Grauhan, Nils F. ; Grünebach, Natascha ; Brockstedt, Lavinia ; Sanner, Antoine ; Feiweier, Thorsten ; Schöffling, Vanessa ; Brockmann, Marc A. ; Othman, Ahmed E. (2024)
Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging : A Prospective Study.
In: Clinical Neuroradiology : Official Journal of the German, Austrian, and Swiss Societies of Neuroradiology, 2024, 34 (1)
doi: 10.26083/tuprints-00028674
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Purpose: The aim of this study was to evaluate the image quality and feasibility of a field map-based technique to correct for susceptibility-induced geometric distortions which are typical for diffusion EPI brain imaging.
Methods: We prospectively included 52 patients during clinical routine in this single-center study. All scans were performed on a 3T MRI. Patients’ indications for MRI mainly consisted of suspected stroke due to the clinical presentation. For the morphological comparison of the corrected and uncorrected EPI diffusion, three experienced radiologists assessed the image quality of the sequences in a blinded and randomized fashion using a Likert scale (1 being poor; 5 being excellent). To ensure comparability of the two methods, an additional quantitative analysis of the apparent diffusion coefficient (ADC) was performed.
Results: Corrected EPI diffusion was rated significantly superior in all the selected categories: overall level of artifacts (p < 0.001), degree of distortion at the frontal, temporal, occipital and brainstem levels (p < 0.001), conspicuousness of ischemic lesions (p < 0.001), image quality (p < 0.001), naturality (p < 0.001), contrast (p < 0.001), and diagnostic confidence (p < 0.001).
Conclusion: Corrected EPI diffusion offers a significant reduction of geometric distortion in all evaluated brain regions and an improved conspicuousness of ischemic lesions. Image quality, overall artifacts, naturality, contrast and diagnostic confidence were also rated superior in comparison to uncorrected EPI diffusion.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Grauhan, Nils F. ; Grünebach, Natascha ; Brockstedt, Lavinia ; Sanner, Antoine ; Feiweier, Thorsten ; Schöffling, Vanessa ; Brockmann, Marc A. ; Othman, Ahmed E. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging : A Prospective Study |
| Sprache: | Englisch |
| Publikationsjahr: | 17 Dezember 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | März 2024 |
| Ort der Erstveröffentlichung: | Berlin ; Heidelberg |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Clinical Neuroradiology : Official Journal of the German, Austrian, and Swiss Societies of Neuroradiology |
| Jahrgang/Volume einer Zeitschrift: | 34 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.26083/tuprints-00028674 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/28674 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Purpose: The aim of this study was to evaluate the image quality and feasibility of a field map-based technique to correct for susceptibility-induced geometric distortions which are typical for diffusion EPI brain imaging. Methods: We prospectively included 52 patients during clinical routine in this single-center study. All scans were performed on a 3T MRI. Patients’ indications for MRI mainly consisted of suspected stroke due to the clinical presentation. For the morphological comparison of the corrected and uncorrected EPI diffusion, three experienced radiologists assessed the image quality of the sequences in a blinded and randomized fashion using a Likert scale (1 being poor; 5 being excellent). To ensure comparability of the two methods, an additional quantitative analysis of the apparent diffusion coefficient (ADC) was performed. Results: Corrected EPI diffusion was rated significantly superior in all the selected categories: overall level of artifacts (p < 0.001), degree of distortion at the frontal, temporal, occipital and brainstem levels (p < 0.001), conspicuousness of ischemic lesions (p < 0.001), image quality (p < 0.001), naturality (p < 0.001), contrast (p < 0.001), and diagnostic confidence (p < 0.001). Conclusion: Corrected EPI diffusion offers a significant reduction of geometric distortion in all evaluated brain regions and an improved conspicuousness of ischemic lesions. Image quality, overall artifacts, naturality, contrast and diagnostic confidence were also rated superior in comparison to uncorrected EPI diffusion. |
| Freie Schlagworte: | Diffusion-weighted imaging, Field map correction, Geometric distortion, Stroke imaging, Image quality |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-286749 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin, Gesundheit |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Graphisch-Interaktive Systeme |
| Hinterlegungsdatum: | 17 Dez 2024 13:05 |
| Letzte Änderung: | 16 Jan 2025 15:04 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging : A Prospective Study. (deposited 17 Dez 2024 13:05) [Gegenwärtig angezeigt]
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