4 November 1981 Temporal Processing Of Digital Radiographs Of The Breathing Lung
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Abstract
In order to study the mechanical properties of breathing, a dynamic series of digital transmission images is acquired using a conventional gamma camera without collimator as a digital detector and a point source of Tc-99m (5 milli Curie, 140 keV y-rays) about 2 m from the crystal plane of the camera. This radiological set up allows the use of the gamma camera at intrinsic resolution and sensitivity. The transmission images reflect the changes in lung expansion and organ movement during respiration. The image series is processed by means of a temporal Fourier transform to represent amplitude and phase of the harmonic changes in transmission at the fundamental breathing frequency. The application of the image processing techniques allows to differentiate different breathing patterns in normal individuals and to differentiate normal from pathological states. The study therefore illustrates that even crude digital transmission signals from the point of view of spatial resolution may yield dynamic information of physiological and clinical interest.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F. Deconinck, A. Bossuyt, W. Vincken, A. Duerinckx, "Temporal Processing Of Digital Radiographs Of The Breathing Lung", Proc. SPIE 0314, Digital Radiography, (4 November 1981); doi: 10.1117/12.933031; https://doi.org/10.1117/12.933031
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