ECG & Pulse Doppler Systems For Cardiovascular Research on Mice
Electronics Contract R&D For Medical, Scientific, & Industrial Instrumentation

 
 
     
   
   
   
   
   
   
   
   
   
                     
       

DOPPLER SIGNAL PROCESSING
WORKSTATION (DSPW)

 
                     
   

The Indus Instruments Doppler Signal Processing Workstation (DSPW) is a real-time spectrum analyzer plus a data analysis and report generation tool, designed specifically for researchers interested in measuring cardiovascular function in mice and other small animals such as rats, hamsters, and rabbits.

DSPW can accept signals from any analog ultrasonic Doppler system capable of generating in-phase and quadrature demodulated audio signals. Shown above is a completely configured unit. The high sampling rates (up to 125 KHz) and good temporal resolution (up to 0.1 msec) of the DSPW are especially suitable for working with high heart rates, fast blood velocities and accelerations present in mice.
View some sample doppler spectograms from mice.

DSPW processes the Doppler signals using a Fast Fourier Transform algorithm and displays a real-time grayscale spectrogram. The signals can be recorded to disk and later analyzed for report generation purposes.

Extensive software support allows rapid data analysis and report generation resulting in increased productivity. Some of the parameters the DSPW has available for measurement are listed below.

 
 
Some of the Parameters the DSPW can measure:
Sample Murine Spectrograms:
 
General Parameters
           • Heart Rate
           • Pulse Wave Velocity

Systolic Indices
           • Peak/Mean Aortic
             Velocity
           • Aortic Acceleration
           • Rise Time
           • Ejection Time
           • Stroke Distance

Systolic-Diastolic Relationships
           • Isovolumic relaxation time
           • Isovolumic contraction time
 
Diastolic Indices
           • Peak Early (E) Velocity
           • Peak Atrial (A) Velocity
           • Durations of E and A
           • E/A Ratio
Peripheral Flow Velocity Indicies
           • Peak/Minimum/Mean Velocity
           • Pulsatility & Resistivity Index
           
 

  See the spectograms that the DSPW can
  create in your lab!