One‐millimeter isotropic breast diffusion‐weighted imaging: Evaluation of a superresolution strategy in terms of signal‐to‐noise ratio, sharpness and apparent diffusion coefficient

Maya Delbany; Aurélien Bustin; Julie Poujol; Isabelle Thomassin‐Naggara; Jacques Felblinger; Pierre‐André Vuissoz; Freddy Odille

doi:10.1002/mrm.27591

journal article Dec 10, 2018

One‐millimeter isotropic breast diffusion‐weighted imaging: Evaluation of a superresolution strategy in terms of signal‐to‐noise ratio, sharpness and apparent diffusion coefficient

Maya Delbany Aurélien Bustin Julie Poujol Isabelle Thomassin‐Naggara Jacques Felblinger Pierre‐André Vuissoz Freddy Odille

Magnetic Resonance in Medicine Vol. 81 No. 4 pp. 2588-2599 · Wiley

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Abstract

PurposeTo quantitatively evaluate a superresolution technique for 3D, one‐millimeter isotropic diffusion‐weighted imaging (DWI) of the whole breasts.MethodsIsotropic 3D DWI datasets are obtained using a combination of (i) a readout‐segmented diffusion‐weighted‐echo‐planar imaging (DW‐EPI) sequence (rs‐EPI), providing high in‐plane resolution, and (ii) a superresolution (SR) strategy, which consists of acquiring 3 datasets with thick slices (3 mm) and 1‐mm shifts in the slice direction, and combining them into a 1 × 1 × 1‐mm3 dataset using a dedicated reconstruction. Two SR reconstruction schemes were investigated, based on different regularization schemes: conventional Tikhonov or Beltrami (an edge‐preserving constraint). The proposed SR strategy was compared to native 1 × 1 × 1‐mm3 acquisitions (i.e. with 1‐mm slice thickness) in 8 healthy subjects, in terms of signal‐to‐noise ratio (SNR) efficiency, using a theoretical framework, Monte Carlo simulations and region‐of‐interest (ROI) measurements, and image sharpness metrics. Apparent diffusion coefficient (ADC) values in normal breast tissue were also compared.ResultsThe SR images resulted in an SNR gain above 3 compared to native 1 × 1 × 1‐mm3 using the same acquisition duration (acquisition gain 3 and reconstruction gain >1). Beltrami‐SR provided the best results in terms of SNR and image sharpness. The ADC values in normal breast measured from Beltrami‐SR were preserved compared to low‐resolution images (1.91 versus 1.97 ×10–3 mm2/s, P = .1).ConclusionA combination of rs‐EPI and SR allows 3D, 1‐mm isotropic breast DWI data to be obtained with better SNR than a native 1‐mm isotropic acquisition. The proposed DWI protocol might be of interest for breast cancer monitoring/screening without injection.

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Details

Published: Dec 10, 2018
Vol/Issue: 81(4)
Pages: 2588-2599
License: View

Authors

M

Maya Delbany

IADI, INSERM U1254 and Université de Lorraine Nancy France

A

Aurélien Bustin

School of Biomedical Engineering and Imaging Sciences King’s College London London United Kingdom

J

Julie Poujol

IADI, INSERM U1254 and Université de Lorraine Nancy France

I

Isabelle Thomassin‐Naggara

Laboratoire de Recherche en Imagerie INSERM Université Paris Descartes, Sorbonne Paris Cité, PARCC UMR 970, Faculté de médecine

J

Jacques Felblinger

IADI, INSERM U1254 and Université de Lorraine Nancy France; CIC‐IT 1433, INSERM, CHRU de Nancy and Université de Lorraine Nancy France

P

Pierre‐André Vuissoz

IADI, INSERM U1254 and Université de Lorraine Nancy France

F

Freddy Odille

IADI, INSERM U1254 and Université de Lorraine Nancy France; CIC‐IT 1433, INSERM, CHRU de Nancy and Université de Lorraine Nancy France

Cite This Article

Maya Delbany, Aurélien Bustin, Julie Poujol, et al. (2018). One‐millimeter isotropic breast diffusion‐weighted imaging: Evaluation of a superresolution strategy in terms of signal‐to‐noise ratio, sharpness and apparent diffusion coefficient. Magnetic Resonance in Medicine, 81(4), 2588-2599. https://doi.org/10.1002/mrm.27591

One‐millimeter isotropic breast diffusion‐weighted imaging: Evaluation of a superresolution strategy in terms of signal‐to‐noise ratio, sharpness and apparent diffusion coefficient

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