Effect of motion outside the field of view on functional MR

F. Zerrin Yetkin, Victor M. Haughton, Robert W. Cox, James Hyde, Rasmus M. Birn, Eric C. Wong, Robert Prost

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

PURPOSE: To evaluate the effect of objects moving outside the field of view on functional MR imaging. METHODS: Echo-planar image sequences were acquired in the sagittal plane of a stationary phantom or of the head of a volunteer subject while a second phantom was moved periodically outside the field of view. The signal intensity changes in each pixel within the field of view were measured. RESULTS: Movement of the phantom outside the field of view produced signal intensity changes in the field of view that equaled or exceeded typical functional activation without the latency that characterizes activation. The greatest changes occurred at the bottom and top edges in the phantom and at the interfaces in the head. CONCLUSION: If temporally correlated with the performance of a task, movement of objects or tissues outside the field of view may produce artifactual changes in signal intensity. The artifactual signal intensity changes were characterized by their location, greater magnitude, and more rapid rise to maximum than seen with typical "activation.".

Original languageEnglish (US)
Pages (from-to)1005-1009
Number of pages5
JournalAmerican Journal of Neuroradiology
Volume17
Issue number6
StatePublished - 1996

Fingerprint

Head
Task Performance and Analysis
Volunteers

Keywords

  • Functional
  • Magnetic resonance
  • Phantoms

ASJC Scopus subject areas

  • Clinical Neurology
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Yetkin, F. Z., Haughton, V. M., Cox, R. W., Hyde, J., Birn, R. M., Wong, E. C., & Prost, R. (1996). Effect of motion outside the field of view on functional MR. American Journal of Neuroradiology, 17(6), 1005-1009.

Effect of motion outside the field of view on functional MR. / Yetkin, F. Zerrin; Haughton, Victor M.; Cox, Robert W.; Hyde, James; Birn, Rasmus M.; Wong, Eric C.; Prost, Robert.

In: American Journal of Neuroradiology, Vol. 17, No. 6, 1996, p. 1005-1009.

Research output: Contribution to journalArticle

Yetkin, FZ, Haughton, VM, Cox, RW, Hyde, J, Birn, RM, Wong, EC & Prost, R 1996, 'Effect of motion outside the field of view on functional MR', American Journal of Neuroradiology, vol. 17, no. 6, pp. 1005-1009.
Yetkin FZ, Haughton VM, Cox RW, Hyde J, Birn RM, Wong EC et al. Effect of motion outside the field of view on functional MR. American Journal of Neuroradiology. 1996;17(6):1005-1009.
Yetkin, F. Zerrin ; Haughton, Victor M. ; Cox, Robert W. ; Hyde, James ; Birn, Rasmus M. ; Wong, Eric C. ; Prost, Robert. / Effect of motion outside the field of view on functional MR. In: American Journal of Neuroradiology. 1996 ; Vol. 17, No. 6. pp. 1005-1009.
@article{2fa3fc7561124d85a60589ccdbeae0b2,
title = "Effect of motion outside the field of view on functional MR",
abstract = "PURPOSE: To evaluate the effect of objects moving outside the field of view on functional MR imaging. METHODS: Echo-planar image sequences were acquired in the sagittal plane of a stationary phantom or of the head of a volunteer subject while a second phantom was moved periodically outside the field of view. The signal intensity changes in each pixel within the field of view were measured. RESULTS: Movement of the phantom outside the field of view produced signal intensity changes in the field of view that equaled or exceeded typical functional activation without the latency that characterizes activation. The greatest changes occurred at the bottom and top edges in the phantom and at the interfaces in the head. CONCLUSION: If temporally correlated with the performance of a task, movement of objects or tissues outside the field of view may produce artifactual changes in signal intensity. The artifactual signal intensity changes were characterized by their location, greater magnitude, and more rapid rise to maximum than seen with typical {"}activation.{"}.",
keywords = "Functional, Magnetic resonance, Phantoms",
author = "Yetkin, {F. Zerrin} and Haughton, {Victor M.} and Cox, {Robert W.} and James Hyde and Birn, {Rasmus M.} and Wong, {Eric C.} and Robert Prost",
year = "1996",
language = "English (US)",
volume = "17",
pages = "1005--1009",
journal = "American Journal of Neuroradiology",
issn = "0195-6108",
publisher = "American Society of Neuroradiology",
number = "6",

}

TY - JOUR

T1 - Effect of motion outside the field of view on functional MR

AU - Yetkin, F. Zerrin

AU - Haughton, Victor M.

AU - Cox, Robert W.

AU - Hyde, James

AU - Birn, Rasmus M.

AU - Wong, Eric C.

AU - Prost, Robert

PY - 1996

Y1 - 1996

N2 - PURPOSE: To evaluate the effect of objects moving outside the field of view on functional MR imaging. METHODS: Echo-planar image sequences were acquired in the sagittal plane of a stationary phantom or of the head of a volunteer subject while a second phantom was moved periodically outside the field of view. The signal intensity changes in each pixel within the field of view were measured. RESULTS: Movement of the phantom outside the field of view produced signal intensity changes in the field of view that equaled or exceeded typical functional activation without the latency that characterizes activation. The greatest changes occurred at the bottom and top edges in the phantom and at the interfaces in the head. CONCLUSION: If temporally correlated with the performance of a task, movement of objects or tissues outside the field of view may produce artifactual changes in signal intensity. The artifactual signal intensity changes were characterized by their location, greater magnitude, and more rapid rise to maximum than seen with typical "activation.".

AB - PURPOSE: To evaluate the effect of objects moving outside the field of view on functional MR imaging. METHODS: Echo-planar image sequences were acquired in the sagittal plane of a stationary phantom or of the head of a volunteer subject while a second phantom was moved periodically outside the field of view. The signal intensity changes in each pixel within the field of view were measured. RESULTS: Movement of the phantom outside the field of view produced signal intensity changes in the field of view that equaled or exceeded typical functional activation without the latency that characterizes activation. The greatest changes occurred at the bottom and top edges in the phantom and at the interfaces in the head. CONCLUSION: If temporally correlated with the performance of a task, movement of objects or tissues outside the field of view may produce artifactual changes in signal intensity. The artifactual signal intensity changes were characterized by their location, greater magnitude, and more rapid rise to maximum than seen with typical "activation.".

KW - Functional

KW - Magnetic resonance

KW - Phantoms

UR - http://www.scopus.com/inward/record.url?scp=0030000224&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030000224&partnerID=8YFLogxK

M3 - Article

C2 - 8791907

AN - SCOPUS:0030000224

VL - 17

SP - 1005

EP - 1009

JO - American Journal of Neuroradiology

JF - American Journal of Neuroradiology

SN - 0195-6108

IS - 6

ER -