| 释义 |
† orthodiagraphy Med. Obs.|ɔːθəʊdaɪˈægrəfɪ|
[ad. G. orthodiagraphie (F. Moritz 1900, in Münch. med. Wochenschr. 17 July 992/2): see ortho-, dia-1, and -graphy.]
A technique for producing sketches showing the exact sizes of organs by projecting the shadow formed by a narrow beam of X-rays on to a fluorescent screen perpendicular to the beam and drawing round the shadow.
1904C. Beck Röntgen Ray Diagnosis iii. 44 (heading) Orthodiagraphy. 1907Practitioner Apr. 524 By means of orthodiagraphy..the exact size and shape of an organ or tumour can be ascertained. 1930D. A. Rhinehart Roentgenographic Technique 382/1 (Index), Orthodiagraphy of heart.
Hence orthoˈdiagram, a sketch produced by orthodiagraphy; orthoˈdiagraph, an instrument for orthodiagraphy; orthodiaˈgraphic a., of or pertaining to orthodiagraphy; performed by means of orthodiagraphy; ˌorthodiaˈgraphically adv.
1904C. Beck Röntgen Ray Diagnosis iii. 44 The orthodiagraph made by Hirschmann permits direct tracing by the aid of a movable screen. Ibid., The fact that the size of all skiagraphs is larger than that of the objects they represent, led to the construction of orthodiagraphic apparatus, by the aid of which the exact size of a body is determined. 1907Practitioner Apr. 526 Changes in the size of the heart..can be determined by the system..of measuring orthodiagrams which have been taken direct on paper. 1930D. A. Rhinehart Roentgenographic Technique xvii. 305 With certain types of fluoroscopes or with special attachments that may be fastened to other kinds, orthodiagraphic tracings of the cardiac outlines, giving nearly the exact dimensions of the heart shadow, can be made. 1931P. Kerley Rec. Adv. Radiol. iv. 76 When screening the heart at 2 metres' distance, it takes only twenty seconds for the operator to map out an outline with a pencil, and this measurement is as accurate as that of an orthodiagram. 1938K. C. Clark Positioning in Radiogr. xviii. 290/2 As an alternative to teleradiography,..the orthodiagraph may be used to record the size of the heart, a short anode-film distance being employed. 1938Jrnl. Amer. Med. Assoc. 14 May 1718/1 Trimani found the parapericardial triangular shadow at the left lower arch of the roentgen silhouette of the heart in fifty-seven of 3,568 teleroentgenograms and 400 orthodiagrams which he studied. 1938Brain LXI. 118 Measured Orthodiagraphically, the transverse diameter of his chest was 26 cm. |