Shortened breath-hold contrast-enhanced MRI of the liver using a new parallel imaging technique, CAIPIRINHA (controlled aliasing in parallel imaging results in higher acceleration): a comparison with conventional GRAPPA technique.
Purpose: We examined whether the shortened breath-hold 3-dimensional volumetric interpolated breath-hold examination (3D-VIBE) sequence for high acceleration factor (AF) using the controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) could substitute for the conventiona...
| Publicado en: | Abdominal Imaging Vol. 40; no. 8; pp. 3091 - 3099 |
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| Autores principales: | , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Oct2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=110653837&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 110653837 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09428925 O52 jtl: Abdominal Imaging issn: 09428925 maglogo: N pubinfo: dt: Oct2015 vid: 40 iid: 8 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 110653837 110653837 NLM26099474 110653837 10.1007/s00261-015-0491-z NLM26099474 110653837 ppf: 3091 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Shortened breath-hold contrast-enhanced MRI of the liver using a new parallel imaging technique, CAIPIRINHA (controlled aliasing in parallel imaging results in higher acceleration): a comparison with conventional GRAPPA technique. aug: au: Ogawa, Masaki Kawai, Tatsuya Kan, Hirohito Kobayashi, Susumu Akagawa, Yoshihiro Suzuki, Kazushi Nojiri, Shunsuke Ozawa, Yoshiyuki Shibamoto, Yuta affil: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, 1, Kawasumi, Mizuho-cho, Mizuho-ku Nagoya 467-8601 Japan sug: subj: Breath Holding Liver Neoplasms Pathology Magnetic Resonance Imaging Methods Contrast Media Liver Pathology Image Enhancement Image Interpretation, Computer Assisted Methods Male Aged Algorithms Young Adult Imaging, Three-Dimensional Artifacts Human Reproducibility of Results Female Adult Aged, 80 and Over Time Factors Prospective Studies Middle Age Validation Studies Comparative Studies Evaluation Research Multicenter Studies Aged: 65+ years Adult: 19-44 years Aged, 80 & over Middle Aged: 45-64 years Male Female ab: Purpose: We examined whether the shortened breath-hold 3-dimensional volumetric interpolated breath-hold examination (3D-VIBE) sequence for high acceleration factor (AF) using the controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) could substitute for the conventional sequence using generalized autocalibrating partially parallel acquisition (GRAPPA) in patients undergoing routine gadoxetic acid-enhanced liver MRI.Materials and Methods: Thirty patients with clinically suspected focal liver lesions were scanned using 3D-VIBE sequences with GRAPPA with AF = 2 and AF = 4 and CAIPIRINHA with AF = 4 (acquisition times: 21, 14, and 12 s, respectively) during the hepatobiliary phase. Visual evaluations using a 3- or 5-point scale and signal-to-noise ratio (SNR) analysis were performed for the 3 sequences.Results: For CAIPIRINHA with AF = 4, there was significantly less image noise in both visual evaluation and SNR analysis and fewer parallel imaging artifacts than for GRAPPA with AF = 4 (P < 0.0005); it was equal to GRAPPA with AF = 2 and had fewer motion artifacts than GRAPPA with AF = 2 and 4 (P < 0.0012). The liver edge sharpness and hepatic vessel clarity, lesion conspicuity, and overall image quality were rated significantly higher with CAIPIRINHA with AF = 4 than GRAPPA with AF = 2 and AF = 4 (P < 0.009). For GRAPPA with AF = 4, lesion conspicuity and overall image quality were rated significantly lower than for GRAPPA with AF = 2 (P < 0.012).Conclusion: The shortened breath-hold 3D-VIBE sequence using the new CAIPIRINHA technique with a high AF of 4 was superior to the conventional GRAPPA sequence. The shortened breath-hold sequence using GRAPPA with a high AF of 4 worsened the image quality and lesion conspicuity. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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