Ultrasound Muscle Thickness Evaluation
Ultrasound imaging was performed by using a high resolution ACUSON S
2000 ultrasound machine (Siemens, Munich, Germany) with a 9L4 Linear
Transducer. Measurements and analyses were performed by a single
radiologist with eight years of experience. Bilateral masseter muscles
were assessed in the resting position. During the USG procedure, the
head of the patients was adjusted according to the measured side. While
imaging, the probe was held perpendicular to the muscle mass and the
anterior-posterior direction thickness and muscle volume were measured
in transverse sections. Muscle thickness was measured from three
different points of the masseter muscle and the average of the three
measurements was taken and stored in USG machine pacs system for further
analysis.