MRI sequences used for DSC

SD-FLASH (simultaneous dual fast low angle shot) was used for monitoring two slices paralelly. Imaging described in [1] was performed using a Siemens Magnetom Vision 1.5T MR scanner. First slice was placed to monitor artery carotid and second to monitor ROI. The tissue within ROI was excited first and readout last, the artery slice was excited last readout first. The location of carotid slice was selected from a set of neighbouring slices. These dataset was obtained by a flow-sensitive SD-FLASH (TE=6 ms, FA=40°, next parameters was the same as in table below) [1].

[1] WIRESTAM, Ronnie, Linda ANDERSSON, Leif ØSTERGAARD. Assessment of Regional Cerebral Blood Flow by Dynamic Susceptibility Contrast MRI Using Different Deconvolution Techniques. Magnetic Resonance in Medicine [online]. 2000, vol. 43(issue 5), 691-700 [cit. 2012-02-08]. Available on: http://onlinelibrary.wiley.com/doi/10.1002/%28SICI%291522-2594%28200005%2943:5%3C691::AID-MRM11%3E3.0.CO;2-B/full

[2] Köstler H, Becker H. The value of gating and flow compensation for measurements of the arterial input function in dynamic susceptibility contrast MRI. MAGMA 1996;4(Suppl.):68.

Performed with: Siemens Magnetom Vision 1.5T [3]

[3] IBARAKI, Masanobu, Hiroshi ITO, Eku SHIMOSEGAWA, Hideto TOYOSHIMA, Keiichi ISHIGAME, Kazuhiro TAKAHASHI, Iwao KANNO a Shuichi MIURA. Cerebral vascular mean transit time in healthy humans: a comparative study with PET and dynamic susceptibility contrast-enhanced MRI. Journal of Cerebral Blood Flow [online]. 2006-05-17, roč. 27(č. 2), 404-413 [cit. 2012-02-08]. DOI: 10.1038/sj.jcbfm.9600337. Dostupné z: http://www.nature.com/doifinder/10.1038/sj.jcbfm.9600337

gradient-echo echo-planar imaging

device: Magnetom Allegra 3T head scanner [4]

[4] KNUTSSON, Linda, Siv BÖRJESSON, Elna-Marie LARSSON, Jarl RISBERG, Lars GUSTAFSON, Ulla PASSANT, Freddy STÅHLBERG a Ronnie WIRESTAM. Absolute quantification of cerebral blood flow in normal volunteers: Correlation between Xe-133 SPECT and dynamic susceptibility contrast MRI. Journal of Magnetic Resonance Imaging [online]. 2007, roč. 26(č. 4), 913-920 [cit. 2012-02-08]. DOI: 10.1002/jmri.21093. Dostupné z: http://doi.wiley.com/10.1002/jmri.21093

[5] SOINNE, L. Cerebral Hemodynamics in Asymptomatic and Symptomatic Patients With High-Grade Carotid Stenosis Undergoing Carotid Endarterectomy. Stroke [online]. 2003-06-12, roč. 34(č. 7), 1655-1661 [cit. 2012-02-08]. DOI: 10.1161/01.STR.0000075605.36068.D9. Dostupné z: http://stroke.ahajournals.org/cgi/doi/10.1161/01.STR.0000075605.36068.D9

PAT off TR=1000ms TE=85ms

PAT off TR=1000ms TE=85ms

t2_hasteirm_fs_tra_mbh t2_tirm_fs_tra_mbh_pat2 t2_trufi_cor