The Rontgen rays in the diagnosis of diseases of the chest. / by Hugh Walsham and G. Harrison Orton.

  • Walsham, Hugh.
Date:
1906
Catalogue details

Licence: In copyright

Credit: The Rontgen rays in the diagnosis of diseases of the chest. / by Hugh Walsham and G. Harrison Orton. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    this device we always have this point shown on the screen. The combination of the two crosses is called the “ Radioguide.” Method of Procedure.—The patient is placed in front of the chassis, supported by rests attached to the frame, and the fluorescent screen adjusted to a suitable height. By means of the cords the tube is moved so that the normal ray falls on the upper edge of the sternal notch, which is then Fig. 14.—The Orthodiagraph. marked on a piece of ground-glass fixed in front of the screen, to serve as a point of reference; this is important, as we are thus able to secure the immobility of the patient, and we also have a fixed point from which measurement may be taken. The tube is now displaced, so that the normal ray described the contour of the organ to be examined, a tracing being made