| Real-Time Virtual Sonography, A Coordinated Sonography and MRI System that Uses Magnetic Navigation, Improves the Sonographic Identification of Enhancing Lesions on Breast MRI. | |
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MedLine Citation:
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PMID: 22137178 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This study verified that recently developed real-time virtual sonography (RVS) to coordinate a sonography image and the magnetic resonance imaging (MRI) multiplanar reconstruction (MPR) with magnetic navigation was useful. The purpose of this study was to evaluate the accuracy of RVS to sonographically identify enhancing lesions by breast MRI. Between December 2008 and May 2009, RVS was performed in 51 consecutive patients with 63 enhancing lesions. MRI was performed with the patients in the supine position using a 1.5-T imager with a body surface coil to achieve the same position as with sonography. To assess the accuracy of the RVS, the following three issues were analyzed: (i) The sonographic detection rate of enhancing lesions, (ii) the comparison of the tumor size measured by sonography and the MRI-MPR and (iii) the positioning errors as the distance from the actual sonographic position to the expected MRI position in 3-D. Among the 63 enhancing lesions, 42 (67%) lesions were identified by conventional B-mode, whereas the remaining 21 (33%) initial conventional B-mode occult lesions were identified by RVS alone. The sonographic size of the lesions detected by RVS alone was significantly smaller than that of lesions detected by conventional B-mode (p < 0.001). The mean tumor size provided by RVS was 12.3 mm for real-time sonography and 14.1 mm for MRI-MPR (r = 0.848, p < 0.001). The mean positioning errors for the transverse and sagittal planes and the depth from the skin were 7.7, 6.9 and 2.8 mm, respectively. The overall mean 3D positioning error was 12.0 mm. Our results suggest that RVS has good targeting accuracy to directly compare a sonographic image with MRI results without operator dependence. |
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Authors:
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Shogo Nakano; Miwa Yoshida; Kimihito Fujii; Kyoko Yorozuya; Junko Kousaka; Yukako Mouri; Takashi Fukutomi; Yukihiko Ohshima; Junko Kimura; Tsuneo Ishiguchi |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Ultrasound in medicine & biology Volume: 38 ISSN: 1879-291X ISO Abbreviation: Ultrasound Med Biol Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2011-12-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0410553 Medline TA: Ultrasound Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 42-9 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Division of Breast and Endocrine Surgery, Department of Surgery, Aichi Medical University, 21 Nagakute-cho, Aichi-gun, Aichi, 480-1195, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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