. Radiography and radio-therapeutics . Lateral, (2) antero-posterior. Shadows ofthe foreign body areobtained in two posi-tions on one plate bymaking the first ex-posure with the eye ,.,,-.• i *^ f , . 1 A. ^^^- 158-—•^lu^li reduced facsimile of a chart. lookmg upwards, tJie ^^.^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ -^^g j^^^^ ^^^ ^een supplied by second with the eye the Suook Rdntgeu Manufacturing Co., who are the makers ofIT- J ,„^„r^,.Jc, this instrument.) looking downwards. Movement indicates the position of the body in relation to the antero-posterior plate should also help

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. Radiography and radio-therapeutics . Lateral, (2) antero-posterior. Shadows ofthe foreign body areobtained in two posi-tions on one plate bymaking the first ex-posure with the eye ,.,,-.• i *^ f , . 1 A. ^^^- 158-—•^lu^li reduced facsimile of a chart. lookmg upwards, tJie ^^.^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ -^^g j^^^^ ^^^ ^een supplied by second with the eye the Suook Rdntgeu Manufacturing Co., who are the makers ofIT- J ,„^„r^,.Jc, this instrument.) looking downwards. Movement indicates the position of the body in relation to the antero-posterior plate should also help to locate the position of theforeign body. This method is necessarily inaccurate, and can only beused to determine the presence of a foreign body. Should operationbe necessary, then an exact localisation by the Mackenzie Davidson orother precise method must be carried out. In regions of the body, suchas the thorax and abdomen, the same measures may be radiograms of the thorax in the antero-posterior and. 186 RADIOGRAPHY

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