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Journal of Cardiovascular Magnetic Resonance

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Open Access 01-12-2016 | Workshop presentation

Venous oxygen saturation estimation from multiple T2 maps with varying inter-echo spacing

Authors: Juliet Varghese, Rizwan Ahmad, Ning Jin, Lee C Potter, Orlando P Simonetti

Published in: Journal of Cardiovascular Magnetic Resonance | Special Issue 1/2016

Excerpt

Dependence of blood T2 on O2 saturation has led to non-invasive MRI-based techniques for determining venous O2 saturation (SvO₂) [1-3]. However, applying a general calibration factor derived from in vitro experiments can lead to inaccurate and largely varying SvO₂ estimates in the target population. We aim to show that based on the Luz-Meiboom relation 1/T2 = 1/T2o + Hct(1-Hct) τ_ex[(1-%SO₂/100)αω₀]²(1-2*τ_ex/τ₁₈₀ tanh(τ₁₈₀/2*τ_ex))[4], individual SvO₂ can be determined from multiple T2 maps, each acquired at a specific inter-echo spacing (τ₁₈₀). …

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Title: Venous oxygen saturation estimation from multiple T2 maps with varying inter-echo spacing
Authors: Juliet Varghese
Rizwan Ahmad
Ning Jin
Lee C Potter
Orlando P Simonetti
Publication date: 01-12-2016
Publisher: BioMed Central
Published in: Journal of Cardiovascular Magnetic Resonance / Issue Special Issue 1/2016
Electronic ISSN: 1532-429X
DOI: https://doi.org/10.1186/1532-429X-18-S1-W29

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Venous oxygen saturation estimation from multiple T2 maps with varying inter-echo spacing

Excerpt

Keynote webinar | Spotlight on medication adherence

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