Novel, non-gadolinium-enhanced magnetic resonance imaging technique of pedal artery aneurysms

Abstract

Non-gadolinium-enhanced magnetic resonance angiography (nMRA) is a noninvasive, contrast-free imaging modality used for visualizing pedal arterial anatomy. We report application of the nMRA technique for detailed arterial imaging in a patient with dorsalis pedis aneurysm. Compared with digital subtraction angiography, we demonstrate that nMRA provides sufficient arterial detail needed to develop a complex operative plan before vascular intervention without risk of contrast agent or ionizing radiation exposure.

Characterization and suppression of stripe artifact in velocity‐selective magnetization‐prepared unenhanced MR angiography

“…Unlike earlier flow‐sensitive preparation pulses used for subtractive angiography methods, the Fourier‐based VS preparation offers flexible velocity pass‐ and stop‐bands and sharp transition between the 2 bands and therefore enables positive angiographic contrast using single acquisition without subtraction. Although developed for renal angiography for its first application, VS‐MRA has shown great promise for peripheral, cerebral, and pedal angiography as well …”

“…Although developed for renal angiography for its first application, VS-MRA has shown great promise for peripheral, cerebral, and pedal angiography as well. 1,2,[8][9][10]…”

Dorsalis pedis artery aneurysm

“…Gold standard investigation for the patency of the pedal arch is operative angiogram, however, in patients where renal function is a concern VS magnetisation-prepared nMRA has been described as a non-invasive, radiation and contrast free alternative to CT/operative angiogram. It provides an excellent preview of the anatomy pre-operatively without compromising renal function 14…”

Unenhanced Velocity‐Selective MR Angiography (VS‐MRA): Initial Clinical Evaluation in Patients With Peripheral Artery Disease

“…[12][13][14][15][16] Recent studies on this technique (hereafter termed VS-MRA) have shown great promise for diverse arterial territories including renal, peripheral, cerebral, and pedal arteries. 21,22,25,26 This study aimed to evaluate image quality and diagnostic performance of unenhanced VS-MRA in PAD patients with DSA as the reference standard.…”

“…This is superior to the subtractive 3D techniques, which require subtraction between flow‐suppressed and baseline images . Recent studies on this technique (hereafter termed VS‐MRA) have shown great promise for diverse arterial territories including renal, peripheral, cerebral, and pedal arteries . This study aimed to evaluate image quality and diagnostic performance of unenhanced VS‐MRA in PAD patients with DSA as the reference standard.…”