Performance of EOS Imaging System in the Assessment of Spondyloarthritis Structural Changes Compared With Standard Radiography

Spondyloarthritis

spondyloarthritis, spine, syndesmophyte, radiography, EOS

Spondyloarthritis is a chronic rheumatic disease that requires prolonged radiographic follow-up. This repetitive exposure to ionizing radiation puts at risk the radiosensitive organs exposed in the field of irradiation. A new low-dose imaging system has emerged. This technique, called EOS, offers the advantage of lower irradiation associated with high images quality. Our goal through this work was to evaluate the reliability of the EOS imaging system compared to conventional radiography in the evaluation of the structural damage of SpA.

Spondyloarthritis (SpA) is a chronic inflammatory disease that can affect the sacroiliac joints, the spine and / or the peripheral joints. It is characterized by a progressive and slow evolution over several years with a risk of ankylosis of the spine. It requires long-term follow-up of patients with repeated x-rays to assess structural damage. This repeated and cumulative exposure to radiation ionization puts at risk the radiosensitive organs that are in the field of irradiation. EOS is a new low dose X-ray system that significantly reduces X-ray doses compared to conventional radiography. This system allows the global assessment of the entire skeleton from head to toe, static spine and lower limbs with the obtaining of two-dimensional images of high quality with the possibility of a three-dimensional reconstruction. Although the benefits of the EOS system are promising with regard to radiation dose reduction, few studies have investigated its use in SpA and little evidence has supported its reliability in assessing the structural damage caused by the disease.

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