Measurement and Calculation
8-19
image (plane R in Fig. 8-4); then acquire the max. transversal plane in the other image
(plane L in Fig. 8-4) , then freeze the image. Press
Meas
key and select
Biplane-vol.
to
enter the measurement screen of biplane volume. A
+
cursor shows up on the screen.
Use the touchpad to place the
+
on the start point of the longitudinal diameter on plane R
and press
Enter
. “
aVolume:0. 00cm³
,
aD0:00 cm
,
aD1:0. 00cm
,
aD2:0. 00cm
“ is
displayed in the result area in four lines. Follow Ellipse-area to obtain the values of D0
and D1, namely the longitudinal diameter and the antero-posterior diameter of the object.
Follow the distance measurement to obtain the value of D2 on plane L, and the volume
value will be calculated and displayed in the result area automatically.
4B mode: the measurement method is basically the same as the measurement method
described in 2B mode.
B mode: In B mode, acquire the max. longitudinal plane (plane R in Fig. 8-4) and the max.
transversal plane (plane L), then freeze the image; Use cineloop to find plane R. Press
Meas
and select
Biplane-vol.
to enter the measurement screen of biplane volume. A
+
cursor shows up on the screen. Use the touchpad to place the
+
to the start point of the
long axis of plane R and press
Enter
. “
aVolume:0. 00cm³
,
aD0:00 cm
,
aD1:0. 00cm
,
aD2:0. 00cm
” is displayed in the result area in four lines. Follow Ellipse-area to obtain the
values of D0 and D1, namely the longitudinal diameter and the antero-posterior diameter
of the object. Press
Esc
to exit the measurement menu and enter single frame cineloop.
Use the touchpad to find the max. transversal plane L, press
Meas
and select
Biplane-vol.
to enter the measurement screen of biplane volume. A
+
will show up on the
center of the image. Press
Enter
key and press the
Value
control key to place the
cursor over the previous measurement result (DO NOT use the touchpad). Press
Enter
twice and then follow the distance measurement to obtain the value of D2. Now the
volume value will be calculated and displayed in the result area.
【
Note
】
:
It is recommended to use
Biplane vol.
in 2B mode instead of B mode, because
a big error may occur when finding planes R and L from cineloop in B mode.
8.3.3.3 Sphere-vol.
Sphere-vol. is used in Obstetrics for measuring ovarian follicle volume in B, 2B, 4B and
B/M mode. Its measuring process is similar to that of Ellipse-area, but the length of long
axis DL and short axis DS must be the same. “
aD: 0.00cm
,
aVolume: 0.00cm
3
“ will be