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CHEST RADIOLOGY Table of Contents   
Year : 2015  |  Volume : 25  |  Issue : 1  |  Page : 44-51
HRCT in cystic fibrosis in patients with CFTR I1234V mutation: Assessment of scoring systems with low dose technique using multidetector system and correlation with pulmonary function tests

1 Department of Radiology, Narayana Health, Bangalore, Karnataka, India
2 Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar
3 Department of Radiology, Hamad Medical Corporation, Doha, Qatar
4 Department of Biostastistics, Hamad Medical Corporation, Doha, Qatar

Correspondence Address:
Dr. Venkatraman Bhat
309 Greenwoods Apartment, Royal Gardenia, Bommasandra, Bangalore - 560 099, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-3026.150144

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Background and Aims: Pulmonary changes in patients with cystic fibrosis (CF) with CFTR I1234V mutation have not been extensively documented. Impact of geographic influence on phenotypical expression is largely unknown. This descriptive clinical study presents the high-resolution computed tomography (HRCT) pulmonary findings and computed tomography (CT) scoring with respect to pulmonary function tests (PFT) in a small subset of CF group. Materials and Methods: We examined 29 patients between 2 and 31 years of age with CFTR I1234V mutation. HRCT and PFT were performed within 2 weeks of each other. Imaging abnormalities on HRCT were documented and analyzed by utilizing the scoring system described by Bhalla et al., Brody et al., Helbich et al.,and Santamaria et al. Efficacy of the scoring system with respect to PFT was compared. Statistical Analysis: Inter-observer reliability of the scoring systems was tested using intraclass correlation (ICC) between the two observers. Spearman correlation coefficients were calculated between the scoring systems and between the scoring systems and PFT results. Results: In our study, right upper and middle lobes were the most frequently involved sites of involvement. Bronchiectasis and peribronchial thickening were the most frequent imaging findings. Scores with all four scoring systems were reproducible, with good ICC coefficient of 0.69. There was good agreement between senior radiologists in all scoring systems. Conclusion: We noted pulmonary imaging abnormalities in a large majority (96%) of our CF patients. There was no significant difference in the CT scores observed from various systems. The CT evaluation system by Broody is detailed and time consuming, and is ideal for research and academic setup. On the other hand, the systems by Bhalla and Santamaria are easy to use, quick, and equally informative. We found the scoring system by Santamaria preferable over that of Bhalla by virtue of additional points of evaluation and ease of use, and therefore better suited for busy clinical practice.

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