Dynamic 3D Blood Pool SPECT Imaging Using a Full-Ring Multidetector CZT SPECT Scanner for Diagnosing Thoracic Aneurysm.
case_report · Level V
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- Record sourced from PubMed, PMID 42640619.
- Also identified by DOI 10.1097/RLU.0000000000006679.
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Abstract
An 85-year-old woman underwent chest computed tomography (CT) during follow-up for COVID-19 infection, which incidentally revealed a 31-mm mass below the tracheal bifurcation. Because contrast-enhanced CT was not recommended due to renal impairment, endoscopic ultrasonography was performed and demonstrated intralesional blood flow, suggesting a vascular lesion. Dynamic and static 99mTc-human serum albumin-diethylenetriamine pentaacetic acid SPECT imaging using a full-ring multidetector CZT SPECT scanner was subsequently performed. Static images confirmed the vascular nature of the lesion, while dynamic 3D SPECT with 2-second serial acquisition and time-activity curve analysis demonstrated peak enhancement synchronized with the aorta, enabling definitive diagnosis of an aneurysm.