MRI of the liver: Can true FISP replace HASTE?

Herborn, Christoph U.; Vogt, Florian; Lauenstein, Thomas C.; Goyen, Mathias; Debatin, Jörg F.; Ruehm, S. G.

doi:10.1002/jmri.10248

Cited by 40 publications

(27 citation statements)

References 17 publications

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“…This thesis was underlined by a recent study which compared b-SSFP and half-Fourier single-shot turbo spin-echo (HASTE) in the liver. It was found that neither HASTE nor b-SSFP alone are sufficient for detection and characterization of hepatic lesions [31].…”

Section: T2-like Applicationsmentioning

confidence: 99%

Principles and applications of balanced SSFP techniques

Scheffler¹,

2003

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During the past 5 years balanced steady-state free precession (SSFP) has become increasingly important for diagnostic and functional imaging. Balanced SSFP is characterized by two unique features: it offers a very high signal-to noise ratio and a T2/T1-weighted image contrast. This article focuses on the physical principles, on the signal formation, and on the resulting properties of balanced SSFP. Mechanisms for contrast modification, recent clinical application, and potential extensions of this technique are discussed.

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Section: T2-like Applicationsmentioning

confidence: 99%

Principles and applications of balanced SSFP techniques

Scheffler¹,

2003

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“…In the past, calculation of the T2 relaxation time was deemed useful for its differential diagnosis with other focal liver lesions, since a relaxation value of at least 112 ms could differentiate it from metastases with a 92-97% accuracy [5,6,12,[14][15][16]. Other MRI approaches may include a double-echo heavily T2-w sequence [17,18], a fluid-attenuated inversion recovery (FLAIR) or the use of the balanced steady-state free precession (SSFP) sequence [19,20], which can discriminate between haemangiomas and simple liver cysts without the need for contrast injection (Fig. 2).…”

Section: Common Imaging Findingsmentioning

confidence: 99%

Liver haemangioma: common and uncommon findings and how to improve the differential diagnosis

et al. 2007

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Haemangiomas are common focal liver lesions, generally detected in the work-up of asymptomatic patients. From the pathological point of view, they can be classified as small (capillary) or large, with cavernous vascular spaces that may show thrombosis, calcifications and hyalinisation. The polymorphic imaging appearance of haemangiomas depends on their histological features and flow pattern. The widespread use of cross-sectional imaging has allowed an increased detection rate and a better characterisation of this benign tumour. Recent developments of ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) providing high spatial and temporal resolution, together with the use of new contrast agents and/or pulse sequences has broadened the spectrum of imaging findings, contributing to diagnostic refinement in difficult cases. The scope of the present article is to provide an overview of the range of appearances of haemangiomas, explored with recent crosssectional imaging modalities, emphasising its atypical findings as explored by temporally resolved contrast-enhanced imaging.

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“…Although multishot EPI shows higher lesion-to-liver CNR and lesion conspicuity, frequent artifacts have led some researchers to suggest that it should be used for supplemental or additional imaging only (5)(6)(7)14). Balanced steady state techniques such as true FISP are reported to have low sensitivity for detection of "malignant or unusual lesions," thus preventing it from replacing other established T2-weighted techniques (13).…”

Section: Discussionmentioning

confidence: 99%

Focal liver lesions: Breathhold gradient‐ and spin‐echo T2‐weighted imaging for detection and characterization

Yoshikawa

Mitchell

Hirota

et al. 2006

Magnetic Resonance Imaging

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Purpose:To evaluate breathhold gradient-and spin-echo (GRASE) T2-weighted imaging for the detection and characterization of focal liver lesions. Materials and Methods:Two GRASE sequences with different echo times (75 and 90 msec, GRASE 75 and GRASE 90 ) were compared with respiratory-triggered fast spin-echo (SE) and breathhold fast SE in 64 patients with 103 malignant and 51 benign lesions. Compared with respiratorytriggered and breathhold fast SE, GRASE reduced scan time by 77% to 82% and 21% to 27%, respectively. Two independent readers evaluated image quality and reviewed 504 liver segments on a segment-by-segment basis. Observer performance was evaluated with receiver operating characteristic (ROC) curve analysis. The signal-to-noise ratio (SNR) of liver and spleen, and lesion-to-liver contrastto-noise ratio (CNR) were also measured. Results:The overall quality of the GRASE images was higher than that of the respiratory-triggered and breathhold fast SE images, although signal inhomogeneities were more frequently observed with GRASE. No significant difference in the values of the area under the ROC curve (Az) for malignant lesion detection was found. The mean SNR and CNR were highest for respiratory-triggered fast SE.Conclusion: T2-weighted breathhold GRASE has the potential to provide faster liver imaging.

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MRI of the liver: Can true FISP replace HASTE?

Cited by 40 publications

References 17 publications

Principles and applications of balanced SSFP techniques

Principles and applications of balanced SSFP techniques

Liver haemangioma: common and uncommon findings and how to improve the differential diagnosis

Focal liver lesions: Breathhold gradient‐ and spin‐echo T2‐weighted imaging for detection and characterization

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