The use of computed tomographic three-dimensional reconstructions to develop instructional models for equine pelvic ultrasonography.

This research article discusses how ultrasound technology can be used to diagnose pelvic fractures in horses, and how three-dimensional (3D) simulations can aid in better understanding the pelvic structures when translated into two-dimensional (2D) images.

Understanding the Research

The study focuses on developing instructional models using 3D simulations of pelvic ultrasonographic examinations to enhance the analysis of pelvic structure in horses. The aim is to improve the usage of ultrasonography to diagnose pelvic fractures in horses.

• The research involves studying images acquired through computed tomography (CT) of an equine femur and hemipelvis using a single slice helical scanner. This enables the researchers to study the internal structure and contours of the horse’s pelvis, which can be difficult to understand from external examination.
• The acquired images were used to create 3D surface models using a DICOM reader and then imported into a 3D modeling and animation program. This process was aimed at visualizing the pelvic surface contours more accurately.
• The researchers used photographs of ultrasound transducers to create 3D models and then simulated the ultrasound beam using a thin sector shape. The process aimed to produce images of pelvic structures by moving the transducers on the skin surface and inside the rectum.
• The study also involved manipulating camera angles to best illustrate the interface between the transducer, the ultrasound beam, and the bone.
• Fractures were introduced in multiple configurations, to simulate different types of potential injuries. The animations were then exported as QuickTime movie files for use in presentations along with corresponding ultrasound video clips.

Significance of the Study

The 3D models developed by this research are significant as they bridge the gap between the ultrasonographic technique and image creation.

• Note that these models illustrate the interaction between the transducer, the ultrasound beam, and the structure being examined, which is crucial for understanding and diagnosing potential fractures.
• The 3D horse model is essential to understand the location of pelvic structures relative to the skin surface. This information is crucial in positioning the ultrasound transducer accurately for the best image generation and diagnosis.
• Despite the relatively brief time required for CT image acquisition, creating and manipulating the models within 3D software was time-consuming. However, based on user feedback, the results were deemed worthwhile from an educational perspective, suggesting that these models could be a beneficial teaching tool.