scholarly journals Detrimental effects of BOLD signal in arterial spin labeling fMRI at high field strength

2006 ◽  
Vol 56 (3) ◽  
pp. 546-552 ◽  
Author(s):  
Hanzhang Lu ◽  
Manus J. Donahue ◽  
Peter C.M. van Zijl
Keyword(s):  
Field Strength ◽  
Arterial Spin Labeling ◽  
High Field ◽  
Spin Labeling ◽  
Bold Signal ◽  
High Field Strength

Combining SPARSE fMRI Designs with SENSE at High Field Strength

2006 ◽  
Vol 178 (01) ◽  
Author(s):  
L Scheef ◽  
M Daamen ◽  
U Fehse ◽  
MW Landsberg ◽  
DO Granath ◽  
...  
Keyword(s):  
Field Strength ◽  
High Field ◽  
High Field Strength

Comparison of High-Field-Strength Versus Low-Field-Strength MRI of the Shoulder

2003 ◽  
Vol 181 (5) ◽  
pp. 1211-1215 ◽  
Author(s):  
Thomas Magee ◽  
Marc Shapiro ◽  
David Williams
Keyword(s):  
Field Strength ◽  
High Field ◽  
High Field Strength ◽  
Low Field

scholarly journals Geology and Geochemistry of Iroko-Granites Southwestern Nigeria: implication on provenance

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Olusola A. OlaOlorun ◽  
Segun Akinyemi ◽  
Ayomide J. Oluwaleye ◽  
Joseph Agbemuko
Keyword(s):  
Trace Elements ◽  
Field Strength ◽  
Quartz Vein ◽  
High Field ◽  
High Field Strength ◽  
Southwestern Nigeria ◽  
Sparse Vegetation ◽  
Pan African ◽  
Distinctive Type ◽  
Vegetation Structures

The geology, geochemistry of Iroko-granites have been studied and reported in this paper. The study area has been described as of Archaean –Early Proterozoic terrain underlain by migmatite-gneiss-quartzite complex with supracustal rocks. Large  number  of  granites which outcrops in Iroko-Ekiti represent a typical occurrence  of  granitoids sporadically  distributed  in  the  basement and  are known to  belong  to  the  Older Granite  suites,  which  are   attributable  to  the  Pan-African  Orogeny(750± 150Ma). The rocks occur, mostly as flat and low lying within sparse vegetation. Structures common on and around the outcrops include quartz vein, veinlets, pegmatite dykes which trend North-south, discrete exfoliated surfaces and xenoliths of older rocks. This study reveals that the granites belong to calc-alkalic suites, demonstrate metaluminous nature, and exhibit characteristics of I-type granites. The granite is a distinctive type in that it is relatively highly potassic, has high FeO/(FeO + MgO) ratio, and high average Zr (299.75ppm) concentration with other high field strength elements. The trace elements study implicates pronounced fractional crystallization during evolution of the granites and thus petrogenetically discriminates as Syn-collision provenance.

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