Assessing the Effect of Packing the Sulcus on Image Quality in Equine Digital Radiography.

The research investigates the effectiveness of packing the sulcus in equine foot radiography to enhance diagnostic interpretation. It concludes that in most cases, packing does not significantly improve the quality of radiographic images.

Research Methodology

• The study involved photographing 23 cadaver equine limbs using a podoblock, a tool used for positioning equine limbs for radiographs.
• Two types of images were taken from each foot; a non-packed (NP) image and a packed (P) image.
• The quality of the packed images was assessed against the non-packed images by five separate observers.
• The observers graded the image quality on a scale that ranged from -1 to +1; where -1 was given if the packed image was of higher quality, 0 if there was no difference in image quality, and +1 if the non-packed image was superior.

Criteria Considered

• The study took into consideration four anatomical features for comparison of the images – the distal solar margin of the distal phalanx (DP), the vascular channels of the DP, the palmar aspect of the distal interphalangeal joint and the articulation of the navicular bone with the DP.

Findings

• The Visual Grading Analysis Score of 0.28 indicated a preference for the non-packed (NP) images over the packed (P) ones.
• Only in about 10.8 per cent of cases was packing found to be beneficial in enhancing image quality.

Conclusion

• The study concluded that routinely packing the sulcus in equine radiography does not significantly enhance the quality of images or the assessment of anatomical features. However, careful high-quality packing might be beneficial in a minority of cases.