dilation

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dilation

[də′lā·shən]
(mathematics)
A transformation which changes the size, and only the size, of a geometric figure.
An operation that provides a relatively flexible boundary to a fuzzy set; for a fuzzy set A with membership function mA, a dilation of A is a fuzzy set whose membership function has the value [mA (x)]βfor every element x, where β is a fixed number that is greater than 0 and less than 1.
(science and technology)
The act or process of stretching or expanding.
References in periodicals archive ?
A total of 54 dilation interventions were performed in the 26 patients.
Balloon dilation was performed in all by insertion of an esophageal or bronchial balloon through the lumen of the rigid bronchoscope or the working channel of the flexible bronchoscope," Dr.
Physiologic changes in achalasia include failure of LES relaxation, esophageal aperistalsis, and eventual esophageal dilation.
Precise positioning: The unique center visual marker facilitates precise placement, positioning accuracy and assessment of the stricture during dilation.
Botulinum toxin injection into the LES is favored in patients who have failed multiple treatments with pneumatic dilation and/or LHM, and also in patients that are high-risk surgical candidates.
2) I began to fear that my chronic symptoms were caused by the dilations, instillations of silver nitrate (a caustic), and antibiotics.
Key Words: cricopharyngeal achalasia, esophageal dilation, weight loss
The steroid and sham injection groups were similar in terms of demographics, and all patients in both groups were treated with a proton pump inhibitor and underwent gradual dilation of the stricture using fluoroscopically-assisted balloon dilation over a guidewire every 4-6 weeks.
According to Entellus Medical CEO Brian Farley, "We are very pleased with how quickly the market has adopted the XprESS Multi-Sinus Dilation Tool.
In this study, long-term patency of immature tracheal stenosis was improved in 1 animal with the addition of subfreezing temperatures to endoscopic balloon dilation.
Probably what we should be doing is examining them a lot less frequently until they're 6 cm, and perhaps a little more frequently from 6 cm to complete" dilation, depending on whether or not there are other indications for examination, she said.