| 摘要 |
An apparatus for diagnosing a pulmonary ventilation function includes a flow sensor for detecting a breathing cycle of a patient, a gas regulator for supplying a gaseous contrast medium to the patient, and a CT scanner for performing X-ray scanning and photography of a patient's lungs during one breathing cycle, in response to an output signal from the flow sensor and for outputting a plurality of tomographic images including X-ray absorbance components (CT value information components). The tomographic images generated by the CT scanner are stored in an image file memory. The CT value of the tomographic image read out from the image file memory is compared with a threshold value, and a region required for checking the pulmonary ventilation function is extracted as a result of comparison. The extracted region is displayed on a monitor.
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