2.3 Radiological imaging’s evaluation
High-resolution CT(HRCT) scans of all children were evaluated for the
presence and distribution of the following findings: air-space
consolidation, ground glass attenuation, crazy-paving pattern, and
Poorly defined centrilobular nodules.14-17 Two
investigators independently reviewed the HRCT images, and discrepancies
on these findings were discussed by consensus. Criteria for these
findings were checked in each patient(Figure 1). Crazy-paving pattern
was defined as patchy well-defined areas of ground-glass opacity with
superimposed septal thickening.