Background: In laparoscopic gastrointestinal surgery, the location of the tumor is identified mainly with marking methods, such as ink tattooing and intraoperative gastrointestinal endoscopy and marking with a metal clip followed by confirmation with intraoperative x-ray fluoroscopy. Each method has disadvantages, such as complexity, instability of ink sticks, and radiation exposure. Thus, a simple and less-invasive marking method is needed.
Methods: We developed a wireless light-emitting marker with a miniature light-emitting diode that uses a magnetic field resonance mechanism. It emits 4 individual colors-red, blue, green, and white. We confirmed the usefulness of this marker system in ex vivo and in vivo animal experiments.
Results: In the ex vivo experiment in porcine intestines, use of the wireless marker was successful, as each color of emitted light was recognized from outside the intestine. In the live animal experiment, it was confirmed that the light emitted by the marker system was visible in the porcine intestinal tract during laparoscopic surgery. The light emitted by the wireless marker in the intestinal tract was confirmed with a laparoscope in a simulated animal surgery.
Conclusion: We have developed an innovative, radiation-free and reliable light-emitting marker system that uses a magnetic field resonance mechanism that emits four colors of light during laparoscopic surgery.
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http://dx.doi.org/10.1097/SLE.0000000000000929 | DOI Listing |
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Physics, RTM Nagpur University, Nagpur 440033 India.
Luminescence of NaLaMgWO doped with lanthanide activators Tb, Eu and Er are reported. These activators exhibit characteristic emission spectra. Either the emission colour or the excitation spectrum distinguishes between these activators.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Military Institute of Engineering-IME, Department of Materials Science, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, RJ, Brazil.
Conjugated donor-acceptor (D-A) copolymers are widely used in optoelectronic devices due to their influence on the resulting properties. This study focuses on the synthesis and characterization of the conjugated D-A copolymer constructed with fluorene and di-2-thienyl-2,1,3-benzothiadiazole units, resulting in Poly[2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4,7-di(2-thienyl)-2,1,3-benzothiadiazole)] (PFDTBT). The synthesis associated with reaction times of 48 and 24 h, the latter incorporating the phase-transfer catalyst Aliquat 336, was investigated.
View Article and Find Full Text PDFEcotoxicol Environ Saf
December 2024
Centre de Recherche des Cordeliers, INSERM UMRS 1138, Université Paris Cité, Sorbonne Université. Team: Physiopathology of Ocular Diseases: Therapeutic Innovations. 15, rue de l'école de Médecine Paris 75006, France. Electronic address:
The exposure of the general population to artificial light at night has dramatically increased in recent decades. Current standards for domestic lighting are based on acute exposure to light and consider blue wavelengths to be responsible for phototoxicity. However, meta-analyses pointed out the role of lifelong light exposure in the onset of age-related macular degeneration, suggesting a cumulative effect of light exposure.
View Article and Find Full Text PDFPLoS One
November 2024
Department of Horticultural Science, North Carolina State University, Raleigh, NC, United States of America.
Lab Chip
November 2024
Department of BioNano Technology, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea.
Materials with high light-to-heat conversion efficiencies offer valuable strategies for remote heating. These materials find wide applications in photothermal therapy, water distillation, and gene delivery. In this study, we investigated a universal coating method to impart photothermal features to various surfaces.
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