نتایج جستجو برای: ultrasonic pulse velocity

تعداد نتایج: 249656  

Journal: :IEEJ Transactions on Electronics, Information and Systems 1995

Journal: :British heart journal 1974
Y Nimura H Matsuo T Hayashi A Kitabatake S Mochizuki

Flow velocity spectra of main arteries in 24 healthy adult subjects and 21 healthy aged subjects were transcutaneously studied using the directional ultrasonic Doppler technique. I) The instantaneous flow velocity spectrum is continuous throughout a pulse cycle, and intensified near the instantaneous maximum velocity, especially in the earlypart ofa pulse cycle. 2) No reverse flow phase is obse...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 1991

Journal: :iranian journal of radiation research 0
mokhtari-dizadji department of medical physics, tarbiat modarres university, tehran, iran m. vahed m. gity

background: ultrasound propagation velocity was measured experimentally in normal, fibroadenoma and ductal carcinoma breast tissues, in order to distinguish normal breast tissue from tumors. materials and methods: in quantitative measurements of ultrasound velocity, 403 breast tissue images were selected, comprising 130 normal breast tissue, 130 fibroadenoma, and 143 ductal carcinoma tumors. th...

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