Description:
<jats:sec><jats:title>Purpose</jats:title><jats:p>To design and manufacture a pelvis phantom for magnetic resonance (MR)‐guided prostate interventions, such as MRGB (MR‐guided biopsy) or brachytherapy seed placement.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>The phantom was designed to mimic the human pelvis incorporating bones, bladder, prostate with four lesions, urethra, arteries, veins, and six lymph nodes embedded in ballistic gelatin. A hollow rectum enables transrectal access to the prostate. To demonstrate the feasibility of the phantom for minimal invasive MRI‐guided interventions, a targeted inbore MRGB was performed. The needle probe was rectally inserted and guided using an MRI‐compatible remote controlled manipulator (RCM).</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>The presented pelvis phantom has realistic imaging properties for MR imaging (MRI), computed tomography (CT) and ultrasound (US). In the targeted inbore MRGB, a prostate lesion was successfully hit with an accuracy of 3.5 mm. The experiment demonstrates that the limited size of the rectum represents a realistic impairment for needle placements.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>The phantom provides a valuable platform for evaluating the performance of MRGB systems. Interventionalists can use the phantom to learn how to deal with challenging situations, without risking harm to patients.</jats:p></jats:sec>