Phenylketonuria (PKU) is an autosomal recessive disorder that results in the accumulation of phenylalanine in the blood and soft tissues. Elevated levels of phenylalanine have neurotoxic effects on the developing brain, resulting in mental retardation. Early diagnosis and treatment limits the neurol
Tuning and matching networks for MR imaging and spectroscopy
โ Scribed by Ingmar Viohl; Grant T. Gullberg
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 313 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1053-1807
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โฆ Synopsis
Abstract
The authors briefly discuss four tuning and matching networks and their application range in magnetic resonance (MR) imaging and MR spectroscopy. Analytic expressions for the network elements needed to tune and match an MR imaging or spectroscopy probe for a given coil impedance are given, and the connection to the โstandardโ twoโelement capacitive matching networks is shown. The power loss factor and the phase shift between the input current and the load current are explicitly calculated for each of the four networks. The merits of the different matching networks are then discussed in the context of a generalโpurpose license plate coil commonly used in MR imaging.
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