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Fast chemical shift...
Fast chemical shift mapping with multiecho balanced SSFP
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Leupold, Jochen (författare)
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Wieben, Oliver (författare)
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- Månsson, Sven (författare)
- Lund University,Lunds universitet,Diagnostisk radiologi, Malmö,Forskargrupper vid Lunds universitet,Radiology Diagnostics, Malmö,Lund University Research Groups
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Speck, Oliver (författare)
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Scheffler, Klaus (författare)
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Petersson, J. Stefan (författare)
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Hennig, Juergen (författare)
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(creator_code:org_t)
- 2006-11-22
- 2006
- Engelska.
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Ingår i: Magma. - : Springer Science and Business Media LLC. - 1352-8661. ; 19:5, s. 267-273
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Object: A method is proposed that provides spectroscopic images with high spatial resolution and moderate spectral resolution at very short total data acquisition times. Materials and methods: Balanced steady-state free precession (bSSFP, TrueFISP, FIESTA, b-FFE) is combined with a multiecho readout gradient and frequency-sensitive reconstruction such as Fourier reconstruction known from echo-planar spectroscopic imaging (EPSI) or matrix inversion. Balanced SSFP imaging requires short repetition times to minimize banding artefacts, thereby restricting the achievable frequency resolution. Results: Two-dimensional (2D) high-resolution spectroscopic images were produced of three H-1 resonances (water, acetone and fat) on phantoms and water/fat separation in vivo within 1-2 s. Additionally, fast P-31 spectroscopic images were acquired from a phantom consisting of two resonances within 195 ms. Conclusion: Frequency-sensitive reconstruction of multiecho bSSFP data can provide spectroscopic images with high spatial and temporal resolution while the frequency resolution is moderate at around 100 Hz. The method can also separate more than three resonances, allowing for hetero-nuclei metabolite mapping, for example C-13 and P-31.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Radiologi och bildbehandling (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Radiology, Nuclear Medicine and Medical Imaging (hsv//eng)
Nyckelord
- chemical shift imaging
- balanced SSFP
- multiecho sequence
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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