[Radiologist-pattern interaction in the processing of fluoroscopic images]

The great complexity of interactions among radiologist, patient and radiological apparatus, when performing radiological tests, is perhaps the main cause of difficulties in the development of automatic systems, both for classification and quantification of radiological images, and for documentation and retrieval of radiological images. The result of such interactions is not a "plate", but a diagnosis, very often the "plate" does not even coincide with the radiological investigation, if this term implies a linkage with the perceptual mechanisms of the radiologist. In other words, the "plate" provides the radiologist with the elements to achieve an interpretation of the image, which will then lead to the diagnosis. In view of a foreseeable spreading of economical medical informatics methodologies, an aim of the present work is stressing the importance of the interactions between medical operators and information processing systems, to select relevant parameters for diagnosis. Sequences of images (originally taken by a movie camera) are presented, which relate to the motor activity of digestive apparatus segments. Processing stresses some of their morpho-dynamic features.