Video showing the laserscanning of the brooch:
https://www.youtube.com/watch?v=vF97kHaKAvc
Oval brooches of different types were worn in pairs by women during the Viking Age. These links show suggestions of how they were worn:
http://www.mynewsdesk.com/se/uu/images/pm_vikingakvinna1-5825
https://hantverkat.files.wordpress.com/2014/09/norrskensfesten-2011.jpg
The decoration of this particular brooch is made in the “Gripping beast style”.