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Quantitative assessment of change in regional disease patterns on serial HRCT of fibrotic interstitial pneumonia with texture-based automated quantification system

Quantitative assessment of change in regional disease patterns on serial HRCT of fibrotic interstitial pneumonia with texture-based automated quantification system

Authors :
Dong Soon Kim
Jae Woo Song
Sang Min Lee
Young Kyung Lee
Hyun Joo Lee
Joon Beom Seo
Jin Woo Song
Namkug Kim
Ra Gyoung Yoon
Source :
European Radiology.
Publication Year :
2012
Publisher :
Springer Science and Business Media LLC, 2012.

Abstract

To evaluate the usefulness of a texture-based automated quantification system (AQS) for evaluating the extent and interval change of regional disease patterns on initial and follow-up high-resolution computed tomographies (HRCTs) of fibrotic interstitial pneumonia (FIP).Eighty-nine patients with clinically and/or biopsy confirmed usual interstitial pneumonia (UIP) (n = 71) and non-specific interstitial pneumonia (NSIP) (n = 18) were included. An AQS to quantify five disease patterns (ground-glass opacity [GGO], reticular opacity [RO], honeycombing [HC], emphysema [EMPH], consolidation [CONS]) and normal lung was developed. The extent and interval changes of each disease pattern, FS (fibrosis score), TA (total abnormal lung fraction) of entire lung on initial and 1-year follow-up HRCTs were quantified. The agreement between the results of AQS and two readers was assessed. Results of AQS were correlated with forced vital capacity (FVC) and carbon monoxide diffusing capacity (DLco).The Intraclass correlation coefficient (ICC) study revealed acceptable agreement between visual assessment and AQS (r = 0.78, 0.66 for HC; 0.76, 0.61 for FS; 0.64, 0.68 for TA, initial and follow-up HRCTs, respectively). Linear regression analysis revealed the extent of HC, TA on initial CT, interval changes of FS contributed negatively to DLco, and interval changes of FS, TA contributed negatively to FVC.Our AQS is comparable with visual assessment for evaluating the disease extent and the interval changes of FIP on HRCT.

Details

ISSN :
14321084 and 09387994
Database :
OpenAIRE
Journal :
European Radiology
Accession number :
edsair.doi.dedup.....70632bc890066750dbde32a9cd127aec
Full Text :
https://doi.org/10.1007/s00330-012-2634-8