Role of pulmonary perfusion magnetic resonance imaging for the diagnosis of pulmonary hypertension: A review

Figure 3 Comparing single photon emission computed tomography and dynamic contract enhanced perfusion magnetic resonance imaging for identifying perfusion defects in chronic thromboembolic pulmonary hypertension patient. Left to right, single photon emission computed tomography and Perfusion magnetic resonance imaging (MRI) at peak enhancement of a chronic thromboembolic pulmonary hypertension patient showing perfusion defects in right and left lower lobes. On the right, semi-quantitative pulmonary blood flow, pulmonary blood volume & mean transit time maps acquired from perfusion MRI demonstrating reduced flow at the same locations. Note left to right scale depicting lower to higher pulmonary blood flow values. Citation: Johns CS, Swift AJ, Rajaram S, Hughes PJC, Capener DJ, Kiely DG, Wild JM. Lung perfusion: MRI vs. SPECT for screening in suspected chronic thromboembolic pulmonary hypertension. J Magn Reson Imaging 2017; 46: 1693-1697 [PMID: 28376242 DOI: 10.1002/jmri.25714].