Related Experiment Video
Updated: Feb 12, 2026

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
Published on: December 4, 2016
Influence Factors on Contrast Agent Venous Intravasation During Transvaginal 4-Dimensional Hysterosalpingo-Contrast
Weiqun Wang1, Qiulan Zhou1, Xingxing Zhou1
1Department of Ultrasound Medicine, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
Objectives:
To explore the risk factors on contrast agent venous intravasation during transvaginal 4-dimensional hysterosalpingo-contrast sonography (TVS 4D-HyCoSy).
Methods:
The TVS 4D-HyCoSy imaging data were collected from 276 female infertile patients. The correlation between endometrial thickness, days after menstruation, intrauterine intervention history, fallopian tubal patency degree, and contrast agent venous intravasation, respectively, was analyzed.
Results:
In our study, the incidence of contrast agent venous intravasation was 13.04%. Endometrial thickness and days after menstruation were significantly associated with venous intravasation (P < .05). However, there was no significance for intrauterine intervention history and fallopian tube patency degree.
Conclusions:
Contrast agent intravasation during TVS 4D-HyCoSy is not infrequent. Performing TVS 4D-HyCoSy according to endometrial thickness and menstrual period could reduce intravasation incidence to some extent.
Related Concept Videos
Phase Contrast and Differential Interference Contrast Microscopy
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
Bioavailability: Influencing Factors
Factors Influencing Microbial Growth: pH
Factors Influencing Attraction I: Proximity
Factors Influencing Heart Rate
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Factors Influencing Attraction VI: Personality Traits

