首页 > 资源导航 > 专利 > 物理 > 核物理;核工程
申请日期
全部
订阅
收起
专利
  • [发明专利]JP19990230995 _ GENERAL ELECTRIC CO 1999年08月18日
    PROBLEM TO BE SOLVED: To provide a filter assembly that includes a plurality of filter elements for regulating intensity of X-ray beam and quality of X-rays in a CT picture producer. SOLUTION: Position of a filter assembly 92 is so determined that the...
  • [发明专利]WO1999US17634 _ IMPLANT SCIENCES CORPORATION 1999年08月03日
    The present invention provides methods and devices which use a palladium source enriched in Pd-102 and depleted in Pd-108 and Pd-110 to coat the body of a medical device. Whereas prior devices, which include palladium throughout the volume of the body...
  • [发明专利]WO1999SE01553 _ ELEKTA AB NILSSON, BOERJE ARNDT, JUERGEN 1999年09月07日
    A method of providing with precision a number of long and narrow through holes (11) in a body (1) made of a high-density material. The body (1) is made in the form of a number of partial bodies (2, 2', 2"), which are arranged close to each other and f...
  • [发明专利]WO1999EP06732 _ EUROTOPE ENTWICKLUNGSGESELLSCHAFT FUER ISOTOPENTECHNOLOGIEN MBH HESS, ANDRE REETZ, TEJA 1999年09月13日
    The invention relates to highly radioactive miniaturized cylindrical radiation sources made of strontium 90/titanate, strontium 90/ zirconate and strontium 90/silicate. Said radiation sources have an activity that is greater than 25 mCi/mm<3>, prefera...
  • [发明专利]WO1999US05166 _ WM. MARSH RICE UNIVERSITY OLDENBURG, STEVEN, J. AVERITT, RICHARD, D. HALAS, NANCY, J. 1999年03月10日
    The present invention is for particulate compositions and methods for producing them that can absorb or scatter electromagnetic radiation. The particles are homogeneous in size and are comprised of a nonconducting inner layer that is surrounded by an ...
  • [发明专利]WO1999US03548 _ RADIANCE MEDICAL SYSTEMS, INC. 1999年02月19日
    This invention is a thin film radiation source (10) which may be used to deliver a radioactive dose to a site in a body lumen. The source (10) comprises a thin flexible substrate (12), and a layer of radioisotope (16) attached thereto. The source (10)...
  • [发明专利]WO1999GB00886 _ ELEKTA AB (PUBL) CONVERY, DAVID, JOHN 1999年03月19日
    An algorithm to generate discrete beam intensity modulation by dynamic multileaf collimation (MLC) is described which incorporates constraints on minimum allowed leaf separations. MLC positioning information is derived simultaneously for all leaf pair...
  • [发明专利]WO1999GB02687 _ NYCOMED AMERSHAM PLC LEWIS, DEWI DOLLIMORE, LUCINDA, A. POWELL, NIGEL, A. MCINTIRE, GREGORY, L. GUSTOW, EVAN SNOW, ROBERT, A. 1999年08月13日
    The invention provides the use of a radiation source which is a low energy X-ray emitter, e.g. with an energy of emission of the principal photon in the range of 20 to 100 keV, preferably 20 to 40 keV and with a half life of 10 to 100 days, preferably...
  • [发明专利]US19990282674 _ ANALOGIC CORPORATION 1999年03月31日
    In an improved computerized tomography scanner, the X-ray source is configured to have a focal spot that is variable in position in a direction parallel to or substantially parallel to the longitudinal or rotation axis of the scanner. Data are sampled...
  • [发明专利]US19990303480 _ STERN HENRY J. 1999年04月30日
    A nuclear decay laser that produces a stream of nuclear decay particles and/or photons of electromagnetic radiation. The stream of nuclear decay particles and/or photons is produced by subjecting radioactive materials to an external magnetic field whi...
回到顶部
选择了条数据