Cerebral venography using fluid-suppressed STARFIRE.

Area of Science:

• Radiology
• Medical Imaging
• Neuroimaging

Background:

• Noncontrast Magnetic Resonance Venography (MRV) is crucial for visualizing cerebral venous anatomy.
• Existing methods like 2D Time-of-Flight (2D TOF) MRV are sensitive to blood flow velocity, potentially limiting diagnostic accuracy.
• There is a need for flow-independent MRV techniques for robust cerebral venous imaging.

Purpose of the Study:

• To evaluate the performance of fluid-suppressed STARFIRE (Signal Targeting Alternative Radiofrequency and Flow-Independent Relaxation Enhancement) for noncontrast, flow-independent MR venography (MRV) of the brain.
• To compare fluid-suppressed STARFIRE with 2D TOF MRV and contrast-enhanced 3D MRV.
• To assess the depiction of dural venous sinuses and cortical veins.

Main Methods:

• Fluid-suppressed STARFIRE utilizes magnitude subtraction of two inversion recovery-prepared 3D balanced steady-state free precession acquisitions.
• This technique achieves fat and cerebrospinal fluid signal suppression, yielding isotropic cerebral venograms.
• The study compared fluid-suppressed STARFIRE and 2D TOF MRV against contrast-enhanced 3D MRV in seven healthy subjects at 1.5T.

Main Results:

• Fluid-suppressed STARFIRE demonstrated excellent depiction of dural venous sinuses and cortical veins on maximum intensity projection images.
• Qualitative and quantitative analyses showed fluid-suppressed STARFIRE favorably compared to 2D TOF MRV.
• Contrast-enhanced MRV offered superior vein-background contrast and straight sinus visualization, while STARFIRE depicted more venous branches.

Conclusions:

• Fluid-suppressed STARFIRE is a promising noncontrast, flow-independent MRV technique for cerebral venography.
• It offers advantages in visualizing venous anatomy compared to 2D TOF MRV.
• Further research is necessary to establish its accuracy in diagnosing cerebral venous thrombosis.