FujiFilm SonoSite M-Turbo User Manual page 67

Transducer Exam Types
C11x Abdomen, Vascular
C60x Abdomen
HFL38x Vascular
L25x Vascular
L38x Vascular
L38xi Vascular
P10x Abdomen
P21x Abdomen
SLAx Vascular
The following table shows the measurements
required to complete the volume flow
calculation. For definitions of acronyms, see
"Glossary" on page 189.
Volume Flow Calculations
Menu Measurement
Heading (Imaging Mode)
Vol Flow D (2D)*
TAM or TAP
(Doppler)
* Required if measuring the diameter instead of using the gate
size
Both a 2D and a Doppler measurement are
required for the volume flow calculation. For the
2D measurement, you can do either of the
following:
• Measure the diameter of the vessel. This
approach is more precise. The measurement
overrides the gate size.
• Use the gate size. If you do not measure the
diameter of the vessel, the system
The Doppler sample volume should completely
insonate the vessel. You can measure either the
time average mean or time average peak. To
specify the live trace setting, see "Presets setup"
on page 22.
Consider the following factors when performing
volume flow measurements:
• Users should follow current medical practice
• The accuracy of the volume flow calculation
• The factors identified in the literature that
Calculation
Result
VF (Volume
Flow ml/min)
The considerations and degree of accuracy for
volume flow measurements and calculations are
discussed in the following references:
automatically uses the gate size and "(gate)"
appears in the calculation results.
for volume flow calculation applications.
largely depends on the user.
affect the accuracy are as follows:
• Using the diameter method for 2D area
• Difficulty ensuring uniform insonation of
the vessel.
The system is limited to the following
sample volume sizes:
• C11x transducer: 1, 2, 3 Gate Size (mm)
• C60x and P10x transducers: 2, 3, 5, 7,
10, 12 Gate Size (mm)
• HFL38x, L25x, and SLAx transducers:
1, 3, 5, 6, 7, 8, 10, 12 Gate Size (mm)
• L38x transducer: 1, 3, 5, 7, 10, 12 Gate
Size (mm)
• P21x transducer: 2, 3, 5, 7, 11.5, 14 Gate
Size (mm)
• Precision in placing the caliper
• Accuracy in angle correction
Allan, Paul L. et al. Clinical Doppler Ultrasound,
4th Ed., Harcourt Publishers Limited, (2000)
36‐38.
Chapter 4: Measurements and Calculations 55