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Projectional ==Magnification==In '''projectional radiography ''' ("X-ray") of the thorax''', it the estimated radiographic magnification factor (ERMF) is generally between 1.05 and 1.40,<ref>{{cite web|title=Implementation of unsharpness and noise into the model of the imaging system: Applications to chest and lumbar spine screen-film radiography|url=https://www.diva-portal.org/smash/get/diva2:327957/FULLTEXT01.pdf|author=M Sandborg, D R Dance, and G Alm Carlsson|website=Faculty of Health Sciences, [[Linköping University]]}} Report 90. Jan. 1999. ISRN: LIU-RAD-R-090</ref> meaning that measurements made in the image will be this much larger than the real distance in the patient.
+Magnification
==Normal anatomy==
==Diseases==
*[[X-ray of the thorax in heart failure]]
==References==
{{reflist}}
