Moor Instruments moorLDI2-VR - 1 Safety; Introduction and Intended Use; Laser Safety

MOOR INSTRUMENTS moorLDI2 RESEARCH USER MANUAL
1
1. SAFETY
1.1 INTRODUCTION AND INTENDED USE
The ‘Moor Instruments moorLDI2 User Manual’ reference for the following imager types:
moorLDI2-VR Visible red laser Class 3R
moorLDI2-IR Near infra-red laser Class 3R
moorLDI2-HR High Resolution version of moorLDI2-VR Class 3R
moorLDI2-HIR High Resolution version of moorLDI2-IR Class 3R
(NB: Separate User Manuals are available for the dual wavelength types moorLDI2-2λ and
moorLDI2-HR2λ)
The moorLDI2 laser Doppler imager scans a low power laser beam in a raster pattern over skin or
other exposed tissue surface. The beam is either a single visible beam, or a near infra-red beam in
combination with a visible red aiming beam.
Moving blood in the microvasculature causes a Doppler frequency broadening of the scattered laser
light. Some of this scattered light is photodetected in the imager, and then electronically and digitally
processed to build up a colour coded image display of blood flow. The measurement is non-contact
and can quantify differences in flow within a single image and/or image repetitively to assess
evolving flow patterns over time. Up to 256 x 256 individual blood flow measurements are made for
each image recorded. For the VR and IR versions of the imager the measurement resolution is
0.2mm to 2mm, with scanning distances between the instrument aperture and the tissue surface of
20cm to 100cm. For the high resolution imagers HR and HIR versions of the imager which employ a
focussed beam, the maximum resolution is 0.1mm at a measurement distance of 25cm.
The moorLDI2 laser Doppler imagers are intended for measurement of blood flow in the
microcirculation e.g. blood flow in the small blood vessels of the skin. It is suitable for a wide range
of clinical research applications including plastic surgery, diabetes, dermatology, vascular surgery,
wound healing, neurology, physiology, neurosurgery and rheumatology.
1.2 LASER SAFETY
This section can only act as a guide to the user, for full details of mandatory and recommended safety
precautions consult IEC 60825-1:2007 Safety of Laser Products.
This instrument must be installed and operated according to CAN/CSA-Z386-01: Laser Safety
in Health Care Facilities.
CAUTION - Use of controls or adjustments or performance of procedures other than those
specified herein may result in hazardous radiation exposure.
All versions of the moorLDI2 imager are classified as Type 3R.
The instruments are classified as per IEC 60825-1:2007 and as per US 21 CFD 104.10 and 1040.11
except for deviations pursuant to Laser Notice No. 50 dated June 24, 2007.