Related Experiment Video
Updated: May 25, 2026

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
Published on: August 9, 2024
[Combined ventilation/perfusion SPECT/CT is best for diagnosing pulmonary embolism]
Henrik Gutte1, Jann Mortensen, Ulrik Sloth Kristoffersen
1Klinik for Klinisk Fysiologi & Nuklearmedicin, Rigshospitalet, Denmark. henrikgb@gmail.com
Abstract:
The diagnosis of pulmonary embolism (PE) is usually established by a combination of clinical assessment, D-dimer test and imaging with either lung scintigraphy or pulmonary multidetector computed tomography angiography (CTA). Which of the two methods to use in PE diagnostic has not been determined and very limited data comparing these modalities are available. With the use of hybrid scanners, ventilation/perfusion-single-photon-emission-tomography (V/Q-SPECT) in combination with low-dose CT without contrast enhancement is feasible and should probably be considered first-line imaging in diagnosing PE.
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