Inhaled oxygen: a brain MR contrast agent?
Oxygen inhalation led to subtle but readily detectable changes on T2*-weighted images with a conventional MR imager at 1.5 T. We attribute the increase in local signal intensity to changes in blood oxygenation, in particular to a net conversion of deoxyhemoglobin to oxyhemoglobin.
Berthezène
Y
Y
Hôpital Neurologique et Neurochirurgical, Lyon, France.
Tournut
P
P
Turjman
F
F
N'Gbesso
R
R
Falise
B
B
Froment
J C
JC
D000280:Administration, Inhalation; D001921:Brain / Q000033:anatomy & histology*; D003287:Contrast Media / Q000008:administration & dosage*; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D007089:Image Enhancement; D018810:Magnetic Resonance Angiography / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010100:Oxygen / Q000008:administration & dosage / Q000097:blood; D010108:Oxyhemoglobins / Q000378:metabolism; D012016:Reference Values
D003287:Contrast Media; D006454:Hemoglobins; D010108:Oxyhemoglobins; C100003:deoxyhemoglobin; D010100:Oxygen