The presence of the hyperdense basilar artery (HDBA) sign, which indicates basilar artery occlusion (BAO), plays an important role in the early diagnosis and intervention in patients with acute ischemic stroke. However, qualitative and quantitative assessment of the HDBA sign is challenging. This case report describes a 60-year-old woman with a history of diabetes mellitus, hypertension, and cerebral infarction. She developed progressive loss of consciousness and ataxic respiration. A noncontrast-enhanced head computed tomography (CT) scan performed three hours after symptom onset revealed the HDBA sign compared with previously obtained CT images. Quantitative measurements revealed a significant increase in Hounsfield units (HUs) in the basilar artery. Subsequent three-dimensional CT angiography confirmed the occlusion of the vertebrobasilar artery. This case highlights the importance of comparing current and previous imaging findings in detecting the HDBA sign. Quantitative HU measurements may further aid diagnosis. Early detection of the HDBA sign on noncontrast-enhanced head CT is critical for expediting the diagnosis and treatment of BAO.
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Early Detection of Hyperdense Basilar Artery Signs Through Comparison With Previous Images.
Cureus
August 2024
Department of Neurosurgery, International University of Health and Welfare, Narita Hospital, Narita, JPN.
The presence of the hyperdense basilar artery (HDBA) sign, which indicates basilar artery occlusion (BAO), plays an important role in the early diagnosis and intervention in patients with acute ischemic stroke. However, qualitative and quantitative assessment of the HDBA sign is challenging. This case report describes a 60-year-old woman with a history of diabetes mellitus, hypertension, and cerebral infarction.
View Article and Find Full Text PDFDiagnostic and prognostic computed tomography imaging markers in basilar artery occlusion (Review).
Exp Ther Med
September 2021
Department of Neurology, 'George Emil Palade' University of Medicine, Pharmacy, Sciences and Technology, 540142 Târgu Mureș, Romania.
Acute ischemic stroke treatment has been revolutionized by the addition of mechanical and aspiration thrombectomy. Randomized controlled trials have proven beyond doubt, the substantial clinical impact of endovascular interventions in anterior circulation territory strokes. Unfortunately, patients with vertebrobasilar ischemic stroke could not be included in these early trials due to inherent clinical, radiological, and prognostic particularities of posterior circulation ischemia; thus, indications for the treatment of posterior fossa strokes and basilar artery occlusion (BAO) are mainly based on retrospective studies and registries.
View Article and Find Full Text PDFAssessment of Vessel Density on Non-Contrast Computed Tomography to Detect Basilar Artery Occlusion.
West J Emerg Med
April 2020
Atrium Health's Carolinas Medical Center, Department of Emergency Medicine, Charlotte, North Carolina.
Introduction: Basilar artery occlusion (BAO) may be clinically occult due to variable and non-specific symptomatology. We evaluated the qualitative and quantitative determination of a hyperdense basilar artery (HDBA) on non-contrast computed tomography (NCCT) brain for the diagnosis of BAO.
Methods: We conducted a case control study of patients with confirmed acute BAO vs a control group of suspected acute stroke patients without BAO.
Hyperdense basilar artery sign diagnoses acute posterior circulation stroke and predicts short-term outcome.
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Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University at Shenyang, 39 Hua Xiang Road, Tie Xi District, Shenyang, China.
Introduction: It is well established that the hyperdense middle cerebral artery sign is a specific marker for early ischemia in anterior circulation. However, little is known about the hyperdense basilar artery sign (HDBA) in posterior circulation. Our aim was to determine whether the HDBA sign has utility in early diagnosis of acute posterior circulation stroke and prediction of short-term outcome.
View Article and Find Full Text PDFHyperdense basilar artery sign on unenhanced CT predicts thrombus and outcome in acute posterior circulation stroke.
Stroke
January 2009
Massachusetts General Hospital, Department of Neurology, MGH Stroke Research Center, 175 Cambridge Street, suite 300; Boston, MA 02114, USA.
Background And Purpose: In acute stroke patients, the presence of a hyperdense middle cerebral artery sign on unenhanced CT is a specific but insensitive indicator of acute thrombosis. Our purpose was to determine whether the hyperdense basilar artery (HDBA) sign has utility in detecting thrombosis and predicting outcome in patients presenting with signs and symptoms of posterior circulation stroke.
Methods: Unenhanced CT scans obtained within 24 hours of symptom onset in 95 patients with suspected posterior circulation stroke were reviewed.
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