The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform
Daniel Rozban - One of the best experts on this subject based on the ideXlab platform.
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Polarization effects on heterodyne detection and imaging using Glow Discharge Detector at millimeter wavelengths
Passive and Active Millimeter-Wave Imaging XVII, 2014Co-Authors: A. Akram, Norman S. Kopeika, Daniel Rozban, Amir Abramovich, Niv Banay, Assaf LevanonAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. Polarization effects on heterodyne detection were investigated in this work. In heterodyne detection, because of the dot product relationship between signal electric field (ES) and local oscillator (LO) electric field (Elo), optimal operation of heterodyne detection is obtained when ES and Elo are of the same polarization. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the LO power (Plo) is increased. In this work investigation of polarization effects in heterodyne detection using neon Indicator Lamp GDD was carried-out. Experimental results of heterodyne detection at 300 GHz showed that an intermediate frequency (IF) signal was obtained for orthogonal polarization of the LO and signal, in contradiction to the theory. Also, our latest imaging results using Glow Discharge Detector at millimeter wavelengths will be shown in this work.
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Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors
IEEE Sensors Journal, 2014Co-Authors: Assaf Levanon, Norman S. Kopeika, Daniel Rozban, Yitzhak Yitzhaky, Amir AbramovichAbstract:We have developed focal plan array (FPA) imagers based on very inexpensive miniature neon Indicator Lamp detectors called glow discharged detectors (GDDs). The novelty of this paper is a technique of calibration, which permits reliable imaging with such an inexpensive FPA. GDDs are commercial Lamps, which lack uniformity as detectors. The technique developed in this paper cancels out differences in response between the FPA Lamps caused by both nonuniformity of the MMW collimated beam, and nonuniformity of the GDDs and other components in the electronic circuit. Utilizing this method in the new imaging system unifies detector response. Results, shown with two types of sensor configurations (8 × 8 and 18 × 2 scanner array), indeed show better performances and improvement in visibility of details.
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Oversampling advances in millimeter-wave scan imaging using inexpensive neon Indicator Lamp detectors
Optical Engineering, 2013Co-Authors: Assaf Levanon, Norman S. Kopeika, Avihai Aharon, Daniel Rozban, Amir Abramovich, Yitzhak Yitzhaky, H. Joseph, A. Belenky, Michael Gefen, Orly Yadid PechtAbstract:In recent years, much effort has been invested to develop room temperature inexpensive, but sensitive, millimeter wave (MMW) and terahertz (THz) detectors that can be used as pixels in focal plane arrays, which is important for real-time imaging. A new 18×2 neon Indicator Lamp MMW/THz scanner was developed. The components of the camera include horizontally shifted two-column glow discharge detectors in a scanning array. The detectors, costing about 50 cents each, are wired to a preprocessing card, a VLSI board, and a motor for scanner movement. A description of the VLSI Verilog programmable hardware of the new scanner, the physical architecture, the software user interface, and imaging results at 97 GHz are presented. At this stage, the emphasis is focused on the Lamp exposure time and spatial resolution when the scanning is performed horizontally. In the future it is planned to expose all pixels simultaneously for real-time imaging. New software capabilities allow the application of digital image enhancement algorithms. Fast scanning permits obtaining images in 1 to 5 s. Oversampling yields a sharper edge response and a higher signal-to-noise ratio.
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Heterodyne detection at 300 GHz using neon Indicator Lamp glow discharge detector.
Applied optics, 2013Co-Authors: Avihai Aharon, Norman S. Kopeika, Daniel Rozban, Amir AbramovichAbstract:A miniature neon Indicator Lamp, also known as a glow discharge detector (GDD), costing about 50 cents, was found to be an excellent room temperature terahertz radiation detector. Proof-of-concept 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried out as well. Previous results with the GDD at 10 GHz showed 40 times better sensitivity using heterodyne detection compared to direct detection. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 μW local-oscillator power using heterodyne compared to direct detection. The higher the local-oscillator power (P(lo)), the better the sensitivity of the detector. Further improvement can be achieved by employing better quasi-optical design.
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Heterodyne detection at 300 GHz using glow discharge detectors with efficient quasi-optical design
Terahertz Physics Devices and Systems VII: Advanced Applications in Industry and Defense, 2013Co-Authors: A. Akram, Amir Abramovich, Daniel Rozban, Assaf Levanon, Norman S. KopeikaAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. A proof of concept of 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried-out and polarization effects on heterodyne detection were investigated. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the Local Oscillator (LO) power (Plo) is increased. Effects of orthogonal polarizations of signal and local oscillator powers on heterodyne sensitivity were found to be surprisingly weak. More efficient quasi optical design for heterodyne detection is presented in this study, experimental results showed above 50% better performance compared to conventional ones.
Amir Abramovich - One of the best experts on this subject based on the ideXlab platform.
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Polarization effects on heterodyne detection and imaging using Glow Discharge Detector at millimeter wavelengths
Passive and Active Millimeter-Wave Imaging XVII, 2014Co-Authors: A. Akram, Norman S. Kopeika, Daniel Rozban, Amir Abramovich, Niv Banay, Assaf LevanonAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. Polarization effects on heterodyne detection were investigated in this work. In heterodyne detection, because of the dot product relationship between signal electric field (ES) and local oscillator (LO) electric field (Elo), optimal operation of heterodyne detection is obtained when ES and Elo are of the same polarization. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the LO power (Plo) is increased. In this work investigation of polarization effects in heterodyne detection using neon Indicator Lamp GDD was carried-out. Experimental results of heterodyne detection at 300 GHz showed that an intermediate frequency (IF) signal was obtained for orthogonal polarization of the LO and signal, in contradiction to the theory. Also, our latest imaging results using Glow Discharge Detector at millimeter wavelengths will be shown in this work.
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Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors
IEEE Sensors Journal, 2014Co-Authors: Assaf Levanon, Norman S. Kopeika, Daniel Rozban, Yitzhak Yitzhaky, Amir AbramovichAbstract:We have developed focal plan array (FPA) imagers based on very inexpensive miniature neon Indicator Lamp detectors called glow discharged detectors (GDDs). The novelty of this paper is a technique of calibration, which permits reliable imaging with such an inexpensive FPA. GDDs are commercial Lamps, which lack uniformity as detectors. The technique developed in this paper cancels out differences in response between the FPA Lamps caused by both nonuniformity of the MMW collimated beam, and nonuniformity of the GDDs and other components in the electronic circuit. Utilizing this method in the new imaging system unifies detector response. Results, shown with two types of sensor configurations (8 × 8 and 18 × 2 scanner array), indeed show better performances and improvement in visibility of details.
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Oversampling advances in millimeter-wave scan imaging using inexpensive neon Indicator Lamp detectors
Optical Engineering, 2013Co-Authors: Assaf Levanon, Norman S. Kopeika, Avihai Aharon, Daniel Rozban, Amir Abramovich, Yitzhak Yitzhaky, H. Joseph, A. Belenky, Michael Gefen, Orly Yadid PechtAbstract:In recent years, much effort has been invested to develop room temperature inexpensive, but sensitive, millimeter wave (MMW) and terahertz (THz) detectors that can be used as pixels in focal plane arrays, which is important for real-time imaging. A new 18×2 neon Indicator Lamp MMW/THz scanner was developed. The components of the camera include horizontally shifted two-column glow discharge detectors in a scanning array. The detectors, costing about 50 cents each, are wired to a preprocessing card, a VLSI board, and a motor for scanner movement. A description of the VLSI Verilog programmable hardware of the new scanner, the physical architecture, the software user interface, and imaging results at 97 GHz are presented. At this stage, the emphasis is focused on the Lamp exposure time and spatial resolution when the scanning is performed horizontally. In the future it is planned to expose all pixels simultaneously for real-time imaging. New software capabilities allow the application of digital image enhancement algorithms. Fast scanning permits obtaining images in 1 to 5 s. Oversampling yields a sharper edge response and a higher signal-to-noise ratio.
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Heterodyne detection at 300 GHz using neon Indicator Lamp glow discharge detector.
Applied optics, 2013Co-Authors: Avihai Aharon, Norman S. Kopeika, Daniel Rozban, Amir AbramovichAbstract:A miniature neon Indicator Lamp, also known as a glow discharge detector (GDD), costing about 50 cents, was found to be an excellent room temperature terahertz radiation detector. Proof-of-concept 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried out as well. Previous results with the GDD at 10 GHz showed 40 times better sensitivity using heterodyne detection compared to direct detection. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 μW local-oscillator power using heterodyne compared to direct detection. The higher the local-oscillator power (P(lo)), the better the sensitivity of the detector. Further improvement can be achieved by employing better quasi-optical design.
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Heterodyne detection at 300 GHz using glow discharge detectors with efficient quasi-optical design
Terahertz Physics Devices and Systems VII: Advanced Applications in Industry and Defense, 2013Co-Authors: A. Akram, Amir Abramovich, Daniel Rozban, Assaf Levanon, Norman S. KopeikaAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. A proof of concept of 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried-out and polarization effects on heterodyne detection were investigated. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the Local Oscillator (LO) power (Plo) is increased. Effects of orthogonal polarizations of signal and local oscillator powers on heterodyne sensitivity were found to be surprisingly weak. More efficient quasi optical design for heterodyne detection is presented in this study, experimental results showed above 50% better performance compared to conventional ones.
Norman S. Kopeika - One of the best experts on this subject based on the ideXlab platform.
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Polarization effects on heterodyne detection and imaging using Glow Discharge Detector at millimeter wavelengths
Passive and Active Millimeter-Wave Imaging XVII, 2014Co-Authors: A. Akram, Norman S. Kopeika, Daniel Rozban, Amir Abramovich, Niv Banay, Assaf LevanonAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. Polarization effects on heterodyne detection were investigated in this work. In heterodyne detection, because of the dot product relationship between signal electric field (ES) and local oscillator (LO) electric field (Elo), optimal operation of heterodyne detection is obtained when ES and Elo are of the same polarization. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the LO power (Plo) is increased. In this work investigation of polarization effects in heterodyne detection using neon Indicator Lamp GDD was carried-out. Experimental results of heterodyne detection at 300 GHz showed that an intermediate frequency (IF) signal was obtained for orthogonal polarization of the LO and signal, in contradiction to the theory. Also, our latest imaging results using Glow Discharge Detector at millimeter wavelengths will be shown in this work.
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Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors
IEEE Sensors Journal, 2014Co-Authors: Assaf Levanon, Norman S. Kopeika, Daniel Rozban, Yitzhak Yitzhaky, Amir AbramovichAbstract:We have developed focal plan array (FPA) imagers based on very inexpensive miniature neon Indicator Lamp detectors called glow discharged detectors (GDDs). The novelty of this paper is a technique of calibration, which permits reliable imaging with such an inexpensive FPA. GDDs are commercial Lamps, which lack uniformity as detectors. The technique developed in this paper cancels out differences in response between the FPA Lamps caused by both nonuniformity of the MMW collimated beam, and nonuniformity of the GDDs and other components in the electronic circuit. Utilizing this method in the new imaging system unifies detector response. Results, shown with two types of sensor configurations (8 × 8 and 18 × 2 scanner array), indeed show better performances and improvement in visibility of details.
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Oversampling advances in millimeter-wave scan imaging using inexpensive neon Indicator Lamp detectors
Optical Engineering, 2013Co-Authors: Assaf Levanon, Norman S. Kopeika, Avihai Aharon, Daniel Rozban, Amir Abramovich, Yitzhak Yitzhaky, H. Joseph, A. Belenky, Michael Gefen, Orly Yadid PechtAbstract:In recent years, much effort has been invested to develop room temperature inexpensive, but sensitive, millimeter wave (MMW) and terahertz (THz) detectors that can be used as pixels in focal plane arrays, which is important for real-time imaging. A new 18×2 neon Indicator Lamp MMW/THz scanner was developed. The components of the camera include horizontally shifted two-column glow discharge detectors in a scanning array. The detectors, costing about 50 cents each, are wired to a preprocessing card, a VLSI board, and a motor for scanner movement. A description of the VLSI Verilog programmable hardware of the new scanner, the physical architecture, the software user interface, and imaging results at 97 GHz are presented. At this stage, the emphasis is focused on the Lamp exposure time and spatial resolution when the scanning is performed horizontally. In the future it is planned to expose all pixels simultaneously for real-time imaging. New software capabilities allow the application of digital image enhancement algorithms. Fast scanning permits obtaining images in 1 to 5 s. Oversampling yields a sharper edge response and a higher signal-to-noise ratio.
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Heterodyne detection at 300 GHz using neon Indicator Lamp glow discharge detector.
Applied optics, 2013Co-Authors: Avihai Aharon, Norman S. Kopeika, Daniel Rozban, Amir AbramovichAbstract:A miniature neon Indicator Lamp, also known as a glow discharge detector (GDD), costing about 50 cents, was found to be an excellent room temperature terahertz radiation detector. Proof-of-concept 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried out as well. Previous results with the GDD at 10 GHz showed 40 times better sensitivity using heterodyne detection compared to direct detection. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 μW local-oscillator power using heterodyne compared to direct detection. The higher the local-oscillator power (P(lo)), the better the sensitivity of the detector. Further improvement can be achieved by employing better quasi-optical design.
-
Heterodyne detection at 300 GHz using glow discharge detectors with efficient quasi-optical design
Terahertz Physics Devices and Systems VII: Advanced Applications in Industry and Defense, 2013Co-Authors: A. Akram, Amir Abramovich, Daniel Rozban, Assaf Levanon, Norman S. KopeikaAbstract:A miniature neon Indicator Lamp, also known as a Glow Discharge Detector (GDD), costing about 50 cents, was found to be an excellent room temperature THz radiation detector. A proof of concept of 300 GHz heterodyne detection using GDD is demonstrated in this paper. Furthermore, a comparison to direct detection was carried-out and polarization effects on heterodyne detection were investigated. Preliminary results at 300 GHz showed better sensitivity by a factor of 20 with only 56 microwatt local oscillator power using heterodyne compared to direct detection. Further improvement of the detection sensitivity can be achieved if the Local Oscillator (LO) power (Plo) is increased. Effects of orthogonal polarizations of signal and local oscillator powers on heterodyne sensitivity were found to be surprisingly weak. More efficient quasi optical design for heterodyne detection is presented in this study, experimental results showed above 50% better performance compared to conventional ones.
Youngsuk Cho - One of the best experts on this subject based on the ideXlab platform.
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A novel method to position an endotracheal tube at the correct depth using an infrared sensor stylet
Canadian Journal of Anesthesia Journal canadien d'anesthésie, 2013Co-Authors: Yeongtak Song, Taeho Lim, Youngjoon Chee, Hyunggoo Kang, Youngsuk ChoAbstract:Objectif Cette étude est une évaluation de faisabilité pour déterminer la capacité de novices de se servir d’un mandrin muni d’un capteur infrarouge (IR) comme guide pour placer l’extrémité d’une sonde endotrachéale (SET) à 40 mm de la carène dans la trachée d’un porc. Méthode Nous avons mis au point un système de mandrin en fixant un capteur IR à la pointe d’un mandrin pour faciliter la mesure de la distance entre la SET et la carène. Nous avons calibré le système de façon à ce que la Lampe indicatrice du système de capteur IR s’allume lorsque la pointe de la SET atteint un point situé à 20 mm de la carène. Afin de placer la pointe de la SET à 40 mm (milieu de 20-60 mm) de la carène une fois que la Lampe indicatrice s’est allumée, l’opérateur se sert du marqueur de la SET pour retirer la SET de 20 mm. Pour cette étude, nous avons utilisé cinq voies aériennes fraîches de porc de façon aléatoire après tirage au sort, et dix novices ont été recrutés afin de tenter l’intervention dix fois sur chacune des voies aériennes porcines. Résultats Cinq cents intubations endotrachéales ont été réalisées. Pour la distance cible de 40 mm entre la pointe de la SET et la carène, la moyenne (écart type) de l’ensemble total de données était de 37,9 (3,5) mm; toutes les données se situaient entre 20 et 60 mm (500/500), et 98,2 % (491/500) des tentatives se sont situées entre 30 et 50 mm. Conclusion Le système de mandrin muni d’un capteur IR peut faciliter le positionnement correct de l’extrémité de la SET à une profondeur adéquate au-dessus de la carène dans une trachée porcine. L’évaluation d’une méthodologie de mandrin muni d’un capteur IR chez l’humain est de mise. Purpose This study is a feasibility assessment to determine the ability of novice users to utilize an infrared (IR) sensor stylet as a guide to position the tip of the endotracheal tube (ETT) 40 mm proximal to the carina in the swine trachea. Methods We developed a stylet system using an IR sensor attached to the tip of a stylet to facilitate measuring the distance of the ETT from the carina. The Indicator Lamp of the IR sensor system turns on through calibration when the ETT tip arrives at a point 20 mm proximal to the carina. In order to place the ETT tip 40 mm (middle of 20-60 mm) from the carina after the Indicator Lamp turns on, the operator uses the ETT marker to withdraw the ETT 20 mm. For this study, five fresh swine airways were used in random order after drawing lots, and ten novices were recruited to attempt the procedure ten times on each swine’s airway. Results Five hundred endotracheal intubations were performed. For the target distance of 40 mm from the ETT tip to the carina, the mean (standard deviation) of the total data set was 37.9 (3.5) mm; all data were within a 20-60 mm range (500/500), and 98.2% (491/500) of the attempts fell within the 30-50 mm range. Conclusions The IR sensor stylet system can facilitate correct positioning of the ETT tip at an appropriate depth above the carina in the swine trachea. Evaluation of the IR sensor stylet methodology in human subjects is warranted.
Taeho Lim - One of the best experts on this subject based on the ideXlab platform.
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A novel method to position an endotracheal tube at the correct depth using an infrared sensor stylet
Canadian Journal of Anesthesia Journal canadien d'anesthésie, 2013Co-Authors: Yeongtak Song, Taeho Lim, Youngjoon Chee, Hyunggoo Kang, Youngsuk ChoAbstract:Objectif Cette étude est une évaluation de faisabilité pour déterminer la capacité de novices de se servir d’un mandrin muni d’un capteur infrarouge (IR) comme guide pour placer l’extrémité d’une sonde endotrachéale (SET) à 40 mm de la carène dans la trachée d’un porc. Méthode Nous avons mis au point un système de mandrin en fixant un capteur IR à la pointe d’un mandrin pour faciliter la mesure de la distance entre la SET et la carène. Nous avons calibré le système de façon à ce que la Lampe indicatrice du système de capteur IR s’allume lorsque la pointe de la SET atteint un point situé à 20 mm de la carène. Afin de placer la pointe de la SET à 40 mm (milieu de 20-60 mm) de la carène une fois que la Lampe indicatrice s’est allumée, l’opérateur se sert du marqueur de la SET pour retirer la SET de 20 mm. Pour cette étude, nous avons utilisé cinq voies aériennes fraîches de porc de façon aléatoire après tirage au sort, et dix novices ont été recrutés afin de tenter l’intervention dix fois sur chacune des voies aériennes porcines. Résultats Cinq cents intubations endotrachéales ont été réalisées. Pour la distance cible de 40 mm entre la pointe de la SET et la carène, la moyenne (écart type) de l’ensemble total de données était de 37,9 (3,5) mm; toutes les données se situaient entre 20 et 60 mm (500/500), et 98,2 % (491/500) des tentatives se sont situées entre 30 et 50 mm. Conclusion Le système de mandrin muni d’un capteur IR peut faciliter le positionnement correct de l’extrémité de la SET à une profondeur adéquate au-dessus de la carène dans une trachée porcine. L’évaluation d’une méthodologie de mandrin muni d’un capteur IR chez l’humain est de mise. Purpose This study is a feasibility assessment to determine the ability of novice users to utilize an infrared (IR) sensor stylet as a guide to position the tip of the endotracheal tube (ETT) 40 mm proximal to the carina in the swine trachea. Methods We developed a stylet system using an IR sensor attached to the tip of a stylet to facilitate measuring the distance of the ETT from the carina. The Indicator Lamp of the IR sensor system turns on through calibration when the ETT tip arrives at a point 20 mm proximal to the carina. In order to place the ETT tip 40 mm (middle of 20-60 mm) from the carina after the Indicator Lamp turns on, the operator uses the ETT marker to withdraw the ETT 20 mm. For this study, five fresh swine airways were used in random order after drawing lots, and ten novices were recruited to attempt the procedure ten times on each swine’s airway. Results Five hundred endotracheal intubations were performed. For the target distance of 40 mm from the ETT tip to the carina, the mean (standard deviation) of the total data set was 37.9 (3.5) mm; all data were within a 20-60 mm range (500/500), and 98.2% (491/500) of the attempts fell within the 30-50 mm range. Conclusions The IR sensor stylet system can facilitate correct positioning of the ETT tip at an appropriate depth above the carina in the swine trachea. Evaluation of the IR sensor stylet methodology in human subjects is warranted.
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A novel method to position an endotracheal tube at the correct depth using an infrared sensor stylet Une methode innovante pour positionner une sonde endotracheale ala bonne profondeur avec un mandrin muni d'un capteur infrarouge
2013Co-Authors: Taeho LimAbstract:Purpose This study is a feasibility assessment to determine the ability of novice users to utilize an infrared (IR) sensor stylet as a guide to position the tip of the endotracheal tube (ETT) 40 mm proximal to the carina in the swine trachea. Methods We developed a stylet system using an IR sensor attached to the tip of a stylet to facilitate measuring the distance of the ETT from the carina. The Indicator Lamp of the IR sensor system turns on through calibration when the ETT tip arrives at a point 20 mm proximal to the carina. In order to place the ETT tip 40 mm (middle of 20-60 mm) from the carina after the Indicator Lamp turns on, the operator uses the ETT marker to withdraw the ETT 20 mm. For this study, five fresh swine airways were used in random order after drawing lots, and ten novices were recruited to attempt the procedure ten times on each swine’s airway. Results Five hundred endotracheal intubations were performed. For the target distance of 40 mm from the ETT tip to the carina, the mean (standard deviation) of the total data set was 37.9 (3.5) mm; all data were within a 20-60 mm range (500/500), and 98.2% (491/500) of the attempts fell within the 30-50 mm range. Conclusions The IR sensor stylet system can facilitate correct positioning of the ETT tip at an appropriate depth above the carina in the swine trachea. Evaluation of the IR sensor stylet methodology in human subjects is warranted.