Improved visualisation of blood while wearing <scp>KTP</scp> laser protective eyewear using digital manipulation of endoscopic images: Seventeen surgeons experience on simulation testing

Ellis, Matthew; Foden, Neil; Han, Cheng; Almeyda, Robert

doi:10.1111/coa.12136

Cited by 1 publication

(2 citation statements)

References 9 publications

(15 reference statements)

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“…9,10 I-scan has been used to detect lung cancer 11 and for Barrett’s 12 and reflux esophagitis. 13 Ellis et al 2 described difficulty in discerning active bleeding during KTP nasal procedures due to KPE, then developed and validated a postcapture image enhancement filter with Adobe Photoshop. It is also of interest that chromoendoscopy filters have been used to evaluate the extent of laryngeal papillomatosis during 9 and prior to treatment 10 ; however, to our knowledge, no studies attempted to apply these filters during KTP laser treatment to enhance visualization of treatment changes.…”

Section: Discussionmentioning

confidence: 99%

“…KPE essentially filters all violet, blue, and green light and has been shown to cause blue-yellow and red-green color confusion. 1 Color confusion in the operating room that is associated with the use of KPE has been reported in the urology, 1 otolaryngology, 2 and anesthesiology 3 literature. No publications exist reporting color confusion in laryngeal KTP procedures.…”

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confidence: 99%

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Effect of Chromoendoscopy Filters on Visualization of KTP Laser–Associated Tissue Changes: A Cadaveric Animal Model

Johnson

Pate

Postma

2018

Otolaryngol.--head neck surg.

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Standard KTP laser (potassium titanyl phosphate) wavelength-specific protective eyewear often impairs visualization of tissue changes during laser treatment. This sometimes necessitates eyewear removal to evaluate tissue effects, which wastes time and poses safety concerns. The objective was to determine if "virtual" or "electronic" chromoendoscopy filters, as found on some endoscopy platforms, could alleviate the restricted visualization inherent to protective eyewear. A KTP laser was applied to porcine laryngeal tissue and recorded via video laryngoscopy with 1 optical (Olympus Narrow Band Imaging) and 8 digital (Pentax Medical I-scan) chromoendoscopy filters. Videos were viewed by 11 otolaryngologists wearing protective eyewear. Using a discrete visual analog scale, they rated each filter on its ability to improve visualization,. No filter impaired visualization; 5 of 9 improved visualization. Based on statistical significance, the number of positive responses, and the lack of negative responses, narrow band imaging and the I-scan tone enhancement filter for leukoplakia performed best. These filters could shorten procedure time and improve safety; therefore, further clinical evaluation is warranted.

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