Respirology : official journal of the Asian Pacific Society of Respirology
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The management of chronic thromboembolic pulmonary hypertension (CTEPH) is dependent on the extent of pulmonary artery obstruction, which is usually evaluated by planar perfusion scanning and CT pulmonary angiography (CTPA). We previously reported that SPECT perfusion scanning is more sensitive than planar scanning for detecting vascular obstruction in CTEPH. The purpose of this study is to compare SPECT with CTPA for detecting segmental pulmonary artery obstruction in CTEPH. ⋯ SPECT is more sensitive than CTPA for identifying obstructed segments in this small sample of CTEPH patients. However, even SPECT under-represents the extent of vascular obstruction from this disease.
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Editorial Comment
Using computed tomography to measure the site of airflow obstruction.