Journal of Japanese Society of Biorheology
Online ISSN : 2186-5663
Print ISSN : 0913-4778
ISSN-L : 0913-4778
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Volume 26, Issue 1
Displaying 1-7 of 7 articles from this issue
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  • Practical Cardiology and Rheology: Fractional Flow Reserve
    Taichi KOMAI
    2012 Volume 26 Issue 1 Pages 2-4
    Published: 2012
    Released on J-STAGE: March 31, 2016
    DOIhttps://doi.org/10.11262/jpnbr.26.1_2
    JOURNAL FREE ACCESS
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    Cardiology is medicine about circulation of blood, non-Newton fluid, in the human body; therefore, it has very close relationship with rheology. However, there seems to be difficulty in applying rheological way of thinking to practical medicine in the field of cardiology. In this article, I’d like to discuss one of the most successful physiological indexes in practical cardiology, Fractional Flow Reserve (FFR). By examining FFR, how rheological way of thinking can be applied into practical cardiology may be searched.
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  • Measurement and analysis of flow and pressure in tubes during single-needle dialysis
    Chihiro FUJIHARA, Takehito OGAWA, Jun-ichi ONO, Seiichi MOCHIZUKI
    2012 Volume 26 Issue 1 Pages 5-7
    Published: 2012
    Released on J-STAGE: March 31, 2016
    DOIhttps://doi.org/10.11262/jpnbr.26.1_5
    JOURNAL FREE ACCESS
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    We have fabricated a model for simultaneous measurement of flow rate and pressure in tubes with synchronous picture acquisition of the roller position of a hemodialysis pump operated in a single-needle (SN) mode. A solution of 40 wt% sucrose was perfused. In an SN mode, three phases (removal: inflow; stop; retransfusion: outflow) were observed. As the rollers stopped at arbitrary positions, flow rate varied accordingly. In addition, a reverse flow was observed due to some lag between pump movement and changes in flow and pressure. By minimizing the time lag and reverse flow, optimized operations may be achieved.
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