Mindray DC-80A, Operator'S Manual

Page: 84 / 391

5-4 Image Optimization
5.2.1 Basic Procedures for B Mode Imaging
1. Enter the patient information. Select an appropriate probe and exam mode.
2. Press <B> on the control panel to enter B mode.
3. Adjust the parameters to optimize the image.
4. Perform other operations (e.g., measurement and calculation) if necessary.

Press <B> on the control panel to return to B mode at any time.
5.2.2 B Mode Parameters
In B mode scanning, the image parameter area in the top-right corner of the screen displays the real-
time parameter values as follows:
Parameter F D G FR DR iClear iBeam iTouch Zoom
Echo
Boost
Meaning Frequency Depth Gain
Frame
Rate
Dynamic
Range
Display when the function is turned on.
5.2.3 B Mode Image Optimization
Image Quality
Description To switch between the fundamental frequency and harmonic frequency, and select the
corresponding frequency type. The real-time frequency value is displayed in the image
parameter area in the top-right corner of the screen, and if harmonic frequency is used
“F H” is displayed as the harmonic frequency value.
Rotate the knob under [Img Qual.] on the touch screen to select the different
fundamental/harmonic frequency values.
Press the knob to switch between fundamental frequency and harmonic frequency.
The adjusting range of the fundamental frequency values can be divided into 4 levels:
penetration preferred (HPen), general mode (HGen), resolution preferred (HRes), and
the mode between penetration preferred and general mode (HPen-Gen).
The adjusting range of harmonic frequency values can be divided into 3 levels:
penetration preferred (Pen), general mode (Gen), and resolution preferred (Res).
Impacts The system provides an imaging mode using harmonics of echoes to optimize the
image. Harmonic imaging enhances near-field resolution and reduces low-frequency
and large amplitude noise, so as to improve small parts imaging.
Select the frequency according to the detection depth and current tissue features.
Gain
Description To adjust the gain of the whole receiving information in B mode. The real-time gain
value is displayed in the image parameter area in the top-right corner of the screen.
Operations Rotate the <B> knob clockwise to increase the gain, and counter-clockwise to
decrease it.
The adjusting range is 0-100 in increments of 1.
Effects
Increasing the gain will brighten the image and you will see more received signals.
However, noise may also be increased.