Complications following an amputation.

In 2005 there were an estimated 1.6 million individuals in the United States living with limb loss. This number has been projected to more than double by 2050 to 3.

Postprocessing techniques for time-resolved contrast-enhanced MR angiography.

The purpose of this study was to improve dynamic two-dimensional projection magnetic resonance digital subtraction angiography by using remasking and filtering postprocessing techniques. Four methods were evaluated in 50 patients: default mask subtraction, remasked subtraction, filtering based on the SD, and linear filtering. The results demonstrated that postprocessing techniques such as linear filtering can reduce background motion artifacts and improve arterial contrast-to-noise ratio.