# First Steps Toward Ultrasound-Based Motion Compensation for Imaging and Therapy: Calibration with an Optical System and 4D PET Imaging

> Research article (Frontiers in Oncology, 2015) · cited 10× · AI/ML

**Wikidata**: [openalex:W2189790613](https://www.wikidata.org/wiki/openalex:W2189790613)  
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