FujiFilm SONOSITE X-PORTE, User Manual

Page: 141 / 366

Measurements and calculations 5-13
Consider the following factors when performing volume flow measurements:

You should follow current medical practice for volume flow calculation applications.

The accuracy of the volume flow calculation largely depends on the user's measurement technique.

The factors identified in the literature that affect the accuracy are as follows:

Using the diameter method for 2D area

Precision in placing the caliper

Difficulty ensuring uniform insonation of the vessel
For more information about the considerations and degree of accuracy for volume flow measurements and
calculations, see the following reference:

Allan, Paul L. et al. Clinical Doppler Ultrasound
,
4th Ed., Harcourt Publishers Limited, (2000) p.36-38.
Exam-based calculations
Abdominal calculations
To calculate volume flow
1 On a frozen 2D or Doppler trace, tap Calcs
If this control is hidden, tapping More Controls displays it.
WARNINGS

To avoid incorrect calculations, verify that the patient information, date, and
time settings are accurate.

To avoid misdiagnosis or harming the patient outcome, start a new patient form
before starting a new patient exam and performing calculations. Starting a new
patient form clears the previous patient’s data. The previous patient’s data will
be combined with the current patient if the form is not first cleared. See
“Entering patient information” on page 4-31.
Table 5-2: Abdominal calculations
Calculation list
Measurement name (imaging
mode)
Calculation result
Volume Flow* Diam (2D), TAM, TAP, or TAV
(Doppler) Vol Flow (Volume Flow ml/min)
*See “Considerations” on page on page 5-12 for factors to consider when performing a volume flow calculation.