Lung perfusion scintigraphy prior to lung volume reduction surgery

Area of Science:

• Pulmonary Medicine
• Radiology
• Thoracic Surgery

Background:

• Emphysema heterogeneity impacts lung volume reduction surgery (LVRS) outcomes.
• Accurate preoperative assessment of emphysema heterogeneity is crucial for patient selection.
• Computed tomography (CT) is the standard for evaluating emphysema, but its limitations in assessing heterogeneity are recognized.

Purpose of the Study:

• To determine if lung perfusion scintigraphy (LPS) enhances the preoperative classification of emphysema heterogeneity.
• To compare the accuracy of CT alone versus the combination of CT and LPS in classifying emphysema heterogeneity.
• To evaluate the utility of LPS in patients considered for LVRS.

Main Methods:

• Forty-five LVRS candidates underwent both CT and LPS.
• Emphysema distribution was visually classified into three categories: markedly heterogeneous, intermediately heterogeneous, or homogeneous.
• Imaging results were compared against an objective, CT-based computerized heterogeneity classification.

Main Results:

• The combination of CT and LPS achieved 68 correct classifications, significantly outperforming CT alone (50 correct classifications, p<0.01).
• LPS alone resulted in 40 correct classifications, showing no significant difference compared to CT alone.
• Combined CT and LPS demonstrated superior accuracy in assessing emphysema heterogeneity.

Conclusions:

• Combined CT and LPS provide superior assessment of emphysema heterogeneity before LVRS.
• Integrating functional imaging (LPS) with anatomical imaging (CT) improves preoperative stratification for LVRS.
• This combined approach holds promise for optimizing patient selection and outcomes in LVRS.