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A fast method has been established for the precise measurement and quantification of the dynamics of hyperpolarized (HP) xenon‐129 (129Xe) in the mouse brain. The key technique is based on repeatedly applying radio frequency (RF) pulses and measuring the decrease of HP 129Xe magnetization after the brain Xe concentration has reached a steady state due to continuous HP 129Xe ventilation. The signal...
The purpose of this study was to assess whether there was an agreement between quantitative cerebral blood flow (CBF) and arterial cerebral blood volume (CBVA) measurements by [15O]H2O positron emission tomography (PET) and model‐free QUASAR MRI. Twelve healthy subjects were scanned within a week in separate MRI and PET imaging sessions, after which quantitative and qualitative agreement between both...
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