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Research  Amplifiers  Laser Doppler Flow  


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Laser Doppler Flow Amplifier

The LDF100C is a laser Doppler tissue perfusion monitor for measuring micro-vascular blood flow in tissue. The LDF100C amplifier delivers a low power beam of laser light down an optical fiber to the tissue being studied; typically, the volume of tissue sampled by the light is in the order of 1mm3. The LDF100C amplifier analyzes the Doppler shift created by moving red blood cells and outputs a channel indicating blood flow expressed in Blood Perfusion Units (BPU). On a second channel the LDF100C simultaneously outputs the tissue remittance (Backscatter) from 0 to 100%. Up to four LDF100C amplifiers can be used with a single MP System. See the extensive range of TSD140 series laser Doppler flow probes in the transducer section.

If probes are shipped with the LDF100C, they are factory-calibrated to the module (except Disposable probes). Otherwise, probes are shipped uncalibrated. The LDF100C requires an appropriate Blood Perfusion Unit standard (LDFCAL) when (re)calibrating new or existing probes.

IMPORTANT- The LDFCAL solution has a 3-month lifetime (from creation, not from first use), so it's best to order it only when required.

The LDFCAL has a limited shelf life and should be purchased close to planned usage.

 Cardiovascular Hemodynamics
     Hardware for human and animals. Measure continuous BP, ECG, stroke volume, cardiac output, PPG, etc. For animal and tissue look at acute and chronic dose-response.
 Laser Doppler Flow
     Record microvascular circulation invasively or noninvasively with LDF100C. Look at the effects of drugs, exercise, inadequate blood supply, and tissue ischemia.
 Magnetic Resonance Imaging with BIOPAC Equipment
     Electrodes, electrode leads, transducers, and stimulus options for safe data acquisition in the MRI. Record biopotentials, temperature, respiration, EDA, dynamometry, blood pressure, etc.

Knowledge Base Topics
Search the Knowledge Base or Ask a Question if your issue isn't listed here.
 Amplifier conversion - 2 mm to touchproof
 Amplifier filter settings
 Amplifier Module Filter Response Times
 Galvanic Isolation Guidelines for the MP150 System
 Glossary of Specification Terminology
 Grounding guidelines
 High pass filters
 LDF probe temperature range
 Low pass filters
 Notch filter
 Optimal ground placement
 Railing signal (flatline)
 Sample rates for different signals
 Signal drifts to zero
 Tutorial on Electrostatic Discharge
 Using BIOPAC research amplifiers with the BSL System

MP Systems Hardware Guide
AcqKnowledge 4 Software Guide
MP Research System User List
Application Note: LDF100A Laser Doppler Flow Module
Laser Doppler Flow System Overview
Product Citations: review publications summary or conduct a search
MP Research Catalog
BioNomadix Wireless Physiology Catalog
New Products Catalog
MRI Catalog
VR and Stimulus Presentation Catalog
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