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KMID : 0382619930130010533
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Hanyang Journal of Medicine
1993 Volume.13 No. 1 p.533 ~ p.548
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Radiations-Induced Pulmonary Injury: CT & MR findings
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Abstract
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We retrospectively analyzed the CT(10 cases) and MR (5 cases) findings in 10 patients with radiation -induced pulmonary injury.
On CT studies, 8 cases showed fibrotic change and 6 of them also showed solid consolidation with bronchiectasis. The differential diagnosis of radiation-induced injury from residual or recurrent tumor was possible on CT studies which was
impossible
on
plain chest radiogrphy(2 cases) or MR study(1 cases.).
On MR studies, 4 cases showed solid consolidation with bronchiectasis and fibrosis. The signal intensity was isointense compared with that of the muscle on T1W1(5 cases), and hyperintense on PDWI and T2WI(3 cases).The lesions enhanced well on
Gd-DTPA enhanced study(4 cases), the residual or recurrent tumor showed the same signal intensity and degree of ehahancement with radiatin-induced injury(2 cases).
CT and MR are useful for the anatomic details of the large overlapped area of increased density of the radiation-induced pulmonary injury on plain chest radiography. But MR study is not superior to CT on the differentiation of the residual or
recurrent
tumor and radiation-induced injury because the tumor may show the same signal intensity and degree of enhancement with radiation-induced injury.
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KEYWORD
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