Multiple contrast fast spin-echo approach to black-blood intracranial MRA: use of complementary and supplementary information.

Black-blood magnetic resonance angiography (black-blood MRA) could be considered an alternative to time-of-flight (TOF) MRA. In the cases of irregular flow conditions, it could be more advantageous than time-of-flight (TOF) MRA in providing vessel definition and delineation. Proton-density weighted (PDW) multi-slab three-dimensional fast spin-echo (3DFSE) sequences have been used to generate black-blood MRA.

Does the "keyhole" technique improve spatial resolution in MRI perfusion measurements? A study in volunteers.

We examined the potential of the 'keyhole' technique to improve spatial resolution in perfusion-weighted MRI on whole-body imagers with standard gradient hardware. We examined 15 healthy volunteers. We acquired a high-resolution image with 256 phase-encoding steps before a bolus-tracking procedure.

Three-dimensional gadolinium-enhanced MR angiography for aortoiliac inflow assessment plus renal artery screening in a single breath hold.

Purpose: To develop a magnetic resonance (MR) angiography protocol, with use of breath-hold techniques, for simultaneous aortoiliac inflow assessment and renal artery screening in patients with lower extremity ischemia or aortic aneurysm.

Materials And Methods: Breath-hold three dimensional gadolinium-enhanced MR angiography was performed in 50 patients (conventional arteriography in 47 was the standard of reference). After multiple strategies were tested in the first 18 patients, a final protocol was formulated and tested in the subsequent 32 patients.

MR angiography of occlusive disease of the arteries in the head and neck: current concepts.

MR angiography has many applications in the evaluation of cerebrovascular disease (aneurysm, vascular malformation, neoplasm, arterial and venous occlusive disease) [1]. Of these, the most common application may be in the assessment of arterial occlusive disease in patients at risk for stroke [2]. Consequently, the accuracy of MR angiography vs conventional angiography in this assessment will most likely determine the extent to which MR angiography is routinely used in clinical practice.