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Transcranial Doppler Software - DWL

Supplier: Compumedics Limited

The modular design of the DWL software facilitates an upgrade at site at any time from program options to modules with a maximum of efficiency.

Price Guide: POA

Features & Benefits:

With the software development in-house we can react quickly on new demands and therefore guarantee you the best support.

The DWL software provides all the advantages of a modern operating system, from network connectivity to data exchange with external equipment.

The clearly structured and intuitive user interface as well as the freely configurable equipment settings, the automatic routine configuration program, auto-label functions and reports provide the optimal conditions for you to work quickly and effectively.

Each DWL system is equipped with an integrated patient database, very easy to work with, offers a large variety of reports to choose from, which can be revised and supplemented with the help of the report generator.

Spectrum and sound data can be exported and used externally at any time.

Emboli differentiation - the new module for QL software

The emboli differentiation software module is unique: It is the only clinically proven TCD software to discriminate between gaseous and solid emboli.
Physics teaches us that with gaseous emboli the amplitude of the reflection depends strongly on the insonating frequency. With solid emboli, the reflection amplitude is almost constant.
The emboli differentiation software takes advantage of this phenomenon and is able to simultaneously process two different insonating frequencies 2 and 2.5 MHz by using special developed and patented 2+2.5 MHz multi-frequency probes.

Utilizing this technique, in combination with the digital Multi-Gating technique and a series of sophisticated algorithms, emboli can thus be detected and classified as either gaseous or solid due to the different reflection at 2 MHz and 2.5 MHz.

The emboli differentiation software uses a unique graphical display to present the acquired date. The graph shows the number of gaseous and solid emboli as well as the number of artefacts, and the intensity ratio of each signal.

The audio and spectral signals are stored continuously. This enables easy re-analysis of the data in offline mode. The intuitive playback panel allows the data to be easily managed.
Successful applicable in the different fields of stroke care, stroke prevention and surgical neuro protection for example:

To correlate stroke and transient ischemic attack risk:

  • By monitoring during cardiac surgery (carotid stenting, coronary artery bypass, carotid endarterectomy, cardio thoracic surgery) on patients with symptomatic carotid arteries stenosis
  • By monitoring during postoperative phases after cardiac surgery.

Additional Programmes:

  • TCD simulator von Hemodynamics AG, Switzerland

The TCD Simulator is a combination of a detailed cerebral hemodynamics model with simulated Doppler, CBF and other hemodynamic monitoring instrumentation.
Thanks to recent development in computers, it is now possible to represent detailed hemodynamic events in real time - this was previously only possible using supercomputers or analogue circuits to solve the differential equations.  
The author of this interactive program is Dr. Rune Aaslid -- who co-introduced TCD in 1982 and has contributed with numerous publications and 2 books on Transcranial Doppler.

The Virtual Reality Model has been integrated with e-book text to give a comprehensive course in Cerebral Hemodynamics and Transcranial Doppler. Even 3-D models of the anatomy of the cerebral arteries are included to illustrate the hands-on ultrasound probe handling.

Cerebrovascular diseases can be realistically explored and studied, presently included are:

  • carotid stenosis /occlusion
  • variations in circle of willis
  • intracranial stenosis
  • cerebral emboli detection
  • cerebral vasospasm
  • arteriovenous malformations
  • head trauma
  • cerebral circulatory arrest
  • diminished vasomotor reactivity
  • reduced / absent cerebral autoregulation