant backscattering of excitons in disordered quantum wells

Vincenzo Savona

A clear signature of enhanced backscattering of excitons is observed in the directional resonant Rayleigh scattering of light from localized two-dimensional excitons in disordered quantum wells. Its spectral dependence and time dynamics are measured and th ...

2002

Contrast mechanisms in high-resolution contact lithography: A comparative study

Olivier Martin

We compare three different approaches to high-resolution contact lithography with special emphasis on contrast mechanisms for subwavelength structures. Masks with protruding metal absorbers, masks with absorbers embedded in the transparent background, and ...

Elsevier2001

Coherence based contrast enhancement in x-ray radiography with a photoelectron microscope

Giorgio Margaritondo

We show that a photoelectron spectromicroscope of the photoelectron emission microscope type can be used as an x-ray imaging detector for radiology. Using high penetration hard-x-ray photons (wavelength < 0.1 nm), samples as thick as a few millimeters can ...

1999

New developments in the field of semiconductors lasers. II

René Salathé

For pt.I see ibid., vol.68, no.40 (1976). The theoretical bandwidth of 1014 hertz for optical laser communications is mentioned and contrasted with the present practical limit of 5 GHz. Glass fire properties are discussed in detail. Laser distance measurem ...

1977

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