Magnetic Resonance Imaging in Subjects With Gouty Tophi

A Study to Validate Magnetic Resonance Imaging (MRI) in the Quantitative Assessment of Gouty Tophi.

The purpose of this study is to determine the reproducibility of Magnetic Resonance Imaging (MRI) in the quantitative assessment of tophus volume.

This is a multi-center, validation study of MRI in the quantitative assessment of gouty tophi. Subjects with palpable gouty tophi (confirmed by aspiration of the tophus) in select anatomical sites (foot, hand or elbow) will undergo pre- and post contrast MRI on two occasions separated by 5 to 10 days. This study will consist of up to 4 study visits.

Inclusion Criteria:

• Subjects with gout and at least one tophi.

Exclusion Criteria:

• Unable to undergo MRI.