This Article Full Text (PDF) Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Chaussé, C. Search for Related Content PubMed Articles by Chaussé, C.

The Localisation and Extraction of Radio-opaque Objects by Means of the "Light-compasses"

Paris

This excerpt was created in the absence of an abstract.

In November 1938 I had the privilege of reading a paper on this topic before the Section of Otology of the Royal Society of Medicine, and again, in December 1938, before the Annual Congress of the British Institute of Radiology, when I demonstrated my "Stereoradiographic Centring Apparatus" and the "Light-compasses."^*

The subject is now more than ever to the fore and, in this paper, I wish to illustrate the different aspects of the problem of localisation and extraction of projectiles by means of the "light-compasses" and, also, the improvements I have brought in the method since December 1938.

In the November 1939 number of the Journal de Radiologie Belge, Surgeon-General Henrard reviews the methods used in the Great War and points out the advantages and disadvantages of each one of them, thus giving us the benefit of his wide experience.

Two contingencies are to be considered:—

(1) The projectile is embedded in a region the structure of which is shown clearly on radio-graphs. It is then possible to locate the foreign body by means of landmarks in contact with or very near it, and which can also be used as guide-marks by the surgeon. This is the "anatomical localisation."

(2) The foreign body is embedded in the midst of a homogeneous mass: muscles, brain, etc. In this case it is necessary to resort to the "geometrical localisation."