This study aimed to assess the feasibility for applying enhanced acceleration-selective arterial spin labeling (eAccASL) to non-electrocardiogram-gated and non-enhanced peripheral MRA. We compared eAccASL and background suppressed single shot turbo field echo (TFE)-triggered angiography non-contrast-enhanced sequence (BASS TRANCE) required electrocardiographic-gating in eight volunteers and three patients. In the volunteer study, eAccASL demonstrated a comparable arterial visualization compared with BASS TRANCE. In patient observation, the advantages with eAccASL were found in arterial visualization on the collateral vessels and without artifacts affected by arrhythmia events.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8424028PMC
http://dx.doi.org/10.2463/mrms.tn.2019-0172DOI Listing

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Article Synopsis
  • - The study investigates the effectiveness of a new lower extremity MRA technique (TSE-Acc), which uses enhanced acceleration-selective arterial spin labeling, in diagnosing peripheral arterial disease (PAD) without relying on ECG or contrast agents, thus reducing risks like nephrogenic systemic fibrosis.
  • - Nine healthy volunteers and a patient with PAD underwent MRI scans to assess various metrics like signal intensity ratio (SIR), contrast-to-noise ratio (CNR), arterial visibility, and artifact contamination, using statistical tests for analysis with significance set at p < 0.05.
  • - The results indicated that while SIRs were similar across three MRA methods, TSE-Acc showed significantly higher CNRs in some arteries and
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Purpose: Enhanced acceleration selective arterial spin labeling (eAccASL) was introduced as non-enhanced and non-gated magnetic resonance angiography (MRA). This technique has not been applied to hand MRA. The objective of this study was to optimize the eAccASL for MRA of the hands and to investigate the factors for MRA visibility of the hands.

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This study aimed to assess the feasibility for applying enhanced acceleration-selective arterial spin labeling (eAccASL) to non-electrocardiogram-gated and non-enhanced peripheral MRA. We compared eAccASL and background suppressed single shot turbo field echo (TFE)-triggered angiography non-contrast-enhanced sequence (BASS TRANCE) required electrocardiographic-gating in eight volunteers and three patients. In the volunteer study, eAccASL demonstrated a comparable arterial visualization compared with BASS TRANCE.

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Purpose: A new sequence for intracranial MRA is developed, named enhanced acceleration-selective arterial spin labeling (eAccASL), to improve main artery visualization at middle cerebral artery (MCA). The aim of this study is to assess the visualization improvement using eAccASL, compared with the previously developed AccASL.

Methods: eAccASL and AccASL were performed in 8 healthy volunteers and images were compared between the 2 sequences.

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