389. Invest Radiol. 1995 Feb;30(2):79-86.
Radiation-induced lung injury using a pig model. Evaluation by high-resolution
computed tomography.
Takahashi M(1), Balazs G, Pipman Y, Moskowitz GW, Palestro CJ, Eacobacci T, Khan
A, Herman PG.
Author information:
(1)Department of Radiology, Long Island Jewish Medical Center, Albert Einstein
College of Medicine, New Hyde Park, NY 11042, USA.
RATIONALE AND OBJECTIVES: To assess the early phase of radiation-induced lung
injury using high-resolution computed tomography (CT) under experimental
conditions and to perform precise CT-pathologic correlation.
METHODS: Five Yorkshire pigs received a single dose of 12.5 Gy to the right lower
lung. Computed tomographic images were obtained at 2-week intervals. The animals
were killed after follow-up periods of 4-16 weeks. The lungs were removed,
inflated, fixed, dried, and sliced corresponding to the CT sections. Computed
tomography, specimen radiography, and histologic findings were correlated.
RESULTS: Various CT findings were observed during the first 16 weeks, including
ground-glass opacity, discrete consolidation, patchy consolidation, thickened
interlobular septum, and bronchovascular bundle. Ground-glass opacity was
associated with thickened alveolar wall and scattered tiny fibrotic foci.
Thickened interlobular septum and bronchovascular bundle were the results of
fibrosis adjacent to these structures. Discrete consolidation correlated with
intraalveolar edema with hemorrhage and infiltration of inflammatory cells.
CONCLUSIONS: High-resolution CT correlated well with pathology of the lung due to
radiation injury as verified by precise radiologic-pathologic correlation.
PMID: 7782191 [PubMed - indexed for MEDLINE]