Recent publications


A. Taguchi, S. DeVience, B. Driesschaert, V. V. Khramtsov, and H. Hirata. In vitro simultaneous mapping of the partial pressure of oxygen, pH and inorganic phosphate using electron paramagnetic resonance. Analyst, Vol. 145, no. 9, pp. 3236-3244 (2020). doi: 10.1039/D0AN00168F, published online 26 February 2020. (Selected as Outside Back Cover)


R. Nakaoka and H. Hirata, Noise characteristics of a 750-MHz electronically tunable resonator for electron paramagnetic resonance spectroscopy, AIP Advances, Vol. 9, No. 7, article no. 075312 (2019) (7 pages). doi: 10.1063/1.5099381, published online 18 July 2019. (Open Access)

T. Yokoyama, A. Taguchi, H. Kubota, N. J. Stewart, S. Matsumoto, I. A. Kirilyuk, and H. Hirata, Simultaneous T2* mapping of 14N- and 15N-labeled dicarboxy-PROXYLs using CW-EPR-based single-point imaging, Journal of Magnetic Resonance, Vol. 305, pp. 122-130 (2019). DOI: 10.1016/j.jmr.2019.06.012, published online 26 June 2019.


D. A. Komarov, Y. Ichikawa, K. Yamamoto, N. J. Stewart, S. Matsumoto, H. Yasui, I. A. Kirilyuk, V. V. Khramtsov, O. Inanami, and H. Hirata. In vivo extracellular pH mapping of tumors using electron paramagnetic resonance. Analytical Chemistry, DOI: 10.1021/acs.analchem.8b03328, published online 29 October 2018.

N. J. Stewart, H. Kumeta, M. Tomohiro, T. Hashimoto, N. Hatae, and S. Matsumoto. Long-range heteronuclear J-coupling constants in esters: Implications for 13C metabolic MRI by side-arm parahydrogen-induced polarization. Journal of Magnetic Resonance, Vol. 296, pp. 85-92 (2018). DOI: 0.1016/j.jmr.2018.08.009, published online 29 August 2018.

R. Nakaoka, D. A. Komarov, S. Matsumoto, and H. Hirata. Impact of the characteristic impedance of coaxial lines on the sensitivity of a 750-MHz electronically tunable EPR resonator. Applied Magnetic Resonance (2018). DOI: 10.1007/s00723-018-1001-6, published online 31 March 2018.

K. Matsumoto, S. Kishimoto, N. Devasahayam, G. V. R. Chandramouli, Y. Ogawa, S. Matsumoto, M. C. Krishna, S. Subramanian. EPR-based oximetric imaging: a combination of single point-based spatial encoding and T1 weighting. Magnetic Resonce in Medicine (2018) DOI: 10.1002/mrm.27182, published online 26 Mar 2018.

S. Kishimoto, K. Matsumoto, K. Saito, A. Enomoto, S. Matsumoto, J. B. Mitchell, N. Devasahayam, M. C. Krishna. Pulsed Electron Paramagnetic Resonance Imaging: Applications in the Studies of Tumor Physiology. Antioxidants and Redox Signaling (2018). DOI: 10.1089/ars.2017.7391, published online 9 January 2018.


H. Yasui, T. Kawai, S. Matsumoto, K. Saito, N. Devasahayam , J. B. Mitchell, K. Camphausen, O. Inanami, M. C. Krishna.Quantitative imaging of pO2 in orthotopic murine gliomas: hypoxia correlates with resistance to radiation. Free Radical Research, Vol. 51, No. 9-10, pp. 861-871 (2017). DOI: 10.1080/10715762.2017.1388506, published online 17 October 2017.

H. Sato-Akaba, M. C. Emoto, H. Hirata, and H. G. Fujii, Design and testing of a 750 MHz CW-EPR digital console for small animal imaging, Journal of Magnetic Resonance, Vol. 284, pp. 48-58 (2017). DOI: 10.1016/j.jmr.2017.09.008, published online 20 September 2017.

Y. Takakusagi, S. Kishimoto, S. Naz, S. Matsumoto, K. Saito, C. P. Hart, J. B. Mitchell, M. C. Krishna. Radiotherapy Synergizes with the Hypoxia-Activated Prodrug Evofosfamide: In Vitro and In Vivo Studies. Antioxidants and Redox Signaling, Vol. 28, No. 2, pp. 131-140 (2018), DOI: 10.1089/ars.2017.7106, published online 8 September 2018.

T. Amida, R. Nakaoka, D. A. Komarov, K. Yamamoto, O. Inanami, S. Matsumoto, and H. Hirata, A 750-MHz electronically tunable resonator using microstrip line couplers for electron paramagnetic resonance imaging of a mouse tumor-bearing leg, IEEE Transactions on Biomedical Engineering, Vol. 65, No. 5, pp. 1124-1132 (2018). DOI: 10.1109/TBME.2017.2743232, published online 23 August 2017.

M. Umakoshi, I. Yamaguchi, H. Hirata, N. Kunugita, B. B. Williams, H. M. Swartz, and M. Miyake, In vivo electron paramagnetic resonance tooth dosimetry: Dependence of radiation-induced signal amplitude on the enamel thickness and surface area of ex vivo human teeth,Health Physics, Vol. 113, No. 4, pp. 262-270 (2017). DOI: 10.1097/HP.0000000000000698, published online 7 August 2017.

D. A. Komarov and H. Hirata, Fast backprojection-based reconstruction of spectral-spatial EPR images from projections with the constant sweep of a magnetic field, Journal of Magnetic Resonance, Vol. 281, pp. 44-50 (2017). DOI: 10.1016/j.jmr.2017.05.005, published online 17 May 2017.

H. Kubota, D. A. Komarov, H. Yasui, S. Matsumoto, O. Inanami, I. A. Kirilyuk, V. V. Khramtsov, and H. Hirata, Feasibility of in vivo three-dimensional T2* mapping using dicarboxy-PROXYL and CW-EPR-based single-point imaging, Magnetic Resonance Materials in Physics, Biology and Medicine, Vol. 30, No. 3, pp. 291-298 (2017). DOI: 10.1007/s10334-016-0606-8, published online 6 January 2017.


X. Wang, M. Emoto, Y. Miyake, K. Itto, S. Xu, H. Fujii, H. Hirata, and H. Arimoto, Novel blood-brain-barrier-permeable spin probe for in vivo electron paramagnetic resonance imaging, Bioorganic & Medicinal Chemistry Letters, Vol. 26, No. 20, pp. 4947-4949 (2016), DOI: 10.1016/j.bmcl.2016.09.010, published online 6 September 2016.

M. Miyake, Y. Nakai, I. Yamaguchi, H. Hirata, N. Kunugita, B. B. Williams, and H. M. Swartz, In-vivo radiation doeimstry using portable L band EPR: On-site measurement of volunteers in Fukushima prefecture, Japan, Radiation Protection Dosimetry, Vol. 172, No. 1-3, pp. 248-253 (2016), DOI:10.1093/rpd/ncw214, published online 13 August 2016.


A. Enomoto, K. Saito, S. Subramanian, M. C. Krishna, H. Hirata, and N. Devasahayam, Passive decoupling due to low Q-factors of four-channel coils in 300-MHz pulsed EPR imaging, Applied Magnetic Resonance, Vol. 46, No. 6, pp. 671-683 (2015), DOI: 10.1007/s00723-015-0671-6, published online 26 March 2015.


W. Takahashi, Y. Miyake, and H. Hirata, Artifact suppression in electron paramagnetic resonance imaging of 14N- and 15N-labeled nitroxyl radicals with asymmetric absorption spectra, Journal of Magnetic Resonance, Vol. 247, pp. 31-37 (2014), DOI: 10.1016/j.jmr.2014.08.001, published online 20 August 2014.

W. Takahashi, A. A. Bobko, I. Dhimitruka, H. Hirata, J. L. Zweier, A. Samouilov, and V. V. Khramtsov, Proton-electron double-resonance imaging of pH using phosphonated trityl probe, Applied Magnetic Resonance, Vol. 45, No. 9, pp. 817-826 (2014), published online 17 August 2014.