. A practical treatise on medical diagnosis for students and physicians . Q *•§ §s BONTGEN RAY EXAMINATION OF LUNGS AND PLEURA. 547 causes of asthma, a spasmodic action of the diaphragm. In makingfluoroscopic examinations it is quite easy to trace the outlines of thesemovements either upon thin paper or upon the chest-wall itself, and thencomparison afterward becomes Heart. The heart has been given its share of study under the a-ray,and most extraordinary claims have been made for this method of exam-ination. But, in point of fact, very little is to be said of its value froma practical
. A practical treatise on medical diagnosis for students and physicians . Q *•§ §s BONTGEN RAY EXAMINATION OF LUNGS AND PLEURA. 547 causes of asthma, a spasmodic action of the diaphragm. In makingfluoroscopic examinations it is quite easy to trace the outlines of thesemovements either upon thin paper or upon the chest-wall itself, and thencomparison afterward becomes Heart. The heart has been given its share of study under the a-ray,and most extraordinary claims have been made for this method of exam-ination. But, in point of fact, very little is to be said of its value froma practical point of view beyond the observation of the size, position, anddegree of expansion. Some observers have claimed that the deep andsuperficial areas of dulness can be mapped out, but the technic is a littletoo complicated and requires too much experience for the average are numerous results still to be obtained, however, and the realm ispractically limitless at present. Among the results of examination so farrecorded have been : a difference between st
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