PMID: 15239430Jul 9, 2004Paper

Comparison of intracranial 3D-ToF-MRA with and without parallel acquisition techniques at 1.5T and 3.0T: preliminary results

Acta Radiologica
J GaaF E Zanella

Abstract

To evaluate the performance of four 3D-ToF magnetic resonance angiography (MRA) sequences with and without integrated parallel acquisition techniques (iPAT) at 1.5T and 3.0T in imaging intracranial vessels. Seven volunteers and 5 patients (4 aneurysms, 1 AVM) underwent 3D-ToF-MRA at 1.5T (Magnetom Sonata) and 3.0T (Magnetom Trio) with and without parallel acquisition techniques (iPAT) using similarly designed 8-channel phased-array head coils. Imaging time of the pulse sequences was set to 7.15 and 7.35 min, respectively. Images were analyzed quantitatively by calculating signal-to-noise (SNR) and contrast-to-noise (CNR) ratios of proximal M2 segments and qualitatively by using a 5-point scale. SNR and CNR were significantly higher for both 3D-ToF sequences at 3.0T compared with both pulse sequences at 1.5T. The highest SNR and CNR were obtained at 3.0T without iPAT. However, because of a higher spatial resolution (matrix 512 x 640) visualization of small vessel details was best at 3.0T with iPAT. Intracranial 3D-ToF-MRA at 3.0T offers superior image quality compared with 1.5T, particular in the delineation of smaller vessels. In contrast to 1.5T, implementation of iPAT at 3.0T is of additional benefit since the high SNR availa...Continue Reading

Citations

Jun 16, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ioannis KoktzoglouRobert R Edelman
Feb 14, 2006·Journal of Magnetic Resonance Imaging : JMRI·Kiaran P McGeeJohn Huston
Mar 29, 2011·The Neuroradiology Journal·H Koga, T Oishi
Sep 8, 2006·Journal of Magnetic Resonance Imaging : JMRI·Matt A BernsteinHeidi A Ward
Jun 12, 2012·European Radiology·Joanna M WardlawUNKNOWN SINAPSE Collaborative Group
Jan 9, 2014·PloS One·Karsten H WredeLale Umutlu
Jul 2, 2009·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Kyoung Eun LeeDo Hoon Kwon
May 9, 2015·Radiologic Clinics of North America·Ruth P Lim, Ioannis Koktzoglou
Apr 15, 2009·Magnetic Resonance Imaging Clinics of North America·Benjamin Y Huang, Mauricio Castillo
Dec 2, 2021·Japanese Journal of Radiology·Koichiro YasakaShigeru Kiryu

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