In vivo correlation between blood T2* and oxygen saturation.
The in vivo relationship between blood T2* and oxygen saturation was investigated. A wide range of blood oxygen saturation levels was created in pigs by altering the ventilation rate. Blood T2* was measured in vivo in the abdominal aorta and the inferior vena cava, corresponding to each oxygen saturation level. Our results indicate that it is possible to measure blood T2* in vivo reliably with an MR technique we previously proposed. Blood T2* correlates closely with oxygen saturation levels over a wide range, and the relationship between blood T2* measured in vivo and oxygen saturation can be approximated by a linear function.
Li
D
D
Department of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA. debiao@mirlink.wustl.edu
Waight
D J
DJ
Wang
Y
Y
D000818:Animals; D001012:Aorta, Abdominal / Q000033:anatomy & histology / Q000502:physiology*; D001783:Blood Flow Velocity; D006400:Hematocrit; D006454:Hemoglobins / Q000378:metabolism*; D008279:Magnetic Resonance Imaging; D010100:Oxygen / Q000097:blood*; D015203:Reproducibility of Results; D013552:Swine; D014682:Vena Cava, Inferior / Q000033:anatomy & histology / Q000502:physiology*
D006454:Hemoglobins; D010100:Oxygen