Indocyanine green fluorescence angiography in colorectal surgery. First case series in Mexico

Elguea-Lizárraga, J.I. Ortiz de; Riojas-Garza, A.; Chapa-Lobo, Alberto Félix; Rangel-Ríos, H.A.; García-García, Ángel; Quevedo-Fernández, E.; Salgado-Cruz, L.E.

doi:10.1016/j.rgmxen.2021.10.001

Cited by 1 publication

(2 citation statements)

References 23 publications

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“…At this time, fluorescence is emitted by a chemical reaction in the tissue. Therefore, diffuse reflection and specular reflection correspond to the fluorescence emission wavelength band, not the LED irradiation wavelength band, as shown in Figure 6 a, i.e., the diffuse reflection and specular reflection generated by the chemical reaction of the fluorescent contrast agent as shown Figure 6 b [ 31 ].…”

Section: Analysis Of Fluorescence Emission and Specular Reflectionmentioning

confidence: 99%

“…This light reflection has a white light wavelength band. However, since the fluorescence expression observes the flow condition of the blood vessel, the light reflection due to the fluorescence expression obscures the field of view of the minute blood flow condition [ 31 ]. That is, since light reflection due to fluorescence expression appears in the form of a dot, it blocks the field of view for a minute blood flow condition, which can be very difficult to diagnose.…”

Section: Analysis Of Fluorescence Emission and Specular Reflectionmentioning

confidence: 99%

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Reduction of Specular Reflection Based on Linear Polarization Control for Fluorescence-Induced Diagnostic Evaluation

et al. 2022

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The primary goal of cancer surgery is to completely eliminate tumors. A real-time diagnostic method uses a fluorescence contrast agent and a surgical microscope to assess the status of tumor resection and the patient’s blood circulation. The biggest problem in imaging diagnostics using a microscope is the specular reflection phenomenon. While observing a lesion, the observation field may be obstructed due to specular reflection, making it difficult to obtain accurate results during the diagnostic process. Herein we propose a method to reduce specular reflection during tumor diagnosis by introducing a linearly polarized filter for a surgical microscope system. The method of angular direction adjustment of the filter ensures that only the horizontally polarized light passes through it, thereby obstructing the specular reflection. As a result of removing specular reflection, clear images were obtained at 90° and 270°. This experiment was conducted using phantoms and animals. Our results prove that the proposed method can be applied to imaging cameras used in internal medicine, surgery, and radiology for diagnosis.

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Section: Analysis Of Fluorescence Emission and Specular Reflectionmentioning

confidence: 99%

Section: Analysis Of Fluorescence Emission and Specular Reflectionmentioning

confidence: 99%

Reduction of Specular Reflection Based on Linear Polarization Control for Fluorescence-Induced Diagnostic Evaluation

et al. 2022

View full text Add to dashboard Cite

show abstract

Indocyanine green fluorescence angiography in colorectal surgery. First case series in Mexico

Cited by 1 publication

References 23 publications

Reduction of Specular Reflection Based on Linear Polarization Control for Fluorescence-Induced Diagnostic Evaluation

Reduction of Specular Reflection Based on Linear Polarization Control for Fluorescence-Induced Diagnostic Evaluation

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