Align

The HNA app opens to the first function tab, which is the Align tab. This provides a way to realign the volume if it wasn’t lined up precisely as desired during the scan procedure.

Register

If analyzing a Pre and Post intervention scan simultaneously, the next step is Register, which co-registers the Post volume to the Pre volume, so that meaningful comparisons can be made between the two scans before and after an intervention.

Visualize

The Visualize tab in the HNA module is designed to provide an assessment of the previous alignment step and to explore and record various visualizations or views of the subject.

Airway

The Airway tab in the HNA app is designed to provide an internal rendering or endoscopic view of the airway.

Measure

The Measure tab in the HNA app is designed to perform quantitative analysis of the head and neck, using standard Cephalometric landmarks, which are placed as points on the image.

Segment

The Segment tab in the HNA app is used to efficiently define the three most important regions of interest in head and neck analysis scans: soft tissue, bone, and airway. Once defined, the segmented objects are used to generate various renderings from a single scan or from pre and post interventions scans which can be combined to show changes that have taken place over time.

Segmentation Comparison

Selecting the Segmentation Comparison action button will display a selection of renderings generated from the two object maps that have been defined for the Pre and Post volumes. The Renderings section provides checkboxes to choose which comparison renderings to display.

Results

The Results tab in the HNA app provides documentation of the results from each of the previous tabs in the form of images, measurements and notes.