Time-of-flight MR angiography: comparison of 3.0-T imaging and 1.5-T imaging--initial experience.

Intracranial three-dimensional time-of-flight (TOF) magnetic resonance (MR) angiography was performed in seven healthy volunteers and eight patients with both 1.5-T and 3.0-T MR systems with standard and high spatial resolutions (true voxel sizes, 0.48 x 0.75 x 2.00 mm and 0.30 x 0.44 x 1.00 mm, respectively). Superior image quality and significantly better depiction of small vessel segments and vascular disease were observed at high-spatial-resolution 3.0-T TOF MR angiography but not at standard 1.5-T or standard 3.0-T TOF MR angiography (P <.01, respectively). Intracranial high-spatial-resolution TOF MR angiography at 3.0-T imaging provides diagnostic improvement in studies of cerebrovascular disease.

[1]  G. Cosnard,et al.  Diagnosis of intracranial aneurysms: accuracy of MR angiography at 0.5 T. , 1998, AJNR. American journal of neuroradiology.

[2]  J M Wardlaw,et al.  Can noninvasive imaging accurately depict intracranial aneurysms? A systematic review. , 2000, Radiology.

[3]  T. Metens,et al.  Intracranial aneurysms: detection with gadolinium-enhanced dynamic three-dimensional MR angiography-initial results. , 2000, Radiology.

[4]  Alan H Wilman,et al.  Application of magnetization transfer at 3.0 T in three‐dimensional time‐of‐flight magnetic resonance angiography of the intracranial arteries , 2002, Journal of magnetic resonance imaging : JMRI.

[5]  G. Schuierer,et al.  Intracranial vascular stenosis and occlusion: comparison of 3D time-of-flight and 3D phase-contrast MR angiography , 1998, Neuroradiology.

[6]  A. Wilman,et al.  Vessel contrast at three Tesla in time-of-flight magnetic resonance angiography of the intracranial and carotid arteries. , 2002, Magnetic resonance imaging.

[7]  J M Wardlaw,et al.  Intracranial aneurysms: CT angiography and MR angiography for detection prospective blinded comparison in a large patient cohort. , 2001, Radiology.

[8]  D Chien,et al.  Evaluation of cerebral aneurysms with high-resolution MR angiography using a section-interpolation technique: correlation with digital subtraction angiography. , 1999, AJNR. American journal of neuroradiology.

[9]  Y Horikawa,et al.  Intracranial aneurysms: diagnostic accuracy of three-dimensional, Fourier transform, time-of-flight MR angiography. , 1994, Radiology.

[10]  D. Nichols,et al.  Blinded prospective evaluation of sensitivity of MR angiography to known intracranial aneurysms: importance of aneurysm size. , 1994, AJNR. American journal of neuroradiology.

[11]  M. Bernstein,et al.  High‐resolution intracranial and cervical MRA at 3.0T: Technical considerations and initial experience , 2001, Magnetic resonance in medicine.

[12]  W. Edelstein,et al.  The intrinsic signal‐to‐noise ratio in NMR imaging , 1986, Magnetic resonance in medicine.

[13]  K. Tsuchiya,et al.  Preliminary evaluation of volume-rendered three-dimensional display of time-of-flight MR angiography in the diagnosis of intracranial aneurysms , 2001, Neuroradiology.

[14]  M. Takahashi,et al.  MR angiography of intracranial aneurysms: a comparison of 0.5 T and 1.5 T. , 1997, Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society.

[15]  J S Lewin,et al.  High Resolution, Magnetization Transfer Saturation, Variable Flip Angle, Time‐of‐Flight MRA in the Detection of Intracranial Vascular Stenoses , 1995, Journal of computer assisted tomography.