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Figure 1 | Arthritis Research & Therapy

Figure 1

From: Conventional radiography requires a MRI-estimated bone volume loss of 20% to 30% to allow certain detection of bone erosions in rheumatoid arthritis metacarpophalangeal joints

Figure 1

The sensitivity of conventional radiography for detection of magnetic resonance imaging erosions. An OMERACT grade 1 erosion comprises 1% to 10% of the 'assessed bone volume', whereas OMERACT grade 2 and 3 erosions comprise 11% to 20% and 21% to 30%, respectively (see Materials and methods for a detailed description). OMERACT grade 4 to 10 erosions are erosions that occupy more than 31% of the 'assessed bone volume'. MCP, metacarpophalangeal joint.

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Arthritis Research & Therapy

ISSN: 1478-6362

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