Naohiko Oku

1.6k total citations
59 papers, 1.3k citations indexed

About

Naohiko Oku is a scholar working on Pulmonary and Respiratory Medicine, Radiology, Nuclear Medicine and Imaging and Psychiatry and Mental health. According to data from OpenAlex, Naohiko Oku has authored 59 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Pulmonary and Respiratory Medicine, 17 papers in Radiology, Nuclear Medicine and Imaging and 14 papers in Psychiatry and Mental health. Recurrent topics in Naohiko Oku's work include Cerebrovascular and Carotid Artery Diseases (19 papers), Medical Imaging Techniques and Applications (13 papers) and Advanced MRI Techniques and Applications (10 papers). Naohiko Oku is often cited by papers focused on Cerebrovascular and Carotid Artery Diseases (19 papers), Medical Imaging Techniques and Applications (13 papers) and Advanced MRI Techniques and Applications (10 papers). Naohiko Oku collaborates with scholars based in Japan, United States and India. Naohiko Oku's co-authors include Jun Hatazawa, Kazuo Hashikawa, Kazuo Kitagawa, Masashi Takasawa, Tsunehiko Nishimura, Masatsugu Hori, Masao Imaizumi, Masayasu Matsumoto, Yasuhiro Osaki and Hiroshi Moriwaki and has published in prestigious journals such as NeuroImage, Stroke and Brain Research.

In The Last Decade

Naohiko Oku

59 papers receiving 1.2k citations

Peers

Countries citing papers authored by Naohiko Oku

Since Specialization

Citations

This map shows the geographic impact of Naohiko Oku's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Naohiko Oku with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Naohiko Oku more than expected).

Fields of papers citing papers by Naohiko Oku

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Naohiko Oku. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Naohiko Oku. The network helps show where Naohiko Oku may publish in the future.

Co-authorship network of co-authors of Naohiko Oku

This figure shows the co-authorship network connecting the top 25 collaborators of Naohiko Oku. A scholar is included among the top collaborators of Naohiko Oku based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Naohiko Oku. Naohiko Oku is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Topics of nuclear medicine research in Europe 2017 ·Annals of Nuclear Medicine ·Masayuki Inubushi, Tomohiro Kaneta, Takayoshi Ishimori, Etsuko Imabayashi, Atsutaka Okizaki, Naohiko Oku	5
2	Clinical impact of “true whole-body” 18F-FDG PET/CT: lesion frequency and added benefit in distal lower extremities 2014 ·Annals of Nuclear Medicine ·Shuji Kawata, Masao Imaizumi, (unknown), Naohiko Oku	5
3	Functional brain areas associated with manipulation of a prehensile tool: A PET study 2009 ·Human Brain Mapping ·(unknown), Tomoko Aoki, Naohiko Oku, Yasuyuki Kimura, Jun Hatazawa, Hiroshi Kinoshita	14
4	MRI-Based Correction for Partial-Volume Effect Improves Detectability of Intractable Epileptogenic Foci on ¹²³I-Iomazenil Brain SPECT Images 2008 ·Journal of Nuclear Medicine ·Hiroki Kato, Eku Shimosegawa, Naohiko Oku, Kazuo Kitagawa, Haruhiko Kishima, Youichi Saitoh, Amami Kato, Toshiki Yoshimine, Jun Hatazawa	15
5	Hemodynamic Influences of Azelnidipine, a Novel Calcium Channel Blocker, on Cerebral Circulation in Hypertensive Patients with Ischemic White Matter Lesions 2008 ·Hypertension Research ·Yasuyuki Kimura, Kazuo Kitagawa, Naohiko Oku, Katsufumi Kajimoto, Hiroki Kato, Makiko Tanaka, Manabu Sakaguchi, Hidetaka Hougaku, Saburo Sakoda, Jun Hatazawa	6
6	Differential brain processing of audiovisual sexual stimuli in men: Comparative positron emission tomography study of the initiation and maintenance of penile erection during sexual arousal 2007 ·NeuroImage ·Yasushi Miyagawa, Akira Tsujimura, Kazutoshi Fujita, Yasuhiro Matsuoka, Tohru Takahashi, Tetsuya Takao, Shingo Takada, Kiyomi Matsumiya, Yasuhiro Osaki, Masashi Takasawa, Naohiko Oku, Jun Hatazawa, Shigeo Kaneko, Äkïhïko Okuyama	46
7	Crossed cerebellar diaschisis: a positron emission tomography study withl-[methyl-11C]methionine and 2-deoxy-2-[18F]fluoro-d-glucose 2007 ·Annals of Nuclear Medicine ·Katsufumi Kajimoto, Naohiko Oku, Yasuyuki Kimura, Hiroki Kato, Makiko Tanaka, Yasukazu Kanai, Kazuo Kitagawa, Motohiko Maruno, Toshiki Yoshimine, Masatsugu Hori, Jun Hatazawa	28
8	Hemodynamic Influences of Losartan on the Brain in Hypertensive Patients 2005 ·Hypertension Research ·Naohiko Oku, Kazuo Kitagawa, Masao Imaizumi, Masashi Takasawa, (unknown), Yasuyuki Kimura, Katsufumi Kajimoto, Masayasu Matsumoto, Masatsugu Hori, Jun Hatazawa	26
9	Neural mechanism of residual inhibition of tinnitus in cochlear implant users 2005 ·Neuroreport ·Yasuhiro Osaki, Hiroshi Nishimura, Masashi Takasawa, Masao Imaizumi, Takayuki Kawashima, Takako Iwaki, Naohiko Oku, Kazuo Hashikawa, Katsumi Doi, Tsunehiko Nishimura, Jun Hatazawa, Takeshi Kubo	62
10	Neural basis of fear conditioning induced by video clip: Positron emission tomography study 2005 ·Psychiatry and Clinical Neurosciences ·(unknown), Hiromasa Tokunaga, Yoshitaka Ikejiri, Hiroaki Kazui, (unknown), Yoshihiro Masaki, (unknown), (unknown), Naohiko Oku, Takashi Nishikawa, Masatoshi Takeda	13
11	Usefulness of noise adaptive non-linear Gaussian filter in FDG-PET study 2005 ·Annals of Nuclear Medicine ·(unknown), Kenya Murase, (unknown), (unknown), (unknown), Yukio Nakamura, Keishi Kitamura, Ichiro Higuchi, Naohiko Oku, Jun Hatazawa	5
12	The effect of tapping finger and mode differences on cortical and subcortical activities: a PET study 2004 ·Experimental Brain Research ·Tomoko Aoki, (unknown), Masashi Takasawa, Yasuhiro Osaki, Naohiko Oku, Jun Hatazawa, Hiroshi Kinoshita	32
13	Spectral analysis of99mTc-HMPAO for estimating cerebral blood flow: A comparison with H2 15O PET 2004 ·Annals of Nuclear Medicine ·Masashi Takasawa, Kenya Murase, Naohiko Oku, (unknown), (unknown), Masao Imaizumi, (unknown), Yasuhiro Osaki, Yasuyuki Kimura, Katsufumi Kajimoto, Kazuo Kitagawa, Masatsugu Hori, Jun Hatazawa	1
14	A Japanese Nationwide Survey on the FDG-PET Scans for Dementia: Analysis on the Predicted Costs and Benefits of FDG-PET for Early Diagnosis of Alzheimer 2003 ·RADIOISOTOPES ·Michio Senda, Yasuomi Ouchi, (unknown), Kenji Ishii, Shunya Ikeda, Seiji Nasu, Joji Kawabe, (unknown), Noriyuki Kato, Yasuo Kuwabara, Kengo Ito, Kohei Hayashida, Hidehiko Okazawa, Kimiichi Uno, Toshihiko Nakashima, Naohiko Oku, (unknown)	1
15	Interobserver variability of cerebral blood flow measurements obtained using spectral analysis and technetium-99m labeled compounds 2003 ·Annals of Nuclear Medicine ·Masashi Takasawa, Kenya Murase, Naohiko Oku, (unknown), (unknown), Yasuhiro Osaki, Masao Imaizumi, (unknown), Kazuo Kitagawa, Masatsugu Hori, Jun Hatazawa	1
16	Heterogeneity of cerebral blood flow in Alzheimer disease and vascular dementia. 2003 ·American Journal of Neuroradiology ·(unknown), Kenya Murase, Naohiko Oku, Masao Imaizumi, Masashi Takasawa, (unknown), Yasuyuki Kimura, Yoshitaka Ikejiri, Kazuo Kitagawa, Masatsugu Hori, Jun Hatazawa	31
17	Automatic determination of brain perfusion index for measurement of cerebral blood flow using spectral analysis and 99m Tc-HMPAO 2002 ·European Journal of Nuclear Medicine and Molecular Imaging ·Masashi Takasawa, Kenya Murase, Naohiko Oku, (unknown), Masao Imaizumi, (unknown), Yasuhiro Osaki, Asit K. Paul, Kazuo Kitagawa, Masayasu Matsumoto, Masatsugu Hori	3
18	Transient Crossed Cerebellar Diaschisis Following Thalamic Hemorrhage 2001 ·Journal of Neuroimaging ·Masashi Takasawa, Kazuo Hashikawa, Toshiho Ohtsuki, Masao Imaizumi, Naohiko Oku, Kazuo Kitagawa, Masatsugu Hori, Masayasu Matsumoto	6
19	Neural plasticity detected in short-and long-term cochlear implant users using PET 2000 ·Neuroreport ·Hiroshi Nishimura, Kazuteru Doi, Takako Iwaki, Kazuo Hashikawa, Naohiko Oku, (unknown), Taro Hasegawa, Akira Watanabe, Tsunehiko Nishimura, (unknown)	40
20	A validation study on the reproducibility of transcranial doppler velocimetry 1990 ·Ultrasound in Medicine & Biology ·Hiroaki Maeda, Hideki Etani, Nobuo Handa, Masafumi Tagaya, Naohiko Oku, (unknown), Masashi Naka, Naokazu Kinoshita, T Nukada, Ryuzo Fukunaga, Y Isaka, Masayasu Matsumoto, Kazufumi Kimura, Takenobu Kamada	78

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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