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- W2039918211 abstract "To evaluate the accuracy of imaging the internal os of the cervix via the volume derived coronal plane of the lower uterine segment (LUS) in difficult clinical scenarios. Stored transvaginal 3D volume ultrasound scans of the LUS from a selected group of difficult clinical scenarios from January 2004 to February 2008 were evaluated for their ability to adequately identify the internal os when it was impossible via the conventional 2D ultrasound. The equipment used was a transvaginal volume probe of 10 MHz (Voluson 730 Expert, GE). All 3D volumes were acquired by a single experienced operator in both 2D and 3D imaging. A total of 493 volumes in 206 exams out of 155 patients were identified. Of the total 206 exams, 88/206 exams (42%) were identified as having an inadequate visualization of the internal os on the conventional sagital plane of the cervix. Of these 88 exams with inadequate visualization of the internal os, 45/88 exams (51%) had a LUS contraction present, and 43/88 exams (49%) had placenta previa (PP) over the internal os, among which 8/88 exams (9%) had both PP and LUS contraction present. Visualization of the internal os via the volume derived multiplanar coronal plane was successful in 86/88 exams (97.7%) and not successful in 2/88 exams (2.3%), in which one exam had a severe LUS contraction and the other had a total PP projecting multiple shadows over the internal os. Severe LUS contraction or PP may make the identification of the internal os of the cervix not accurate when using only sagital planes for visualization. This may lead to longer estimations of the cervical length. Volume derived transvaginal coronal imaging of the lower uterine segment, by its unique ability in visualizing the cervical canal, appears to be a novel and useful technique in identifying the internal os of the cervix in difficult clinical scenarios." @default.
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- W2039918211 date "2008-08-01" @default.
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- W2039918211 title "OC044: Volume derived coronal imaging of the lower uterine segment, a novel technique to accurately identify the internal os of the cervix in difficult clinical scenarios" @default.
- W2039918211 doi "https://doi.org/10.1002/uog.5452" @default.
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