CMI CMI Digital Media & Interactive Visualization

Question 1

In 3D medical animation, which rendering technique simulates light scattering through tissue for realistic skin appearance?

Accepted Answer

Subsurface scattering (SSS)

Answer

Subsurface scattering simulates how light penetrates and diffuses within translucent materials like skin and soft tissue, producing photorealistic rendering.

Question 2

Which file format is the standard container for 3D medical models used in interactive anatomical applications?

Accepted Answer

glTF/GLB

Answer

glTF (GL Transmission Format) is the modern standard for 3D content in web and interactive applications because it is compact, efficient, and supports materials and animations.

Question 3

In a medical animation pipeline, what does 'rigging' refer to?

Accepted Answer

Creating a skeletal armature to enable character or anatomical structure movement

Answer

Rigging creates a hierarchical skeleton of bones and controls that animators use to pose and move 3D anatomical models in a physically plausible way.

Question 4

Which web technology enables interactive 3D anatomical models to run directly in a browser without plugins?

Accepted Answer

WebGL/Three.js

Answer

WebGL is a browser API for GPU-accelerated 3D graphics; libraries like Three.js build on it to deliver interactive 3D medical visualizations without plugins.

Question 5

In medical AR/VR applications, what is the significance of 'frame rate' for surgical training simulations?

Accepted Answer

Rates below 60 fps can cause motion sickness and reduce training effectiveness

Answer

VR simulations must maintain at least 60–90 fps to prevent cybersickness; lower frame rates cause visual-vestibular conflict that impairs training and causes nausea.

(CMI) Certified Medical Illustrator Practice Test

(CMI) Certified Medical Illustrator Practice Test

CMI CMI Digital Media & Interactive Visualization