The Effect of Lung Volume on the Size and Volume of Pulmonary Subsolid Nodules on CT: Intraindividual Comparison between Total Lung Capacity and Tidal Volume
Purpose To examine the effect of lung volume on the size and volume of pulmonary subsolid nodules (SSNs) measured on CT. Materials and Methods A total of 42 SSNs from 31 patients were included. CT examination was first performed at total lung capacity (TLC), and a section containing the nodule wa...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN KO |
| Publicado: |
The Korean Society of Radiology
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/c5ff801030f04bdc950fa249037e6721 |
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| Sumario: | Purpose To examine the effect of lung volume on the size and volume of pulmonary subsolid
nodules (SSNs) measured on CT.
Materials and Methods A total of 42 SSNs from 31 patients were included. CT examination was
first performed at total lung capacity (TLC), and a section containing the nodule was additionally
scanned at tidal volume (TV). The diameter and volume of each SSN, as well as the crosssectional
lung area containing the nodule, were measured. The significance of the changes in
measurements between TLC and TV within the same individuals was evaluated.
Results The lung area and the diameter and volume of SSNs decreased significantly at TV by
12.7 cm2, 0.5 mm, and 46.4 mm3 on average, respectively (p < 0.001), compared to those at TLC.
Changes in lung area between TV and TLC were positively correlated with the change in SSN diameter
(p = 0.027) and volume (p = 0.014). However, after correction (by considering the change
in lung area), the changes in SSN diameter (p = 0.124) and volume (p = 0.062) were not significantly
different.
Conclusion SSN size and volume can be significantly affected by lung volume during CT scans
of the same individuals. |
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