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Your search keyword '"Ostojich, Diana"' showing total 11 results
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11 results on '"Ostojich, Diana"'

2. Battery-free, lightweight, injectable microsystem for in vivo wireless pharmacology and optogenetics

Author

Zhang, Yi, Castro, Daniel C., Han, Yuan, Wu, Yixin, Guo, Hexia, Weng, Zhengyan, Xue, Yeguang, Ausra, Jokubas, Wang, Xueju, Li, Rui, Wu, Guangfu, Vázquez-Guardado, Abraham, Xie, Yiwen, Xie, Zhaoqian, Ostojich, Diana, Peng, Dongsheng, Sun, Rujie, Wang, Binbin, Yu, Yongjoon, Leshock, John P., Qu, Subing, Su, Chun-Ju, Shen, Wen, Hang, Tao, Banks, Anthony, Huang, Yonggang, Radulovic, Jelena, Gutruf, Philipp, Bruchas, Michael R., and Rogers, John A.

Published
2019

3. Continuous, noninvasive wireless monitoring of flow of cerebrospinal fluid through shunts in patients with hydrocephalus

Author

Krishnan, Siddharth R., Arafa, Hany M., Kwon, Kyeongha, Deng, Yujun, Su, Chun-Ju, Reeder, Jonathan T., Freudman, Juliet, Stankiewicz, Izabela, Chen, Hsuan-Ming, Loza, Robert, Mims, Marcus, Mims, Mitchell, Lee, KunHyuck, Abecassis, Zachary, Banks, Aaron, Ostojich, Diana, Patel, Manish, Wang, Heling, Börekçi, Kaan, Rosenow, Joshua, Tate, Matthew, Huang, Yonggang, Alden, Tord, Potts, Matthew B., Ayer, Amit B., and Rogers, John A.

Published
2020
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4. Wireless, Soft Sensors of Skin Hydration with Designs Optimized for Rapid, Accurate Diagnostics of Dermatological Health

Author

Shin, Jaeho, primary, Wang, Heling, additional, Kwon, Kyeongha, additional, Ostojich, Diana, additional, Christiansen, Zach, additional, Berkovich, Jaime, additional, Park, Yoonseok, additional, Li, Zhengwei, additional, Lee, Geumbee, additional, Nasif, Rania, additional, Chung, Ted S., additional, Su, Chun‐Ju, additional, Lim, Jaeman, additional, Kubota, Hitoki, additional, Ikoma, Akihiko, additional, Lu, Yi‐An, additional, Lin, Derrick H., additional, Xu, Shuai, additional, Banks, Anthony, additional, Chang, Jan‐Kai, additional, and Rogers, John A., additional

Published
2022
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5. Intramuscular Microvascular Flow Sensing for Flap Monitoring in a Porcine Model of Arterial and Venous Occlusion

Author

Lu, Di, additional, Moritz, William, additional, Arafa, Hany M., additional, Yang, Quansan, additional, Jacobson, Lauren, additional, Ostojich, Diana, additional, Bai, Wubin, additional, Guo, Hexia, additional, Wu, Changsheng, additional, Li, Shuo, additional, Li, Shupeng, additional, Huang, Yonggang, additional, Xu, Yameng, additional, Yan, Ying, additional, Westman, Amanda M., additional, MacEwan, Matthew R., additional, Rogers, John A., additional, and Pet, Mitchell A., additional

Published
2022
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6. 49. Intramuscular Microvascular Flow Sensing for Flap Monitoring in a Porcine Model of Arterial and Venous Occlusion

Author

Moritz, William R., primary, Lu, Di, additional, Yang, Quansan, additional, Jacobson, Lauren, additional, Arafa, Hany M., additional, Ostojich, Diana, additional, Bai, Wubin, additional, Guo, Hexia, additional, Wu, Changsheng, additional, Li, Shuo, additional, Li, Shupeng, additional, Huang, Yonggang, additional, Xu, Yameng, additional, Yan, Ying, additional, Westman, Amanda M., additional, MacEwan, Matthew R., additional, Rodgers, John A., additional, and Pet, Mitchell A., additional

Published
2022
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7. Intramuscular Microvascular Flow Sensing for Flap Monitoring in a Porcine Model of Arterial and Venous Occlusion.

Author

Lu, Di, Moritz, William, Arafa, Hany M., Yang, Quansan, Jacobson, Lauren, Ostojich, Diana, Bai, Wubin, Guo, Hexia, Wu, Changsheng, Li, Shuo, Li, Shupeng, Huang, Yonggang, Xu, Yameng, Yan, Ying, Westman, Amanda M., MacEwan, Matthew R., Rogers, John A., and Pet, Mitchell A.

Subjects
ARTERIAL occlusions, FREE flaps, MUSCULOCUTANEOUS flaps, NEAR infrared spectroscopy, SMART devices, BLOOD flow measurement, FLOW measurement
Abstract

Background Commercially available near infrared spectroscopy devices for continuous free flap tissue oxygenation (StO 2) monitoring can only be used on flaps with a cutaneous component. Additionally, differences in skin quality and pigmentation may alter StO 2 measurements. Here, we present a novel implantable heat convection probe that measures microvascular blood flow for peripheral monitoring of free flaps, and is not subject to the same issues that limit the clinical utility of near-infrared spectroscopy. Methods The intratissue microvascular flow-sensing device includes a resistive heater, 4 thermistors, a small battery, and a Bluetooth chip, which allows connection to a smart device. Convection of applied heat is measured and mathematically transformed into a measurement of blood flow velocity. This was tested alongside Vioptix T.Ox in a porcine rectus abdominis myocutaneous flap model of arterial and venous occlusion. After flap elevation, the thermal device was deployed intramuscularly, and the cutaneous T.Ox device was applied. Acland clamps were alternately applied to the flap artery and veins to achieve 15 minutes periods of flap ischemia and congestion with a 15 minutes intervening recovery period. In total, five devices were tested in three flaps in three separate pigs over 16 vaso-occlusive events. Results Flow measurements were responsive to both ischemia and congestion, and returned to baseline during recovery periods. Flow measurements corresponded closely with measured StO 2. Cross-correlation at zero lag showed agreement between these two sensing modalities. Two novel devices tested simultaneously on the same flap showed only minor variations in flow measurements. Conclusion This novel probe is capable of detecting changes in tissue microcirculatory blood flow. This device performed well in a swine model of flap ischemia and congestion, and shows promise as a potentially useful clinical tool. Future studies will investigate performance in fasciocutaneous flaps and characterize longevity of the device over a period of several days. [ABSTRACT FROM AUTHOR]

Published
2023
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10. Passive sweat collection and colorimetric analysis of biomarkers relevant to kidney disorders using a soft microfluidic system

Author

Zhang, Yi, primary, Guo, Hexia, additional, Kim, Sung Bong, additional, Wu, Yixin, additional, Ostojich, Diana, additional, Park, Sook Hyeon, additional, Wang, Xueju, additional, Weng, Zhengyan, additional, Li, Rui, additional, Bandodkar, Amay J., additional, Sekine, Yurina, additional, Choi, Jungil, additional, Xu, Shuai, additional, Quaggin, Susan, additional, Ghaffari, Roozbeh, additional, and Rogers, John A., additional

Published
2019
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11. Air2Liquid Method for Selective, Sensitive Detection of Gas-Phase Organophosphates.

Author

Brothers MC, Kim S, Adkins D, Lewis P, Smith JE, Ostojich D, Kim SS, Rogers JA, and Rubenstein HM

Subjects
Biosensing Techniques methods, Gases chemistry, Organophosphates metabolism
Abstract

Environmental hazards typically are encountered in the gaseous phase; however, selective sensing modalities for identifying and quantitating compounds of interest in an inexpensive, pseudo-real-time format are severely lacking. Here, we present a novel proof-of-concept that combines an Air2Liquid sampler in conjunction with an oil-in-water microfluidic assay for detection of organophosphates. We believe this proof-of-concept will enable development of a new platform technology for semivolatile detection that we have demonstrated to detect 50 pmoles (2 ppb) of neurotoxic organophosphates.

Published
2020
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