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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

2.1K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
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Temperature Measurement Sites01:14

Temperature Measurement Sites

4.2K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
4.2K
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

6.1K
Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
6.1K
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

1.3K
Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
1.3K
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

16.4K
Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
16.4K
Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

1.6K
Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
1.6K

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Related Experiment Video

Updated: Apr 27, 2026

Fabrication and Testing of Photonic Thermometers
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Fabrication and Testing of Photonic Thermometers

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CT-based thermometry: an overview.

F Fani1, E Schena, P Saccomandi

  • 1Unit of Measurements and Biomedical Instrumentation, Center for Integrated Research, Università Campus Bio-Medico di Roma , Via Álvaro del Portillo, Rome , Italy.

International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group
|June 26, 2014
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) thermometry offers non-invasive temperature mapping for thermal treatments. This technique helps protect healthy tissues and improve treatment effectiveness by providing detailed temperature distributions.

Keywords:
CT scannerCT-based thermometrycalibrationnoninvasive thermometrythermal ablation

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Area of Science:

  • Medical Physics
  • Radiology
  • Biomedical Engineering

Background:

  • Computed Tomography (CT) values are temperature-dependent, impacting scanner calibration since the 1970s.
  • CT thermometry emerged as a potential non-invasive method for temperature mapping during thermal procedures.
  • Renewed interest in CT thermometry is driven by advancements in CT scanner technology and the rise of minimally invasive cancer treatments.

Purpose of the Study:

  • To review the fundamental physics and current data regarding CT-based thermometry.
  • To explore the potential applications of CT thermometry in thermal procedures.
  • To provide background on the measurement principles and discuss performance and thermal sensitivity of CT numbers in various organs.

Main Methods:

  • Review of existing literature on CT thermometry.
  • Analysis of the physical principles underlying CT value dependence on temperature.
  • Investigation of CT scanner performance and thermal sensitivity of CT numbers across different organs.

Main Results:

  • CT thermometry is a viable non-invasive technique for monitoring temperature during thermal therapies.
  • Accurate temperature mapping is crucial for preventing damage to healthy tissues and enhancing treatment efficacy.
  • The review synthesizes data on performance and organ-specific thermal sensitivity of CT numbers.

Conclusions:

  • CT thermometry holds significant potential for guiding and optimizing thermal treatments, particularly in oncology.
  • Understanding the thermal sensitivity of CT numbers is key to accurate non-invasive temperature assessment.
  • Further research and development can enhance the clinical utility of CT thermometry in thermal medicine.