Publication date: Available online 19 January 2018
Source:Academic Radiology
Author(s): Haixian Qu, Maoqiang Wang, Zhijun Wang, Guokun Ao, Xiaodong Yuan, Qiang Li, Zepeng Ma, Qianru Xu, Jieyu Yan, Yanhua Bai
Rationale and ObjectivesThis prospective study aimed to evaluate the diagnostic performance of dual-input computed tomography perfusion technique (DI-CTP) in identifying the bronchial-pulmonary artery fistula in patients tuberculosis with massive hemoptysis.Material and MethodsTwenty patients with tuberculosis with massive hemoptysis were enrolled from January 2015 to December 2015. The association between DI-CTP parameters and the diagnostic outcomes of digital subtraction angiography was assessed. Diagnostic efficacy of DI-CTP was evaluated by receiver operating curve (ROC) analyses using the diagnostic outcomes of digital subtraction angiography, which is the gold standard for identifying bronchial-pulmonary artery fistula.ResultsCompared to lung segments with normal blood flow (n = 304), those with bronchial-pulmonary artery fistula (n = 164) had a reduced pulmonary flow value, perfusion index (PI) value, and an elevated bronchial artery (BF) value in the DI-CTP scan, which was further confirmed by multivariate logistic regression. ROC analysis showed that PI and bronchial artery has an excellent diagnostic performance (both area under the ROC curve > 0.9, P < .001) and high sensitivity and specificity (from 0.79 to 0.95 at the optimal cutoff). PI has the best diagnostic performance, with an overall diagnostic accuracy of 0.91.ConclusionsDI-CTP scan possesses the diagnostic value for detecting bronchial-pulmonary artery fistula in patients with tuberculosis with massive hemoptysis, providing an alternative diagnostic method.
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