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Definitely see the second artifact a lot with Turbo Spin Echo sequences, especially with high turbo factors. Greg Harrington, PhD, DABMP, DABSNM, MRSE (MRSCTM) Foxfire Scientific, Inc. harrington@ foxfirescientific. com On Oct 6, 2026, at 3: 03</div>
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Definitely see the second artifact a lot with Turbo Spin Echo sequences, especially with high turbo factors.
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<div>Greg Harrington, PhD, DABMP, DABSNM, <span style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; orphans: 2;">MRSE (MRSC</span><sup>TM</sup><span style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; orphans: 2;">)</span></div>
<div>Foxfire Scientific, Inc.</div>
<div>harrington@foxfirescientific.com</div>
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<div>On Oct 6, 2026, at 3:03 PM, High, Maynard via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list@lists.osu.edu> wrote:</div>
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MRI experienced Listers:</div>
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I have come across some nasty artifacts in the ACR Phantom images for ACR accreditation images and wonder if anybody has any advice.</div>
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The MRI is a 2014 GE Optima MR450W. All images were with PURE uniformity correction on and the coil was an HNS Head 12-Channel.</div>
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The phantom is the Medium sized.</div>
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First is the ACR T1 sequence:</div>
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What could be causing these rings?</div>
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Next is the Site FSE T1 Flair</div>
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Maynard High</div>
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Medical Physics: Westchester Medical Center - NYMC</div>
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914-493-1410</div>
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<a href="mailto:maynard.high@wmchealth.org">maynard.high@wmchealth.org</a></div>
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