Raynaud’s Testing

RAYNAUD’S TESTING

An ultrasound technique, photoplethysmography, is used to diagnose Raynaud’s disease.  It can assess the blood flow to the fingers and toes exposed to cold temperatures.

There is no preparation required for this exam.  During the exam, you will be asked to immerse your hands or your feet into cold water in order to assess the circulation when exposed to cold temperatures.  Your fingers or toes will be examined with an ultrasound probe or PPG (photoplethysmography) sensor which documents the circulation of the arteries.

The acquired images (sonograms) are interpreted by a registered diagnostic medical sonographer then sent to a board-certified radiologist for creation of a diagnostic ultrasound report detailing your results and diagnosis.