Validity and reliability of visual assessment of orofacial muscle ultrasound images using a modified Heckmatt scale.
Marloes L J LagardeLenie van den Engel-HoekAlexander C H GeurtsNens van AlfenPublished in: Muscle & nerve (2023)
Both the original Heckmatt and the modified Heckmatt scale are valid and reliable tools for the visual grading of orofacial ultrasound images. The modified Heckmatt scale, with only three grades and including an "uncertain" category, is considered easier to use in clinical practice.