E2046. The Role of Cinematic Rendering for the Evaluation of Lower Extremity Trauma
  1. Elliot Fishman; Johns Hopkins Hospital
  2. Jan Fritz; New York University Grossman School of Medicine
CT is the study of choice in the patient with lower extremity trauma. The ability to evaluate in a single exam the presence of skeletal trauma, muscle and soft tissue injury as well as vascular trauma in a single acquisition of 10-20 seconds has proven to be the study of choice for trauma. The challenge is that a scan from the iliac crest through the feet often is 2000-2500 individual scan slices. In addition a 3D view of bone, muscle and vessels is a more accurate mode of evaluation than trying to review axial or even coronal scans. Prior work with MIP and volume rendering has shown the value of a 3D approach. With the development of cinematic rendering the ability for accurate and rapid visualization has increased. In this exhibit we will define the role of cinematic rendering of vascular trauma. We will discuss acquisition protocols, as well as optimization of the cinematic rendering parameters for bone, muscle, soft tissue and vascular structures.

Educational Goals / Teaching Points
1. Understand the role of CT in lower extremity trauma and the need for 3D visualization 2. Understand the role of cinematic rendering for 3D visualization of lower extremity trauma 3. Understand how to optimize the cinematic rendering protocols to provide visualization of the bone, muscle, soft tissue and vascular components of trauma 4. Understand some of the potential pitfalls of cinematic rendering in the evaluation of musculoskeletal trauma

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
1. What is the optimal CT protocol for data acquisition for lower extremity trauma 2. What is the role of cinematic rendering in lower extremity trauma 3. What are the optimal displays of cinematic rendering for the analysis of musculoskeletal trauma 4. Understand some of the pitfalls including artifacts from gun shot wounds as well as acquisition timing

After review of the educational exhibit the radiologist (or resident or fellow) will understand the value of cinematic rendering for the evaluation of musculoskeletal trauma.