Computerized automatic system to obtain inspiration/expiration chest roentgenograms without patient collaboration.
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.
Carreira
J M
JM
Laboratorio de Investigación en Imagen Radiológica, Facultad de Medicina, Santiaga de Compostela University, Spain.
Carrascal
F M
FM
Méndez
A
A
Souto
M
M
Tahoces
P G
PG
Parrado
D
D
García
M
M
Vidal
J J
JJ
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