# Ultrasound Animal Challenge 1 – Answer

## Metadata
- Content type: Blog
- Canonical URL: https://123sonography.com/blog/ultrasound-animal-challenge-1-answer
- Published: September 8, 2022
- Last updated: November 14, 2024

## Overview
The Tiger-stripe sign (also called Zebra sign) can be seen on Doppler as reputative high amplitude parallel signals.

## Snapshot
- Category: Cases

## Authors
- [Univ. Prof. Dr. Thomas Binder](/speaker/146) - Medical University of Vienna and founder/CMO 123Sonography, Webinar Moderation

## Tags
- Ultrasound Loop

## Content
The correct answer to the question "What is the Tiger-stripe sign?" is:

## B) A high amplitude Doppler signal caused by oscillating structures

![Tiger stripe Doppler.](https://123sonography.com/sites/default/files/2024-11/tiger-stripe-doppler.jpg)The Tiger-stripe sign (also called Zebra sign) can be seen on Doppler as reputative high amplitude parallel signals. They are typically seen in the presence of high oscillating structures (masses, cords or valves). Flail leaflets with mitral regurgitation is a common cause of the Tiger stripe sign. You can also hear the oscillation of your stethoscope (or with Doppler). The sound resembles the cry of a seagull.

**Yours,**
**Thomas Binder and the 123sonography team**