Non‐invasive evaluation of blood oxygen saturation and hematocrit from T1 and T2 relaxation times: In‐vitro validation in fetal blood

Purpose We propose an analytical method for calculating blood hematocrit (Hct) and oxygen saturation (sO2) from measurements of its T1 and T2 relaxation times. Theory Through algebraic substitution, established two‐compartment relationships describing R1=T1−1 and R2=T2−1 as a function of hematocrit...

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Veröffentlicht in:	Magnetic resonance in medicine 2017-12, Vol.78 (6), p.2352-2359
Hauptverfasser:	Portnoy, Sharon, Seed, Mike, Sled, John G., Macgowan, Christopher K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological effects Blood Blood gas analysis Computer simulation Cord blood Estimates Feasibility studies fetal blood Fetuses Gas analysis Hematocrit longitudinal relaxation Magnetic resonance Mathematical analysis Noise measurement Oximetry Oxygen Oxygen content Oxygen saturation Saturation Sulfur dioxide transverse relaxation Uncertainty
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