1. This figure presents a dual view of a conventional 2D image and VCI-A volume contrast imaging in plane A) still TIFF image generated from a 4D video sequence. This figure shows a fetal bladder with an ureterocele in it in a fetus at 23 weeks' gestation that was subsequently found to have a duplication of the collecting system in the left kidney. In (A) is a 2DUS image of the fetal bladder where the ureterocele walls and shape are not well depicted. In (B) is a VCI-A image composed of 2-mm thickness. The volume-derived VCI-A view by thickening the beam displays critical clinical information not adequately seen in this case with conventional 2DUS that prompted the operator to look further and find a duplication of the renal collecting system. Note the significantly improved contrast resolution along the ureterocele wall and fluid interfaces in window (B) not present in window (A) representing the 2D image on the left. Windows (C) and (D) are a VCI-C (volume contrast image in plane C) of the cervix at 22 weeks' gestation. Window (D) displays a coronal plane of the cervix showing the cervical canal. This plane is inaccessible with conventional 2D imaging. Since this is a 4D sequence the operator can scan with this mode to find the perfect midsagittal plane of the cervix using VCI-C as a reference, then, as desired, the beam can be reverted back to the 2D mode to record the cervical length. This same concept can be applied to scanning any midsagittal plane in obstetrics and gynecology.
Source: VOLUME SONOGRAPHY: CORE CONCEPTS FOR CLINICAL PRACTICE, Sonography in Obstetrics and Gynecology: Principles & Practice, 7e
Citation: Fleischer AC, Toy EC, Lee W, Manning FA, Romero RJ. Sonography in Obstetrics and Gynecology: Principles & Practice, 7e; 2014 Available at: Accessed: October 22, 2017
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