So-called type 1 and 2 uterine fibroids are well treatable with Magnetic Resonance guided
High Intensity Focused Ultrasound (MR-HIFU). The other type, type 3 fibroids, however, are
known for their high perfusion and poor treatment outcome after MR-HIFU. This study proposes
a new strategy to treat type 3 fibroids with MR-HIFU. Very precise, small, high-power
sonications (heating points) will be used to occlude (part of) the feeding vessels of the
fibroid. This deminishes the negative effect of the high perfusion and is hypothesized to
transform a type 3 fibroid into a type 2 or possibly even a type 1 fibroid. Consequently, the
bulk volume of the fibroid can be treated using the standard approach.