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High resolution sagittal T2 in the study of the female pelvis by MRI: comparative study of motion-artifact reduction techniques

2019Other Open access
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dc.contributor.authorFreitas, Davide
dc.contributor.authorAraújo, C. S. D. S. M.
dc.contributor.authorThemudo, R.
dc.contributor.authorAbreu, E. M.
dc.date.accessioned2022-05-18T15:29:52Z
dc.date.available2022-05-18T15:29:52Z
dc.date.issued2019
dc.description.abstractThe high contrast resolution, possibility of tissue characterization, multiplanar imaging, lack of ionizing radiation and the increasing availability of scanners, made MRI an important tool in female pelvis diagnostic, specifically in ovarian and uterine pathology. Fasting, empty bladder and compression by a pelvic band, reduce the movement and phase artifacts caused by peristaltic movements of the intestine and other organs (fig.1), as well as pelvic respiratory artifacts. However, other resources, such as the intravenous administration of anti-spasmodic drugs (glucagon or hyoscine butyl-bromide) are often required to increase imaging quality, and its routine application is often recommended . These drugs have few contraindications, such as glaucoma and myasthenia gravis, and low incidence of allergic reactions. The most common side effect is blurred vision, which occurs in about 10 % of the patients and is reversible in 30-45 minutes. The majority of modern MRI scanners include advances in image acquisition, such as the sequences PROPPLER / BLADE (General Electric and Siemens terms, respectively). These sequences have a radial k-space sampling concept with parallel data lines rotating around the k-space center, which allows spatial inconsistencies. Data indicating through-plane motion based on correlation measurement are rejected. Motion artifacts are further reduced through averaging in low spatial frequencies. Thus, considering the side effects that antispasmodic drugs can provoke, and the existence of modern scanners with advanced acquisition techniques that minimize movement artifacts, the aim of our study was to compare image quality, anatomic detail and presence of artifacts on high resolution sagittal T2-turbo-spin-echo (TSE), T2-TSE-BLADE and on T2-TSE after intravenous administration of an antispasmodic drug, hereby referred as T2-TSE-iv, in the female pelvic MRI study.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFreitas, D., Araújo, C., Themudo, R., & Abreu, E. (2019). High resolution sagittal T2 in the study of the female pelvis by MRI: comparative study of motion-artifact reduction techniques. https://doi.org/10.26044/ecr2019/C-2344pt_PT
dc.identifier.doi10.26044/ecr2019/C-2344pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/20537
dc.language.isoporpt_PT
dc.peerreviewedyespt_PT
dc.publisherEuropean Society of Radiologypt_PT
dc.subjectTissue characterisationpt_PT
dc.subjectDrugs / Reactionspt_PT
dc.subjectArtifactspt_PT
dc.subjectTechnical aspectspt_PT
dc.subjectImaging sequencespt_PT
dc.subjectComparative studiespt_PT
dc.subjectMRpt_PT
dc.subjectImage manipulation / Reconstructionpt_PT
dc.subjectPelvispt_PT
dc.subjectMR physicspt_PT
dc.subjectGenital / Reproductive system femalept_PT
dc.titleHigh resolution sagittal T2 in the study of the female pelvis by MRI: comparative study of motion-artifact reduction techniquespt_PT
dc.typeother
dspace.entity.typePublication
oaire.citation.conferencePlaceVienna, Austriapt_PT
oaire.citation.endPage13pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEPOS, ECR2019pt_PT
person.familyNameFreitas
person.givenNameDavide
person.identifier.ciencia-idDC13-A92F-4D78
person.identifier.orcid0000-0003-2689-6012
rcaap.rightsopenAccesspt_PT
rcaap.typeotherpt_PT
relation.isAuthorOfPublicationd88d8b38-945c-43bb-9270-b7909a60555d
relation.isAuthorOfPublication.latestForDiscoveryd88d8b38-945c-43bb-9270-b7909a60555d

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