The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform
Katsuyuki Miyasaka - One of the best experts on this subject based on the ideXlab platform.
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A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO2) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO2, and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
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EMBC - A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Seiki Abe, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO 2 ) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO 2 , and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO 2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
Fumihiko Takatori - One of the best experts on this subject based on the ideXlab platform.
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A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO2) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO2, and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
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EMBC - A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Seiki Abe, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO 2 ) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO 2 , and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO 2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
Shinji Yamamori - One of the best experts on this subject based on the ideXlab platform.
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A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO2) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO2, and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
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EMBC - A novel mainstream capnometer system for non-intubated pediatric patients requiring oxygen administration
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Fumihiko Takatori, Shinji Yamamori, Masayuki Inoue, Seiki Abe, Katsuyuki MiyasakaAbstract:Capnometer has been widely used as a Respiratory Monitor. Stable carbon dioxide (CO 2 ) Monitoring of non-intubated patient is especially problematic due to the frequent occurrence of tube obstruction and it could be even more difficult when oxygen is being administered. Oxygen is often administered by an oxygen mask or oxygen nasal cannula; however there are some problems with these methods. For oxygen masks, it is necessary to provide high-flow oxygen to prevent rebreathing of exhaled CO 2 , and as for oxygen nasal cannula, it is incapable of increasing the oxygen concentration and patient may feel uncomfortable during oxygen administration because it could dry nasal mucous. To solve these problems, we developed a novel mainstream capnometer system, which provides stable Monitoring of exhaled CO 2 while administering oxygen. This capnometer system has a mask with an opening large enough to facilitate the observation of patient's nose and mouth and the procedures such as daily oral care. Furthermore, the outer rim of the mask is designed to effectively retain oxygen flow without causing rebreathing.
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Evaluation of a compact device for capnometry of main-stream type compared with one of side-stream type in a postoperative care unit
Masui. The Japanese journal of anesthesiology, 2006Co-Authors: Jobutada Morioka, Shinji Yamamori, Makoto OzakiAbstract:BACKGROUND Pulse oximetry is insufficient for postoperative Respiratory Monitoring. It is better to use capnometry for postoperative patients because it is easy to use and useful to Monitor patients' breathing. However, capnometry must be improved in its wearability and detection capability. Therefore it is not used often for postoperative patients as a Respiratory Monitor. METHODS We have examined a side-stream type capnometer and an improved main-stream type capnometer in a post-anesthesia care unit (PACU) to determine which is better as a Monitor for detection of breathing. A total of 55 patients participated in this study. Patients wore a device including a main-stream capnometer and a side-stream capnometer. Capnograms were recorded while patients were staying in the PACU. RESULTS The main-stream system could detect breathing in all the patients, but the side-stream system failed to detect breathing in five patients. The side-stream device showed a warning of "apnea" for five patients, even though these patients were breathing normally. CONCLUSIONS We conclude that the main-stream system is a better Monitor of postoperative Respiratory condition.
Paul J. Keall - One of the best experts on this subject based on the ideXlab platform.
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TU‐E‐204B‐07: Real‐Time 3D Target Position Estimation Using a Single KV Imager Combined with an External Respiratory Monitor during Arc and Static Beam Delivery
Medical Physics, 2010Co-Authors: Byungchul Cho, Per Rugaard Poulsen, Dan Ruan, Amit Sawant, Paul J. KeallAbstract:Purpose: To experimentally investigate a real‐time 3D target position estimation method, using a single kV imager combined with an external Respiratory Monitor, integrated with a DMLC tracking. Method and Materials: The experimental DMLC tracking system employed a Varian Trilogy with kV imager and Respiratory Position Management (RPM). The internal/external correlation between 3D target position T(t) and RPM signal R(t) was modeled by a state‐augmented linear model: T(t)=a*R(t)+b*R(t‐ τ)+c. The model parameters were determined by solving least‐squares estimation of the error Σ∥p i ‐ P(θi)T(ti)∥2, where p i was the projected marker positions in kV images and P(θi) was the projection operator at the gantry angle θi. During arc and static 5‐field beam delivery, DMLC tracking was performed with ten patient lungtumor motion traces. A 3D motion stage with a gold marker and a separate 1D motion stage with an RPM marker‐block were used to reproduce the tumor motion and external Respiratory signals, respectively. The gold‐marker positions were measured by 1‐Hz kV imaging, while the external marker positions were measure by RPM system at 30Hz. To initialize the correlation model rotational kV images over 120° of angular span were acquired. The estimated 3D marker positions were sent to the DMLC to reposition the beam. The tracking accuracies were quantified as “beam‐target” alignment mismatch in cine MV images acquired during the experiments. Results: With tracking, the average errors of the ten lungtumor traces were 0.6–1.4mm and 0.8–1.5mm during the arc and static 5‐field beam delivery, respectively. Without tracking, the average errors were 3.7–6.1mm and 3.0–7.3mm. Conclusion: The DMLC tracking system integrated with a new estimation method shows typical accuracy of 1mm for patient tumor motion traces during arc and static delivery, and thus has the potential for accurate motion management of thoracic and abdominal tumors.Conflict of Interest: Supported by NTH/NCI R0193626.
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tu e 204b 07 real time 3d target position estimation using a single kv imager combined with an external Respiratory Monitor during arc and static beam delivery
Medical Physics, 2010Co-Authors: Byungchul Cho, Per Rugaard Poulsen, Dan Ruan, Amit Sawant, Paul J. KeallAbstract:Purpose: To experimentally investigate a real‐time 3D target position estimation method, using a single kV imager combined with an external Respiratory Monitor, integrated with a DMLC tracking. Method and Materials: The experimental DMLC tracking system employed a Varian Trilogy with kV imager and Respiratory Position Management (RPM). The internal/external correlation between 3D target position T(t) and RPM signal R(t) was modeled by a state‐augmented linear model: T(t)=a*R(t)+b*R(t‐ τ)+c. The model parameters were determined by solving least‐squares estimation of the error Σ∥p i ‐ P(θi)T(ti)∥2, where p i was the projected marker positions in kV images and P(θi) was the projection operator at the gantry angle θi. During arc and static 5‐field beam delivery, DMLC tracking was performed with ten patient lungtumor motion traces. A 3D motion stage with a gold marker and a separate 1D motion stage with an RPM marker‐block were used to reproduce the tumor motion and external Respiratory signals, respectively. The gold‐marker positions were measured by 1‐Hz kV imaging, while the external marker positions were measure by RPM system at 30Hz. To initialize the correlation model rotational kV images over 120° of angular span were acquired. The estimated 3D marker positions were sent to the DMLC to reposition the beam. The tracking accuracies were quantified as “beam‐target” alignment mismatch in cine MV images acquired during the experiments. Results: With tracking, the average errors of the ten lungtumor traces were 0.6–1.4mm and 0.8–1.5mm during the arc and static 5‐field beam delivery, respectively. Without tracking, the average errors were 3.7–6.1mm and 3.0–7.3mm. Conclusion: The DMLC tracking system integrated with a new estimation method shows typical accuracy of 1mm for patient tumor motion traces during arc and static delivery, and thus has the potential for accurate motion management of thoracic and abdominal tumors.Conflict of Interest: Supported by NTH/NCI R0193626.
Byungchul Cho - One of the best experts on this subject based on the ideXlab platform.
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TU‐E‐204B‐07: Real‐Time 3D Target Position Estimation Using a Single KV Imager Combined with an External Respiratory Monitor during Arc and Static Beam Delivery
Medical Physics, 2010Co-Authors: Byungchul Cho, Per Rugaard Poulsen, Dan Ruan, Amit Sawant, Paul J. KeallAbstract:Purpose: To experimentally investigate a real‐time 3D target position estimation method, using a single kV imager combined with an external Respiratory Monitor, integrated with a DMLC tracking. Method and Materials: The experimental DMLC tracking system employed a Varian Trilogy with kV imager and Respiratory Position Management (RPM). The internal/external correlation between 3D target position T(t) and RPM signal R(t) was modeled by a state‐augmented linear model: T(t)=a*R(t)+b*R(t‐ τ)+c. The model parameters were determined by solving least‐squares estimation of the error Σ∥p i ‐ P(θi)T(ti)∥2, where p i was the projected marker positions in kV images and P(θi) was the projection operator at the gantry angle θi. During arc and static 5‐field beam delivery, DMLC tracking was performed with ten patient lungtumor motion traces. A 3D motion stage with a gold marker and a separate 1D motion stage with an RPM marker‐block were used to reproduce the tumor motion and external Respiratory signals, respectively. The gold‐marker positions were measured by 1‐Hz kV imaging, while the external marker positions were measure by RPM system at 30Hz. To initialize the correlation model rotational kV images over 120° of angular span were acquired. The estimated 3D marker positions were sent to the DMLC to reposition the beam. The tracking accuracies were quantified as “beam‐target” alignment mismatch in cine MV images acquired during the experiments. Results: With tracking, the average errors of the ten lungtumor traces were 0.6–1.4mm and 0.8–1.5mm during the arc and static 5‐field beam delivery, respectively. Without tracking, the average errors were 3.7–6.1mm and 3.0–7.3mm. Conclusion: The DMLC tracking system integrated with a new estimation method shows typical accuracy of 1mm for patient tumor motion traces during arc and static delivery, and thus has the potential for accurate motion management of thoracic and abdominal tumors.Conflict of Interest: Supported by NTH/NCI R0193626.
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tu e 204b 07 real time 3d target position estimation using a single kv imager combined with an external Respiratory Monitor during arc and static beam delivery
Medical Physics, 2010Co-Authors: Byungchul Cho, Per Rugaard Poulsen, Dan Ruan, Amit Sawant, Paul J. KeallAbstract:Purpose: To experimentally investigate a real‐time 3D target position estimation method, using a single kV imager combined with an external Respiratory Monitor, integrated with a DMLC tracking. Method and Materials: The experimental DMLC tracking system employed a Varian Trilogy with kV imager and Respiratory Position Management (RPM). The internal/external correlation between 3D target position T(t) and RPM signal R(t) was modeled by a state‐augmented linear model: T(t)=a*R(t)+b*R(t‐ τ)+c. The model parameters were determined by solving least‐squares estimation of the error Σ∥p i ‐ P(θi)T(ti)∥2, where p i was the projected marker positions in kV images and P(θi) was the projection operator at the gantry angle θi. During arc and static 5‐field beam delivery, DMLC tracking was performed with ten patient lungtumor motion traces. A 3D motion stage with a gold marker and a separate 1D motion stage with an RPM marker‐block were used to reproduce the tumor motion and external Respiratory signals, respectively. The gold‐marker positions were measured by 1‐Hz kV imaging, while the external marker positions were measure by RPM system at 30Hz. To initialize the correlation model rotational kV images over 120° of angular span were acquired. The estimated 3D marker positions were sent to the DMLC to reposition the beam. The tracking accuracies were quantified as “beam‐target” alignment mismatch in cine MV images acquired during the experiments. Results: With tracking, the average errors of the ten lungtumor traces were 0.6–1.4mm and 0.8–1.5mm during the arc and static 5‐field beam delivery, respectively. Without tracking, the average errors were 3.7–6.1mm and 3.0–7.3mm. Conclusion: The DMLC tracking system integrated with a new estimation method shows typical accuracy of 1mm for patient tumor motion traces during arc and static delivery, and thus has the potential for accurate motion management of thoracic and abdominal tumors.Conflict of Interest: Supported by NTH/NCI R0193626.