![]() However, its application for the imaging of pulmonary arteries is still in its infancy. Optical coherence tomography (OCT) is an emerging technique capable of producing high-resolution optical images it has been widely used in ophthalmic and coronary artery imaging ( 1, 2). Keywords: Optical coherence tomography (OCT) human body peripheral pulmonary arteries imaging method SaO2 recovered to pre-imaging levels after oxygen inhalation.Ĭonclusions: IPI is safe and effective for OCT of peripheral pulmonary arteries. Decreased blood oxygen saturation (SaO2) was associated with 9% and 30% segments (P<0.01) in the COI (mean decrease, 8.4%☓.6%) and IPI groups (mean decrease, 12.1%±5.3% P<0.05) respectively. Mean inflation pressure and flushing speed were higher during IPI than COI (0.62☐.15 vs. IPI produced more optimal images than COI (88% vs. Results: We performed OCT of 33 vessel segments by both methods. ![]() The percentage of optimal images, inflation pressure, flushing speeds and complications were compared between the two methods. In the IPI, contrast agent was used as an indicator of balloon inflation meanwhile increases in flushing speed of the replacement fluid. OCT was performed using both the conventional OCT imaging method (COI) and the improved pulmonary artery imaging method (IPI). Methods: We recruited eight patients (five men average age, 48☑2 years peripheral pulmonary artery thrombosis, three patients idiopathic pulmonary hypertension, three patients interstitial lung disease, two patients) who underwent OCT of the peripheral pulmonary arteries in the First Affiliated Hospital of Guangzhou Medical University and Guangzhou Institute of Respiratory Diseases, between September 2009 and September 2010.
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