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Magnetic resonance method and device for measuring a periodically varying fluid flow in an object


, : Magnetic resonance method and device for measuring a periodically varying fluid flow in an object. Official Gazette of the United States Patent & Trademark Office Patents 1261(3), Aug 20

The invention relates to a method for in vivo measurement of a periodically varying fluid flow in an object by means of magnetic resonance. The method includes a step for applying first and second additional magnetic field gradients in order to shift the phase of a reference magnetization, which phase shift relates to a net flow of the fluid during an interval between the application of the additional magnetic field gradients. According to the invention, near a phase of a period of the periodically varying fluid flow an excitation RF pulse is generated, the first additional gradient is applied and a first additional RF pulse is generated and near a corresponding phase of a second period of the periodically varying fluid flow a second additional RF pulse is generated and the second additional gradient is applied.

US$29.90


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Corbière, V.; Nicolay, H.; Russo, V.; Stroobant, V.; Brichard, V.; Boon, T.; van der Bruggen, P., 2004: Identification of a MAGE-1 peptide recognized by cytolytic T lymphocytes on HLA-B*5701 tumors. "Cancer germline" genes such as those of the MAGE family are expressed in many tumors and in male germline cells but are silent in normal tissues. They encode shared tumor-specific antigens that have been used in therapeutic vaccination...

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Bento, L.S.n Miguel; Sa, S., 1998: Study of high-molecular weight compounds in sugar using gel-permeation chromatography with an evaporative light scattering detector. Raw sugars and other sugar process materials are studied by GPC (Gel Permeation Chromatography) using a Superose 12 column. As eluent was used a solution of 30% acetonitrile with 0.005 M ammonium acetate. As detector was used to spectrophotometric...

Chyczewski, L.; Chyczewska, E.; Sulkowski, S., 1986: Ultrastructural studies of the surface of pulmonary macrophages of guinea pigs exposed to cigarette smoke. Patologia Polska 37(2): 110-120

Szymanski, W., 1975: Aims and directions of economic growth up to 1980. The growth of incomes in Poland is discussed. Real wages increased in the period 1971-1975 by 40% or nearly 8% a year. This growth of incomes is reflected in the demand for food. More investment is required in future in all sectors of the economy.

Muir, A.J.; Trotter, J.F., 2002: A survey of current liver biopsy practice patterns. To survey clinicians regarding current liver biopsy practice patterns. Although the hepatitis C epidemic has increased the proportion of hepatology in general gastroenterology practice, many clinicians express concern regarding the risks of percut...

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Heflich-Piatkowska, H., 1956: Casuistics of Pick's disease. Neurologia, Neurochirurgia i Psychiatria Polska 6(6): 761-770

Pentz, E.I., 1969: Adaptation of the Rimini-Schryver reaction for the measurement of allantoin in urine to the autoanalyzer: allantoin and taurine excretion following neutron irradiation. The automatic method is based on alkaline hydro lysis of allantoin to allantoic acid which is subse quently hydrolysed with acid to urea and glyoxylic acid. The phenylhydrazone of glyoxylic acid is oxidized in strong acid with ferricyanide and abs...