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Functional imaging of cerebral cortex activation with a 1.5-T MR imaging system

Journal Article:

Abstract

Most of recent MR imagings of cerebral cortex activation have been performed by using high field magnet above 2-T or echo-planar imaging technique. We report our experience on imaging of cerebral cortex activation with a widely available standard 1.5-T MR. Series of gradient-echo images (TR/TE/flip angle: 80/60/40 .deg. 64 x 128 matrix) were acquired alternatively during the periods of rest and task in five normal volunteers. Finger movement (n = 10;5 right, 5 left) and flashing photic stimulation (n 1) were used as a motor task and a visual task to activate the motor cortex and visual cortex, respectively. Activation images were obtained by subtracting sum of rest images from that of task images. Changes of signal intensity were analyzed over the periods of rest and task. Activation images were obtained in all cases. Changes of signal intensity between rest and task periods were 6.5-14.6%(mean, 10.5%) in the motor cortex and 4.2% in the visual cortex. Functional imaging of cerebral cortex activation could be performed with a widely available 1.5-T MR. Widespread applications of this technique to basic and clinical neuroscience are expected.
Authors:
Kim, Jae Hyoung; Chang, Sun Ae; Ha, Choong Kun; Kim, Eun Sang; Kim, Hyung Jin; Chung, Sung Hoon [1] 
  1. Gyeongsang National University, College of Medicine, Jeongju (Korea, Republic of)
Publication Date:
Jul 15, 1995
Product Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Korean Radiological Society; Journal Volume: 33; Journal Issue: 1; Other Information: 18 refs, 4 figs
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BLOOD FLOW; BRAIN; NMR IMAGING; SIGNALS; VASCULAR DISEASES
OSTI ID:
21071631
Country of Origin:
Korea, Republic of
Language:
Korean
Other Identifying Numbers:
Journal ID: ISSN 0301-2867; DBSHAH; TRN: KR0802226084998
Submitting Site:
KRN
Size:
page(s) 1-6
Announcement Date:
Sep 30, 2008

Journal Article:

Citation Formats

Kim, Jae Hyoung, Chang, Sun Ae, Ha, Choong Kun, Kim, Eun Sang, Kim, Hyung Jin, and Chung, Sung Hoon. Functional imaging of cerebral cortex activation with a 1.5-T MR imaging system. Korea, Republic of: N. p., 1995. Web.
Kim, Jae Hyoung, Chang, Sun Ae, Ha, Choong Kun, Kim, Eun Sang, Kim, Hyung Jin, & Chung, Sung Hoon. Functional imaging of cerebral cortex activation with a 1.5-T MR imaging system. Korea, Republic of.
Kim, Jae Hyoung, Chang, Sun Ae, Ha, Choong Kun, Kim, Eun Sang, Kim, Hyung Jin, and Chung, Sung Hoon. 1995. "Functional imaging of cerebral cortex activation with a 1.5-T MR imaging system." Korea, Republic of.
@misc{etde_21071631,
title = {Functional imaging of cerebral cortex activation with a 1.5-T MR imaging system}
author = {Kim, Jae Hyoung, Chang, Sun Ae, Ha, Choong Kun, Kim, Eun Sang, Kim, Hyung Jin, and Chung, Sung Hoon}
abstractNote = {Most of recent MR imagings of cerebral cortex activation have been performed by using high field magnet above 2-T or echo-planar imaging technique. We report our experience on imaging of cerebral cortex activation with a widely available standard 1.5-T MR. Series of gradient-echo images (TR/TE/flip angle: 80/60/40 .deg. 64 x 128 matrix) were acquired alternatively during the periods of rest and task in five normal volunteers. Finger movement (n = 10;5 right, 5 left) and flashing photic stimulation (n 1) were used as a motor task and a visual task to activate the motor cortex and visual cortex, respectively. Activation images were obtained by subtracting sum of rest images from that of task images. Changes of signal intensity were analyzed over the periods of rest and task. Activation images were obtained in all cases. Changes of signal intensity between rest and task periods were 6.5-14.6%(mean, 10.5%) in the motor cortex and 4.2% in the visual cortex. Functional imaging of cerebral cortex activation could be performed with a widely available 1.5-T MR. Widespread applications of this technique to basic and clinical neuroscience are expected.}
journal = {Journal of the Korean Radiological Society}
issue = {1}
volume = {33}
place = {Korea, Republic of}
year = {1995}
month = {Jul}
}