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Brain
Differential Diagnosis
Extra-Axial Spaces and Subarachnoid Cisterns
Modality-Specific Imaging Findings
FLAIR Hyperintense Sulci
FLAIR Hyperintense Sulci
Miral D. Jhaveri, MD, MBA; Bronwyn E. Hamilton, MD
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DIFFERENTIAL DIAGNOSIS

    ESSENTIAL INFORMATION

    • Key Differential Diagnosis Issues

      • Helpful Clues for Common Diagnoses

        • Helpful Clues for Less Common Diagnoses

          • Helpful Clues for Rare Diagnoses

            • Other Essential Information

              • Alternative Differential Approaches

                Selected References

                1. Hacein-Bey L et al: Hyperintense ipsilateral cortical sulci on FLAIR imaging in carotid stenosis: ivy sign equivalent from enlarged leptomeningeal collaterals. Clin Imaging. 38(3):314-7, 2014
                2. Harreld JH et al: Elevated cerebral blood volume contributes to increased FLAIR signal in the cerebral sulci of propofol-sedated children. AJNR Am J Neuroradiol. 35(8):1574-9, 2014
                3. Morris JM et al: Increased signal in the subarachnoid space on fluid-attenuated inversion recovery imaging associated with the clearance dynamics of gadolinium chelate: a potential diagnostic pitfall. AJNR Am J Neuroradiol. 28(10):1964-7, 2007
                4. Stuckey SL et al: Hyperintensity in the subarachnoid space on FLAIR MRI. AJR Am J Roentgenol. 189(4):913-21, 2007
                5. Cianfoni A et al: Artifact simulating subarachnoid and intraventricular hemorrhage on single-shot, fast spin-echo fluid-attenuated inversion recovery images caused by head movement: A trap for the unwary. AJNR Am J Neuroradiol. 27(4):843-9, 2006
                6. Frigon C et al: Supplemental oxygen causes increased signal intensity in subarachnoid cerebrospinal fluid on brain FLAIR MR images obtained in children during general anesthesia. Radiology. 233(1):51-5, 2004
                7. Bozzao A et al: Cerebrospinal fluid changes after intravenous injection of gadolinium chelate: assessment by FLAIR MR imaging. Eur Radiol. 13(3):592-7, 2003
                8. Maeda M et al: Abnormal hyperintensity within the subarachnoid space evaluated by fluid-attenuated inversion-recovery MR imaging: a spectrum of central nervous system diseases. Eur Radiol. 13 Suppl 4:L192-201, 2003
                Related Anatomy
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                References
                Tables

                Tables

                DIFFERENTIAL DIAGNOSIS

                  ESSENTIAL INFORMATION

                  • Key Differential Diagnosis Issues

                    • Helpful Clues for Common Diagnoses

                      • Helpful Clues for Less Common Diagnoses

                        • Helpful Clues for Rare Diagnoses

                          • Other Essential Information

                            • Alternative Differential Approaches

                              Selected References

                              1. Hacein-Bey L et al: Hyperintense ipsilateral cortical sulci on FLAIR imaging in carotid stenosis: ivy sign equivalent from enlarged leptomeningeal collaterals. Clin Imaging. 38(3):314-7, 2014
                              2. Harreld JH et al: Elevated cerebral blood volume contributes to increased FLAIR signal in the cerebral sulci of propofol-sedated children. AJNR Am J Neuroradiol. 35(8):1574-9, 2014
                              3. Morris JM et al: Increased signal in the subarachnoid space on fluid-attenuated inversion recovery imaging associated with the clearance dynamics of gadolinium chelate: a potential diagnostic pitfall. AJNR Am J Neuroradiol. 28(10):1964-7, 2007
                              4. Stuckey SL et al: Hyperintensity in the subarachnoid space on FLAIR MRI. AJR Am J Roentgenol. 189(4):913-21, 2007
                              5. Cianfoni A et al: Artifact simulating subarachnoid and intraventricular hemorrhage on single-shot, fast spin-echo fluid-attenuated inversion recovery images caused by head movement: A trap for the unwary. AJNR Am J Neuroradiol. 27(4):843-9, 2006
                              6. Frigon C et al: Supplemental oxygen causes increased signal intensity in subarachnoid cerebrospinal fluid on brain FLAIR MR images obtained in children during general anesthesia. Radiology. 233(1):51-5, 2004
                              7. Bozzao A et al: Cerebrospinal fluid changes after intravenous injection of gadolinium chelate: assessment by FLAIR MR imaging. Eur Radiol. 13(3):592-7, 2003
                              8. Maeda M et al: Abnormal hyperintensity within the subarachnoid space evaluated by fluid-attenuated inversion-recovery MR imaging: a spectrum of central nervous system diseases. Eur Radiol. 13 Suppl 4:L192-201, 2003