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Radial volumetric imaging breath-hold examination (VIBE) with k-space weighted image contrast (KWIC) for dynamic gadoxetic acid (Gd-EOB-DTPA)-enhanced MRI of the liver: advantages over Cartesian VIBE in the arterial phase.

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Title: Radial volumetric imaging breath-hold examination (VIBE) with k-space weighted image contrast (KWIC) for dynamic gadoxetic acid (Gd-EOB-DTPA)-enhanced MRI of the liver: advantages over Cartesian VIBE in the arterial phase.
Authors: Fujinaga, Yasunari1 fujinaga@shinshu-u.ac.jp, Ohya, Ayumi1, Tokoro, Hirokazu1, Yamada, Akira1, Ueda, Kazuhiko1, Ueda, Hitoshi2, Kitou, Yoshihiro2, Adachi, Yasuo2, Shiobara, Aya2, Tamaru, Naomichi2, Nickel, Marcel3, Maruyama, Katsuya4, Kadoya, Masumi1
Source: European Radiology. Jun2014, Vol. 24 Issue 6, p1290-1299. 10p. 5 Black and White Photographs, 3 Charts, 2 Graphs.
Subjects: Hepatic artery, Liver, Abdominal aorta, Magnetic resonance imaging, Image quality in radiography
Abstract: Objectives: To compare radial volumetric imaging breath-hold examination with k-space weighted image contrast reconstruction (r-VIBE-KWIC) to Cartesian VIBE (c-VIBE) in arterial phase dynamic gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (DCE-MRI) of the liver. Methods: We reviewed 53 consecutive DCE-MRI studies performed on a 3-T unit using c-VIBE and 53 consecutive cases performed using r-VIBE-KWIC with full-frame image subset (r-VIBE) and sub-frame image subsets (r-VIBE; temporal resolution, 2.5-3 s). All arterial phase images were scored by two readers on: (1) contrast-enhancement ratio (CER) in the abdominal aorta; (2) scan timing; (3) artefacts; (4) visualisation of the common, right, and left hepatic arteries. Results: Mean abdominal aortic CERs for c-VIBE, r-VIBE, and r-VIBE were 3.2, 4.3 and 6.5, respectively. There were significant differences between each group ( P < 0.0001). The mean score for c-VIBE was significantly lower than that for r-VIBE and r-VIBE in all factors except for visualisation of the common hepatic artery ( P < 0.05). The mean score of all factors except for scan timing for r-VIBE was not significantly different from that for r-VIBE. Conclusions: Radial VIBE-KWIC provides higher image quality than c-VIBE, and r-VIBE features high temporal resolution without image degradation in arterial phase DCE-MRI. Key Points: • Radial VIBE-KWIC minimised artefact and produced high-quality and high-temporal-resolution images. • Maximum abdominal aortic enhancement was observed on sub-frame images of r-VIBE-KWIC. • Using r-VIBE-KWIC, optimal arterial phase images were obtained in over 90 %. • Using r-VIBE-KWIC, visualisation of the hepatic arteries was improved. • A two-reader study revealed r-VIBE-KWIC's advantages over Cartesian VIBE. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Radial volumetric imaging breath-hold examination (VIBE) with k-space weighted image contrast (KWIC) for dynamic gadoxetic acid (Gd-EOB-DTPA)-enhanced MRI of the liver: advantages over Cartesian VIBE in the arterial phase.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Jun2014, Vol. 24 Issue 6, p1290-1299. 10p. 5 Black and White Photographs, 3 Charts, 2 Graphs.
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  Data: Objectives: To compare radial volumetric imaging breath-hold examination with k-space weighted image contrast reconstruction (r-VIBE-KWIC) to Cartesian VIBE (c-VIBE) in arterial phase dynamic gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (DCE-MRI) of the liver. Methods: We reviewed 53 consecutive DCE-MRI studies performed on a 3-T unit using c-VIBE and 53 consecutive cases performed using r-VIBE-KWIC with full-frame image subset (r-VIBE) and sub-frame image subsets (r-VIBE; temporal resolution, 2.5-3 s). All arterial phase images were scored by two readers on: (1) contrast-enhancement ratio (CER) in the abdominal aorta; (2) scan timing; (3) artefacts; (4) visualisation of the common, right, and left hepatic arteries. Results: Mean abdominal aortic CERs for c-VIBE, r-VIBE, and r-VIBE were 3.2, 4.3 and 6.5, respectively. There were significant differences between each group ( P &lt; 0.0001). The mean score for c-VIBE was significantly lower than that for r-VIBE and r-VIBE in all factors except for visualisation of the common hepatic artery ( P &lt; 0.05). The mean score of all factors except for scan timing for r-VIBE was not significantly different from that for r-VIBE. Conclusions: Radial VIBE-KWIC provides higher image quality than c-VIBE, and r-VIBE features high temporal resolution without image degradation in arterial phase DCE-MRI. Key Points: • Radial VIBE-KWIC minimised artefact and produced high-quality and high-temporal-resolution images. • Maximum abdominal aortic enhancement was observed on sub-frame images of r-VIBE-KWIC. • Using r-VIBE-KWIC, optimal arterial phase images were obtained in over 90 %. • Using r-VIBE-KWIC, visualisation of the hepatic arteries was improved. • A two-reader study revealed r-VIBE-KWIC&#39;s advantages over Cartesian VIBE. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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