Basion-dens interval
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The basion-dens interval (BDI), as the name suggests, is the distance between the basion and the tip of the dens, used in the diagnosis of atlanto-occipital dissociation injuries.
It is the distance from the most inferior portion of the basion to the closest point of the superior aspect of the dens in the median (midsagittal) plane.
Normal values are <12 mm on plain radiographs and <8.5 mm on CT 1.
See also
-<p>The <strong>basion-dens interval (BDI)</strong>, as the name suggests, is the distance between the <a href="/articles/basion">basion</a> and the tip of the <a href="/articles/axis-c2">dens</a>, used in the diagnosis of <a href="/articles/atlanto-occipital-dissociation-injuries">atlanto-occipital dissociation injuries</a>.</p><p>It is the distance from the most inferior portion of the basion to the closest point of the superior aspect of the dens in the median (midsagittal) plane.</p><p>Normal values are <12 mm on plain radiographs and <8.5 mm on CT <sup>1</sup>.</p><h4>See also</h4><ul><li><a href="/articles/basion-axial-interval-1">basion-axial interval</a></li></ul><p> </p>- +<p>The <strong>basion-dens interval (BDI)</strong>, as the name suggests, is the distance between the <a href="/articles/basion">basion</a> and the tip of the <a href="/articles/axis-c2">dens</a>, used in the diagnosis of <a href="/articles/atlanto-occipital-dissociation-injuries">atlanto-occipital dissociation injuries</a>.</p><p>It is the distance from the most inferior portion of the basion to the closest point of the superior aspect of the dens in the median (midsagittal) plane.</p><p>Normal values are <12 mm on plain radiographs and <8.5 mm on CT <sup>1</sup>.</p><h4>See also</h4><ul><li><a href="/articles/basion-axial-interval-1">basion-axial interval</a></li></ul>
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