Studies on Roentgenographic Detection of Cardiomegaly with Biplane Chest Films

Volume XII ROENTGENOGRAPHIC SCANNING OF THE CHEST

Of all the roentgen examinations, that of the chest is best. Its position is the easiest; it seldom requires contrast media, it is by far the most productive in demonstration of abnormalities; and with the exception of bone films it offers the greatest detail. It has been such a tremendously important tool to medicine that there is a tendency to consider it infallible. However, in the compariso...

Roentgenographic correlation in pulmonary venous hypertension. Prediction of pulmonary venous pressure from plain chest films.

5 : Roentgenographic Studies

Roentgenograms should be obtained judiciously and must not delay patient resuscitation or transfer. Three roentgenograms should be obtained during the secondary survey cervical spine (c-spine), anterior/posterior (AP) chest, and AP pelvis. These films can be taken in the resuscitation area, usually with a portable x-ray unit, during hiatuses in the resuscitation process. Equipment in the resusc...

Studies on the cardiomegaly of the spontaneously hypertensive rat.

Changes in size, morphology, and certain relevant biochemical components of hearts from spontaneously hypertensive and normal Wistar rats were studied comparatively. Groups of rats were killed at stages which represented developing and stable cardiac hypertrophy and approaching cardiac failure. Mitochondrial content was determined by comparing cytochrome oxidase activity per milligram of heart ...

Nucleic acid studies in experimental cardiomegaly.

• The nature of the cellular changes that occur in an enlarging heart are unclear. Whether cardiac enlargement, even in the young, occurs by increase in size of the cell (hypertrophy) or cell division (hyperplasia) or both remains an unsettled question. Mitotic figures, an indication of hyperplasia, have not been convincingly demonstrated by microscopic study of the adult heart even when enlarg...