CT head reformat angles

Case contributed by Dr Jeremy Jones

Presentation

Fall from motorbike. Frontal bruising. Ensure no intracranial haemorrhage or fracture.

Patient Data

Age: 15
Gender: Male
Modality: CT

3 mm axial reformats in the original plane. e.g. the plane in which the patient was positioned.

Case Discussion

These images highlight the importance of correct reformat planes when viewing CT.

Increasingly, 1 mm isotropic datasets are transferred to PACS.

The unsuspecting clinician will be unaware of the differences that exist between the plane of acquisition (which may be variable and depends on head position) and the standard axial plane which is aligned to the anterior cranial fossa floor. 

The differences are subtle, but when we review these datasets it is important to know how to reformat the images into a standard plane to maximise the chance of correctly identifying pathology.

In general terms, the globes (lens) should be in the same slice as the dorsum sellae of sphenoid (or thereabouts).

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Case Information

rID: 48090
Case created: 18th Sep 2016
Last edited: 20th Sep 2016
Inclusion in quiz mode: Excluded

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