An MRI phantom material for quantitative relaxometry

K. A. Kraft, P. P. Fatouros, Geoffrey D Clarke, P. R S Kishore

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Most phantom media in current use exhibit T1 relaxation times that are significantly dependent on both temperature and operating frequency. This can introduce undesirable variability into relaxation measurements due to temperature fluctuations, and complicates direct comparison of imagers operating at different magnetic field strengths. Our investigations of a nickel-doped agarose gel system have demonstrated near independence of the proton relaxation rates to a wide range of temperatures and frequencies. We therefore propose the adoption of Ni2+ as a relaxation modifier for phantom materials used as relaxometry standards.

Original languageEnglish (US)
Pages (from-to)555-562
Number of pages8
JournalMagnetic Resonance in Medicine
Volume5
Issue number6
StatePublished - 1987
Externally publishedYes

Fingerprint

Temperature
Magnetic Fields
Nickel
Sepharose
Protons
Gels

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Kraft, K. A., Fatouros, P. P., Clarke, G. D., & Kishore, P. R. S. (1987). An MRI phantom material for quantitative relaxometry. Magnetic Resonance in Medicine, 5(6), 555-562.

An MRI phantom material for quantitative relaxometry. / Kraft, K. A.; Fatouros, P. P.; Clarke, Geoffrey D; Kishore, P. R S.

In: Magnetic Resonance in Medicine, Vol. 5, No. 6, 1987, p. 555-562.

Research output: Contribution to journalArticle

Kraft, KA, Fatouros, PP, Clarke, GD & Kishore, PRS 1987, 'An MRI phantom material for quantitative relaxometry', Magnetic Resonance in Medicine, vol. 5, no. 6, pp. 555-562.
Kraft KA, Fatouros PP, Clarke GD, Kishore PRS. An MRI phantom material for quantitative relaxometry. Magnetic Resonance in Medicine. 1987;5(6):555-562.
Kraft, K. A. ; Fatouros, P. P. ; Clarke, Geoffrey D ; Kishore, P. R S. / An MRI phantom material for quantitative relaxometry. In: Magnetic Resonance in Medicine. 1987 ; Vol. 5, No. 6. pp. 555-562.
@article{d4e6d13173d64b07812a545b1993ca1c,
title = "An MRI phantom material for quantitative relaxometry",
abstract = "Most phantom media in current use exhibit T1 relaxation times that are significantly dependent on both temperature and operating frequency. This can introduce undesirable variability into relaxation measurements due to temperature fluctuations, and complicates direct comparison of imagers operating at different magnetic field strengths. Our investigations of a nickel-doped agarose gel system have demonstrated near independence of the proton relaxation rates to a wide range of temperatures and frequencies. We therefore propose the adoption of Ni2+ as a relaxation modifier for phantom materials used as relaxometry standards.",
author = "Kraft, {K. A.} and Fatouros, {P. P.} and Clarke, {Geoffrey D} and Kishore, {P. R S}",
year = "1987",
language = "English (US)",
volume = "5",
pages = "555--562",
journal = "Magnetic Resonance in Medicine",
issn = "0740-3194",
publisher = "John Wiley and Sons Inc.",
number = "6",

}

TY - JOUR

T1 - An MRI phantom material for quantitative relaxometry

AU - Kraft, K. A.

AU - Fatouros, P. P.

AU - Clarke, Geoffrey D

AU - Kishore, P. R S

PY - 1987

Y1 - 1987

N2 - Most phantom media in current use exhibit T1 relaxation times that are significantly dependent on both temperature and operating frequency. This can introduce undesirable variability into relaxation measurements due to temperature fluctuations, and complicates direct comparison of imagers operating at different magnetic field strengths. Our investigations of a nickel-doped agarose gel system have demonstrated near independence of the proton relaxation rates to a wide range of temperatures and frequencies. We therefore propose the adoption of Ni2+ as a relaxation modifier for phantom materials used as relaxometry standards.

AB - Most phantom media in current use exhibit T1 relaxation times that are significantly dependent on both temperature and operating frequency. This can introduce undesirable variability into relaxation measurements due to temperature fluctuations, and complicates direct comparison of imagers operating at different magnetic field strengths. Our investigations of a nickel-doped agarose gel system have demonstrated near independence of the proton relaxation rates to a wide range of temperatures and frequencies. We therefore propose the adoption of Ni2+ as a relaxation modifier for phantom materials used as relaxometry standards.

UR - http://www.scopus.com/inward/record.url?scp=0023624850&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023624850&partnerID=8YFLogxK

M3 - Article

C2 - 3437816

AN - SCOPUS:0023624850

VL - 5

SP - 555

EP - 562

JO - Magnetic Resonance in Medicine

JF - Magnetic Resonance in Medicine

SN - 0740-3194

IS - 6

ER -