2022年4月5日 · The basion-dens interval (BDI) 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.

The basion-dens interval (BDI) is the distance between two points in your neck: the basion and the tip of the dens. Doctors use this measurement to check for injuries in the neck area. The basion is a point at the base of your skull, and the dens is a projection of a bone in your neck. What can disturb the regular basion-dens interval (BDI)?

2025年2月9日 · The key to the diagnosis, in addition to identifying gross disruption of the normal alignment of the atlanto-occipital joint, hinges on using a number of lines on the lateral horizontal shoot-through cervical spine film 1: basion-dens interval (BDI) >10 mm in adults 3. basion-axial interval (BAI) >12 mm in adults

Atlanto-occipital dislocations (AODs) occur when there is severe damage to the ligaments that connect the skull to the cervical spine. The most common cause of an AOD is trauma. There are several classifications of atlanto-occipital dislocations.

2017年3月1日 · Atlantodental interval (ADI), basion-dental interval (BDI) and the thickness of prevertebral soft tissue (TOPST) measured in lateral cervical radiographs were reported to be useful indicators and indirect signs of underlying cervical spine injuries.

2015年1月1日 · The basion-dental interval (BDI) and basion-posterior axial line interval (BAI) are the most reproducible and reliable measurements of the upper cervical spine, although other measurements, such as Power’s ratio, Lee’s lines, McCrae’s line, and the Chamberlain line, are well described in the literature (Bono et al. 2007).

2017年12月1日 · The BDI is an important imaging parameter of a craniovertebral junction injury in adults on cervical spine CT. However, its use in pediatric patients is limited due to the variable appearance of the developing os terminale.

2021年4月3日 · Harris Lines (BAI and BDI) Harris lines are a common measurement used to diagnose potential occipitocervical dissociations on a lateral cervical spine radiograph. This was first described by Harris et al. They involve two measurements: the basion-dental interval (BDI) and the basion-axial interval (BAI).

2012年9月19日 · The basion-dens interval (BDI) is a parameter used to define the normal articulation between the occiput and the cervical spine. Measured on a midline sagittal image, the distance between the inferior tip of the basion and the …

2017年10月5日 · CONCLUSIONS: The basion–cartilaginous dens interval is a novel imaging parameter to assess cranioverterbral junction integrity in children, which includes the nonossified cartilage in the measurement. Received May 25, 2017; accepted after revision August 3.