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primary topic: Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI

Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI
type: AcademicArticle
type: Article
abstract: Background Little is known of the influence of scanner field strength on quantitative diffusivity variables, especially kurtosis in healthy ovaries. Purpose To evaluate the influence of scanner field strength on quantitative diffusion variables in pelvic MRI of the ovaries. Material and Methods This prospective, single-centre study consisted of repeated 1.5-T and 3-T examinations in 30 female volunteers (mean age=27.9 years, age range=20.3–45.2 years) from July 2017 to September 2019. Multi b-value DWI 0, 50, 100, 800, 1500, 2000 s/mm 2 was acquired over three timepoints during the menstrual cycle. Ovaries were segmented at b = 1500 s/mm 2 . Median apparent diffusion coefficient (ADC) and advanced kurtosis parameters D app and K app were calculated. Statistical analysis was performed with the variations of diffusivity variables being compared between 1.5-T and 3-T MRI using a Mann–Whitney rank-sum test. Results Median ADC and D app (µm²/ms) did not statistically differ. Median ADC were 1.509 (range=1.371–1.610), 1.619 (range=1.463–1.747), and 1.511 (range=1.423–1.639) at 1.5 T; 1.542 (range=1.428–1.682), 1.658 (range=1.510–1.806), and 1.572 (range=1.455–1.709) at 3 T ( P = 0.14, 0.19, and 0.07), whereas median D app were 2.024 (range=1.913–2.152), 2.192 (range=2.010–2.327), and 2.045 (range=1.958–2.170) at 1.5 T; 2.013 (range=1.952–2.188), 2.179 (range=2.018–2.327), and 2.082 (range=1.959–2.194) at 3 T ( P = 0.77, 0.99, and 0.34) for timepoints 1, 2, and 3, respectively. Statistical comparison of K app revealed significant differences for all timepoints: 0.629 (range=0.595–0.652), 0.604 (range=0.574–0.651), and 0.622 (range=0.581–0.664) at 1.5 T; 0.601 (range=0.563–0.626), 0.567 (range=0.526–0.633), and 0.599 (range=0.541–0.650) at 3 T ( P < 0.001, 0.005, and 0.03). Conclusion Diffusivity mapping in the ovaries provides similar absolute median diffusion values, but statistically significant differences in absolute kurtosis values between 1.5 T and 3 T.
date: 2025
volume: 66
issue: 5
is part of: Acta Radiologica
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
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subject: 610 Medizin

Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (PDF)
type: Document

Sage
type: Organization

Acta Radiologica
type: Collection
issn: 02841851

Judith Pantke
type: Person
given name: Judith
family name: Pantke

Tristan A Kuder
type: Person
given name: Tristan A
family name: Kuder

Heinz-Peter Schlemmer
type: Person
given name: Heinz-Peter
family name: Schlemmer

Theresa Mokry
type: Person
given name: Theresa
family name: Mokry

Hans-Ulrich Kauczor
type: Person
given name: Hans-Ulrich
family name: Kauczor

Sebastian Bickelhaupt
type: Person
given name: Sebastian
family name: Bickelhaupt

Frederik B Laun
type: Person
given name: Frederik B
family name: Laun

Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (Other)
type: Document
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Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (Other)
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Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (Other)
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Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (Other)
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Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI (Other)
type: Document
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primary topic: Influence of field strength on quantitative parameters and feature stability in the assessment of the ovaries using 1.5-T and 3-T MRI

610 Medizin
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preferred label: 610 Medical sciences Medicine @en