Lung Ultrasonography in Patients With Idiopathic Pulmonary Fibrosis Evaluation of a Simplified Protocol With High-Resolution Computed Tomographic Correlation
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作者:
Vassalou, Evangelia E.
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Univ Hosp Heraklion, Dept Med Imaging, Iraklion, Crete, GreeceUniv Hosp Heraklion, Dept Med Imaging, Iraklion, Crete, Greece
Vassalou, Evangelia E.
[1
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Raissaki, Maria
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Univ Hosp Heraklion, Dept Med Imaging, Iraklion, Crete, GreeceUniv Hosp Heraklion, Dept Med Imaging, Iraklion, Crete, Greece
Raissaki, Maria
[1
]
Magkanas, Eleftherios
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Univ Nottingham Hosp, Dept Med Imaging, Queens Med Ctr, Nottingham, EnglandUniv Hosp Heraklion, Dept Med Imaging, Iraklion, Crete, Greece
Objectives-To compare a simplified ultrasonographic (US) protocol in 2 patient positions with the same-positioned comprehensive US assessments and high-resolution computed tomographic (CT) findings in patients with idiopathic pulmonary fibrosis. Methods-Twenty-five consecutive patients with idiopathic pulmonary fibrosis were prospectively enrolled and examined in 2 sessions. During session 1, patients were examined with a US protocol including 56 lung intercostal spaces in supine/sitting (supine/sitting comprehensive protocol) and lateral decubitus (decubitus comprehensive protocol) positions. During session 2, patients were evaluated with a 16-intercostal space US protocol in sitting (sitting simplified protocol) and left/right decubitus (decubitus simplified protocol) positions. The 16 intercostal spaces were chosen according to the prevalence of idiopathic pulmonary fibrosis-related changes on high-resolution CT. The sum of B-lines counted in each intercostal space formed the US scores for all 4 US protocols: supine/sitting and decubitus comprehensive US scores and sitting and decubitus simplified US scores. High-resolution CT-related Warrick scores (J Rheumatol 1991; 18:1520-1528) were compared to US scores. The duration of each protocol was recorded. Results-A significant correlation was found between all US scores and Warrick scores and between simplified and corresponding comprehensive scores (P<.0001). Decubitus simplified US scores showed a slightly higher correlation with Warrick scores compared to sitting simplified US scores. Mean durations of decubitus and sitting simplified protocols were 4.76 and 6.20 minutes, respectively (P<.005). Conclusions-Simplified 16-intercostal space protocols correlated with comprehensive protocols and high-resolution CT findings in patients with idiopathic pulmonary fibrosis. The 16-intercostal space simplified protocol in the lateral decubitus position correlated better with high-resolution CT findings and was less time-consuming compared to the sitting position.