Masaki Nii

1.9k total citations
61 papers, 1.1k citations indexed

About

Masaki Nii is a scholar working on Cardiology and Cardiovascular Medicine, Epidemiology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Masaki Nii has authored 61 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Cardiology and Cardiovascular Medicine, 37 papers in Epidemiology and 23 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Masaki Nii's work include Congenital Heart Disease Studies (33 papers), Cardiac Valve Diseases and Treatments (16 papers) and Cardiovascular Function and Risk Factors (14 papers). Masaki Nii is often cited by papers focused on Congenital Heart Disease Studies (33 papers), Cardiac Valve Diseases and Treatments (16 papers) and Cardiovascular Function and Risk Factors (14 papers). Masaki Nii collaborates with scholars based in Japan, Canada and United States. Masaki Nii's co-authors include Kevin S. Roman, Edgar Jaeggi, Jeffrey F. Smallhorn, Kazuhiro Mori, Yasunobu Hayabuchi, Andrew N. Redington, John‏ Kingdom, Katsunori Tatara, Yasuhiro Kuroda and Vitor Guerra and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and PLoS ONE.

In The Last Decade

Masaki Nii

57 papers receiving 1.1k citations

Peers

Countries citing papers authored by Masaki Nii

Since Specialization

Citations

This map shows the geographic impact of Masaki Nii'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 Masaki Nii with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masaki Nii more than expected).

Fields of papers citing papers by Masaki Nii

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masaki Nii. 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 Masaki Nii. The network helps show where Masaki Nii may publish in the future.

Co-authorship network of co-authors of Masaki Nii

This figure shows the co-authorship network connecting the top 25 collaborators of Masaki Nii. A scholar is included among the top collaborators of Masaki Nii 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 Masaki Nii. Masaki Nii 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	Outcomes of hypertrophic cardiomyopathy in Japanese children: a retrospective cohort study 2021 ·Heart and Vessels ·Hiroki Mori, Tadahiro Yoshikawa, H. Kimura, Hiroshi Ono, Hitoshi Kato, Yasuo Ono, Masaki Nii, Takahiro Shindo, Ryo Inuzuka, Hitoshi Horigome, Masaru Miura, Keiichi Hirono, Tomio Kobayashi, Shigetoyo Kogaki, Yoshiyuki Furutani, Toshio Nakanishi	1
2	Hepatopulmonary syndrome revealed via echocardiography in the upright position 2020 ·Pediatrics International ·(unknown), Masaki Nii, Koji Fukumoto, Hiromu Miyake, Naoto Urushihara	2
3	Recommendations for Multimodality Assessment of Congenital Coronary Anomalies: A Guide from the American Society of Echocardiography 2020 ·Journal of the American Society of Echocardiography ·Peter C. Frommelt, Leo Lopez, V. Vivian Dimas, Benjamin W. Eidem, Bin Han, H. Helen Ko, Richard Lorber, Masaki Nii, Beth F. Printz, Shubhika Srivastava, Anne Marie Valente, Meryl S. Cohen	53
4	Successful transcatheter closure of coronary artery fistula in a patient with anomalous aortic origin of the left main coronary artery from the right aortic sinus 2019 ·Journal of Cardiology Cases ·(unknown), Sung‐Hae Kim, Masaki Nii, Keisuke Sato, (unknown), (unknown), Yasuhiko Tanaka	0
5	Antenatal Therapy for Fetal Supraventricular Tachyarrhythmias 2019 ·Journal of the American College of Cardiology ·Takekazu Miyoshi, Yasuki Maeno, Toshimitsu Hamasaki, Noboru Inamura, Satoshi Yasukochi, Motoyoshi Kawataki, Hitoshi Horigome, Hitoshi Yoda, Mio Taketazu, Masaki Nii, Akiko Hagiwara, Hitoshi Kato, Wataru Shimizu, Isao Shiraishi, Heima Sakaguchi, Keiko Ueda, Shinji Katsuragi, Haruko Yamamoto, Haruhiko Sago, Tomoaki Ikeda	44
6	New insight into the intraventricular pressure gradient as a sensitive indicator of diastolic cardiac dysfunction in patients with childhood cancer after anthracycline therapy 2019 ·Heart and Vessels ·(unknown), Ken Takahashi, (unknown), Maki Kobayashi, Mariko Yamada, Katsumi Akimoto, (unknown), Junya Fujimura, Masahiro Saito, Masaki Nii, Keiichi Itatani, Toshiaki Shimizu	19
7	Role of BRCA1-associated protein (BRAP) variant in childhood pulmonary arterial hypertension 2019 ·PLoS ONE ·Ayako Nagai, Masaki Shintani, Hiroki Sato, Tomotaka Nakayama, Masaki Nii, (unknown), Toru Furukawa, Amer A. Rana, Yoshiyuki Furutani, Kei Inai, Shigeaki Nonoyama, Toshio Nakanishi	2
8	Measurement of Aortic Valve Coaptation and Effective Height Using Echocardiography in Patients with Ventricular Septal Defects and Aortic Valve Prolapse 2017 ·Pediatric Cardiology ·Satoru Iwashima, Hiroki Uchiyama, Takamichi Ishikawa, Kiyohiro Takigiku, Ken Takahashi, Manatomo Toyono, Nao Inoue, Masaki Nii	3
9	A premature low-birth-weight infant with congenital complete atrioventricular block and myocarditis successfully treated by staged pacemaker implantation 2016 ·Cardiology in the Young ·(unknown), Masaki Nii, Yasuhiko Tanaka	1
10	Cardiac fetal ultrasonographic parameters for predicting outcomes of isolated left-sided congenital diaphragmatic hernia 2015 ·Journal of Pediatric Surgery ·Masaya Yamoto, Yasuhiko Tanaka, Koji Fukumoto, Hiromu Miyake, Hideaki Nakajima, (unknown), (unknown), Masaki Nii, Hisayoshi Kawahara, Naoto Urushihara	16
11	Circumstances and Outcomes of Out-Of-Hospital Cardiac Arrest in Elementary and Middle School Students in the Era of Public-Access Defibrillation:– Implications for Emergency Preparedness in Schools – 2014 ·Japanese Circulation Journal-english Edition ·Yoshihide Mitani, Kunio Ohta, Fukiko Ichida, Masaki Nii, Yoshio Arakaki, Hiroya Ushinohama, Tsutomu Takahashi, Hiroyuki Ohashi, (unknown), Eitaro Fujii, Ken Ishikura, Shigeru Tateno, Seiichi Sato, Tsugutoshi Suzuki, Takashi Higaki, Mari Iwamoto, Masao Yoshinaga, Masami Nagashima, Naokata Sumitomo	3
12	Prenatally diagnosed hypoplastic left heart syndrome with intact atrial septum and ventriculocoronary arterial fistula 2009 ·Journal of Echocardiography ·Noriko Kitamura, Masaki Nii, Sung‐Hae Kim, (unknown), Yasuhiko Tanaka, Kisaburo Sakamoto, Yasuo Ono	2
13	Short and Midterm Results of Aortic Valve Cusp Extension in the Treatment of Children With Congenital Aortic Valve Disease 2006 ·The Annals of Thoracic Surgery ·Bahaaldin Alsoufi, Tara Karamlou, Timothy J. Bradley, William G. Williams, Glen S. Van Arsdell, John G. Coles, Jeffrey Smallhorn, Masaki Nii, Vitor Guerra, Christopher A. Caldarone	34
14	Insight Into Normal Mitral and Tricuspid Annular Dynamics in Pediatrics: A Real-time Three-dimensional Echocardiographic Study 2005 ·Journal of the American Society of Echocardiography ·Masaki Nii, Kevin S. Roman, Christopher K. Macgowan, Jeffrey F. Smallhorn	28
15	1057-201 Fetal aortic stenosis with apex-forming left ventricle at time of diagnosis: Determinants of biventricular repair 2004 ·Journal of the American College of Cardiology ·Masaki Nii, (unknown), Kevin S. Roman, Edgar Jaeggi	1
16	Retrograde holodiastolic flow in the abdominal aorta detected by pulsed Doppler echocardiography in patients with Kawasaki disease 2000 ·European Journal of Pediatrics ·Kazuhiro Mori, Yasunobu Hayabuchi, Yasuhiro Kuroda, Masaki Nii, Yasuhito Yuasa, (unknown)	7
17	Cyclic variation of integrated ultrasound backscatter in the left ventricle during the early neonatal period 2000 ·American Heart Journal ·(unknown), (unknown), Masaki Nii, Yasunobu Hayabuchi, (unknown), Hiroshi Kitahata	7
18	Successive follow-up of chest computed tomography in patients with Mycobacterium avium-intracellulare complex 1999 ·Respiratory Medicine ·Yuka Obayashi, Jiro Fujita, Ichizo Suemitsu, Tadashi Kamei, Masaki Nii, J Takahara	40
19	Cerebral infarction in a patient with congenital complete heart block 1998 ·Clinical Cardiology ·Yasunobu Hayabuchi, Suguru Matsuoka, Masaki Nii, Hiroko Suzuya, Yasuhiro Kuroda	1
20	Importance of recall and follow‐up screening for chronic hepatitis C in children receiving blood products prior to 1990 in Japan 1994 ·Pediatrics International ·Suguru Matsuoka, (unknown), (unknown), Masahiro Kubo, Masaki Nii, (unknown), (unknown)	1

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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