Ricardo Holderbaum do Amaral1, Carlos S Nin2, Vinicius V S de Souza2, Giordano R T Alves2, Edson Marchiori2, Klaus Irion2, Gustavo S P Meirelles2, Bruno Hochhegger2. 1. LABIMED - Medical Imaging Research Laboratoy of Federal University of Health Sciences of Porto Alegre and Santa Casa de Misericordia de Porto Alegre Hospitals, 295 Professor Annes Dias St., Centro Histórico, Porto Alegre, Rio Grande Do Sul, 90020-090, Brazil. rh.doamaral@gmail.com. 2. LABIMED - Medical Imaging Research Laboratoy of Federal University of Health Sciences of Porto Alegre and Santa Casa de Misericordia de Porto Alegre Hospitals, 295 Professor Annes Dias St., Centro Histórico, Porto Alegre, Rio Grande Do Sul, 90020-090, Brazil.
Abstract
OBJECTIVE: To investigate bronchiectasis variations in different computed tomography (CT) respiratory phases, and their correlation with pulmonary function test (PFT) data, in adults. METHODS: Retrospective data analysis from 63 patients with bronchiectasis according to CT criteria selected from the institution database and for whom PFT data were also available. Bronchiectasis diameter was measured on inspiratory and expiratory phases. Its area and matched airway-vessel ratios in both phases were also calculated. Finally, PFT results were compared with radiological measurements. RESULTS: Bronchiectatic airways were larger on inspiration than on expiration (mean cross-sectional area, 69.44 vs. 40.84 mm2; p < 0.05) as were airway-vessel ratios (2.1 vs. 1.4; p < 0.05). Cystic bronchiectasis cases showed the least variation in cross-sectional area (48%). Mean predicted values of forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) were 81.5 and 77.2%, respectively, in the group in which bronchiectasis could not be identified on expiratory images, and 58.3 and 56.0%, respectively, in the other group (p < 0.05). Variation in bronchiectasis area was associated with poorer lung function (r = 0.32). CONCLUSION: Bronchiectasis detection, diameter, and area varied significantly according to CT respiratory phase, with non-reducible bronchiectasis showing greater lung function impairment.
OBJECTIVE: To investigate bronchiectasis variations in different computed tomography (CT) respiratory phases, and their correlation with pulmonary function test (PFT) data, in adults. METHODS: Retrospective data analysis from 63 patients with bronchiectasis according to CT criteria selected from the institution database and for whom PFT data were also available. Bronchiectasis diameter was measured on inspiratory and expiratory phases. Its area and matched airway-vessel ratios in both phases were also calculated. Finally, PFT results were compared with radiological measurements. RESULTS: Bronchiectatic airways were larger on inspiration than on expiration (mean cross-sectional area, 69.44 vs. 40.84 mm2; p < 0.05) as were airway-vessel ratios (2.1 vs. 1.4; p < 0.05). Cystic bronchiectasis cases showed the least variation in cross-sectional area (48%). Mean predicted values of forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) were 81.5 and 77.2%, respectively, in the group in which bronchiectasis could not be identified on expiratory images, and 58.3 and 56.0%, respectively, in the other group (p < 0.05). Variation in bronchiectasis area was associated with poorer lung function (r = 0.32). CONCLUSION: Bronchiectasis detection, diameter, and area varied significantly according to CT respiratory phase, with non-reducible bronchiectasis showing greater lung function impairment.
Entities:
Keywords:
Bronchiectasis; Computed tomography; Pulmonary disease; Pulmonary function test; Thorax
Authors: David M Hansell; Alexander A Bankier; Heber MacMahon; Theresa C McLoud; Nestor L Müller; Jacques Remy Journal: Radiology Date: 2008-01-14 Impact factor: 11.105
Authors: Anne-Sophie Bonnel; Samuel Moon-Ho Song; Krishnaveni Kesavarju; Manisha Newaskar; Craig J Paxton; Daniel A Bloch; Richard B Moss; Terry E Robinson Journal: Pediatr Pulmonol Date: 2004-11
Authors: Lauren S Mott; Karla G Graniel; Judy Park; Nicholas H de Klerk; Peter D Sly; Conor P Murray; Harm A W M Tiddens; Stephen M Stick Journal: Chest Date: 2013-10 Impact factor: 9.410
Authors: Tanya M Martínez; Conrado J Llapur; Tamica H Williams; Cathy Coates; Richard Gunderman; Mervyn D Cohen; Michelle S Howenstine; Osama Saba; Harvey O Coxson; Robert S Tepper Journal: Am J Respir Crit Care Med Date: 2005-07-28 Impact factor: 21.405
Authors: Jennifer J Meerburg; Ieneke J C Hartmann; Sigune Goldacker; Ulrich Baumann; Annette Uhlmann; Eleni-Rosalina Andrinopoulou; Mariette P C Kemner V/D Corput; Klaus Warnatz; Harm A W M Tiddens Journal: Front Immunol Date: 2020-10-30 Impact factor: 7.561