scholarly journals Non-invasive temperature monitoring during microwave heating applying a miniaturized radiometer

10.5772/21574 ◽  
2011 ◽  
Author(s):  
Svein Jacobsen
Keyword(s):  
Microwave Heating ◽  
Temperature Monitoring ◽  
Non Invasive

Non-invasive Temperature Monitoring Using Small Coils During Radio-frequency Heating.

2001 ◽  
Vol 17 (1) ◽  
pp. 33-43
Author(s):  
TAKEO HASEGAWA ◽  
YEUN-HWA GU ◽  
HIROAKI USHIBA ◽  
KENSAKU HARA ◽  
SATORU ANDOU ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Temperature Monitoring ◽  
Radio Frequency Heating ◽  
Non Invasive ◽  
Frequency Heating

scholarly journals A prospective observational study testing liquid crystal phase change type thermometer placed on skin against oesophageal/pharyngeal placed thermometers in participants undergoing general anesthesia

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
G. Simpson ◽  
R. N. Rodseth
Keyword(s):  
Observational Study ◽  
Surface Temperature ◽  
General Anaesthesia ◽  
Prospective Observational Study ◽  
Standard Of Care ◽  
Skin Surface ◽  
Temperature Monitoring ◽  
Skin Surface Temperature ◽  
Limits Of Agreement ◽  
Non Invasive

Abstracts Background Patient outcomes are influenced by intraoperative temperature management. Oesophageal/pharyngeal temperature monitoring is the standard of care at our institute but is not well tolerated in awake patients. Many non-invasive temperature monitors have been studied. Only the TraxIt® Wearable Children’s Underarm Thermometer which contains liquid crystals that undergo phase changes according to temperature is available at our institution. We tested these non-invasive monitors against our standard of care which is the oesophageal/pharyngeal temperature monitor. Methods We conducted a prospective observational study of 100 patients receiving general anaesthesia for elective surgery. Patients were eligible for inclusion if they were ≥ 18 years old, were planned to have a general anaesthetic > 60 min during which no body cavity (chest or abdomen) would be opened. Patient temperature was measured with an oesophageal/pharyngeal thermistor probe and skin surface temperature monitors placed over the forehead, in the axilla, over the sternum, and behind the ear (over major vessels to the brain). Temperatures were recorded and then analysed using Altman-Bland plots. Pre-determined clinically relevant limits of agreement were set at −/+ 0.5 °C. Results From the 100 patients we collected 500 data points for each monitor with an average monitoring time of 102 min (30–300 min) across a range of surgical procedures. None of the skin surface temperature monitors achieved the pre-determined limits of agreement and results were impacted by the use of a forced air warmer. Conclusion The TraxIt® Wearable Children’s Underarm Thermometers are not suitable for temperature monitoring during general anaesthesia.

scholarly journals Intra-operative temperature monitoring with two non-invasive devices (3M Spoton® and Dräger Tcore®) in comparison with the Swan-Ganz catheter

2019 ◽  
Vol 26 (4) ◽  
pp. 191-196 ◽  
Author(s):  
F.J. Gómez-Romero ◽  
M. Fernández-Prada ◽  
F.E. Fernández-Suárez ◽  
C. Gutiérrez-González ◽  
M. Estrada-Martínez ◽  
...  
Keyword(s):  
Temperature Monitoring ◽  
Operative Temperature ◽  
Non Invasive

scholarly journals Non-invasive chemically specific measurement of subsurface temperature in biological tissues using surface-enhanced spatially offset Raman spectroscopy

2016 ◽  
Vol 187 ◽  
pp. 329-339 ◽  
Author(s):  
Benjamin Gardner ◽  
Nicholas Stone ◽  
Pavel Matousek
Keyword(s):  
Raman Spectroscopy ◽  
High Sensitivity ◽  
Biological Tissues ◽  
Temperature Monitoring ◽  
Subsurface Temperature ◽  
Non Invasive ◽  
Wide Range ◽  
Subsurface Monitoring ◽  
Mean Square Errors

Here we demonstrate for the first time the viability of characterising non-invasively the subsurface temperature of SERS nanoparticles embedded within biological tissues using spatially offset Raman spectroscopy (SORS). The proposed analytical method (T-SESORS) is applicable in general to diffusely scattering (turbid) media and features high sensitivity and high chemical selectivity. The method relies on monitoring the Stokes and anti-Stokes bands of SERS nanoparticles in depth using SORS. The approach has been conceptually demonstrated using a SORS variant, transmission Raman spectroscopy (TRS), by measuring subsurface temperatures within a slab of porcine tissue (5 mm thick). Root-mean-square errors (RMSEs) of 0.20 °C were achieved when measuring temperatures over ranges between 25 and 44 °C. This unique capability complements the array of existing, predominantly surface-based, temperature monitoring techniques. It expands on a previously demonstrated SORS temperature monitoring capability by adding extra sensitivity stemming from SERS to low concentration analytes. The technique paves the way for a wide range of applications including subsurface, chemical-specific, non-invasive temperature analysis within turbid translucent media including: the human body, subsurface monitoring of chemical (e.g. catalytic) processes in manufacture quality and process control and research. Additionally, the method opens prospects for control of thermal treatment of cancer in vivo with direct non-invasive feedback on the temperature of mediating plasmonic nanoparticles.

Non-invasive continuous cerebral temperature monitoring in patients treated with mild therapeutic hypothermia: An observational pilot study

Resuscitation ◽  
2010 ◽  
Vol 81 (7) ◽  
pp. 861-866 ◽  
Author(s):  
Andrea Zeiner ◽  
Jasper Klewer ◽  
Fritz Sterz ◽  
Moritz Haugk ◽  
Danica Krizanac ◽  
...  
Keyword(s):  
Pilot Study ◽  
Therapeutic Hypothermia ◽  
Temperature Monitoring ◽  
Mild Therapeutic Hypothermia ◽  
Non Invasive
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