{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T10:19:42Z","timestamp":1778840382191,"version":"3.51.4"},"reference-count":22,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The positron emission tomography (PET)\u2010magnetic resonance (MR) system is a newly emerging technique that yields hybrid images with high\u2010resolution anatomical and metabolic information. With PET\u2010MR imaging, a definitive diagnosis of breast abnormalities will be possible with high spatial accuracy and images will be acquired for the optimal fusion of anatomic locations. Therefore, we propose a PET\u2010compatible two\u2010channel breast MR coil with minimal disturbance to image acquisition which can be used for simultaneous PET\u2010MR imaging in patients with breast cancer.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>For coil design and construction, the conductor loops of the Helmholtz coil were tuned, matched, and subdivided with nonmagnetic components. Element values were optimized with an electromagnetic field simulation. Images were acquired on a GE 600 PET\u2010computed tomography (CT) and GE 3.0 T MR system. For this study, we used the T1\u2010weighted image (volunteer; repetition time (TR), 694 ms; echo time (TE), 9.6 ms) and T2\u2010weighted image (phantom; TR, 8742 ms; TE, 104 ms) with the fast spin\u2010echo sequence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The results of measuring image factors with the proposed radiofrequency (RF) coil and standard conventional RF coil were as follows: signal\u2010to\u2010noise ratio (breast; 207.7 vs. 175.2), percent image uniformity (phantom; 89.22%\u201391.27% vs. 94.63%\u201394.77%), and Hounsfield units (phantom; \u20104.51 vs. 2.38).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our study focused on the feasibility of proposed two\u2010channel Helmholtz loops (by minimizing metallic components and soldering) for PET\u2010MR imaging and found the comparable image quality to the standard conventional coil. We believe our work will help significantly to improve image quality with the development of a less metallic breast MR coil.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acm2.13483","type":"journal-article","created":{"date-parts":[[2021,12,2]],"date-time":"2021-12-02T07:38:25Z","timestamp":1638430705000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Fabrication and evaluation of bilateral Helmholtz radiofrequency coil for thermo\u2010stable breast image with reduced artifacts"],"prefix":"10.1002","volume":"23","author":[{"given":"Young Han","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Radiology Severance Hospital Research Institute of Radiological Science Yonsei University College of Medicine  Seoul Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyu\u2010Ho","family":"Song","sequence":"additional","affiliation":[{"name":"Department of Radiology Washington University School of Medicine  St. Louis Missouri USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaemoon","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Radiology Severance Hospital Research Institute of Radiological Science Yonsei University College of Medicine  Seoul Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Won Jun","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine Severance Hospital Yonsei University College of Medicine  Seoul Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keum Sil","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Radiology Stanford University School of Medicine  Stanford California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min Jung","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine Severance 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