L Van fraeyenhoven

Differences in CT density between dependent and nondependent portions of the lung: influence of lung volume.

A L Baert, A. Baert, J. Verschakelen, 1993, AJR. American journal of roentgenology.

Measurement of lung density by means of quantitative CT scanning. A study of correlations with pulmonary function tests.

J. Verschakelen, L. Van fraeyenhoven, A. Heremans, 1992 .