[Intl_DxMedPhys] MRI ACR Phantom Artifacts

[Greg Harrington]

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 at foxfirescientific.com





On Oct 6, 2026, at 3:03 PM, High, Maynard via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu> wrote:

MRI experienced Listers:
I have come across  some nasty artifacts in the ACR Phantom images for ACR accreditation images and wonder if anybody has any advice.

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.
The phantom is the Medium sized.

First is the ACR T1 sequence:
What could be causing these rings?
<image.png>

Next is the Site FSE T1 Flair

<image.png>
Maynard High
Medical Physics: Westchester Medical Center - NYMC
914-493-1410
maynard.high at wmchealth.org<mailto:maynard.high at wmchealth.org>

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