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. 2022 Jun 28;305(2):466–476. doi: 10.1148/radiol.220492

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© 2022 by the Radiological Society of North America, Inc.

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Xenon 129 (129Xe) gas-transfer MRI and CT scans of pulmonary vessels in a 59-year-old never-hospitalized female participant with post-acute COVID-19 syndrome (red blood cell [RBC]:barrier = 0.26 and CT blood volume in vessels with cross-sectional area ≤5 mm2 normalized to total blood volume = 62%). (A) 129Xe ventilation MRI scan. (B) 129Xe barrier MRI scan. (C) 129Xe RBC MRI scan. (D) CT vessel tree. Cyan represents 129Xe MRI ventilation (xenon in the gas compartment), green represents 129Xe barrier signal intensity (xenon in the barrier compartment), and magenta represents 129Xe RBC signal intensity (xenon in the RBC compartment). — Xenon 129 (¹²⁹Xe) gas-transfer MRI and CT scans of pulmonary vessels in a 59-year-old never-hospitalized female participant with post-acute COVID-19 syndrome (red blood cell [RBC]:barrier = 0.26 and CT blood volume in vessels with cross-sectional area ≤5 mm² normalized to total blood volume = 62%). (A) ¹²⁹Xe ventilation MRI scan. (B) ¹²⁹Xe barrier MRI scan. (C) ¹²⁹Xe RBC MRI scan. (D) CT vessel tree. Cyan represents ¹²⁹Xe MRI ventilation (xenon in the gas compartment), green represents ¹²⁹Xe barrier signal intensity (xenon in the barrier compartment), and magenta represents ¹²⁹Xe RBC signal intensity (xenon in the RBC compartment).