Stacey, B.S.F.; Patel, P.
April 2003
Gut;Apr2003 Supplement 1, Vol. 52, pA40
Academic Journal
Introduction: Advances in computer software and acquired image quality have meant that new and more sensitive means of interpreting scintigraphy data are possible. Described here is the creation of a three dimensional construction of the function of the oesophagus throughout its length, with time as the fourth variable. This is not an anatomical model. It provides a visual image indicating the site of hold up or delayed transit over the length of the oesophagus and is quantiFiable—ie the ratio of the diameter of the cylinder in two scans reflects the change in rate of transit. Methods: The distance travelled by the mode of the scintigraphic count on each acquisition frame is measured by density analysis. This is performed using Scion Image—an image density analysis programme from ther NIH. This series is then plotted against time to produce a curve. An equation for the graph can be generated by computer. The differential of this curve gives its gradient and this, superimposed along the length of a cylinder, gives a functional map of the oesophagus. The model shown is a normal subject with physiological holdup at the striated/smooth muscle junction. Summary: This technique can be used to assess dysmotility and stricture and gives quantitative data for follow up scans.


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