Natalia Buda1, Agnieszka Skoczylas2, Marcello Demi3, Anna Wojteczek1, Jolanta Cylwik4, Gino Soldati5. 1. Department of Internal Medicine, Connective Tissue Diseases and Geriatric, Medical University of Gdansk, 80-952 Gdansk, Poland. 2. Department of Geriatrics, National Institute of Geriatrics Rheumatology and Rehabilitation, 02-637 Warsaw, Poland. 3. Department of Medical Image Procesing, Fondazione Gabriele Monasterio, 56124 Pisa, Italy. 4. Department of Anaesthesiology and Intensive Therapy, Mazovia Regional Hospital in Siedlce, 08-110 Siedlce, Poland. 5. Interventional and Diagnostic Ultrasound Unit; Valle del Serchio; General Hospital Lucca, 55100 Lucca, Italy.
Abstract
BACKGROUND: This study concerns the application of lung ultrasound (LUS) for the evaluation of the significance of vertical artifact changes with frequency and pleural line abnormalities in differentiating pulmonary edema from pulmonary fibrosis. STUDY DESIGN AND METHODS: The study was designed as a diagnostic test. Having qualified patients for the study, an ultrasound examination was performed, consistent with a predetermined protocol, and employing convex and linear transducers. We investigated the possibility of B-line artifact conversion depending on the set frequency (2 MHz and 6 MHz), and examined pleural line abnormalities. RESULTS: The study group comprised 32 patients with interstitial lung disease (ILD) (and fibrosis) and 30 patients with pulmonary edema. In total, 1941 cineloops were obtained from both groups and analyzed. The employment of both types of transducers (linear and convex) was most effective (specificity 91%, specificity 97%, positive predictive value (PPV) 97%, negative predictive value (NPV) 91%, LR(+) 27,19, LR(-) 0.097, area under curve (AUC) = 0.936, p = 7 × 10-6). INTERPRETATION: The best accuracy in differentiating the etiology of B-line artifacts was obtained with the use of both types of transducers (linear and convex), complemented with the observation of the conversion of B-line artifacts to Z-line.
BACKGROUND: This study concerns the application of lung ultrasound (LUS) for the evaluation of the significance of vertical artifact changes with frequency and pleural line abnormalities in differentiating pulmonary edema from pulmonary fibrosis. STUDY DESIGN AND METHODS: The study was designed as a diagnostic test. Having qualified patients for the study, an ultrasound examination was performed, consistent with a predetermined protocol, and employing convex and linear transducers. We investigated the possibility of B-line artifact conversion depending on the set frequency (2 MHz and 6 MHz), and examined pleural line abnormalities. RESULTS: The study group comprised 32 patients with interstitial lung disease (ILD) (and fibrosis) and 30 patients with pulmonary edema. In total, 1941 cineloops were obtained from both groups and analyzed. The employment of both types of transducers (linear and convex) was most effective (specificity 91%, specificity 97%, positive predictive value (PPV) 97%, negative predictive value (NPV) 91%, LR(+) 27,19, LR(-) 0.097, area under curve (AUC) = 0.936, p = 7 × 10-6). INTERPRETATION: The best accuracy in differentiating the etiology of B-line artifacts was obtained with the use of both types of transducers (linear and convex), complemented with the observation of the conversion of B-line artifacts to Z-line.
Authors: Kaustav Mohanty; Yasamin Karbalaeisadegh; John Blackwell; Mir Ali; Behrooz Masuodi; Thomas Egan; Marie Muller Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2020-10-27 Impact factor: 2.725
Authors: Barbara Ruaro; Elisa Baratella; Paola Confalonieri; Marco Confalonieri; Fabio Giuseppe Vassallo; Barbara Wade; Pietro Geri; Riccardo Pozzan; Gaetano Caforio; Cristina Marrocchio; Maria Assunta Cova; Francesco Salton Journal: Diagnostics (Basel) Date: 2021-12-07