Tumur-Ochir Ganjiguur

Bio: Tumur-Ochir Ganjiguur is an academic researcher. The author has contributed to research in topics: Single umbilical artery. The author has an hindex of 1, co-authored 1 publications receiving 3 citations.

HDliveFlow with HDlive Silhouette Mode for Diagnosis of Persistent Right Umbilical Vein and Single Umbilical Artery

Abstract: We present our first experience using HDliveFlow with the HDlive silhouette mode for the diagnosis of a persistent right umbilical vein (PRUV) and single umbilical artery (SUA) in a fetus at 28 weeks and 5 days of gestation. Two-dimensional color Doppler showed a single left umbilical artery around the bladder, and PRUV originating from the umbilical cord. HDliveFlow with the HDlive silhouette mode clearly demonstrated SUA and PRUV, and the spatial connection of PRUV to the inferior vena cava through the ductus venosus was detected. The course of the fetal intra-abdominal vasculatures was clarified in detail. Moreover, visualization of the anatomical landmarks, such as the spine was possible using the HDlive silhouette mode. This technique might be a beneficial adjunctive tool for diagnosing fetal peripheral vascular anomalies with advantages over the use of conventional color Doppler alone.

Three-/Four-dimensional Ultrasound for the Assessment of Ovarian Tumors

Abstract: Ab s t r Ac t Background: Adnexal masses are a common clinical problem in gynecology. Most adnexal masses are benign, but few of them are malignant. An accurate diagnosis is essential for adequate management. There is a possibility to make a distinction between benign and malignant adnexal masses using two-dimensional grayscale ultrasound (2D-US) and color Doppler ultrasound, which are the best imaging techniques for that purpose. Objective: To review current state-of-art of 3D/4D ultrasound in assessing ovarian masses. Materials and methods: Narrative review of literature published from 1995 to 2017 using 3D/4D ultrasound for assessing adnexal masses masses. Results: Three-dimensional ultrasound (3D-US) has become a routine practice in many gynecologic ultrasound laboratories because it overcomes the limitations of two-dimensional ultrasound (2D-US). This technique allows a surface rendering of the internal aspect of the cyst’s wall. It can also present the masses in new different ways, such as “inversion mode” or “silhouette mode” or it can represent the vascular tree of the tumor using a 3D reconstruction, or even allowing a unique way for estimating the amount of vessels within the tumor or a part of the tumor. The reproducibility of 3D-US performed by different sonographers has been assessed in several studies. All of them have found that this technique is reproducible among different observers. The main limitations of all the studies are a few cases compared to the high prevalence of malignancies. Conclusion: 3D-US probably have better diagnostic performance than 2D-US assessing malignancies in adnexal masses. However, betterdesigned studies are needed to draw definitive conclusions.

HDliveFlow Silhouette Mode with HDlive Silhouette Mode for Diagnosis of Sclerosing Stromal Tumor of the Ovary

Abstract: We present our experience of using the HDliveFlow silhouette mode with HDlive silhouette mode to diagnose sclerosing stromal tumor (SST) of the ovary. Two-dimensional (2D) sonography showed an echogenic solid tumor with some anechoic areas inside the mass. Two-dimensional power Doppler depicted peripheral vascularity with a few central vessels inside the mass. HDliveFlow clearly showed abundant peripheral vascularization with several penetrating vessels (scrubbing-brush appearance). The HDliveFlow silhouette mode with HDlive silhouette mode revealed numerous peripheral vessels with some penetrating vessels and a few cysts inside the mass. Magnetic resonance imaging (MRI) was highly suggestive of SST. Laparoscopic right salpingo-oophorectomy was performed, and the histopathologic diagnosis was SST of the right ovary. The HDliveFlow silhouette mode with HDlive silhouette mode may facilitate the preoperative diagnosis of SST as an additional diagnostic tool along with conventional 2D power Doppler sonography.

HDlive Silhouette Features of Multicystic Dysplastic Kidney

Abstract: We present our experience of HDlive silhouette features of a fetal multicystic dysplastic kidney (MCDK) at 31 weeks and 1 day of gestation. Two-dimensional sonography revealed a left MCDK larger than the right normal kidney. HDlive silhouette showed multiple cysts of various sizes in the left big kidney on the left side of the spine. HDlive Flow with HDlive silhouette clearly demonstrated spatial relationships between bilateral kidneys and intra-abdominal vasculatures. HDlive silhouette may provide information on assessing the spatial recognition of fetal MCDK.