Roentgen Studies of the Lungs and Heart: A Series of Lectures Delivered at the Center for Continuation Study, University of Minnesota

As the editor states in his introduction, "such a series of original papers does not exhibit a systematic or well rounded presentation of the roentgen diagnosis of diseases of the thorax, nor is any such presentation intended. Rather this is a series of loosely connected studies united chiefly by the manner in which the author interprets his findings in the light of the physiology and pathology of the respiratory and circulatory systems."

The author discusses in detail the various technics which he employs. Emphasis is placed on fluoroscopy, for study of the respiratory movements, observation of the effect of varying intrathoracic pressures and the selection of the projections in which the roentgenograms are to be made. In Sweden roentgenograms are always made under fluoroscopic control. To insure comparable films the same intrabronchial pressure is used for all examinations. To obtain this a water manometer is connected to the patient's mouth.