High Resistance Doppler Spectral Waveforms Recorded Throughout the Renal Medulla

question 1

Multiple Choice

High resistance Doppler spectral waveforms recorded throughout the renal medulla and cortex suggest

• A) proximal renal artery stenosis.
• B) flow-limiting disease in the distal renal artery.
• C) intrinsic medical renal disease.
• D) the presence of accessory renal arteries.

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Definitions:

Shear

The type of differential stress that occurs when stresses on the edge of a mass are applied in opposite directions.

Tension

The type of differential stress where stress is directed outward, pulling the material.

Crustal Levels

The various layers or strata within the Earth's crust, differing in composition, density, and formation history.

Ductile Behavior

Ductile behavior describes the ability of a material to deform under stress without breaking, often associated with rocks and metals that can bend or stretch under geological forces.