Notes
Mean blood flow velocity can be calculated in two ways. One is TAV mean, the average of time-averaged velocity, which is used for calculation of blood flow and can be calculated by tracing TAV by automatic tracing function of the device. The other is Vmean, a synonym of time-averaged maximum velocity, which is the time average of maximum velocity calculated by tracing the maximum velocity per second and is used for calculation of pulsatility index (PI).
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This is an updated version of an article originally published in Jpn J Med Ultrasonics 2009;36:501–18.
Terminology and Diagnostic Criteria Committee, Japan Society of Ultrasonics in Medicine
Chairman: Masafumi Kitaoka
Subcommittee for Preparing Guidelines for Ultrasound Diagnosis of Carotid Artery
Chairman: Hiroshi Matsuo
Vice Chairman: Nobuyuki Taniguchi
Members: Toshiya Ozaki, Satoshi Kaneda, Eiichi Ennda, Kazuyuki Nagatsuka, Rekko Harada, Toshiko Hirai, Etsuko Fushimi, Masahiro Yasaka
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Terminology and Diagnostic Criteria Committee, Japan Society of Ultrasonics in Medicine. Standard method for ultrasound evaluation of carotid artery lesions. J Med Ultrasonics 36, 219–226 (2009). https://doi.org/10.1007/s10396-009-0238-y
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DOI: https://doi.org/10.1007/s10396-009-0238-y