Mount Sinai Hospital, Toronto 2 articles published in JoVE Cancer Research Magnetic Resonance-Guided High Intensity Focused Ultrasound Generated Hyperthermia: A Feasible Treatment Method in a Murine Rhabdomyosarcoma Model Claire Wunker1,2, Karolina Piorkowska3, Ben Keunen3, Yael Babichev2, Suzanne M. Wong3,4, Maximilian Regenold5, Michael Dunne5, Julia Nomikos1,2, Maryam Siddiqui6, Samuel Pichardo6, Warren Foltz7, Adam C. Waspe3,8, Justin T. Gerstle3,9, James M. Drake1,3,4,10, Rebecca A. Gladdy1,2,10 1Institute of Medical Science, University of Toronto, 2Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, 3The Wilfred and Joyce Posluns Centre for Image-Guided Innovation and Therapeutic Intervention, The Hospital for Sick Children, 4Institute of Biomedical Engineering, University of Toronto, 5Leslie Dan Faculty of Pharmacy, University of Toronto, 6Departments of Radiology and Clinical Neurosciences, University of Calgary, 7Department of Radiation Oncology, University of Toronto, 8Department of Medical Imaging, University of Toronto, 9Department of Pediatric Surgery, University of Toronto, 10Department of Surgery, University of Toronto Presented here is a protocol to use controlled hyperthermia, generated by magnetic resonance-guided high intensity focused ultrasound, to trigger drug release from temperature-sensitive liposomes in a rhabdomyosarcoma mouse model. Developmental Biology Contrast Imaging in Mouse Embryos Using High-frequency Ultrasound Janet M. Denbeigh1,2, Brian A. Nixon1,2, Mira C. Puri1,2,3, F. Stuart Foster1,2 1Department of Medical Biophysics, University of Toronto, 2Sunnybrook Research Institute, 3Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto Here, we present a protocol to inject ultrasound microbubble contrast agents into living, isolated late-gestation stage murine embryos. This method enables the study of perfusion parameters and of vascular molecular markers within the embryo using contrast-enhanced high-frequency ultrasound imaging.
