Observer variability of absolute and relative thrombus density measurements in patients with acute ischemic stroke.

08:00 EDT 22nd October 2015 | BioPortfolio

Summary of "Observer variability of absolute and relative thrombus density measurements in patients with acute ischemic stroke."

Thrombus density may be a predictor for acute ischemic stroke treatment success. However, only limited data on observer variability for thrombus density measurements exist. This study assesses the variability and bias of four common thrombus density measurement methods by expert and non-expert observers.


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This article was published in the following journal.

Name: Neuroradiology
ISSN: 1432-1920


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Medical and Biotech [MESH] Definitions

The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).

The philosophical view that conceptions of truth and moral values are not absolute but are relative to the persons or groups holding them. (from American Heritage Dictionary of the English Language, 4th ed)

A measure of scientific precision, exactness, or correctness of quantitative or qualitative values, relative to the actual or true measurements.

A condition or factor associated with a recipient that makes the use of a drug, procedure, or physical agent improper or inadvisable. Contraindications may be absolute (life threatening) or relative (higher risk of complications in which benefits may outweigh risks).

Changes in the observed frequency of waves (as sound, light, or radio waves) due to the relative motion of source and observer. The effect was named for the 19th century Austrian physicist Johann Christian Doppler.

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