Noncontrast computed tomographic Hounsfield unit evaluation of cerebral venous thrombosis: a quantitative evaluation
| Autor: | Lubdha M. Shah, David A. Besachio, Karen L. Salzman, Edward P. Quigley |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
medicine.medical_specialty Adolescent Contrast Media Computed tomography Hematocrit Sensitivity and Specificity Computed tomographic Young Adult medicine.artery Hounsfield scale Medicine Humans Radiology Nuclear Medicine and imaging Neuroradiology Aged Aged 80 and over Venous Thrombosis Intracranial venous thrombosis medicine.diagnostic_test business.industry Reproducibility of Results Phlebography Middle Aged medicine.disease Cerebral Veins Venous thrombosis Radiographic Image Interpretation Computer-Assisted Neurology (clinical) Radiology Internal carotid artery Intracranial Thrombosis Cardiology and Cardiovascular Medicine business Tomography X-Ray Computed |
| Zdroj: | Neuroradiology. 55(8) |
| ISSN: | 1432-1920 |
| Popis: | Our objective is to determine the utility of noncontrast Hounsfield unit values, Hounsfield unit values corrected for the patient’s hematocrit, and venoarterial Hounsfield unit difference measurements in the identification of intracranial venous thrombosis on noncontrast head computed tomography. We retrospectively reviewed noncontrast head computed tomography exams performed in both normal patients and those with cerebral venous thrombosis, acquiring Hounsfield unit values in normal and thrombosed cerebral venous structures. Also, we acquired Hounsfield unit values in the internal carotid artery for comparison to thrombosed and nonthrombosed venous structures and compared the venous Hounsfield unit values to the patient’s hematocrit. A significant difference is identified between Hounsfield unit values in thrombosed and nonthrombosed venous structures. Applying Hounsfield unit threshold values of greater than 65, a Hounsfield unit to hematocrit ratio of greater than 1.7, and venoarterial difference values greater than 15 alone and in combination, the majority of cases of venous thrombosis are identifiable on noncontrast head computed tomography. Absolute Hounsfield unit values, Hounsfield unit to hematocrit ratios, and venoarterial Hounsfield unit value differences are a useful adjunct in noncontrast head computed tomographic evaluation of cerebral venous thrombosis. |
| Databáze: | OpenAIRE |
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