A new perfluorocarbon for use in fluorine-19 magnetic resonance imaging and spectroscopy

C. H. Sotak, Paul Hees, H. N. Huang, M. H. Hung, C. G. Krespan, S. Raynolds

Research output: Contribution to journalArticle

Abstract

A new perfluorocarbon, PTBD (perfluoro-2,2,2',2'-tetramethyl-4,4'-bis(1,3-dioxolane)), is described for use in 19F MR imaging and spectroscopy. Two-thirds of the molecular fluorine in PTBD resonates at a single frequency and can be imaged without the use of frequency-selective spin-echo (SE) MRI pulse sequences to suppress chemical shift artifacts. The absence of strong homonuclear spin-spin coupling to the imagable -CF3 groups in PTBD minimizes signal attenuation in 19F SE MRI due to J-modulation effects. For equimolar concentrations of perfluorocarbon, PTBD gives an approximately 17% increase in sensitivity, relative to literature results for perfluorinated amines, at short values of TE (~10 ms) in 19F SE MRI. These attributes allow 19F MRI of PTBD to be performed on standard clinical imaging instrumentation (without special hardware and/or software modification) and an in vivo example in a mouse is shown. This investigation involved characterizing the MR T1 and T2 relaxation times of PTBD as well as the MR spin-lattice relaxation rate, R1(1/T1), TBD as a function of dissolved oxygen concentration. The T1 and T2 relaxation times and R1 relaxation rates of perfluorooctyl bromide (PFOB) were also obtained, under similar experimental conditions) to compare and contrast PTBD with a representative perfluorocarbon that has been widely employed for 19F MRI/MRS applications.

Original languageEnglish (US)
Pages (from-to)188-195
Number of pages8
JournalMagnetic Resonance in Medicine
Volume29
Issue number2
StatePublished - 1993
Externally publishedYes

Fingerprint

Fluorocarbons
Magnetic Resonance Spectroscopy
Fluorine
perfluoro-2,2,2',2'-tetramethyl-4,4'-bis(1,3-dioxolane)
Fluorine-19 Magnetic Resonance Imaging
Artifacts
Amines
Software
Oxygen

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Sotak, C. H., Hees, P., Huang, H. N., Hung, M. H., Krespan, C. G., & Raynolds, S. (1993). A new perfluorocarbon for use in fluorine-19 magnetic resonance imaging and spectroscopy. Magnetic Resonance in Medicine, 29(2), 188-195.

A new perfluorocarbon for use in fluorine-19 magnetic resonance imaging and spectroscopy. / Sotak, C. H.; Hees, Paul; Huang, H. N.; Hung, M. H.; Krespan, C. G.; Raynolds, S.

In: Magnetic Resonance in Medicine, Vol. 29, No. 2, 1993, p. 188-195.

Research output: Contribution to journalArticle

Sotak, CH, Hees, P, Huang, HN, Hung, MH, Krespan, CG & Raynolds, S 1993, 'A new perfluorocarbon for use in fluorine-19 magnetic resonance imaging and spectroscopy', Magnetic Resonance in Medicine, vol. 29, no. 2, pp. 188-195.
Sotak, C. H. ; Hees, Paul ; Huang, H. N. ; Hung, M. H. ; Krespan, C. G. ; Raynolds, S. / A new perfluorocarbon for use in fluorine-19 magnetic resonance imaging and spectroscopy. In: Magnetic Resonance in Medicine. 1993 ; Vol. 29, No. 2. pp. 188-195.
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abstract = "A new perfluorocarbon, PTBD (perfluoro-2,2,2',2'-tetramethyl-4,4'-bis(1,3-dioxolane)), is described for use in 19F MR imaging and spectroscopy. Two-thirds of the molecular fluorine in PTBD resonates at a single frequency and can be imaged without the use of frequency-selective spin-echo (SE) MRI pulse sequences to suppress chemical shift artifacts. The absence of strong homonuclear spin-spin coupling to the imagable -CF3 groups in PTBD minimizes signal attenuation in 19F SE MRI due to J-modulation effects. For equimolar concentrations of perfluorocarbon, PTBD gives an approximately 17{\%} increase in sensitivity, relative to literature results for perfluorinated amines, at short values of TE (~10 ms) in 19F SE MRI. These attributes allow 19F MRI of PTBD to be performed on standard clinical imaging instrumentation (without special hardware and/or software modification) and an in vivo example in a mouse is shown. This investigation involved characterizing the MR T1 and T2 relaxation times of PTBD as well as the MR spin-lattice relaxation rate, R1(1/T1), TBD as a function of dissolved oxygen concentration. The T1 and T2 relaxation times and R1 relaxation rates of perfluorooctyl bromide (PFOB) were also obtained, under similar experimental conditions) to compare and contrast PTBD with a representative perfluorocarbon that has been widely employed for 19F MRI/MRS applications.",
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