It is difficult to accurately locate the interventional devices because the high susceptibility of these devices leads to signal loss and distortion on magnetic resonance (MR) images. A positive contrast magnetic resonance imaging was developed to generate positive contrast of the brachy therapy seeds using a spin echo sequence with shifted 180° pulse and quantitative susceptibility mapping algorithm in 2014. In this paper, we further extended this method and applied it to visualize larger interventional devices (i.e., biopsy needle and vena cava filter) on Siemens MR scanner. The phantom experiment results demonstrate that the proposed method provided positive contrast images with good quality, and therefore improved the visualization and localization of the devices.