Inversion recovery TrueFISP: Quantification ofT1,T2, and spin density
نویسندگان
چکیده
منابع مشابه
Inversion recovery TrueFISP: quantification of T(1), T(2), and spin density.
A novel procedure is proposed to extract T(1), T(2), and relative spin density from the signal time course sampled with a series of TrueFISP images after spin inversion. Generally, the recovery of the magnetization during continuous TrueFISP imaging can be described in good approximation by a three parameter monoexponential function S(t) = S(stst)(1-INV exp(-t/T(*) (1)). This apparent relaxatio...
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A major drawback of 3D time-of-flight (TOF) sequences is progressive saturation of inflowing spins along the slab direction, and a sufficient long TR or shaped excitation pulses are required to compensate for this. Here we present a new TOF technique based on a combination of selective inversion and 3D acquisition with TrueFISP. The stationary tissue is partially suppressed by the inversion pul...
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Introduction: A promising approach for the simultaneous quantification of proton density, T1 and T2 is the IR TrueFISP sequence proposed by Schmitt et al. [1]. This sequence consists of an inversion pulse followed by a series of TrueFISP acquisitions, observing a quasirelaxation towards the steady-state. However, this sequence requires a delay between individual segments in order to allow the m...
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Introduction: Inversion recovery (IR) TrueFISP imaging sequences have recently been used to acquire dynamic contrast enhanced (DCE) MRI data due to their short acquisition time, sensitivity to changes in tissue longitudinal relaxation times and superior signal-to-noise characteristics [1]. Use of an inversion recovery preparation offers the ability to quantify relaxation time changes at each dy...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2004
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.20058