To investigate whether morphological findings in lung microcirculation of CTEPH patients could be detected on PCD-CT lung images and to identify differences in CT findings between hypo- and hyper-attenuation areas, specifically focusing on the implications of these differences.
Key Findings:
Morphological changes in small pulmonary vessels were detectable using PCD-CT.
Patients exhibited a mosaic perfusion pattern with areas of hypo- and hyper-attenuation, indicating varying degrees of vascular involvement.
Small-vessel arteriopathy was associated with elevated pulmonary vascular resistance and poor hemodynamics, suggesting a link to disease severity.
Interpretation:
The findings suggest that PCD-CT can reveal subtle microvascular changes in CTEPH, which may contribute to understanding the disease's pathophysiology and treatment response, potentially guiding more tailored therapeutic approaches.
Limitations:
Retrospective design limits causal inference, making it difficult to establish direct relationships.
Small sample size may affect generalizability, as results may not apply to larger populations.
Potential selection bias in patient cohort could influence the findings and their applicability.
Conclusion:
PCD-CT provides a promising tool for detecting small-vessel arteriopathy in CTEPH, potentially guiding treatment strategies.
