Key result
V/Q SPECT/CT imaging in a patient with pulmonary arterial hypertension revealed localized accumulation and a peculiar distribution of 99mTc just below the pleura.
Why the study?
Does V/Q SPECT/CT imaging detect unique pulmonary blood flow patterns in pulmonary arterial hypertension?
Case Report (n=1)
Does V/Q SPECT/CT imaging detect unique pulmonary blood flow patterns in pulmonary arterial hypertension?
V/Q SPECT/CT imaging may be useful for detecting unique pulmonary blood flow patterns in pulmonary arterial hypertension, extending its utility beyond pulmonary embolism.
May support adjunctive SPECT/CT in select PH cases; hypothesis-generating and should not yet change practice.
Pulmonary hypertension (PH) is a life-threatening disorder, which originates from various aetiologies. Ventilation-perfusion (V/Q) scanning is commonly used to evaluate the differential diagnosis of PH. Meanwhile, previous studies have shown that single-photon emission computed tomography (SPECT)/CT imaging can provide a more detailed analysis for the assessment of pulmonary blood flow. However, there is insufficient evidence supporting the merits of V/Q SPECT/CT image data in detecting pulmonary vascular disease. Here, we report a case of pulmonary arterial hypertension with localized accumulation and peculiar distribution just below the pleura on V/Q SPECT/CT. Our finding is unique, and it suggests that V/Q SPECT/CT image data might be useful to detect blood flow not only in cases of pulmonary embolism, but also in the more commonly encountered PH.
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Suzuki et al. (2021) conducted a case report in Pulmonary arterial hypertension (n=1). V/Q SPECT/CT was evaluated on Localized accumulation and peculiar distribution just below the pleura on V/Q SPECT/CT. V/Q SPECT/CT imaging in a patient with pulmonary arterial hypertension revealed localized accumulation and a peculiar distribution of 99mTc just below the pleura.
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