Sagittal image

A sagittal image is obtained in a plane separating the right and left sides of the body. In spinal imaging, it displays several vertebrae in profile and helps locate discs, the spinal canal and spinal curves.

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Meaning on imaging

A sagittal image presents the spine in a side-on orientation. A midsagittal slice passes through the centre of the body, while neighbouring slices are parasagittal. A series of these images allows the reader to move across the width of the spine, from one side to the other.

Indications and assessment

This orientation helps identify vertebral levels, compare disc heights and follow the spinal canal over several segments. The image may come from an MRI acquisition or a CT reconstruction. The choice of examination depends on the clinical question, symptoms and information that could influence further management.

Limitations and interpretation

A single central slice may miss a finding situated farther to one side. The radiologist therefore reviews adjacent images and other sequences, including axial views. An image obtained while lying down does not fully describe standing balance. Finding a disc protrusion does not establish that it causes the pain.

Role of TAGMED care

At TAGMED, the radiology report can complement examination and discussion of symptoms. The presence of a sagittal image is not an indication for motorised decompression or another treatment. Care planning focuses on clinically relevant findings and appropriate medical referral when an abnormality requires further investigation.

Frequently asked questions

Is this a type of MRI?

It describes image orientation; different MRI sequences can use the same sagittal plane.

Does it show the whole spine?

Only the region covered by the examination; lumbar MRI does not necessarily include the neck.

Is one slice sufficient?

No. Adjacent images and the other imaging planes provide complementary information.

Does sagittal mean abnormal?

No. The word identifies a direction and does not express a diagnosis.

What should I ask at the appointment?

Ask which level is involved and whether the finding matches your symptoms and examination.

Educational information from The Spine Page. This entry does not replace an individual assessment. Documentary version: October 12, 2026. Sylvain Desforges, B.Sc., D.O., N.D., osteopath and naturopath.