Currently, the template utilized for needle guidance is limited to 0.5 centimeter x-axis and y-axis grid spacing, limiting the ability of the needle positions to conform to the shape of the prostate, which is spherical (Fig 1). The most commonly utilized method of dosimetric planning involves placing needles around the periphery of the prostate capsule, in order to best cover potential microscopic extracapsular extension as well as to avoid the dose sensitive urethra which runs through the center.9 The grid arrangement of the current template limits the ability of these needle positions to best approximate the external contour of the prostate (Fig 2). Also, placement of sources in the most posterior row adjacent to rectum is critical. Sources too close to rectum may cause increased risk of rectal bleeding, whereas source too far from the capsule may result in risk of underdosing disease in that area.10,11 Greater freedom in needle positioning would allow for more optimum placement of sources.