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Research Output 1998 2019

  • 399 Citations
  • 10 h-Index
  • 69 Article
  • 25 Conference contribution
  • 1 Chapter
  • 1 Conference article
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Conference contribution
2014
1 Citation (Scopus)

Investigation of mechanical load on proximal left anterior descending of coronary artery

Yamamoto, T., Iwasaki, K., Arai, J., Ohori, K. & Umezu, M., 2014, IFMBE Proceedings. Springer Verlag, Vol. 43. p. 805-808 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dynamic loads
Microscopes
2013
1 Citation (Scopus)

Combined analysis of pathology and hemodynamics of human unruptured cerebral aneurysm with thin-walled region

Tobe, Y., Yagi, T., Iwabuchi, Y., Yamanashi, M., Takamura, K., Iwasaki, K., Umezu, M., Hayashi, Y., Yoshida, H., Nakajima, A., Nishitani, K., Okada, Y., Sugawara, M., Hiraguchi, S., Kubo, T. & Kitahara, S., 2013, ASME 2013 Summer Bioengineering Conference, SBC 2013. Vol. 1 A.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hemodynamics
Intracranial Aneurysm
Pathology
2012

Investigation on a relationship between hemodynamics and wall-thinning in an unruptured human cerebral aneurysm

Tobe, Y., Yagi, T., Takahashi, S., Iwabuchi, Y., Yamanashi, M., Iwasaki, K., Umezu, M., Hayashi, Y., Yoshida, H., Nishitani, K., Okada, Y., Sugawara, M., Hiraguchi, S., Kubo, T. & Kitahara, S., 2012, ASME 2012 Summer Bioengineering Conference, SBC 2012. p. 853-854 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hemodynamics
2010

Experimental investigation to ensure a safety of the exchange of extracorporeal-type ventricular assist devices in long-term-use patients

Tanaka, T., Kume, R., Kusunose, S., Tatsuta, R., Igarashi, T., Ito, K., Iwasaki, K. & Umezu, M., 2010, IFMBE Proceedings. Vol. 31 IFMBE. p. 378-381 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Stainless Steel
Cables
Stainless steel
Heating
Water

Silicone vascular models for analysis of carotid artery stenting

Okamoto, Y., Inukai, H., Kobashi, H., Yamaga, H., Yagi, T., Iwasaki, K., Shiurba, R. & Umezu, M., 2010, IFMBE Proceedings. Vol. 31 IFMBE. p. 398-401 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Silicones
Stents
Mechanical properties
Silicone Elastomers
Geometry
2009
1 Citation (Scopus)

Biomedical Engineering Analysis of the Rupture Risk of Cerebral Aneurysms: Flow Comparison of Three Small Pre-ruptured Versus Six Large Unruptured Cases

Kamoda, A., Yagi, T., Sato, A., Qian, Y., Iwasaki, K., Umezu, M., Akutsu, T., Takao, H. & Murayama, Y., 2009, IFMBE Proceedings. Vol. 23. p. 1600-1603 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Biomedical engineering
Siphons
Angiography
Hemodynamics
Rapid prototyping
2 Citations (Scopus)

Calibration system for pulse spectrophotometry using a double-layer pulsation flow-cell

Oura, M., Kobayashi, N., Yamamori, S., Takeda, S., Iwasaki, K. & Umezu, M., 2009, Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009. p. 896-899 4 p. 5334889

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spectrophotometry
Calibration
Density (optical)
Hemoglobin
Hemoglobins

Development of Evaluation Test Method for the Possibility of Central Venous Catheter Perforation Caused by the Insertion Angle of a Guidewire and a Dilator

Uematsu, M., Arita, M., Iwasaki, K., Tanaka, T., Ohta, T., Umezu, M. & Tsuchiya, T., 2009, IFMBE Proceedings. Vol. 23. p. 1183-1186 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Catheters
Blood vessels
Tissue

Fabrication of Three-Dimensional Tissues with Perfused Microchannels

Sakaguchi, K., Shimizu, T., Iwasaki, K., Yamato, M., Umezu, M. & Okano, T., 2009, IFMBE Proceedings. Vol. 23. p. 1213-1216 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Microchannels
Tissue
Fabrication
Collagen
Endothelial cells
2 Citations (Scopus)

In-vitro Evaluation Method to Measure the Radial Force of Various Stents

Okamoto, Y., Tanaka, T., Kobashi, H., Iwasaki, K. & Umezu, M., 2009, IFMBE Proceedings. Vol. 23. p. 1053-1056 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Stents
Force measurement
Geometry
1 Citation (Scopus)

Microscale Visualization of Erythrocyte Deformation by Colliding with a Rigid Surface Using a High-Speed Impinging Jet

Wakasa, S., Yagi, T., Akimoto, Y., Tokunaga, N., Iwasaki, K. & Umezu, M., 2009, IFMBE Proceedings. Vol. 23. p. 1422-1425 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Visualization
Membranes
Buckling
Siloxanes
Hemoglobin
1 Citation (Scopus)

New challenge for studying flow-induced blood damage: Macroscale modeling and microscale verification

Yagi, T., Wakasa, S., Tokunaga, N., Akimoto, Y., Akutsu, T., Iwasaki, K. & Umezu, M., 2009, IFMBE Proceedings. Vol. 23. p. 1430-1433 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Blood
Heart valve prostheses
Microfluidics
Velocity measurement
Wavelet transforms

Successful Reproduction of In-Vivo Fracture of an Endovascular Stent in Superficial Femoral Artery Utilizing a Novel Multi-loading Durability Test System

Iwasaki, K., Tsubouchi, S., Hama, Y. & Umezu, M., 2009, IFMBE Proceedings. Vol. 23. p. 1443-1446 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Stents
Durability
Angiography
Struts
Silicones
2008
2 Citations (Scopus)

Development of a compact mock circulation system and a new flow-cell model for pulse spectrophotometry

Oura, M., Kobayashi, N., Takeda, S., Iwasaki, K. & Umezu, M., 2008, Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - "Personalized Healthcare through Technology". p. 670-673 4 p. 4649241

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Density (optical)
Spectrophotometry
Pulse
Blood
Blood substitutes

Tissue-engineered robust vascular grafts utilizing the physiologically equivalent pulsatile bioreactor

Iwasaki, K., Kojima, K., Kodama, S., Umezu, M. & Vacanti, C., 2008, 8th World Biomaterials Congress 2008. Vol. 3. p. 1694 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bioreactors
Grafts
Tissue
2007
2 Citations (Scopus)

A reproduction of inflow restriction in the mock circulatory system to evaluate a hydrodynamic performance of a ventricular assist device in practical conditions

Furusato, M., Shima, T., Kokuzawa, Y., Ito, K., Tanaka, T., Iwasaki, K., Qian, Y., Umezu, M., Yan, Z. & Zhu, L., 2007, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 4689 LNBI. p. 553-558 6 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4689 LNBI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heart-Assist Devices
Hydrodynamics
Cardiovascular System
Reproduction
Restriction

Investigation of a hydrodynamic performance of a ventricular assist device after its long-term use in clinical application

Kokuzawa, Y., Shima, T., Furusato, M., Ito, K., Tanaka, T., Igarashi, T., Nishinaka, T., Iwasaki, K. & Umezu, M., 2007, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 4689 LNBI. p. 429-435 7 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4689 LNBI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heart-Assist Devices
Hydrodynamics
Pumps
Heart Transplantation
Pump

Tensile test to ensure a safety of cannula connection in clinical ventricular assist device (VAD)

Tanaka, T., Shima, T., Furusato, M., Kokuzawa, Y., Ito, K., Iwasaki, K., Qian, Y. & Umezu, M., 2007, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 4689 LNBI. p. 546-552 7 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 4689 LNBI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heart-Assist Devices
Tensile Test
Connector
Safety
Transplantation (surgical)

Three-dimensional fluid mechanics of the sinus of valsalva with a bileaflet mechanical heart valve

Yagi, T., Ishikawa, D., Sudo, H., Wakasa, S., Yang, W., Iwasaki, K. & Umezu, M., 2007, Proceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007. p. 187-188 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluid mechanics
2006

Development of "patient robot"; measurement system of myocardial behaviors for the quantitative evaluation of the surgical robot technology

Uematsu, M., Ando, H., Morita, A., Uesugi, S., Iwasaki, K., Umezu, M. & Shiraishi, Y., 2006, Proceedings of the First IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics, 2006, BioRob 2006. Vol. 2006. p. 655-660 6 p. 1639164

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Robots
Image fusion
Surface measurement
Electrocardiography
Surgery
16 Citations (Scopus)

Noninvasive measurement of total hemoglobin and hemoglobin derivatives using multiwavelength pulse spectrophotometry -In vitro study with a mock circulatory system-

Suzaki, H., Kobayashi, N., Nagaoka, T., Iwasaki, K., Umezu, M., Takeda, S. & Togawa, T., 2006, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. p. 799-802 4 p. 4029808

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Carboxyhemoglobin
Methemoglobin
Hemoglobin
Spectrophotometry
Hemoglobins
2005
3 Citations (Scopus)

An innovative approach to evaluate a cardiac function based on surface measurement

Uematsu, M., Shiraishi, Y., Sekine, K., Yambe, T., Saijo, Y., Park, Y., Ando, H., Matsumoto, T., Takeda, S., Iwasaki, K. & Umezu, M., 2005, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 7 VOLS. p. 7640-7643 4 p. 1616281

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Surface measurement
Blood
Pumps
Tissue
Sensors
5 Citations (Scopus)

Relation between hematocrit and optical density in pulse oximetry -In vitro study with Waseda mock circulatory system

Suzaki, H., Kobayashi, N., Kubota, H., Aomi, T., Nagaoka, T., Iwasaki, K., Umezu, M., Takeda, S. & Uchiyama, A., 2005, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 7 VOLS. p. 2626-2629 4 p. 1617008

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Density (optical)
Blood
Tissue
Optical properties
Spectrophotometry
2002

A challenge to develop an inexpensive "spiral vortex pump"

Tsujimoto, T., Iwasaki, K., Saeki, W., Yoshida, K., Arita, M., Umezu, M., Qian, Y., Ye, C. X., Imachi, K., Ishihara, K. & Tanaka, T., 2002, Proceedings of Asian Simulation Conference; System Simulation and Scientific Computing (Shanghai). Zongij, C., Minrui, F., Guosen, H., Xiaoyuan, P. & Guangleng, X. (eds.). Vol. 2. p. 1040-1044 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pump
Vortex
Vortex flow
Pumps
Artificial heart
1 Citation (Scopus)

Spiral vortex ventricular assist device: Improvement by engineering analysis and simulation

Iwasaki, K., Umezu, M., Chun-Xiu, Y., Nugent, A., Nakamura, T., Arita, M., Yi, Q., Tanaka, T., Imachi, K., Ishihara, K. & Chang, V., 2002, Proceedings of Asian Simulation Conference; System Simulation and Scientific Computing (Shanghai). Zongij, C., Minrui, F., Guosen, H., Xiaoyuan, P. & Guangleng, X. (eds.). Vol. 2. p. 1035-1039 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pump
Vortex
Vortex flow
Pumps
Congestive Heart Failure