title: [Position dependent influence that sensitivity correction processing gives the signal-to-noise ratio measurement in parallel imaging].
abstract: We studied the position dependent influence that sensitivity correction processing gave the signal-to-noise ratio (SNR) measurement of parallel imaging (PI). Sensitivity correction processing that referred to the sensitivity distribution of the body coil improved regional uniformity more than the sensitivity uniformity correction filter with a fixed correction factor. In addition, the position dependent influence to give the SNR measurement in PI was different from the sensitivity correction processing. Therefore, if we divide SNR of the sensitivity correction processing image by SNR of the original image in each pixel and calculate SNR ratio, we can show the position dependent influence that sensitivity correction processing gives the SNR measurement in PI. It is with an index of the sensitivity correction processing precision.
authors.affiliation: Department of Central Radiological Technology, Kawasaki Medical School Hospital.
authors.forename: Koichi
authors.initials: K
authors.lastname: Murakami
authors.forename: Koji
authors.initials: K
authors.lastname: Yoshida
authors.forename: Shinichi
authors.initials: S
authors.lastname: Yanagimoto
mesh_terms: D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D019047:Phantoms, Imaging; D012680:Sensitivity and Specificity; D059629:Signal-To-Noise Ratio