6-20
Measurement references
Ratio calculations
FL/AC Ratio
Hadlock F.P., R. L. Deter, R. B. Harrist, E. Roecker, and S.K. Park. “A Date Independent Predictor of
Intrauterine Growth Retardation: Femur Length/Abdominal Circumference Ratio,”
American Journal of
Roentgenology
, 141: (November 1983), p.979-984.
FL/BPD Ratio
Hohler, C.W., and T.A. Quetel. “Comparison of Ultrasound Femur Length and Biparietal Diameter in Late
Pregnancy,”
American Journal of Obstetrics and Gynecology
, 141:7 (Dec. 1 1981), p.759-762.
FL/HC Ratio
Hadlock F.P., R. B. Harrist, Y. Shah, and S. K. Park. “The Femur Length/Head Circumference Relation in
Obstetric Sonography.”
Journal of Ultrasound in Medicine
, 3: (October 1984), p.439-442.
HC/AC Ratio
Campbell S., Thoms Alison. “Ultrasound Measurements of the Fetal Head to Abdomen Circumference
Ratio in the Assessment of Growth Retardation,”
British Journal of Obstetrics and Gynaecology
, 84:
(March 1977), p.165-174.
General references
+/x or S/D Ratio
+/x = (Velocity A/Velocity B)
where:
A = velocity
B = velocity cursor x
Acceleration Index (ACC)
Zwiebel, W.J.
Introduction to Vascular Ultrasonography
, 4th ed., W.B. Saunders Company, (2000), p.52.
ACC = abs (delta velocity/delta time)
Elapsed Time (ET)
ET = time between velocity cursors in milliseconds
Hip Angle/d:D Ratio
Graf, R. “Fundamentals of Sonographic Diagnosis of Infant Hip Dysplasia.”
Journal of Pediatric Orthopedics
,
Vol. 4, No. 6: p.735-740, 1984.
Morin, C., Harcke, H., MacEwen, G. “The Infant Hip: Real-Time US Assessment of Acetabular
Development.”
Radiology
177: p.673-677, December 1985.
Содержание SONOSITE X-PORTE
Страница 1: ...USER GUIDE ...
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Страница 76: ...3 40 Setting up the system ...
Страница 128: ...4 52 Imaging ...
Страница 186: ...5 58 Measurements and calculations ...
Страница 210: ...6 24 Measurement references ...
Страница 234: ...8 16 Cleaning and disinfecting ...
Страница 262: ...9 28 Safety ...
Страница 334: ...10 72 Acoustic output ...
Страница 364: ...B 14 Index printing 5 56 zoom 4 23 ...
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