216 Chapter 15
Fig 15-1 depicts a Doppler spectrum with two cycles. A cycle starts at the start
systole (when the heart starts to contract) and ends at the end diastole (when the heart
is resting and filled with blood). The correct placement of vascular calculation
markers is indicated in the figure.
Figure 15-1. Doppler spectrum. Abbreviations explained below.
Frequency or
velocity
The calculations and the way in which they are presented on the screen depend on
whether the Doppler angle is active or not.
WARNING Drawings of Doppler curves, manual and automatic, are meant as tools for
positioning cursors so that measurements based on the curves can be calculated
automatically. The General Pro Package contains no facilities for checking whether the
automatic measurements are reasonable. Curves drawn on very noisy spectra may
lead to misplacement of measurement cursors. Make sure that measurement cursors
are positioned so that the results are reasonable. If they are not, you must adjust the
position of the cursors manually.
SS
Start systole
MD
Minimum diastole
PS
Peak systole
ED
End diastole
ES
End systole
Peak (Max)
Mean
time
Doppler Shift
kHz
Summary of Contents for Pro Focus 2202
Page 1: ...English BB1279 A June 2005 Pro Focus 2202 Extended User Guide ...
Page 14: ...14 ...
Page 15: ...Part 1 Basics ...
Page 16: ......
Page 32: ...32 Chapter 1 ...
Page 48: ...48 Chapter 2 ...
Page 49: ...Part 2 Working with the Image ...
Page 50: ......
Page 98: ...98 Chapter 5 ...
Page 117: ...Part 3 Imaging Modes ...
Page 118: ......
Page 136: ...136 Chapter 8 ...
Page 152: ...152 Chapter 10 ...
Page 164: ...164 Chapter 12 ...
Page 165: ...Part 4 Setting up and Maintaining Your System ...
Page 166: ......
Page 200: ...200 Chapter 13 ...
Page 208: ...208 Chapter 14 ...
Page 209: ...Part 5 Pro Packages ...
Page 210: ......
Page 288: ...288 Chapter 19 ...
Page 313: ...Part 6 Appendixes ...
Page 314: ......
Page 344: ...344 Appendix C ...