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10. Appendices > 10.2. Temperature conversion
10.2. Temperature conversion
The success of a HIFU treatment depends on the correct starting temperature. Conversion
formulas and tables from and to other temperature scales are given here.
Conversion from Fahrenheit scale to Celsius scale:
= (T
− 32) × 5 ⁄ 9
T
C
F
Conversion from Celsius scale to Fahrenheit scale:
T
= (T
× 9 ⁄ 5) + 32
F
C
Conversion for temperature differences from Fahrenheit to Celsius:
− T
= (T
T
C2
C1
Conversion for temperature differences from Celsius to Fahrenheit:
− T
= (T
T
F2
F1
Conversion from Kelvin scale to Celsius scale:
= T
+ 273
T
C
K
The table below shows some temperature limits that are relevant to the HIFU treatment:
Tab. 30: Temperature limits.
Temperature
Freezing point of water
Normal body temperature
Reversible tissue damage in 1 minute
Necrosis of tissue in less than 3 seconds
Proteins denaturate
Maximum allowed treatment temperature
Boiling point of water
10.3. Comparing thermal dose volumes and non-
perfused volumes
10.3.1. Estimating thermal dose volumes
The software automatically estimates the thermal dose volume and heating dimensions. You can
check the thermal dose volume and the heating dimensions of the single cell from the Analysis
tab.
Instructions for Use
109745C2 / 02-2022
− T
) × 5 ⁄ 9
F2
F1
− T
) × 9 ⁄ 5
C2
C1
Celsius
Fahrenheit
0
32
37
99
47
117
55
131
70
158
85
185
100
212
Kelvin
273
310
320
328
343
358
373
161 (192)
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