Sur l'emploi des rayons X dans le diagnostic de la tuberculose pulmonaire / by J.F. Halls Dally.

  • Dally, John Frederick Halls, 1877-1944.
Date:
1904
Catalogue details

Licence: In copyright

Credit: Sur l'emploi des rayons X dans le diagnostic de la tuberculose pulmonaire / by J.F. Halls Dally. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    uimmiiuiiiiiiiuiiiimiiuiiiiiiiiuiiimu niunHinnu^uiuniTiTmnmnmmMuiimniinnmniiiiiiiiiitnntnnnitii i7mnmunnmiunuMi.iiiiiiiiii:nuutiniiiiiMii*u: • -ww*wW»rfVWW¥VW»»««#*W¥WVVw - . SUli L'KMPLOI DES UAVONS X dans le DIAGNOSTIC DE LA TUBERCULOSE PULMONAIRE par le Dr J. F. HALLS DALLY The Roentgen rays, accidentally discovered by Prof. Roentgen of Wurzburg, towards the close of the year 1890, in addition to their well-known uses in the diagnosis and treatment of surgical diseases, have now come to play a most important part in the diagnosis and prognosis of diseases of the chest. The radiograph of a normal thorax (fig. 1) presents a well-defined median opacity, limited by parallel vertical margins, on each side of which appears a « transradiant » (permeable to the X rays) area, crossed by curved and arching shadows. This opacity is caused by the spine, sternum, and mediastinum with its contents; from the upper part of this stretch two shadows, upwards and outwards, corresponding to the clavicles. Willi the tube posteriorly, a shadow, in outline somewhat triangular, is seen to extend more to the left than the right of the thorax. This does not obscure the outline of the curved shadows referred to above, which represent the libs, and corresponds to the heart and pericardium. With the IIHoroscope a pulsation synchronous with each heart-beat may be observed. Alongside the mediastinal opacity and following the outlines of the cardiac shadow arc seen in many radiographs faint lines the nature of which is still uncertain (fig. 1 b. . It is probable that they arc radiographically continuous with the junction of the parietal pleura with the pericardium. Other normal shadows are caused by the scapulae. Another somewhat dense triangular shadow occurs in muscular subjects, and is due to the large muscles of the shoulder- girdle, chiefly the trapezius and peclorales major and minor. On both sides of the median opacity a clear zone corresponds to each lung, which in health is transradiant from apex to base, thus