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Titolo:
Intimate combination of low- and high-resolution image data: I. Real-spacePET and (H2O)-H-1 MRI, PETAMRI
Autore:
Sammi, MK; Felder, CA; Fowler, JS; Lee, JH; Levy, AV; Li, X; Logan, T; Palyka, I; Rooney, WD; Volkow, ND; Wang, GT; Springer, CS;
Indirizzi:
Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 ab, Dept Chem, Upton, NY 11973 USA SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA SUNY Stony Brook Stony Brook NY USA 11794 Chem, Stony Brook, NY 11794 USA Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 Lab, Dept Med, Upton, NY 11973 USA
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 2, volume: 42, anno: 1999,
pagine: 345 - 360
SICI:
0740-3194(199908)42:2<345:ICOLAH>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-RESONANCE IMAGES; BRAIN GLUCOSE-METABOLISM; DOPAMINE D-2 RECEPTORS; WHITE-MATTER; GRAY-MATTER; SEGMENTATION; DISPLAY; REGISTRATION; RELAXATION; ALGORITHM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Springer, CS Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 , Upton, NY 11973 USA
Citazione:
M.K. Sammi et al., "Intimate combination of low- and high-resolution image data: I. Real-spacePET and (H2O)-H-1 MRI, PETAMRI", MAGN RES M, 42(2), 1999, pp. 345-360

Abstract

Two different types of (co-registered) images of the same slice of tissue will generally have different spatial resolutions, The judicious pixel-by-pixel combination of their data can be accomplished to yield a single image exhibiting properties of both. Here, axial (18)FDG PET and (H2O)-H-1 MR images of the human brain are used as the low- and high-resolution members of the pair. A color scale is necessary in order to provide for separate intensity parameters from the two image types. However, not all color scales canaccommodate this separability. The HSV color model allows one to choose a color scale in which the intensity of the low-resolution image type is coded as hue, while that of the high-resolution type is coded as value, a reasonably independent parameter. Furthermore, the high-resolution image must have high contrast and be quantitative in the same sense as the low-resolution image almost always is. Here, relaxographic MR images (naturally segmented quantitative (H2O)-H-1 spin-density components) are used. Their essentially complete contrast serves to effect an apparent editing function when encoded as the value of the color scale. Thus, the combination of 1(8F)DG PET images with gray-matter (GM) relaxographic (H2O)-H-1 images produces visually "GM-edited" (18)FDG PETAMR (positron emission tomography and magnetic resonance) images, These exhibit the high sensitivity to tracer amounts characteristic of PET along with the high spatial resolution of (H2O)-H-1 MRI, At the same time, however, they retain the complete quantitative measures ofeach of their basis images. Magn Reson Med 42:345-360, 1999. Published 1999 Wiley-Liss, Inc.dagger

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 12:33:42