title: Computerized automatic system to obtain inspiration/expiration chest roentgenograms without patient collaboration.
abstract: We have developed a computerized automatic X-ray image acquisition system. It consists of conventional pressure and flow transducers connected to a commercial data acquisition card installed in a PC/AT, the card output being connected through a relay to a conventional X-ray system. Signal processing, that has been applied for automatic detection of inspiration and expiration in respiratory signals, allows the X-ray equipment activation at a given moment of the respiratory cycle. Radiographs are thus obtained either in inspiration or expiration at tidal volume on anaestesized experimental animals. The system has also been tested on non-collaborating patients.
authors.affiliation: Laboratorio de Investigación en Imagen Radiológica, Facultad de Medicina, Santiaga de Compostela University, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Carreira
authors.forename: F M
authors.initials: FM
authors.lastname: Carrascal
authors.forename: A
authors.initials: A
authors.lastname: Méndez
authors.forename: M
authors.initials: M
authors.lastname: Souto
authors.forename: P G
authors.initials: PG
authors.lastname: Tahoces
authors.forename: D
authors.initials: D
authors.lastname: Parrado
authors.forename: M
authors.initials: M
authors.lastname: García
authors.forename: J J
authors.initials: JJ
authors.lastname: Vidal
mesh_terms: D000818:Animals; D005069:Evaluation Studies as Topic; D006801:Humans; D010349:Patient Compliance; D011817:Rabbits; D011856:Radiographic Image Enhancement; D013902:Radiography, Thoracic / Q000379:methods*; D012129:Respiratory Function Tests