2020
DOI: 10.1002/jor.24606
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Clinical magnetic resonance imaging of arthroplasty at 1.5 T

Abstract: Magnetic resonance imaging (MRI) has historically been avoided for the routine clinical evaluation of metal implants at many clinical centers due to the presence of artifact that creates in‐plane and through‐plane distortions and signal intensity voids in generated images. However, when the image acquisition parameters are appropriately modified and advanced multi‐spectral pulse sequences are used, high‐quality diagnostic images can be generated and may be used for diagnosing patients with suspected periprosth… Show more

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Cited by 12 publications
(10 citation statements)
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“…BMES can be divided into congestive, tumorigenic, traumatic, or vasogenic by different mechanisms [ 32 ]. Congestive BMES secondary to ONFH caused by drugs, such as steroids, is usually caused by vascular occlusion [ 33 ].…”
Section: Discussionmentioning
confidence: 99%
“…BMES can be divided into congestive, tumorigenic, traumatic, or vasogenic by different mechanisms [ 32 ]. Congestive BMES secondary to ONFH caused by drugs, such as steroids, is usually caused by vascular occlusion [ 33 ].…”
Section: Discussionmentioning
confidence: 99%
“…The use of MRI in the evaluation of arthroplasties has previously been limited due to susceptibility artifacts created by the metallic implants. However, artifacts can be decreased by using lower-field-strength magnets (1.5 T rather than 3 T), using fast-spin echo sequences rather than gradient-recalled echo sequences, aligning the implant parallel to the external magnetic field, and placing the implant close to the isocenter [28,42]. The use of short tau time inversion recovery imaging and chemical shift water-fat separation sequences should be used rather than traditional fat saturation methods [28,42].…”
Section: Imaging Techniquesmentioning
confidence: 99%
“…However, artifacts can be decreased by using lower-field-strength magnets (1.5 T rather than 3 T), using fast-spin echo sequences rather than gradient-recalled echo sequences, aligning the implant parallel to the external magnetic field, and placing the implant close to the isocenter [28,42]. The use of short tau time inversion recovery imaging and chemical shift water-fat separation sequences should be used rather than traditional fat saturation methods [28,42]. Decreasing voxel size by decreasing the slice thickness and/or by increasing the frequency acquisition matrix and increasing bandwidth also reduces the occurrence of artifacts [28,42].…”
Section: Imaging Techniquesmentioning
confidence: 99%
“…A literatura define soltura quando ocorre reabsorção circunferencial ao redor do implante, seja do tipo membrana fibrosa ou osteólise. 18,19 Contudo, a implicação da formação da membrana fibrosa na fixação do implante é ainda incerta e controversa, podendo ou não progredir para a soltura franca do componente, necessitando acompanhamento por imagem. 6 A gênese da osteólise ainda não é completamente elucidada na literatura.…”
Section: Soltura Asséptica Em Artroplastiasunclassified