Table 1. Calculated contrast-to-noise ratio (CNR) for a region of interest (3rd row in Fig. 4 ▸) in a butterfly scale.
| Filter | CNR |
|---|---|
| Unfiltered | 2.6 |
| Median 3D filter | 3.1 |
| Iterative NLM filter | 3.3 |
| ML filter | 3.4 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.