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European Radiology
Erschienen in: European Radiology 12/2007

01.12.2007 | Magnetic Resonance

Diffusion-weighted whole-body MR imaging with background body signal suppression: a feasibility study at 3.0 Tesla

verfasst von: Petra Mürtz, Carsten Krautmacher, Frank Träber, Jürgen Gieseke, Hans H. Schild, Winfried A. Willinek

Erschienen in: European Radiology | Ausgabe 12/2007

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Abstract

The purpose was to provide a diffusion-weighted whole-body magnetic resonance (MR) imaging sequence with background body signal suppression (DWIBS) at 3.0 Tesla. A diffusion-weighted spin-echo echo-planar imaging sequence was combined with the following methods of fat suppression: short TI inversion recovery (STIR), spectral attenuated inversion recovery (SPAIR), and spectral presaturation by inversion recovery (SPIR). Optimized sequences were implemented on a 3.0- and a 1.5-Tesla system and evaluated in three healthy volunteers and six patients with various lesions in the neck, chest, and abdomen on the basis of reconstructed maximum intensity projection images. In one patient with metastases of malignant melanoma, DWIBS was compared with 18F-fluorodeoxyglucose positron emission tomography (FDG-PET). Good fat suppression for all regions and diagnostic image quality in all cases could be obtained at 3.0 Tesla with the STIR method. In comparison with 1.5 Tesla, DWIBS images at 3.0 Tesla were judged to provide a better lesion-to-bone tissue contrast. However, larger susceptibility-induced image distortions and signal intensity losses, stronger blurring artifacts, and more pronounced motion artifacts degraded the image quality at 3.0 Tesla. A good correlation was found between the metastases as depicted by DWIBS and those as visualized by FDG-PET. DWIBS is feasible at 3.0 Tesla with diagnostic image quality.
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Metadaten
Titel
Diffusion-weighted whole-body MR imaging with background body signal suppression: a feasibility study at 3.0 Tesla
verfasst von
Petra Mürtz
Carsten Krautmacher
Frank Träber
Jürgen Gieseke
Hans H. Schild
Winfried A. Willinek
Publikationsdatum
01.12.2007
Verlag
Springer-Verlag
Erschienen in
European Radiology / Ausgabe 12/2007
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-007-0717-8

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