A6T/A6/A5 Portable Ultrasonic Diagnostic System
4701-0040-01A
3-86
3.6.3.5 LV function measurement (LV)
For the measurement and calculation items of LV function, see
“3.6.2.4.1LV function”.
For M mode, there are three methods to evaluate LV function: CUBE,
TEICHHOLZ, and GIBSON.
3.6.2.5.1 TEICHHOLZ
Function: To calculate LV volume by calculating the cube of a given
region.
Measurement items: LVIDd, LVIDs;
Calculation items: EDV, ESV, SV, CO, EF, SI, CI, MVCF, FS
Use the formula:
EDV =
LVIDd
LVId
+
×
4.2
7
3
ESV =
LVIDs
LVIs
+
×
4.2
7
3
Measurement method:
1. In M or B/M mode frozen state, press the【Calc】key to pop up the
Meas & Calc menu in M mode, move the trackball, use the cursor to
select “LV function”, press the 【SET】key to go to the subdirectory,
move the trackball, use the cursor to select “TEICHHOLZ”, press the
【SET】key to confirm going to TEICHHOLZ measurement mode.
2. Measure LVIDd, see “3.6.3.1 Distance Measurement” for the specific
measurement.
3. Measure LVIDs, see “3.6.3.1Distance Measurement” for the specific
measurement.
4. The measurement and calculation result is displayed in the result
window.
5. Repeat steps 1 to 4 to perform the next measurement.
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