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The classic essential text on anatomy...

Ultrasound

Atherosclerosis Diagnosis

V F Murphy< a> Sunday 20th June 2004

Atherosclerosis is a disease characterised by the build up of scleroid lesions, termed atheroma. These atheroma take the form of porridgelike blockages within the human circulatory system.

These blockages act to distrupt the normal course of circulation, leading to infarction, whereby blood is unable to reach a certain area, or the formation of thrombosis, where the blood effectively clots within arteries or veins. These can lead to heart attacks, or strokes.

Assessment of the Arm Brachial…

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Measurement of Blood Flow

V F Murphy< a> Saturday 24th May 2003

Continuous wave ultrasound Continuous wave ultrasound probe techniques involve an ultrasound signal being transmitted into the skin, and the difference in frequency reflected being measured. Along with the spectral broadening, this provides an indication of blood flow in terms of turbulence and presence. It however is difficult to get a qualitative measure, to discriminate between venous, capillary, or arterial vessels, is sensitive to the angle to flow, and lacks depth resolution. On the posit…