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Detection of focal liver lesions in unenhanced and ferucarbotran-enhanced magnetic resonance imaging: a comparison of T2-weighted breath-hold and respiratory-triggered sequences

✍ Scribed by Matthias Rief; Moritz Wagner; Tobias Franiel; Viola Bresan; Matthias Taupitz; Christian Klessen; Bernd Hamm; Patrick Asbach

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
329 KB
Volume
27
Category
Article
ISSN
0730-725X

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✦ Synopsis

Purpose:

To investigate the image quality and detection rate of focal liver lesions by comparing a t2-weighted breath-hold single-shot sequence and a t2-weighted high spatial resolution fast spin-echo sequence with respiratory triggering via unenhanced and superparamagnetic iron oxide (spio)-enhanced liver imaging.

Materials and methods:

The study was approved by the local ethical review board; informed consent was waived. liver-lesion contrast was measured and a qualitative consensus evaluation of image quality and lesion detection was performed in 42 consecutive patients using a 1.5-t mr system.

Results:

The liver-lesion contrast was significantly higher (p<.05) for the respiratory-triggered sequence compared to the breath-hold sequence regarding unenhanced and spio-enhanced imaging. the respiratory-triggered sequences revealed significantly higher image quality scores as well as higher numbers of detected liver lesions compared to the breath-hold sequence on unenhanced and spio-enhanced imaging. the spio contrast did not significantly improve the number of detected lesions on the respective sequences (p>.05).

Conclusion:

We find that respiratory-triggered fast spin-echo sequences produce a higher image quality and a more precise liver-lesion detection rate thereby justifying the increased acquisition time necessary for this method.

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