Rosen's. St. Louis, Mo: Mosby; 2002. Simple Enough

Rosen's. St. Louis, Mo: Mosby; 2002. Simple enough calculations allow to estimate The sizes and volume . For this purpose it is necessary to measure a vertical On the thorax roentgenogram en face: (1) = average diameter in cm; (2) average diameter of a lung in cm = (it is made from Average diameter in cm) (distance from edge of a lung to Thorax walls in cm) == (average diameter in cm) (Width in cm) = Technical problems at measurements: (1) Shades of a shovel and big should not coincide at . (2) Sizes of fields of the roentgenogram at lying on To back of the patient should not be used, as marks of a lung, Since they can be stretched on a thorax wall. Expansion Lung in percentage it is possible to calculate so = ((diameter of a lung) ^3) / ((Diameter in cm) ^3) * 100 % Restrictions: calculation makes sense, if It is supposed that each element - sphere. The form could be better It is described by the type formula . More in detail sm - Light RW. Pleural Diseases, Second Edition. Lea and Febiger.