| http://www.w3.org/ns/prov#value | - While the marker device will be described in use in a medical environment, it should be appreciated that the device can also be utilized in an industrial environment or any other environment in which a tubular body needs to be inserted inside another body and the location of the tubular body as well as its rotational orientation within the other body needs to be imaged with X-rays such as on X-ray
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