Quantitative and qualitative comparison of 3.0 T and 1.5 T MR imaging of the liver in patients with diffuse parenchymal liver disease

Tsurusaki, Masakatsu; Semelka, Richard C.; Zapparoli, Maurício; Elias, Jorge; Altun, Ersan; Pamuklar, Ertan; Sugimura, Kazuro

doi:10.1016/j.ejrad.2008.07.027

Cited by 42 publications

(24 citation statements)

References 32 publications

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“…Using superparamagnetic iron oxide (SPIO)-enhanced MRI, stronger signal attenuation does not occur with 3-T versus 1.5-T [51]. One study suggests that the image quality of the 1.5-T non-contrast T1-and T2-weighted sequences is significantly better than with 3-T imaging [52].…”

Section: -T Liver Mrimentioning

confidence: 96%

Consensus report of the 2nd International Forum for Liver MRI

et al. 2009

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Discussion at the 2nd Forum for Liver MRI: The International Primovist User Meeting on the use of the hepatocyte-specific contrast agent gadolinium-ethoxybenzyl-diethylene triamine penta-acetic acid (Gd-EOB-DTPA) is reported. Changes to the currently recommended Gd-EOB-DTPA imaging protocol were identified that can reduce the overall examination time. The potential benefits of 3-T MR imaging using Gd-EOB-DTPA have yet to be fully explored. Data show that Gd-EOB-DTPA-enhanced MRI allows identification of liver lesions and provides a differential diagnosis of hepatocellular nodules in the noncirrhotic and cirrhotic liver, based on vascularity, during the dynamic arterial, portal-venous and late phases, and during the hepatocytespecific phase. Current European, American and Japanese guidelines for the diagnosis of hepatocellular carcinoma need to take into account the recent rapid advances in liver imaging. Based on published clinical trials and the experience of the attendees in the use of Gd-EOB-DTPA in liver imaging, a new simplified, non-invasive diagnostic algorithm was proposed that would be applicable to both Eastern and Western clinical practice in the evaluation of hepatocarcinogenesis and hepatocellular carcinoma. Preliminary clinical experience suggests that Gd-EOB-DTPA may also provide an innovative and cost-effective one-stop approach for staging rectal cancer using wholebody imaging.

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Section: -T Liver Mrimentioning

confidence: 96%

Consensus report of the 2nd International Forum for Liver MRI

et al. 2009

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“…Raw-data interpolation of acquired in-phase and opposed-phase echoes without substantial signal loss is achieved by asymmetric echo sampling in the readout direction, thereby effectively reducing the number of phase-encoding steps while sinc interpolation is used for completion of the k-space matrix (12).…”

Section: Nonenhanced Hepatic Mr Imagingmentioning

confidence: 99%

Diffuse Liver Disease: Strategies for Hepatic CT and MR Imaging

Boll¹,

Merkle²

2009

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The liver plays several complex but essential roles in the metabolism of amino acids, carbohydrates, and lipids, as well as synthesis of proteins. The basic pathophysiology of diffuse parenchymal hepatic diseases usually represents a failure in one of these metabolic pathways. Specific parenchymal diseases can be categorized as storage, vascular, and inflammatory diseases. Cross-sectional hepatic imaging techniques, specifically multidetector computed tomography (CT) and magnetic resonance (MR) imaging, have roles in evaluation of diffuse liver disease. The prominent role of multidetector CT is primarily defined by its excellent morphologic visualization capabilities, in particular of diffuse or focal intrahepatic lesions as well as of anatomic relationships between the liver and adjacent organs. The variety of available multidetector CT scanners covers a huge spectrum of detector configurations ranging from equally sized and equally spaced detector arrays to asymmetric detector configurations, resulting in imaging protocols with unique parameters for almost each multidetector CT system. In addition to 64-detector row imaging, hepatic multidetector CT can be performed with emerging techniques such as dual-energy CT. Hepatic MR imaging has been proved to be a comprehensive modality for assessing the morphology and functional characteristics of the liver. Concurrent technical improvements as well as implementation of advanced imaging sequence designs permit high-quality examination of the liver with T1-, T2-, and diffusion-weighted pulse sequences. Three basic demands remain if MR imaging is chosen for hepatic imaging: to improve parenchymal contrast, to suppress respiratory motion, and to ensure complete anatomic coverage. Supplemental material available at http://radiographics.rsna.org/content/29/6/1591/suppl/DC1.

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“…Third, hepatocyte-phase images were assessed only using 3D GRE sequences. At 3.0 T, some studies have shown advantages of these sequences in Gd-DTPA-enhanced MR imaging [15][16][17][18]. We believe that 3D GRE sequences would be essential and superior to 2D GRE sequences owing to their thinner section thickness and higher spatial resolution.…”

Section: Discussionmentioning

confidence: 93%

“…Theoretically, the signal-to-noise ratio (SNR) can be expected increase by two-fold [13][14][15][16], and the contrast-to-noise ratio (CNR) on the post-contrast gradient-echo sequence also to improve compared with that in the sequence obtained at 1.5 T [17,18].…”

Section: Introductionmentioning

confidence: 97%