False positive magnetic resonance imaging of a choroidal nevus simulating choroidal melanoma

1989 ◽  
Vol 13 (4) ◽  
pp. 265-268 ◽  
Author(s):  
Kwan-Rong Liu ◽  
Gholam A. Peyman ◽  
Mahmood F. Mafee ◽  
Dao-Yi Yu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
False Positive ◽  
Choroidal Melanoma ◽  
Resonance Imaging ◽  
Choroidal Nevus

The Utility of MRI With Multiacquisition Variable-Resonance Image Combination (MAVRIC) in Diagnosing Deep Total Hip Arthroplasty Infection

2021 ◽  
pp. 155633162110092
Author(s):  
Ashley E. Levack ◽  
Chelsea Koch ◽  
Harold G. Moore ◽  
Michael B. Cross
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
False Positive ◽  
False Positive Rate ◽  
Positive Finding ◽  
Resonance Imaging ◽  
Total Hip ◽  
Positive Rate

Background: The 2010 American Academy of Orthopaedic Surgeons Clinical Practice Guidelines report insufficient evidence to address the diagnostic efficacy of magnetic resonance imaging (MRI) for periprosthetic joint infection (PJI). Questions/Purposes: The purpose of this study was to determine the utility of MRI with multiacquisition variable-resonance image combination (MAVRIC) metal artifact suppression techniques in diagnosing PJI in the setting of total hip arthroplasty (THA). Methods: Multiacquisition variable-resonance image combination MRIs obtained of THAs between November 2012 and November 2016 were queried. Radiology reports were classified as positive (suspicious for infection), negative (no features of infection), or inconclusive (infection cannot be excluded or correlation with aspiration suggested if clinically concerned). Chart review identified cases of deep PJI according to the modified Musculoskeletal Infection Society criteria. Results: Of 2156 MRIs of THAs included, MRI was concerning for infection in 1.8% (n = 39), inconclusive in 1.2% (n = 26), and negative in 97.0% (n = 2091). Deep PJI was identified in 53 (2.5%) patients, 30 of whom (56.6%) had conclusively positive finding on MRI (false-negative rate: 43.4%, sensitivity: 56.6%). Of 2103 aseptic THAs, only 9 (0.4%) MRIs were read as suspicious for infection (false-positive rate: 0.4%; specificity: 99.6%). Conclusion: Magnetic resonance imaging with MAVRIC is a highly specific test for PJI with a low false-positive rate. This indicates that when clinicians are provided with an MRI that unexpectedly suggests infection, a formal evaluation for infection is indicated. In patients with otherwise equivocal diagnostic findings, MRI may help confirm, but not refute, a diagnosis of PJI. Prospective study with more experienced image reviewers may further support the use of MRI in PJI.

Restricting False-positive Magnetic Resonance Imaging Scans to Reduce Overdiagnosis of Prostate Cancer

2021 ◽  
Vol 79 (1) ◽  
pp. 30-32
Author(s):  
Chris H. Bangma ◽  
Geert J.L.H. van Leenders ◽  
Monique J. Roobol ◽  
Ivo G. Schoots
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Magnetic Resonance ◽  
False Positive ◽  
Resonance Imaging

Histologic findings associated with false-positive multiparametric magnetic resonance imaging performed for prostate cancer detection

2019 ◽  
Vol 83 ◽  
pp. 159-165 ◽  
Author(s):  
Jennifer B. Gordetsky ◽  
David Ullman ◽  
Luciana Schultz ◽  
Kristin K. Porter ◽  
Maria del Carmen Rodriguez Pena ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Magnetic Resonance ◽  
Cancer Detection ◽  
False Positive ◽  
Resonance Imaging ◽  
Prostate Cancer Detection ◽  
Multiparametric Magnetic Resonance Imaging

scholarly journals False-Positive Cholesteatomas on Non-Echoplanar Diffusion-Weighted Magnetic Resonance Imaging

2020 ◽  
Vol 41 (5) ◽  
pp. e588-e592 ◽  
Author(s):  
Ethan G. Muhonen ◽  
Hossein Mahboubi ◽  
Omid Moshtaghi ◽  
Ronald Sahyouni ◽  
Yaser Ghavami ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
False Positive ◽  
Resonance Imaging ◽  
Diffusion Weighted ◽  
Weighted Magnetic Resonance Imaging

False-positive magnetic resonance imaging skeletal survey in a patient with sporadic hypophosphatemic osteomalacia

2003 ◽  
Vol 21 (1) ◽  
pp. 57-59 ◽  
Author(s):  
Yasuo Imanishi ◽  
Kiyoshi Nakatsuka ◽  
Tetsuo Nakayama ◽  
Terue Okamura ◽  
Keisuke Kobayashi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
False Positive ◽  
Skeletal Survey ◽  
Resonance Imaging ◽  
Hypophosphatemic Osteomalacia

Pathologic correlates of false positive breast magnetic resonance imaging findings: which lesions warrant biopsy?

2005 ◽  
Vol 190 (4) ◽  
pp. 633-640 ◽  
Author(s):  
Samantha A. Langer ◽  
Kathleen C. Horst ◽  
Debra M. Ikeda ◽  
Bruce L. Daniel ◽  
Christina S. Kong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
False Positive ◽  
Breast Magnetic Resonance Imaging ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Breast Magnetic Resonance
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