Disappearing iliac vessels: An MR phase cancellation phenomenon

J. Mayo, E. R. McVeigh, N. Hoffman, P. Y. Poon, R. M. Henkelman

Research output: Contribution to journalArticle

Abstract

Magnetic resonance images often fail to distinguish the iliac vessels on one side. Phantom studies and theoretical analysis demonstrated that this phenomenon arises from a loss of the flow void effect. At a certain angle, the additional phase accumulation that results from motion in the section-selection direction exactly cancels the additional phase accumulation from motion in the frequency-encoding direction. Thus, vessels that cut through the imaging plane near this critical angle have substantial signal intensity. This artifact can be eliminated by alternating the direction of the section-selection gradient on sequential phase encodings.

Original languageEnglish (US)
Pages (from-to)555-557
Number of pages3
JournalRadiology
Volume164
Issue number2
StatePublished - 1987
Externally publishedYes

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Artifacts
Theoretical Models
Magnetic Resonance Spectroscopy
Direction compound

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Mayo, J., McVeigh, E. R., Hoffman, N., Poon, P. Y., & Henkelman, R. M. (1987). Disappearing iliac vessels: An MR phase cancellation phenomenon. Radiology, 164(2), 555-557.

Disappearing iliac vessels : An MR phase cancellation phenomenon. / Mayo, J.; McVeigh, E. R.; Hoffman, N.; Poon, P. Y.; Henkelman, R. M.

In: Radiology, Vol. 164, No. 2, 1987, p. 555-557.

Research output: Contribution to journalArticle

Mayo, J, McVeigh, ER, Hoffman, N, Poon, PY & Henkelman, RM 1987, 'Disappearing iliac vessels: An MR phase cancellation phenomenon', Radiology, vol. 164, no. 2, pp. 555-557.
Mayo J, McVeigh ER, Hoffman N, Poon PY, Henkelman RM. Disappearing iliac vessels: An MR phase cancellation phenomenon. Radiology. 1987;164(2):555-557.
Mayo, J. ; McVeigh, E. R. ; Hoffman, N. ; Poon, P. Y. ; Henkelman, R. M. / Disappearing iliac vessels : An MR phase cancellation phenomenon. In: Radiology. 1987 ; Vol. 164, No. 2. pp. 555-557.
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