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- W2073635832 abstract "To demonstrate that some commercially available diagnostic inter-cavity probes can cause considerable temperature rise due to self-heating. A thermal test object (TTO) was developed to mimic a human body cavity. The TTO contained material with acoustic and thermal properties similar to those of soft biological tissues and its temperature was maintained at (37.0 ± 0.1)°C. A temperature logging system with small thermocouples (0.08 mm diameter) was used to monitor ambient and probe-in-air and probe-in-TTO surface temperatures for a 30 minute period. The settings of the diagnostic ultrasound scanners were adjusted to give the greatest acoustic output. So far 13 scanner/probe combinations from a range of different manufacturers have been assessed. Surface probes temperature rises were exponential with time, as expected. The maximum temperature rise of the probe surfaces in the TTO and air varied from (3.6 ± 0.3)°C to (10.3 ± 0.3)°C and from (36.9 ± 0.5)°C to (58.4 ± 0.7)°C respectively. The British Standard BS EN 60601-2-37 (2001) specifies that the surface temperature rise of the probe after 30 minutes should not be more than 6°C when in contact with tissue, and the maximum temperature should not be greater than 50°C in air. The survey shows that a number of probes tested exceed these limits. For the hottest probe a temperature rise of 6°C in TTO was attained after only 6 minutes." @default.
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- W2073635832 date "2004-08-01" @default.
- W2073635832 modified "2023-09-27" @default.
- W2073635832 title "OC084: A survey of temperature rise in diagnostic inter-cavity ultrasound probes due to self-heating" @default.
- W2073635832 doi "https://doi.org/10.1002/uog.1204" @default.
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