کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10692524 | 1019701 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cerebral blood flow volume measurements with ultrasound: Interobserver reproducibility in preterm and term neonates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
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چکیده انگلیسی
Cerebral blood flow (CBF) volume can be measured quantitatively by colour duplex sonography. To test the reliability of CBF volume measurements in newborns, two “blinded” examiners performed a prospective test-retest study in 32 neonates (postmenstrual age 32 to 42 weeks). Measurements were done in the internal carotid and vertebral arteries. Intravascular flow volumes (FV) were calculated as the product of angle-corrected time-averaged flow velocity and the cross-sectional area of the vessel. The CBF volumes measured by the two examiners were very close (mean ± SD, 62.6 ± 20.6 vs. 62.1 ± 21.2 mL/min, NS; coefficient of variation, 6.3%; intraclass correlation coefficient, 0.98). The 95% limits of agreement, according to Bland and Altman, ranged from â7.3 to +8.4 mL/min. In comparison with other test-retest studies, the reproducibility of quantitative CBF measurements reported here is among the best ever found. We conclude that CBF volume can be measured reliably even in preterm neonates. (E-mail: martin.schoening@med.uni-tuebingen.de)
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 31, Issue 2, February 2005, Pages 191-196
Journal: Ultrasound in Medicine & Biology - Volume 31, Issue 2, February 2005, Pages 191-196
نویسندگان
Stefan Ehehalt, Martin Kehrer, Rangmar Goelz, Christian Poets, Martin Schöning,