Pointwise encoding time reduction with radial acquisition in subtraction-based magnetic resonance angiography to assess saccular unruptured intracranial aneurysms at 3 Tesla

Purpose To investigate the clinical utility of pointwise encoding time reduction with radial acquisition in subtraction-based magnetic resonance angiography (PETRA-MRA) and time-of-flight magnetic resonance angiography (TOF-MRA) to evaluate saccular unruptured intracranial aneurysms (UIAs). Methods...

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Bibliographic Details
Published in:Neuroradiology 2021-02, Vol.63 (2), p.189-199
Main Authors: Fu, Qing, Liu, Ding-Xi, Zhang, Xiao-Yong, Deng, Xian-Bo, Zheng, Chuan-Sheng
Format: Article
Language:English
Subjects:
Acoustic noise
Acoustics
Aneurysm
Aneurysms
Angiography
Computed tomography
Correlation coefficient
Correlation coefficients
Diagnostic Neuroradiology
Diagnostic systems
Imaging
Inflow
Magnetic resonance
Medical imaging
Medicine
Medicine & Public Health
Neurology
Neuroradiology
Neurosciences
Neurosurgery
Noise
Noise levels
Parameter identification
Radiology
Receiving
Resonance
Saccule
Sharpness
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Summary:Purpose To investigate the clinical utility of pointwise encoding time reduction with radial acquisition in subtraction-based magnetic resonance angiography (PETRA-MRA) and time-of-flight magnetic resonance angiography (TOF-MRA) to evaluate saccular unruptured intracranial aneurysms (UIAs). Methods A total of 49 patients with 54 TOF-MRA–identified saccular UIAs were enrolled. The morphologic parameters, contrast-to-noise-ratios (CNRs), and sharpness of aneurysms were measured using PETRA-MRA and TOF-MRA. Two radiologists independently evaluated subjective image scores, focusing on aneurysm signal homogeneities and sharpness depictions using a 4-point scale: 4, excellent; 3, good; 2, poor; 1, not assessable. PETRA-MRA and TOF-MRA acoustic noises were measured. Results All aneurysms were detected with PETRA-MRA. The morphologic parameters of 15 patients evaluated with PETRA-MRA were more closely correlated with those receiving computed tomography angiography over those receiving TOF-MRA. No significant differences between PETRA-MRA and TOF-MRA parameters were seen in the 54 UIAs ( p  > 0.10), excluding those with inflow angles ( p  
ISSN:0028-3940
1432-1920
DOI:10.1007/s00234-020-02512-x