Artificial Intelligence in Medical Imaging Development

2021

Semi-quantitative assessment optimized the grading of pulmonary aspiration on salivagram in children

Shao, F., Zhao, X., Toyama, H., Ichihara, T., Zhuang, H., Zhao, R., Kung, B. T., Ng, K. S., Zhang, Z. & Wu, H., 03-2021, In: Annals of Nuclear Medicine. 35, 3, p. 321-327 7 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

2020

Measurement of effective renal plasma flow using model analysis of dynamic CT in the preoperative evaluation of the renal transplant donors

Kataoka, Y., Nishio, H., Matsukiyo, R., Kato, R., Hasegawa, M., Kenmochi, T., Shiroki, R., Toyama, H., Ichihara, T. & Kobayashi, S., 2020, In: Fujita Medical Journal. 6, 3, p. 73-80 8 p.

Research output: Contribution to journal › Article › peer-review

2019

Clinical utility of the normal database of ¹²³I-iodoamphetamine brain perfusion single photon emission computed tomography for statistical analysis using computed tomography-based attenuation correction: a multicenter study

Yamazaki, T., Inui, Y., Ichihara, T., Uno, M., Ota, S., Toyoda, A., Ishiguro, M., Kato, T., Ito, K. & Toyama, H., 01-11-2019, In: Annals of Nuclear Medicine. 33, 11, p. 835-841 7 p.

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

2018

CT-based attenuation correction and resolution compensation for I-123 IMP brain SPECT normal database: a multicenter phantom study

Inui, Y., Ichihara, T., Uno, M., Ishiguro, M., Ito, K., Kato, K., Sakuma, H., Okazawa, H. & Toyama, H., 01-06-2018, In: Annals of Nuclear Medicine. 32, 5, p. 311-318 8 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

2016

New catheter-based calibration method for 2D X-ray angiography myocardial perfusion

Sakaguchi, T., Iwai, H., Nagae, R., Natsume, T., Ichihara, T. & Yagi, T., 2016, In: IEEJ Transactions on Electronics, Information and Systems. 136, 9, p. 1305-1311 7 p.

Research output: Contribution to journal › Article › peer-review

Underestimation of myocardial blood flow by dynamic perfusion CT: Explanations by two-compartment model analysis and limited temporal sampling of dynamic CT

Ishida, M., Kitagawa, K., Ichihara, T., Natsume, T., Nakayama, R., Nagasawa, N., Kubooka, M., Ito, T., Uno, M., Goto, Y., Nagata, M. & Sakuma, H., 01-06-2016, In: Journal of Cardiovascular Computed Tomography. 10, 3, p. 207-214 8 p.

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

2015

A technique for quantitative measurement of myocardial blood flow using a combination of bolus tracking and time-registered helical multidetector CT angiography during adenosine stress

Ichihara, T., George, R. T., Mather, R., Lima, J. A. C. & Lardo, A. C., 2015, In: Fujita Medical Journal. 1, 1, p. 9-14 6 p.

Research output: Contribution to journal › Article › peer-review

Development of a method for automated and stable myocardial perfusion measurement using coronary X-ray angiography images

Sakaguchi, T., Ichihara, T., Natsume, T., Yao, J., Yousuf, O., Trost, J. C., Lima, J. A. C. & George, R. T., 29-06-2015, In: International Journal of Cardiovascular Imaging. 31, 5, p. 905-914 10 p.

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Evaluation of ⁸⁵Sr/⁸⁹Sr spect using SPECT/CT system

Ota, S., Toyama, H., Uno, M., Ishiguro, M., Natsume, T., Yokoyama, S. & Ichihara, T., 2015, In: Japanese Journal of Clinical Radiology. 60, 2, p. 304-310 7 p.

Research output: Contribution to journal › Article › peer-review

Theoretical considerations in measurement of time discrepancies between input and myocardial time-signal intensity curves in estimates of regional myocardial perfusion with first-pass contrast-enhanced MRI

Natsume, T., Ishida, M., Kitagawa, K., Nagata, M., Sakuma, H. & Ichihara, T., 11-2015, In: Magnetic Resonance Imaging. 33, 9, p. 1059-1065 7 p., 8392.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

2014

⁸⁹Sr bremsstrahlung single photon emission computed tomography using a gamma camera for bone metastases

Ota, S., Uno, M., Kato, M., Ishiguro, M., Natsume, T., Kikukawa, K., Tadokoro, M., Ichihara, T. & Toyama, H., 02-2014, In: Annals of Nuclear Medicine. 28, 2, p. 112-119 8 p.

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Development of a theory for generating regional cardiac perfusion images during coronary angiography in the coronary angiography lab

Sakaguchi, T., Ichihara, T., Trost, J. C., Yousuf, O., Lima, J. A. C., Yao, J. & George, R. T., 01-2014, In: International Journal of Cardiovascular Imaging. 30, 1, p. 9-19 11 p.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

2011

A trial of⁸⁹Sr bremsstrahlung SPECT

Ota, S., Toyama, H., Uno, M., Kato, M., Ishiguro, M., Natsume, T., Ito, F., Kikukawa, K., Tadokoro, M., Ichihara, T. & Katada, K., 05-2011, In: Kakuigaku. 48, 2, p. 101-107 7 p.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Quantification of myocardial blood flow using model based analysis of first-pass perfusion MRI: Extraction fraction of Gd-DTPA varies with myocardial blood flow in human myocardium

Ishida, M., Ichihara, T., Nagata, M., Ishida, N., Takase, S., Kurita, T., Ito, M., Takeda, K. & Sakuma, H., 11-2011, In: Magnetic Resonance in Medicine. 66, 5, p. 1391-1399 9 p.

Research output: Contribution to journal › Article › peer-review

Open Access

29 Citations (Scopus)

Quantitative analysis of first-pass contrast-enhanced myocardial perfusion multidetector CT using a Patlak plot method and extraction fraction correction during adenosine stress

Ichihara, T., George, R. T., Silva, C., Lima, J. A. C. & Lardo, A. C., 02-2011, In: IEEE Transactions on Nuclear Science. 58, 1 PART 1, p. 133-138 6 p., 5654617.

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

2010

A method for reconstructing the arterial input function during helical CT: Implications for myocardial perfusion distribution imaging

George, R. T., Ichihara, T., Lima, J. A. C. & Lardo, A. C., 05-2010, In: Radiology. 255, 2, p. 396-404 9 p.

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

2009

Quantitative analysis of first-pass contrast-enhanced myocardial perfusion MRI using a Patlak plot method and blood saturation correction

Ichihara, T., Ishida, M., Kitagawa, K., Ichikawa, Y., Natsume, T., Yamaki, N., Maeda, H., Takeda, K. & Sakuma, H., 08-2009, In: Magnetic Resonance in Medicine. 62, 2, p. 373-383 11 p.

Research output: Contribution to journal › Article › peer-review

Open Access

49 Citations (Scopus)

Quantitative assessment of regional systolic and diastolic functions and temporal heterogeneity of myocardial contraction in patients with myocardial infarction using cine magnetic resonance imaging and Fourier fitting

Natsume, T., Amano, T., Takehara, Y., Ichihara, T., Takeda, K. & Sakuma, H., 12-2009, In: Magnetic Resonance Imaging. 27, 10, p. 1440-1446 7 p.

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

2006

Multidetector Computed Tomography Myocardial Perfusion Imaging During Adenosine Stress

George, R. T., Silva, C., Cordeiro, M. A. S., DiPaula, A., Thompson, D. R., McCarthy, W. F., Ichihara, T., Lima, J. A. C. & Lardo, A. C., 04-07-2006, In: Journal of the American College of Cardiology. 48, 1, p. 153-160 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

248 Citations (Scopus)

2004

Attenuation correction using asymmetric fanbeam transmission CT on two-head SPECT system

Kojima, A., Tomiguchi, S., Kawanaka, K., Utsunomiya, D., Shiraishi, S., Nakaura, T., Katsuda, N., Matsumoto, M., Yamashita, Y., Motomura, N. & Ichihara, T., 06-2004, In: Annals of Nuclear Medicine. 18, 4, p. 315-322 8 p.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Attenuation correction using combination of a parallel hole collimator and an uncollimated non-uniform line array source

Kojima, A., Kawanaka, K., Nakaura, T., Shiraishi, S., Utsunomiya, D., Katsuda, N., Tomiguchi, S., Yamashita, Y., Matsumoto, M., Motomura, N. & Ichihara, T., 07-2004, In: Annals of Nuclear Medicine. 18, 5, p. 385-390 6 p.

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

2002

Differences in fatty acid metabolic disorder between ischemic myocardium and doxorubicin-induced myocardial damage: Assessment using BMIPP dynamic SPECT with analysis by the Rutland method

Kitagawa, K., Takeda, K., Saito, K., Okamoto, S., Makino, K., Maeda, H. & Ichihara, T., 01-10-2002, In: Journal of Nuclear Medicine. 43, 10, p. 1286-1294 9 p.

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

2001

Binding rate constant of Tc-99m DTPA galactosyl human serum albumin measured by quantitative dynamic SPECT - Clinical evaluation as a total and regional liver function test

Yamakado, K., Matsumura, K., Takashiba, Y., Nakatsuka, A., Kitano, T., Ichihara, T., Maeda, H., Takase, K. & Takeda, K., 2001, In: Annals of Nuclear Medicine. 15, 3, p. 191-198 8 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

2000

Detection of doxorubicin cardiotoxicity by using iodine-123 BMIPP early dynamic SPECT: Quantitative evaluation of early abnormality of fatty acid metabolism with the Rutland method

Saito, K., Takeda, K., Okamoto, S., Okamoto, R., Makino, K., Tameda, Y., Nomura, Y., Maeda, H., Ichihara, T. & Nakano, T., 11-2000, In: Journal of Nuclear Cardiology. 7, 6, p. 553-561 9 p.

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Quantitative planar imaging method for measurement of renal activity by using a conjugate-emission image and transmission data

Kojima, A., Ohyama, Y., Tomiguchi, S., Kira, M., Matsumoto, M., Takahashi, M., Motomura, N. & Ichihara, T., 03-2000, In: Medical Physics. 27, 3, p. 608-615 8 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

1999

Effects of scatter and attenuation correction on quantitative analysis of β-cit brain spet

Hashimoto, J., Kubo, A., Sasaki, T., Amano, T., Fukuuchi, Y., Ogawa, K., Motomura, N. & Ichihara, T., 02-1999, In: Nuclear medicine communications. 20, 2, p. 159-166 8 p.

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Feasibility of simultaneous stress ^99mTc-sestamibi/rest ²⁰¹Tl dual-isotope myocardial perfusion SPECT in the detection of coronary artery disease

Nakamura, M., Takeda, K., Ichihara, T., Motomura, N., Shimizu, H., Saito, Y., Nomura, Y., Isaka, N., Konishi, T. & Nakano, T., 06-1999, In: Journal of Nuclear Medicine. 40, 6, p. 895-903 9 p.

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Practical compensation method of downscattered component due to high energy photon in ¹²³I imaging

Motomura, N., Ichihara, T., Takayama, T., Aoki, S., Kubo, H. & Takeda, K., 1999, In: Kakuigaku. 36, 9, p. 997-1005 9 p.

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

1998

Application of transmission scan-based attenuation compensation to scatter-corrected thallium-201 myocardial single-photon emission tomographic images

Hashimoto, J., Ogawa, K., Kubo, A., Ichihara, T., Motomura, N., Takayama, T., Iwanaga, S., Mitamura, H. & Ogawa, S., 1998, In: European Journal of Nuclear Medicine. 25, 2, p. 120-127 8 p.

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Increased lung uptake of iodine-123-MIBG in diabetics with sympathetic nervous dysfunction

Murashima, S., Takeda, K., Matsumura, K., Yamakado, K., Sakuma, H., Kitano, T., Nakagawa, T., Ichihara, T., Yamakado, T. & Murata, K., 02-1998, In: Journal of Nuclear Medicine. 39, 2, p. 334-338 5 p.

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Simultaneous acquisition of iodine-123 emission and technetium-99m transmission data for quantitative brain single-photon emission tomographic imaging

Ogasawara, K., Hashimoto, J., Ogawa, K., Kubo, A., Motomura, N., Hasegawa, H. & Ichihara, T., 1998, In: European Journal of Nuclear Medicine. 25, 11, p. 1537-1544 8 p.

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Ultra high resolution pinhole SPECT for small animal study

Ogawa, K., Kawade, T., Nakamura, K., Kubo, A. & Ichihara, T., 1998, In: IEEE Transactions on Nuclear Science. 45, 6, p. 3122-3126 5 p.

Research output: Contribution to journal › Article › peer-review

62 Citations (Scopus)

1997

Development of a lead x-ray compensation method in simultaneous tl-201 spect & tc-99m tct using a flood source

Motomura, N., Ichihara, T., Hasegawa, H., Ogawa, K., Hashimoto, J. & Kubo, A., 1997, In: IEEE Transactions on Nuclear Science. 44, 6 PART 2, p. 2459-2464 6 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Estimation of scattered photons in gamma ray transmission CT using Monte Carlo simulations

Ogawa, K., Kawamura, Y., Kubo, A. & Ichihara, T., 1997, In: IEEE Transactions on Nuclear Science. 44, 3 PART 2, p. 1225-1230 6 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Quantitative analysis of scatter- and attenuation-compensated dynamic single-photon emission tomography for functional hepatic imaging with a receptor-binding radiopharmaceutical

Ichihara, T., Maeda, H., Yamakado, K., Motomura, N., Matsumura, K., Takeda, K. & Nakagawa, T., 1997, In: European Journal of Nuclear Medicine. 24, 1, p. 59-67 9 p.

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Scatter and attenuation correction in technetium-99m brain SPECT

Hashimoto, J., Kubo, A., Ogawa, K., Amano, T., Fukuuchi, Y., Motomura, N. & Ichihara, T., 01-1997, In: Journal of Nuclear Medicine. 38, 1, p. 157-162 6 p.

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

1996

Evaluation of SPET quantification of simultaneous emission and transmission imaging of the brain using a multidetector SPET system with the TEW scatter compensation method and fan-beam collimation

Ichihara, T., Motomura, N., Ogawa, K., Hasegawa, H., Hashimoto, J. & Kubo, A., 1996, In: European Journal of Nuclear Medicine. 23, 10, p. 1292-1299 8 p.

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Scatter and attenuation correction for quantitative myocardial SPECT imaging

Hashimoto, J., Sammiya, T., Ogasawara, K., Kubo, A., Ogawa, K., Ichihara, T., Motomura, N. & Hasegawa, H., 1996, In: Kakuigaku. 33, 9, p. 1015-1019 5 p.

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

1995

Quantitative brain SPECT imaging with scatter and attenuation compensation: Comparison of sequential and simultaneous acquisition of transmission and emission data

Hashimoto, J., Sammiya, T., Kubo, A., Ogawa, K., Ichihara, T. & Motomura, N., 1995, In: Kakuigaku. 32, 12, p. 1369-1374 6 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

1994

Exercise and rest myocardial scintigraphy with ²⁰¹TlCl/^99mTc-MIBI dual energy acquisition using triple-energy window scatter correction

Hashimoto, J., Matsuda, M., Sammiya, T., Nakamura, K., Tsukatani, Y., Kubo, A., Ogawa, K., Takahashi, E., Mitamura, H., Handa, S., Ogawa, S. & Ichihara, T., 1994, In: Kakuigaku. 31, 11, p. 1365-1372 8 p.

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

1993

Compton scatter compensation using the triple-energy window method for single- and dual-isotope SPECT

Ichihara, T., Ogawa, K., Motomura, N., Kubo, A. & Hashimoto, S., 1993, In: Journal of Nuclear Medicine. 34, 12, p. 2216-2221 6 p.

Research output: Contribution to journal › Article › peer-review

279 Citations (Scopus)

High spatial resolution reconstruction technique for spect using a fan-beam collimator

Ichihara, T., Nambu, K. & Motomura, N., 08-1993, In: IEEE Transactions on Nuclear Science. 40, 4, p. 1149-1157 9 p.

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

1992

A simulation of dynamic SPECT using radiopharmaceuticals with rapid clearance

Nakajima, K., Shuke, N., Taki, J., Ichihara, T., Motomura, N., Bunko, H. & Hisada, K., 1992, In: Journal of Nuclear Medicine. 33, 6, p. 1200-1206 7 p.

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

High-resolution cardiac SPET study using fanbeam collimators in infants

Nakajima, K., Taki, J., Matsudaira, M., Ichihara, T., Ohno, T. & Hisada, K., 08-1992, In: Nuclear medicine communications. 13, 8, p. 604-608 5 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Serial change of iodine-123 metaiodobenzylguanidine (MIBG) myocardial concentration in patients with dilated cardiomyopathy

Yamakado, K., Takeda, K., Kitano, T., Nakagawa, T., Futagami, Y., Konishi, T., Hamada, M., Nakano, T. & Ichihara, T., 04-1992, In: European Journal of Nuclear Medicine. 19, 4, p. 265-270 6 p.

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

1991

A Practical Method for Position-Dependent Compton-Scatter Correction in Single Photon Emission CT

Ogawa, K., Harata, Y., Ichihara, T., Kubo, A. & Hashimoto, S., 09-1991, In: IEEE Transactions on Medical Imaging. 10, 3, p. 408-412 5 p.

Research output: Contribution to journal › Article › peer-review

521 Citations (Scopus)

Dynamic acquisition with a three-headed SPECT system: Application to technetium 99m-SQ30217 myocardial imaging

Nakajima, K., Taki, J., Bunko, H., Matsudaira, M., Muramori, A., Matsunari, I., Hisada, K. & Ichihara, T., 1991, In: Journal of Nuclear Medicine. 32, 6, p. 1273-1277 5 p.

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Myocardial perfusion imaging with ^99mTc-SQ30217: Application of three-headed SPECT system

Nakajima, K., Taki, J., Bunko, H., Muramori, A., Matunari, I., Konishi, K., Hisada, K. & Ichihara, T., 1991, In: Kakuigaku. 28, 2, p. 127-133 7 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

The influence of the time activity variation on dynamic SPECT images in camera based SPECT

Maeda, H., Takeda, K., Matsumura, K., Nakagawa, T., Kitano, T., Ejiri, K., Kondou, T., Takeuchi, A., Toyama, H., Takeshita, G., Koga, S. & Ichihara, T., 1991, In: Kakuigaku. 28, 1, p. 27-34 8 p.

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

1990

A three-headed SPECT system with high resolution and high sensitivity: Application to myocardial imaging

Nakajima, K., Taki, J., Hisada, K., Matsudaira, M., Bunko, H., Ichihara, T., Fujiki, Y., Iwasaki, T. & Kubota, M., 1990, In: Kakuigaku. 27, 5, p. 493-497 5 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Artificial Intelligence in Medical Imaging Development

Research output

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