Ultrasound heating is curvilinear in nature and varies between transducers from the same manufacturer
Timothy J Demchak1, Stephen J Straub, Lennart D Johns
1Athletic Training Department, Indiana State University, Terre Haute, IN, USA. athdemch@isugw.indstate.edu
Context:
Ultrasound heating rates are known to differ between various manufacturers; it is unknown whether this difference exists within a manufacturer.
Objective:
Determine if intramuscular heating differences exist between transducers from the same manufacturer.
Study Design:
3 x 10 repeated measures. Independent variables were Transducer (A, B, and C) and Time (10-min time points during the treatment).
Setting:
Controlled laboratory.
Participants:
Twelve volunteers (M = 4, F = 8; age: 23 +/- 4 years; calf-girth: 37.94 +/- 4.16 cm; calf-skinfold: 27 +/- 17 mm).
Intervention:
Three 10-min 1MHz continuous ultrasound treatments performed at an intensity of 1.2 W/cm2, over an area 2x transducer.
Main Outcome Measures:
Calf temperature increase.
Results:
Heating curve generated for each transducer were significantly different (P = .034) but the overall temperature increases following 10 minutes of treatment were within 0.1 degree C (F = 1.023 P = .573).
Conclusion:
Heating curves differ between transducers from the same manufacturer but peak heating at 10 minutes was similar.
Related Concept Videos
Ultrasonography
During an ultrasonography procedure, a handheld device called a...
Ultrasound II: Endoscopic Ultrasound and FibroScan
Endoscopic Ultrasound (EUS):
Ultrasound I: Abdominal Ultrasonography
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Heating and Cooling Curves
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
Standing Waves in a Cavity
Imaging Studies II: Ultrasonography


