ArticleTherapeutic advances in neurological disorders2026
Cardiac photon-counting detector computed tomography in acute ischemic stroke: diagnostic accuracy for detection of left atrial appendage thrombus.
Article in Therapeutic advances in neurological disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: In up to one-third of ischemic stroke patients, no cause can be identified. Left atrial appendage (LAA) is the primary anatomical origin of cardiac embolism, yet it is often inadequately assessed in stroke etiological workup. Objectives: The goal of this study was to analyze the diagnostic accuracy of cardiac photon-counting detector computed tomography (PCD-CT) integrated in the acute stroke imaging protocol for detection of LAA thrombus. Design: Retrospective diagnostic accuracy study. Methods: We selected consecutive patients with acute ischemic stroke or transient ischemic attack undergoing emergent cardiac PCD-CT and transesophageal echocardiography (TEE) between 2023 and 2025. Cardiac PCD-CT and TEE were assessed for the detection of LAA thrombus. Patients with and without LAA thrombus (defined by PCD-CT) were compared. Diagnostic performance metrics for cardiac PCD-CT for LAA thrombus detection were calculated using TEE as the gold standard. Results: We included 101 patients, 42 were female (42%), median age was 59 years, 87 patients had acute ischemic stroke (86%). Median time between cardiac PCD-CT and TEE was 2 days. LAA thrombus defined by PCD-CT was present in 12 patients (12%). Patients with LAA thrombus were older (74 vs 58 years, Conclusion: Cardiac PCD-CT integrated as part of the acute stroke imaging protocol is a promising diagnostic tool that may reliably exclude the presence of LAA thrombus.
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