# User-friendly freehand ultrasound calibration using Lego bricks and automatic registration

> Research article (International Journal of Computer Assisted Radiology and Surgery, 2016) · cited 17× · AI/ML

**Wikidata**: [openalex:W2329944740](https://www.wikidata.org/wiki/openalex:W2329944740)  
**Source**: https://4ort.xyz/entity/user-friendly-freehand-ultrasound-calibration-using-lego-bricks-and-automatic-registration