Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Radiometry”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 73 records · Page 4Linked to original sources
PubMed1976

[Study of different states of iodine metabolism in rats by means of whole-body radiometry].

The authors present the principal concepts necessary for the use of the method of radiometry of the whole body in studying the iodine metabolism in vivo in the intact and thyroidectomized rats and also in experimental hyperthyroidism resulting from TTH or thyroidin administration. The iodine metabolism indices in euthyroidism and athyroidism in rats proved to be adequate to the corresponding curves of the iodine metabolism indices in healthy persons and those suffering from myxedema. Experimental hyperthyroidism in rats, similarly to hyperthyroidism in man, was characterized by an increase in tissue metabolism of the hormonal iodine. However, it was accompanied by an accelerated clearance of the organism from an excess of thyroid hormones; due to this it could not serve as an adequate model of thyrotoxicosis in man.

Animals↗
PubMed1976

[Application of infrared radiometry on the eye (author's transl)].

The non-contact determination of temperature by infrared radiometry allows the focal measuring of the surface temperature of the radiation source. In 119 patients the surface temperature in the middle of the cornea was measured by this method. The average temperatures were 33.50 degrees C (+/-0.91) in men and 33.74 degrees C (+/-0.91) in women. Further clinical testing is suggested first in diseases of the oculo-orbital region and secondly by means of a connected recorder to study the dynamic temperature reaction under the influence of different parameters.

Adolescent↗
PubMed2002

Measurement of the surface temperature of the cornea during ArF excimer laser ablation by thermal radiometry with a 15-nanosecond time response.

BACKGROUND AND OBJECTIVE: The purpose of this work was to develop a temperature measurement system with a nanosecond time response to monitor the transient temperature of the corneal surface during laser refractive surgery. MATERIALS AND METHODS: Thermal radiation from the surface of the porcine cornea during ArF excimer laser irradiation was measured using a photovoltaic HgCdTe detector with a response bandwidth of 150 MHz. RESULTS: Maximum thermal radiation occurred at 31 +/- 4 nanoseconds, which was longer than the time response of the measurement system. The temperature derived from the detected signal reached over 100 degrees C at a fluence of 80 mJ/cm(2), which was the ablation threshold, and reached 240 degrees C at a fluence of 180 mJ/cm(2). CONCLUSION: The present system of temperature measurement with a time response of 15.7 nanoseconds revealed that the transient surface temperature of the cornea during ablation is much higher than that previously reported.

Animals↗
PubMed1989

Infra-red surface thermography. Evaluation of a new radiometry instrument for measuring skin temperature over joints.

A study is reported of the evaluation of a new portable, light-weight, infrared thermometer, for the measurement of the skin temperature over joints. A high degree of reproducibility was observed, but no increase in heat was found over selected rheumatoid joints. The instrument will prove useful in detecting temperature changes in disease states where the changes are considerable, and where the ambient temperature can be strictly controlled.

Body Temperature↗