Title :
Computer-controlled dynamic phantom for ultrasound hyperthermia studies
Author :
Zaerr, Jon ; Roemer, Robert B. ; Hynynen, Kullervo
Author_Institution :
Arizona Univ., Tucson, AZ, USA
Abstract :
A dynamic phantom system for use in evaluating hyperthermia heating equipment has been designed, constructed, and tested. It consists of four in vitro preserved canine kidneys perfused with an 80% ethanol preparation by a single pump, plus four computer-controlled valves and four flow meters. The flow rate to each kidney is computer-controlled, giving flexibility in the types of spatial and temporal flow patterns possible. Examples are given for both step and ramp changes in flow, and for a temperature-dependent flow which has been used to simulate physiological responses to elevated temperatures.
Keywords :
biomedical equipment; biomedical ultrasonics; biothermics; computerised instrumentation; medical computing; computer-controlled phantom; computer-controlled valves; dynamic phantom system; ethanol; flow meters; in vitro preserved canine kidneys; physiological responses; spatial flow pattern; temporal flow pattern; Computational modeling; Ethanol; Heating; Hyperthermia; Imaging phantoms; In vitro; System testing; Temperature; Ultrasonic imaging; Valves; Animals; Dogs; Equipment Design; Hyperthermia, Induced; Kidney; Models, Biological; Models, Structural; Organ Preservation; Reproducibility of Results; Software;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
