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Imaging near titanium total hip arthroplasty at 0. 55 T compared with 3 T
Author(s) -
Keskin Kübra,
Cui Sophia X.,
Li Bochao,
Gross Jordan S.,
Acharya Jay,
Buser Zorica,
Lieberman Jay R.,
Hargreaves Brian A.,
Nayak Krishna S.
Publication year - 2025
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.30438
Subject(s) - titanium , nuclear medicine , fast spin echo , total hip arthroplasty , magnetic resonance imaging , biomedical engineering , medicine , materials science , radiology , surgery , metallurgy
Abstract Purpose To compare 0.55 T and 3 T MRI for imaging patients with titanium total hip arthroplasty (THA). Patients with orthopedic metallic implants often require diagnostic imaging to evaluate adjacent tissues. MRI performance measures, including artifact levels and SNR, vary with field strength. Methods Six patients with titanium THA were scanned with similar protocols at 0.55 T and 3 T, including proton density (PD) weighted turbo spin echo (TSE), PD TSE with view‐angle tilting (TSE + VAT), PD slice encoding for metal artifact correction (SEMAC), and short tau inversion recovery with SEMAC (STIR‐SEMAC). Images from both field strengths were scored by two readers and qualitatively and quantitatively compared. Results Diagnostic confidence was significantly higher at 0.55 T compared to 3 T. Perceived metal artifact was substantially reduced at 0.55 T compared to 3 T. At 0.55 T, diagnostic imaging was achieved both without and with multi spectral imaging (MSI) for PD weighted images. Conclusion Compared to 3 T, 0.55 T MRI offers substantially reduced metal artifacts and higher diagnostic confidence when imaging titanium THA. Advanced multi‐spectral techniques may not be required when the metallic components are entirely titanium.