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PubMed · 7707913

Phased array coils for upper extremity MRA.

J W Monroe·P Schmalbrock·D G Spigos
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Abstract

A phased array coil was constructed for imaging the upper extremity vasculature for patients undergoing dialysis treatment. The phased array coil exhibits improved signal-to-noise ratio (SNR) over the body coil and allows imaging of the entire upper extremity. SNR as a function of depth was measured on a homogeneous phantom with the arm coil and compared with the body coil. Near the coil there is an improvement of a factor of 7 and at a depth of approximately 6-7 cm, there is an improvement of factor 2. In vivo SNR measurements resulted in similar improvements. Images of the upper extremity vasculature of healthy volunteers were generated using 2D-time-of-flight (2DTOF) angiography. Blood flow velocity was assessed in a CINE-phase contrast study.

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ArmArtifactsBlood Flow VelocityContrast MediaEquipment DesignHumansImage EnhancementMagnetic Resonance AngiographyModels, StructuralMotion PicturesMuscle, SkeletalRegional Blood FlowRenal DialysisSignal Processing, Computer-AssistedSurface PropertiesComparative StudyJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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J W Monroe, P Schmalbrock, D G Spigos. 1995. Phased array coils for upper extremity MRA.. https://doi.org/10.1002/mrm.1910330212

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