Reduced and standard field-of-view diffusion weighted imaging in patients with rectal cancer at 3 T: comparison of image quality and apparent diffusion coefficient measurements
Purpose - To compare a zoomed EPI-DWI (z-EPI) with a standard EPI-DWI (s-EPI) in the primary diagnostics of rectal cancer and assess its potential of reduced image artifacts. - Method - 22 therapy-naïve patients with rectal cancer underwent rectal MRI at a 3 T-system. The protocols consisted of a z...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
October 2020
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| In: |
European journal of radiology
Year: 2020, Volume: 131, Pages: 1-8 |
| ISSN: | 1872-7727 |
| DOI: | 10.1016/j.ejrad.2020.109257 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.ejrad.2020.109257 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0720048X20304460 
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| Author Notes: | U.I. Attenberger, A. Tavakoli, D. Stocker, S. Stieb, O. Riesterer, M. Turina, S.O. Schoenberg, L. Pilz, C.S. Reiner |
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| 245 | 1 | 0 | |a Reduced and standard field-of-view diffusion weighted imaging in patients with rectal cancer at 3 T |b comparison of image quality and apparent diffusion coefficient measurements |c U.I. Attenberger, A. Tavakoli, D. Stocker, S. Stieb, O. Riesterer, M. Turina, S.O. Schoenberg, L. Pilz, C.S. Reiner |
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| 520 | |a Purpose - To compare a zoomed EPI-DWI (z-EPI) with a standard EPI-DWI (s-EPI) in the primary diagnostics of rectal cancer and assess its potential of reduced image artifacts. - Method - 22 therapy-naïve patients with rectal cancer underwent rectal MRI at a 3 T-system. The protocols consisted of a z-EPI DWI and s-EPI DWI sequence. Images were assessed by two independent and experienced readers regarding overall image quality and artifacts on a 5-point Likert scale, as well as overall sequence preference. In a lesion-based analysis, tumor and lymph node detection were rated on a 4-point Likert scale. Apparent diffusion coefficient (ADC) measurements were performed. - Results - Overall Image quality score for z-EPI and s-EPI showed no statistically significant differences (p = 0.80/0.54, reader 1/2) with a median score of 4 (“good” image quality) for both sequences. The image quality preference rank for z-EPI and s-EPI was given the category ‘no preference’ in 64 % (reader 1) and 50 % (reader 2). Most artifact-related scores (susceptibility, motion and distortion) did not show reproducible significant differences between z-EPI and s-EPI. The two sequences exhibited comparable, mostly good and excellent quality scores for tumor and lymph node detection (p = 0.19−0.99). ADC values were significantly lower for z-EPI than for s-EPI (p = 0.001/0.002, reader 1/2) with good agreement of ADC measurements between both readers. - Conclusion - Our data showed comparable image quality and lesion detection for the z-EPI and the s-EPI sequence in MRI of rectal cancer, whereas the mean ADC of the tumor was significantly lower in z-EPI compared to s-EPI. | ||
| 650 | 4 | |a ADC | |
| 650 | 4 | |a Diffusion weighted MRI | |
| 650 | 4 | |a DWI | |
| 650 | 4 | |a Rectal cancer | |
| 650 | 4 | |a Zoomed DWI | |
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| 700 | 1 | |a Stieb, Sonja |e VerfasserIn |4 aut | |
| 700 | 1 | |a Riesterer, Oliver |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Reiner, Caecilia Sophie |e VerfasserIn |4 aut | |
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