Browsing by Author "Hathaichanok Choochuay"

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    Visibility and variability of pleural fissures on normal digital chest radiographs of 1,000 healthy adults
    (2015-04-01) Thitiporn Suwatanapongched; Chinnarat Bua-Ngam; Warawut Sukkasem; Hathaichanok Choochuay; Parinda Charee; Suvipaporn Siripornpitak; Mahidol University; Hatyai Hospital; Nopparat Rajathanee Hospital
    © Japan Radiological Society 2015. Purpose: To investigate the visibility and variability of pleural fissures on digital chest radiographs.Methods: Posteroanterior digital chest radiographs of 566 males and 434 females were retrospectively reviewed for the frequencies and/or appearances of various pleural fissures. Results: The right only, left only and bilateral minor fissures were visible in 722 (72.2 %), 1 (0.1 %) and 7 (0.7 %) subjects, respectively. The right minor fissures were visible as more than one line in 219 (30.0 %) subjects, i.e., 2, 3 and 4 lines in 214 (29.3 %), 4 (0.5 %) and 1 (0.1 %), respectively. The 955 visible right minor fissures exhibited variable length (<1/3 of right hemithorax, 17.8 %; 1/3–2/3, 60.1 %; >2/3, 22.1 %), alignment (medial higher 40.9 %; lateral higher 54.2 %; horizontal 4.8 %) and contour (convex upward 68.6 %; convex downward 2.7 %; flat 24.9 %; sigmoid 3.8 %). Superolateral major fissures were visualized in 14.8 % (right only 3.0 %; left only 9.0 %; bilateral 2.8 %), superomedial major fissures in 0.3 % (right 0.1 %; left 0.2 %), vertical fissures in 0.5 % (right 0.2 %; left 0.3 %), inferior accessory fissures in 5.4 % (right 4.8 %; left 0.6 %), right superior accessory fissures in 1.2 % and azygos fissures in 0.2 %. Conclusion: The right minor fissure was most frequently visible and exhibited variable appearances. Other pleural fissures were occasionally seen.