Image Optimization  5-33 
  In B or B+Color mode: to enter TVI Mode, parameters of TVI mode will be displayed on the 
touch screen. 
  In Power mode: to enter TEI Mode, parameters of TEI mode will be displayed on the touch 
screen. 
  PW mode: Press user-defined <TDI> key, and then press <PW> or <Update> to enter TVD. 
The parameters of TVD are displayed on the touch screen. 
  M mode: Press user-defined <TDI> key, and then press <M> or <Update> to enter TVM. 
The parameters of TVM are displayed on the touch screen. 
Switching between the TDI modes 
In TDI mode, press <C>, <PD>, <M> or <PW> to switch among the modes. 
Exit TDI 
  Press user-defined <TDI> key to exit from TDI mode and enter general imaging modes. 
  Or, press <B> on the control panel to return to B mode. 
5.10.2  TDI Image Parameters 
In TDI mode scan, the image parameter area in the left corner of the screen will show the real-time 
parameter values as follows: 
  TVI/TEI 
Meaning  Frequency  Gain  Color Wall Filter  Pulse Repetition Frequency PRF 
  TVD 
Items  F  G  WF  PRF  SVD  SV  Angle 
Meaning  Frequency  Gain 
WF (Wall 
Filter) 
Pulse Repetition 
Frequency PRF 
SV 
depth 
SV 
Size 
Angle 
  TVM 
Image parameters combine the parameters of TVI mode and M mode. 
5.10.3  TDI Image Optimization 
In each TDI mode, the parameters that can be adjusted are similar to those in the color flow modes 
(Color, PW, and Power). See the relevant sections for details. The following introduces the specific 
items in TDI mode. 
Flow State 
Description  This function is used for fast image optimization. 
Operations  Adjust using the [Flow State] item on the touch screen. 
5.10.4  TDI Quantitative Analysis   
CAUTION: 
TDI is provided for reference, not for confirming a diagnosis. 
 
NOTE:  To perform the strain and strain curve, the ECG curve is in need in case of the deviation in 
curve. 
TDI quantitative analysis is an option.   
It is about analyzing the data of TVI imaging and measuring the velocity of the myocardium with the 
cardiac cycle.