Jill Alison Jones MD, Presenter: Nothing to Disclose

Eva Diehls BA, BS, Abstract Co-Author: Nothing to Disclose

Stanton Jay Rosenthal MD, Abstract Co-Author: Nothing to Disclose

Allison Gilbert, Abstract Co-Author: Nothing to Disclose

Segmental pressure measurement and volume plethysmography have been used for decades as non-invasive screening tools to evaluate suspected peripheral artery disease. When used in combination, these studies can quickly and reliably determine the presence of disease, estimate disease location and grade severity, often at a reduced cost compared to traditional duplex ultrasound. However, technical limitations of the exam can result in both false positive and negative interpretations. Interpreting providers should have a general understanding of the underlying physics and technical parameters involved with segmental pressures and plethysmographic studies in an effort to reduce error and improve diagnostic confidence.

1. Review of fluid mechanics 2. Blood flow characteristics 3. Demonstrate proper technical considerations - Segmental pressure testing - Volume plethysmography testing 4. Review common patterns of disease via pictorial case examples - Normal exam - Peripheral vascular disease - Raynaud’s syndrome - Thoracic outlet syndrome - Disease mimics

http://abstract.rsna.org/uploads/2014/14002633/14002633_bpan.pdf

Jones, J, Diehls, E, Rosenthal, S, Gilbert, A, Under Pressure: The Physics of Segmental Pressures and Volume Plethysmography as Applied to the Peripheral Arterial System.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14002633.html