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Proceedings Paper

Microfrabricated instrument tag for the radiographic detection of retained foreign bodies during surgery
Author(s): Anurag Tripathi; Theodore C. Marentis; Nikos Chronis
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Paper Abstract

Gossypibomas are foreign objects, usually surgical sponges or towels, accidentally retained in the human body during an operation. They are associated with significant postsurgical complications, morbidity and mortality. Postsurgical radiographs are considered the standard of care for a retained foreign body, but their detection sensitivity typically ranges between 60% and 80%. To address this we have microfabricated x-ray visible microtags that can be attached to foreign bodies and allow them to be easily recognized by a trained radiologist or a computer aided detection (CAD) algorithm. Key element of the microtag design is the use of three radiopaque beads placed in a precise, triangular configuration. We demonstrated that those microtags are visible in standard radiographs over different backgrounds (soft tissue, bone) and at different spatial orientations. We envision that these microtags attached to surgical sponges and towels will greatly increase the detection sensitivity and specificity of gossypibomas at an infinitesimal cost and will be used in the operating room to provide point of care information to the surgeons.

Paper Details

Date Published: 3 March 2012
PDF: 8 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83134H (3 March 2012); doi: 10.1117/12.910757
Show Author Affiliations
Anurag Tripathi, Univ. of Michigan (United States)
Theodore C. Marentis, Univ. of Michigan (United States)
Nikos Chronis, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)

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