Comparison of modern 3D and 2D MR imaging sequences of the wrist at 3 tesla
Purpose: To compare the image quality of modern 3 D and 2 D sequences for dedicated wrist imaging at 3 Tesla (T) MRI. Materials and Methods: At 3 T MRI, 18 patients (mean age: 36.2 years) with wrist pain and 16 healthy volunteers (mean age: 26.4 years) were examined using 2 D proton density-weighted...
Gespeichert in:
| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
3 May 2016
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| In: |
RöFo
Year: 2016, Jahrgang: 188, Heft: 8, Pages: 753-762 |
| ISSN: | 1438-9010 |
| DOI: | 10.1055/s-0042-104512 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1055/s-0042-104512 Verlag, Volltext: http://www.thieme-connect.de/DOI/DOI?10.1055/s-0042-104512 
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| Verfasserangaben: | C. Rehnitz, B. Klaan, F. von Stillfried, E. Amarteifio, I. Burkholder, H.U. Kauczor, M.A. Weber |
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| 245 | 1 | 0 | |a Comparison of modern 3D and 2D MR imaging sequences of the wrist at 3 tesla |c C. Rehnitz, B. Klaan, F. von Stillfried, E. Amarteifio, I. Burkholder, H.U. Kauczor, M.A. Weber |
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| 520 | |a Purpose: To compare the image quality of modern 3 D and 2 D sequences for dedicated wrist imaging at 3 Tesla (T) MRI. Materials and Methods: At 3 T MRI, 18 patients (mean age: 36.2 years) with wrist pain and 16 healthy volunteers (mean age: 26.4 years) were examined using 2 D proton density-weighted fat-saturated (PDfs), isotropic 3 D TrueFISP, 3 D MEDIC, and 3 D PDfs SPACE sequences. Image quality was rated on a five-point scale (0 - 4) including overall image quality (OIQ), visibility of important structures (cartilage, ligaments, TFCC) and degree of artifacts. Signal-to-noise ratios (SNR) and contrast-to-noise ratios (CNR) of cartilage/bone/muscle/fluid as well as the mean overall SNR/CNR were calculated using region-of-interest analysis. ANOVA, paired t-, and Wilcoxon-signed-rank tests were applied. Results: The image quality of all tested sequences was superior to 3 D PDfs SPACE (p < 0.01). 3 D TrueFISP had the highest combined cartilage score (mean: 3.4) and performed better in cartilage comparisons against 3 D PDfs SPACE in both groups and 2 D PDfs in volunteers (p < 0.05). 3 D MEDIC performed better in 7 of 8 comparisons (p < 0.05) regarding ligaments and TFCC. 2 D PDfs provided constantly high scores. The mean overall SNR/CNR for 2 D PDfs, 3 D PDfs SPACE, 3 D TrueFISP, and 3 D MEDIC were 68/65, 32/27, 45/47, and 57/45, respectively. 2 D PDfs performed best in most SNR/CNR comparisons (p < 0.05) and 3 D MEDIC performed best within the 3 D sequences (p < 0.05). Conclusion: Except 3 D PDfs SPACE, all tested 3 D and 2 D sequences provided high image quality. 3 D TrueFISP was best for cartilage imaging, 3 D MEDIC for ligaments and TFCC and 2 D PDfs for general wrist imaging. Key points: 3 D TrueFISP is recommended for cartilage imaging of the wrist at 3 T. 3 D MEDIC is recommended for ligaments and TFCC. Robust 2 D PDfs should be used in routine protocols. 3 D sequences may be added depending on the clinical question. 3 D PDfs SPACE is currently inferior. Citation Format: Rehnitz C, Klaan B, von Stillfried F et al. Comparison of Modern 3D and 2D MR Imaging Sequences of the Wrist at 3 Tesla. Fortschr Röntgenstr 2016; 188: 753 - 762 | ||
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