EOS imaging

Principle and interpretation

It is used particularly for spinal deformity and spinopelvic balance assessment. Standing position may provide information different from supine MRI.

Indications, limitations and precautions

EOS uses x-rays: reduced dose does not mean no radiation. It does not replace MRI for detailed cord and soft-tissue assessment; appropriateness depends on the question.

Points to consider

An investigation is selected to answer a specific question about bone, neural tissue, metabolic activity or vessels, for example. Techniques provide different information. Preparation and precautions vary by protocol; follow the imaging service’s instructions.

Role of TAGMED care

At TAGMED, assessment aims to understand symptoms, history and functional limitations. Manual care and osteopathy, motorized spinal decompression, laser and shockwave have different indications. The term described in this entry is not enough to select any of these modalities. Their relevance, limitations and possible contraindications should be discussed in relation to diagnosis and individual goals.

Related concepts and distinctions

These concepts belong to the same field, but are not synonyms.

• PET-CT — Hybrid examination combining positron emission tomography with CT to link molecular or metabolic information with anatomical location.
• Multiplanar reconstruction — Processing of an imaging volume to display slices in different planes without necessarily obtaining a new acquisition.
• SPECT-CT — Hybrid examination combining single-photon emission computed tomography with CT to anatomically localize radiotracer uptake.

Medical references

1. Hospital for Special Surgery. EOS imaging.
2. Radiological Society of North America. RadLex Radiology Lexicon — terminology resource.

References document the topic; their inclusion does not imply endorsement of TAGMED services by those organizations.