gkm vessel wall using swi susceptibility mapping swim clinical applications of swi blood from calcifications swan magnitude image sw filtered-phase swi phase maps susceptibilityweighted imaging swi indications for orbital dopler superior ophthalmic vein posterior ciliary arteries central retinal artery ophthalmic artery vascular anatomy of orbit ultrasound anatomy of orbit diabetic retinopathy orbital doppler in phase chess fat-sat suppression fat suppression techniques flair stir mprage steady state (ss) sequences spoiled/incoherent gre flip angle haste fast (turbo) spin-echo echo planar imaging inversion recovery sequence gre gradient echo sequence spin echo sequence part 2 pulse sequences clinical application t1 hypointense t1 hyperintense k space proton density pd t2 t1 mri basic principle
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