Tehran University of Medical Sciences Frontiers in Biomedical Technologies 2345-5837 7 4 2020 12 30 281 285 Zahra Tootoonchi Dallal Department of Medical Radiation Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran Somayeh Gholami Department of Radiation Oncology, Cancer Institute, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran Mehdi Salehi Barough Department of Medical Radiation Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran 2020 12 05 2021 01 07 Purpose: In this work, we have focused on fabrication and validation of a respiratory belt that produces respiratory signals from the patient’s abdominal and thorax. Materials and Methods: A load cell transducer was attached to the belt to create an electrical signal from respiratory movement. It converts a force or load into an equivalent electrical signal or digitized load value. The accuracy of the signals from our respiratory control belt was evaluated according to a comparison with the signals from commercial SOMNO medical device. Results: The pattern of the signals from our respiratory belt is  in good agreement (4%/3mm) with the pattern of commercial SOMNO medical device. Conclusion: The manufactured respiratory control belt can be used during imaging and radiotherapy procedures for breath control in a patient's abdominal and thorax region. https://fbt.tums.ac.ir/index.php/fbt/article/view/298