Beam localization in HIFU temperature measurements using thermocouples, with application to cooling by large blood vessels

• Published in: Ultrasonics Vol. 51; no. 2; pp. 171 - 180
• Main Authors: Dasgupta, Subhashish, Banerjee, Rupak K., Hariharan, Prasanna, Myers, Matthew R.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2011; Elsevier
• Subjects: acoustics; Algorithms; Beam positioning error; Beams (structural); Biological and medical sciences; Blood flow; Blood flow cooling; blood vessels; cooling; Equipment Design; Errors; Exact sciences and technology; exposure duration; Gels; heat; HIFU; Humans; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Localization; Medical sciences; Models, Theoretical; Phantoms, Imaging; Physics; Position (location); Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects); Regional Blood Flow; Reproducibility of Results; shrinkage; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Technology. Biomaterials. Equipments. Material. Instrumentation; Temperature; temperature profiles; Thermal dose; Thermal instruments, apparatus and techniques; Thermocouple artifacts; Thermocouples; Thermometry; Transducers; Ultrasonic Therapy - adverse effects; Ultrasonic Therapy - methods; ultrasonics; Uncertainty; HIFU; Thermal dose; Thermocouple artifacts; Blood flow cooling; Beam positioning error; Uncertainty; Pipe flow; Temperature effect; Artefact; Acoustic beam; Wire; Convection; Transients; Uncertain system; Focusing; Blood vessel; Model test; Exposure time; Localization; Target detection; Transient response; Cooling; Ultrasonic treatment; Inference; Experimental study; Blood flow; Temperature measurement; Heat source; Power device; Ultrasonic transducer; Induced hyperthermia; Thermocouple

Experimental studies of thermal effects in high-intensity focused ultrasound (HIFU) procedures are often performed with the aid of fine wire thermocouples positioned within tissue phantoms. Thermocouple measurements are subject to several types of error which must be accounted for before reliable in...