Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
COMMUTATOR FILTER - A NOVEL TECHNIQUE FOR THE IDENTIFICATION OF STRUCTURES PRODUCING SIGNIFICANT SUSCEPTIBILITY INHOMOGENEITIES AND ITS APPLICATION TO FUNCTIONAL MRI
Autore:
LAI S; REICHENBACH JR; HAACKE EM;
Indirizzi:
STANFORD UNIV,SCH MED,DEPT RADIOL,LUCAS MRS IMAGING CTR,RADIOL SCI LAB STANFORD CA 94305 UNIV WASHINGTON,SCH MED,MALLINCKRODT INST RADIOL ST LOUIS MO 00000 CASE WESTERN RESERVE UNIV,DEPT PHYS CLEVELAND OH 44106
Titolo Testata:
Magnetic resonance in medicine
fascicolo: 5, volume: 36, anno: 1996,
pagine: 781 - 787
SICI:
0740-3194(1996)36:5<781:CF-ANT>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR CORTEX; IN-VIVO; SIGNAL; RESOLUTION; CONTRAST; BRAIN; DEOXYHEMOGLOBIN; BLOOD; IMAGE; FLOW;
Keywords:
SUSCEPTIBILITY EFFECT; DEOXYHEMOGLOBIN; MR VENOGRAM; FUNCTIONAL MRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
S. Lai et al., "COMMUTATOR FILTER - A NOVEL TECHNIQUE FOR THE IDENTIFICATION OF STRUCTURES PRODUCING SIGNIFICANT SUSCEPTIBILITY INHOMOGENEITIES AND ITS APPLICATION TO FUNCTIONAL MRI", Magnetic resonance in medicine, 36(5), 1996, pp. 781-787

Abstract

A robust postprocessing method to detect regions of magnetic field change is presented. High resolution gradient echo data is acquired to create a complex baseline image. From this image, two low resolution images are obtained by applying a low pass filter on the magnitude imageand the complex image, respectively. Subtraction of the magnitude of the filtered complex image from the filtered magnitude image gives a new image called a commutator image in which regions of susceptibility-induced field variation are greatly enhanced, Results on phantoms and applications to visualize paramagnetic venous blood vessels in the human brain are presented. The use of this technique on a 3D gradient echo data set represents a new approach to obtain an MR venogram. The application of this method to blood oxygenation level dependent (BOLD) functional brain MR imaging is demonstrated and the important role susceptibility plays in this model is verified.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 05:43:41