Mayumi Takeuchi1, Kenji Matsuzaki2, Masafumi Harada3. 1. Department of Radiology, University of Tokushima, 3-18-15, Kuramoto-cho, 7708503 Tokushima, Japan. Electronic address: mayumi@tokushima-u.ac.jp. 2. Department of Radiology, University of Tokushima, 3-18-15, Kuramoto-cho, 7708503 Tokushima, Japan; Department of Radiological Technology, Tokushima Bunri University, 1314-1, Shido, Sanuki-city, 769-2193 Kagawa, Japan. Electronic address: kenji@kgw.bunri-u.ac.jp. 3. Department of Radiology, University of Tokushima, 3-18-15, Kuramoto-cho, 7708503 Tokushima, Japan. Electronic address: masafumi@tokushima-u.ac.jp.
Abstract
PURPOSE: To evaluate the clinical diagnostic ability of computed diffusion-weighted imaging (DWI) for differentiating decidualized endometrioma from ovarian cancer. MATERIALS AND METHODS: Computed DWI technique was retrospectively applied to 20 mural nodules in 9 decidualized endometriomas during pregnancy and 20 ovarian cancers. Signal intensities on measured DWI with b values of 800s/mm(2) (DWI800) and on computed DWI with b values of 1500s/mm(2) (cDWI1500) were visually evaluated. RESULTS: Mural nodules of all decidualized endometriomas showed high signal intensity on DWI800 with significantly higher ADC (2.01±0.26×10(-3)mm(2)/s) and low signal intensity on cDWI1500, whereas solid components of all ovarian cancers showed high signal intensity on both DWI800 with lower ADC (1.08±0.20×10(-3)mm(2)/s) and on cDWI1500. CONCLUSION: Mural nodules in decidualized endometriomas may show high signal intensity on DWI800 due to T2 shine-through effect, and cDWI1500 can distinguish decidualized endometriomas from ovarian cancers by visual evaluation.
PURPOSE: To evaluate the clinical diagnostic ability of computed diffusion-weighted imaging (DWI) for differentiating decidualized endometrioma from ovarian cancer. MATERIALS AND METHODS: Computed DWI technique was retrospectively applied to 20 mural nodules in 9 decidualized endometriomas during pregnancy and 20 ovarian cancers. Signal intensities on measured DWI with b values of 800s/mm(2) (DWI800) and on computed DWI with b values of 1500s/mm(2) (cDWI1500) were visually evaluated. RESULTS: Mural nodules of all decidualized endometriomas showed high signal intensity on DWI800 with significantly higher ADC (2.01±0.26×10(-3)mm(2)/s) and low signal intensity on cDWI1500, whereas solid components of all ovarian cancers showed high signal intensity on both DWI800 with lower ADC (1.08±0.20×10(-3)mm(2)/s) and on cDWI1500. CONCLUSION: Mural nodules in decidualized endometriomas may show high signal intensity on DWI800 due to T2 shine-through effect, and cDWI1500 can distinguish decidualized endometriomas from ovarian cancers by visual evaluation.
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: Artur Czekierdowski; Norbert Stachowicz; Agata Smoleń; Tomasz Kluz; Tomasz Łoziński; Andrzej Miturski; Janusz Kraczkowski Journal: Diagnostics (Basel) Date: 2021-02-28