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Updated: Jun 12, 2026

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
Published on: August 9, 2024
Three-Color SUVLV-Normalized SPECT/CT to Visualize Dynamic Pulmonary Perfusion in Chronic Thromboembolic Pulmonary
Daiki Kishigami1, Hiroto Shimokawahara1, Kazunori Takahashi2
1Pulmonary Hypertension Center, Department of Cardiology, NHO Okayama Medical Center Okayama Japan.
Background:
Conventional lung perfusion scintigraphy relies on relative tracer distribution and has limited utility for longitudinal assessment of regional pulmonary perfusion in chronic thromboembolic pulmonary hypertension (CTEPH).
Methods And Results:
We applied CT-derived, lung volume-normalized standardized uptake value (SUVLV)-based 3-color SPECT/CT mapping in a patient with CTEPH undergoing staged balloon pulmonary angioplasty followed by pulmonary endarterectomy. This approach visualized regional perfusion redistribution and vascular steal patterns not clearly identified by conventional SPECT/CT and demonstrated close spatial concordance with pulmonary angiographic findings throughout multimodal treatment.
Conclusions:
SUVLV-normalized 3-color SPECT/CT enables intuitive visualization of dynamic pulmonary perfusion redistribution during staged interventions.
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