How is the radiographic assessment of neonatal lung volume performed?

Question

Quizplus · Accepted Answer

Radiographic assessment of lung volume takes considerable practice. The novice is cautioned that, although, in general, lung volume can be assessed by counting the number of posterior ribs seen above the diaphragm, radiographs of neonates are usually anterior-to-posterior views, and counting ribs requires the juxtaposition of an anterior structure (the diaphragm) against a posterior structure (the rib interfacing with the diaphragm). This method assesses a three-dimensional object (the lung) with a two-dimensional picture (the radiograph) and is vulnerable to technician-selected focus angles. It is possible, then, to underestimate or overestimate inflation.

How Is the Radiographic Assessment of Neonatal Lung Volume Performed