title: [Study on cine view of relative enhancement ratio map in O2-enhanced MRI].
abstract: Magnetic resonance imaging (MRI) enables the evaluation of organ structure and function. Oxygen-enhanced MRI (O2-enhanced MRI) is a method for evaluating the pulmonary ventilation function using oxygen as a contrast agent. We created the Cine View of Relative Enhancement Ratio Map (Cine RER map) in O2-enhanced MRI to easily observe the contrast effect for clinical use. Relative enhancement ratio (RER) was determined as the pixel values of the Cine RER map. Moreover, six healthy volunteers underwent O2-enhanced MRI to determine the appropriate scale width of the Cine RER map. We calculated each RER and set 0 to 1.27 as the scale width of the Cine RER map based on the results. The Cine RER map made it possible to observe the contrast effect over time and thus is a convenient tool for evaluating the pulmonary ventilation function in O2-enhanced MRI.
authors.affiliation: Department of Radiological Technology, Tokyo University Hospital.
authors.forename: Keita
authors.initials: K
authors.lastname: Fujii
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Shouhei
authors.initials: S
authors.lastname: Hanaoka
authors.forename: Kouichi
authors.initials: K
authors.lastname: Motoyoshi
authors.forename: Masami
authors.initials: M
authors.lastname: Goto
authors.forename: Shiori
authors.initials: S
authors.lastname: Amemiya
authors.forename: Kenji
authors.initials: K
authors.lastname: Ino
authors.forename: Masaaki
authors.initials: M
authors.lastname: Akahane
authors.forename: Keiichi
authors.initials: K
authors.lastname: Yano
authors.forename: Kuni
authors.initials: K
authors.lastname: Ohtomo
mesh_terms: D000328:Adult; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D010100:Oxygen; D019047:Phantoms, Imaging; D055815:Young Adult
chemical_list: D010100:Oxygen