An imaging system includes a radiation source (110) that emits radiation that traverses an examination region and a detector (116) that detects radiation traversing the examination region and a subject disposed therein, and produces a signal indicative of the energy of the detected radiation. A data selector (122) energy discriminates the signal based on an energy spectra setting corresponding to first and second spectral characteristics of a contrast agent administered to the subject, wherein the contrast agent has a first attenuation spectral characteristic when attached to the target and a second different spectral characteristic when not attached to the target. A reconstructor (134) reconstructs the signal based on the first and second spectral characteristics and generates volumetric image data indicative of the target.

The present invention relates to a medical aid for intestine examinations, which can improve examination reliability by accurately and easily identifying intestinal transit time according to the lapse of time in the case of measuring/examining intestinal motility and thus can promote accurate diagnosis and prescription. Provided according to the present invention is a medical aid for intestine examinations, comprising: recording/measuring members, which comprise a polymer compound containing a radiopaque material and have different shapes; and a biodegradable accommodating body, which accommodates the recording/measuring members and comprises a biodegradable material.

A radiopaque component for an implantable device is provided herein. The radiopaque component comprises a plurality of radiopaque particles entrapped within a biostable and biocompatible binder. The radiopaque particles comprise at least 50% by weight of the radiopaque component.