Thomas Sartoretti1, Elisabeth Sartoretti2, Michael Wyss3, Árpád Schwenk4, Luuk van Smoorenburg5, Barbara Eichenberger6, Arash Najafi7, Christoph Binkert8, Anton S Becker9, Sabine Sartoretti-Schefer10. 1. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: thomas.sartoretti@uzh.ch. 2. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: elisabeth.sartoretti@uzh.ch. 3. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland; Philips Healthsystems, Zürich, Switzerland. Electronic address: michael.wyss@ksw.ch. 4. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: arpad.schwenk@ksw.ch. 5. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: hendricus.vansmoorenburg@ksw.ch. 6. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: barbara.eichenberger@ksw.ch. 7. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: arash.najafi@ksw.ch. 8. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: christoph.binkert@ksw.ch. 9. Institute of Diagnostic and Interventional Radiology, University Hospital Zürich, University of Zürich, Raemistrasse 100, CH-8091, Zürich, Switzerland; Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, USA. Electronic address: anton.becker@usz.ch. 10. Institute of Radiology, Kantonsspital Winterthur, Brauerstrasse 15, 8401, Winterthur, Switzerland. Electronic address: sabine.sartoretti@ksw.ch.
Abstract
PURPOSE: To compare image quality between a 2D T1w turbo spin echo (TSE) sequence and a Compressed SENSE accelerated 3D T1w black blood TSE sequence (equipped with a black blood prepulse for blood signal suppression) in pre- and postcontrast imaging of the pituitary and to assess scan time reductions. METHODS AND MATERIALS: For this retrospective study, 56 patients underwent pituitary MR imaging at 3T. 28 patients were scanned with the 2D- and 28 patients with the accelerated 3D sequence. Two board certified neuroradiologists independently evaluated 13 qualitative image features (12 features on postcontrast- and 1 feature on precontrast images).SNR and CNR measurements were obtained. Interreader agreement was assessed with the intraclass correlation coefficient while differences in scores were assessed with exact Wilcoxon rank sum tests. RESULTS: The interreader agreement ranged from fair (visibility of the ophthalmic nerve, ICC = 0.57) to excellent (presence and severity of pulsation artefacts, ICC = 0.97). The Compressed SENSE accelerated 3D sequence outperformed the 2D sequence in terms of "overall image quality" (median: 4 versus 3, p = 0.04) and "presence and severity of pulsation artefacts" (median: 0 versus 1, p < 0.001). There were no significant differences in any other qualitative and quantitative (SNR, CNR) image quality features. Scan time was reduced by 03:53 min (33.1%) by replacing the 2D with the 3D sequence. CONCLUSION: The Compressed SENSE accelerated 3D T1w black blood TSE sequence is a reliable alternative for the standard 2D sequence in pituitary imaging. The black blood prepulse may aid in suppression of pulsation artefacts.
PURPOSE: To compare image quality between a 2D T1w turbo spin echo (TSE) sequence and a Compressed SENSE accelerated 3D T1w black blood TSE sequence (equipped with a black blood prepulse for blood signal suppression) in pre- and postcontrast imaging of the pituitary and to assess scan time reductions. METHODS AND MATERIALS: For this retrospective study, 56 patients underwent pituitary MR imaging at 3T. 28 patients were scanned with the 2D- and 28 patients with the accelerated 3D sequence. Two board certified neuroradiologists independently evaluated 13 qualitative image features (12 features on postcontrast- and 1 feature on precontrast images).SNR and CNR measurements were obtained. Interreader agreement was assessed with the intraclass correlation coefficient while differences in scores were assessed with exact Wilcoxon rank sum tests. RESULTS: The interreader agreement ranged from fair (visibility of the ophthalmic nerve, ICC = 0.57) to excellent (presence and severity of pulsation artefacts, ICC = 0.97). The Compressed SENSE accelerated 3D sequence outperformed the 2D sequence in terms of "overall image quality" (median: 4 versus 3, p = 0.04) and "presence and severity of pulsation artefacts" (median: 0 versus 1, p < 0.001). There were no significant differences in any other qualitative and quantitative (SNR, CNR) image quality features. Scan time was reduced by 03:53 min (33.1%) by replacing the 2D with the 3D sequence. CONCLUSION: The Compressed SENSE accelerated 3D T1w black blood TSE sequence is a reliable alternative for the standard 2D sequence in pituitary imaging. The black blood prepulse may aid in suppression of pulsation artefacts.
Authors: Thomas Sartoretti; Elisabeth Sartoretti; Michael Wyss; Manoj Mannil; Luuk van Smoorenburg; Barbara Eichenberger; Carolin Reischauer; Alex Alfieri; Christoph Binkert; Sabine Sartoretti-Schefer Journal: Br J Radiol Date: 2021-02-17 Impact factor: 3.039
Authors: Thomas Sartoretti; Elisabeth Sartoretti; Árpád Schwenk; Luuk van Smoorenburg; Manoj Mannil; André Euler; Anton S Becker; Alex Alfieri; Arash Najafi; Christoph A Binkert; Michael Wyss; Sabine Sartoretti-Schefer Journal: PLoS One Date: 2020-04-29 Impact factor: 3.240
Authors: Victoria Y Yu; Kristen Zakian; Neelam Tyagi; Minsi Zhang; Paul B Romesser; Alex Dresner; Laura Cerviño; Ricardo Otazo Journal: Adv Radiat Oncol Date: 2021-09-09
Authors: Elisabeth Sartoretti; Thomas Sartoretti; Árpád Schwenk; Alex Alfieri; David Czell; Michael Wyss; Lukas Wildi; Christoph A Binkert; Sabine Sartoretti-Schefer Journal: Tomography Date: 2022-01-24
Authors: Elisabeth Sartoretti; Michael Wyss; Alex Alfieri; Christoph A Binkert; Cyril Erne; Sabine Sartoretti-Schefer; Thomas Sartoretti Journal: Sci Rep Date: 2021-06-07 Impact factor: 4.379