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A study of motion in gastrointestinal x‐ray fluoroscopy
Author(s) -
Nguyen T. C.,
Rowlands J. A.
Publication year - 1989
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596359
Subject(s) - fluoroscopy , motion (physics) , gastrointestinal tract , physics , medicine , optics , nuclear medicine , radiology , computer vision , computer science
Studying motion in the gastrointestinal (G.I.) tract is the first step towards our goal of designing a digital algorithm for real‐time noise and motion blurring reduction by temporal and spatial averaging in x‐ray fluoroscopy. The present work concerns the types of motion relevant to G.I. fluoroscopy (e.g., motion of the walls of the oesophagus, the stomach, the small intestine, and the colon), and measurement of the range of velocities in different parts of the G.I. tract from tape recorded fluoroscopic sequences. The relationship between image contrast and velocity, the effects of motion on system response, and in particular the influence of these parameters on the evaluation of velocities will also be discussed.