Quantitative density-time measurements in the lungs of children with suspected airway obstruction using ultrafast CT.

摘要: Fourteen children under 3 years of age with possible airway obstruction were evaluated an ultrafast CT scanner, Imatron C-100. Serial 0.05-second multilevel scans obtained through the chest at rates 17 images per second. No patient sedation or contrast medium was used. Time-density curves generated over each lung and specific pulmonary zones compared to characterize normal variation density during inspiration expiration determine abnormal patterns associated obstruction. There a high, positive correlation value (r>0.79) between time/density those regions in which there no focal bronchial low, negative (r=< −0.58) Three studies reconstruction artifacts excluded. Furthermore, results indicate that young generally have denser lungs, particularly expiration, than older adults. This preliminary study suggests offers promising, unique, rapid noninvasive approach for diagnosing childhood.