File:The American journal of roentgenology, radium therapy and nuclear medicine (1906) (14570593820).jpg

Identifier: americanjournroen09ameruoft (find matches)
Title: The American journal of roentgenology, radium therapy and nuclear medicine
Year: 1906 (1900s)
Authors: American Radium Society American Roentgen Ray Society
Subjects: Radiotherapy X-rays
Publisher: Springfield, Ill. C.C. Thomas
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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raction upward of the diaphragm. 3. Marked density of shadows in theana involved. It is necessary to determine that tinpatient has not previousk had an empy-ema, since all o\ these signs ma\ be presentin certain of its stages. Atelectasis has been The Roentgen-Ray Diagnosis of Non-opaque Foreign Bodies 29- present in a few other of Dr. Jacksonscases, in which the foreign body was alsoopaque. These are not included in thepresent analysis. When definitely provento be present, atelectasis is diagnostic offoreign body, as well as of its location.Compensatory emphysema is present inthe other lung. Tracheal foreign bodies may not sive bronchus, and, because of its flat shape,may allow free passage of air both duringinspiration and expiration, so that obstruc-tive emphysema may be entirely absent.In five of the nine cases of watermelonseeds included in this study, roentgen-raysigns were absent. However, in one of thefive, at a subsequent observation, therewas positive evidence of obstructive
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Fig. -u. Fig. 76. Fig. 7. F. B. No. 904. Partial atelectasis and retained secretions left lower lobe. Slight obstructive emphy-sema left upper lobe. Compensatory emphysema right lung, (a) Inspiration before removal; (b) Inspira-tion after removal. definite roentgen-ray signs, but whenthey are present are nearly as positive asthe signs of bronchial intruders (Fig. 8, a,b). Fortunately, when they do not presentthe roentgen-ray signs, they usually dopresent the most striking and positivephysical signs. Dr. Jackson6 says: Any object smallenough to pass the glottic chink yet toolarge to enter either main bronchus may befound. In the same treatise, he alsodiscusses the influence of shape and charac-ter of surface on the location of the object.Again, the mechanics of the situationdetermine the presence or absence ofroentgen-ray signs. For instance, a water-melon seed, large enough to enter thetrachea, may be too large to enter a emphysema of the left lung (F. B. No.824). The seed had become

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