# Size variation and collapse of emphysema holes at inspiration and expiration CT scan: evaluation with modified length scale method and image co-registration

> Research article (International Journal of COPD, 2017) · cited 12× · AI/ML

**Wikidata**: [openalex:W2736244916](https://www.wikidata.org/wiki/openalex:W2736244916)  
**Source**: https://4ort.xyz/entity/size-variation-and-collapse-of-emphysema-holes-at-inspiration-and-expiration-ct-scan-evaluation-with-modified-length-sca