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Keiko Koyama

Observed names: K. KOYAMA, KEIKO KOYAMA
OpenAlex ID: A5111376862
PET and PET/CT using 18F-FDG in the diagnosis and management of cancer patients
2006 · Keigo Endo, Noboru Oriuchi, et al. · International Journal of Clinical Oncology · 131
Detection of Malignant Tumors: Whole-Body PET with Fluorine 18 α-Methyl Tyrosine versus FDG—Preliminary Study
2001 · Tomio Inoue, Keiko Koyama, et al. · Radiology · 81
Prevalence and Characterization of Pulmonary Vein Variants in Patients With Atrial Fibrillation Determined Using 3-Dimensional Computed Tomography
2008 · Kenichi Kaseno, Hiroshi Tada, et al. · The American Journal of Cardiology · 71
Uninterrupted vs. interrupted periprocedural direct oral anticoagulants for catheter ablation of atrial fibrillation: a prospective randomized single-centre study on post-ablation thrombo-embolic and haemorrhagic events
2018 · Kohki Nakamura, Shigeto Naito, et al. · EP Europace · 67
Three-Dimensional Visualization of the Coronary Venous System Using Multidetector Row Computed Tomography
2005 · Hiroshi Tada, Kenji Kurosaki, et al. · Circulation Journal · 59
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The Characteristics and Distribution of the Scar Tissue Predict Ventricular Tachycardia in Patients with Advanced Heart Failure
2009 · MIKI YOKOKAWA, HIROSHI TADA, et al. · Pacing and Clinical Electrophysiology · 42
Assessment of myocardial viability with a positron coincidence gamma camera using fluorodeoxyglucose in comparison with dedicated PET
2003 · M. TIAN, K. KOYAMA, et al. · Nuclear Medicine Communications · 36
Diagnosis of maxillofacial tumor withl-3-[18F]-fluoro-α-methyltyrosine (FMT) PET: a comparative study with FDG-PET
2007 · Mitsuyuki Miyakubo, Noboru Oriuchi, et al. · Annals of Nuclear Medicine · 33
Optimal local impedance drops for an effective radiofrequency ablation during cavo‐tricuspid isthmus ablation
2020 · Takehito Sasaki, Kohki Nakamura, et al. · Journal of Arrhythmia · 21
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Thickening of the Left Atrial Wall Shortly After Radiofrequency Ablation Predicts Early Recurrence of Atrial Fibrillation
2010 · Miki Yokokawa, Hiroshi Tada, et al. · Circulation Journal · 21
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Impact of the type of electroanatomic mapping system on the incidence of cerebral embolism after radiofrequency catheter ablation of left atrial tachycardias
2019 · Kohki Nakamura, Takehito Sasaki, et al. · Heart Rhythm · 20
Predictors of asymptomatic cerebral infarction associated with radiofrequency catheter ablation for atrial fibrillation using an irrigated-tip catheter
2012 · Tamotsu Sakamoto, Koji Kumagai, et al. · EP Europace · 20
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Nontransmural Scar Detected by Magnetic Resonance Imaging and Origin of Ventricular Tachycardia in Structural Heart Disease
2009 · MIKI YOKOKAWA, HIROSHI TADA, et al. · Pacing and Clinical Electrophysiology · 16
The Right to Left Atrial Volume Ratio Predicts Outcomes after Circumferential Pulmonary Vein Isolation of Longstanding Persistent Atrial Fibrillation
2016 · TAKEHITO SASAKI, KOHKI NAKAMURA, et al. · Pacing and Clinical Electrophysiology · 15
Olmesartan Improves Coronary Flow Reserve of Hypertensive Patients Using Coronary Magnetic Resonance Imaging Compared with Amlodipine
2012 · Takuji Toyama, Chizuru Sato, et al. · Cardiology · 15
Worldwide Radiation Dose in Coronary Artery Disease Diagnostic Imaging
2026 · Andrew J. Einstein, Michelle C. Williams, et al. · JAMA · 13
The change in the tissue characterization detected by magnetic resonance imaging after radiofrequency ablation of isthmus-dependent atrial flutter
2009 · Miki Yokokawa, Hiroshi Tada, et al. · International Journal of Cardiology · 13
Prevalence, characteristics, and predictors of endocardial and nonendocardial conduction gaps during local impedance‐guided extensive pulmonary vein isolation of atrial fibrillation with high‐resolution mapping
2021 · Kohki Nakamura, Takehito Sasaki, et al. · Journal of Cardiovascular Electrophysiology · 12
Incidence and characteristics of silent cerebral embolisms after radiofrequency‐based atrial fibrillation ablation: A propensity score‐matched analysis between different mapping catheters and indices for guiding ablation
2020 · Kohki Nakamura, Takehito Sasaki, et al. · Journal of Cardiovascular Electrophysiology · 11
Postablation cerebral embolisms in balloon‐based atrial fibrillation ablation with periprocedural direct oral anticoagulants: A comparison between cryoballoon and HotBalloon ablation
2018 · Kohki Nakamura, Takehito Sasaki, et al. · Journal of Cardiovascular Electrophysiology · 11
Pulmonary Vein Morphology Before and After Segmental Isolation in Patients with Atrial Fibrillation
2005 · MAREHIKO UEDA, HIROSHI TADA, et al. · Pacing and Clinical Electrophysiology · 11
Magnetic Resonance Imaging is Superior to Cardiac Scintigraphy to Identify Nonresponders to Cardiac Resynchronization Therapy
2009 · MIKI YOKOKAWA, HIROSHI TADA, et al. · Pacing and Clinical Electrophysiology · 10
Three‐Dimensional Computed Tomography of the Coronary Venous System
2003 · HIROSHI TADA, SHIGETO NAITO, et al. · Journal of Cardiovascular Electrophysiology · 8
Alternating myocardial sympathetic neural function of athlete's heart in professional cycle racers examined with iodine-123-MIBG myocardial scintigraphy
2001 · Keiko Koyama, Tomio Inoue, et al. · Annals of Nuclear Medicine · 8
Usefulness of dual-head coincidence gamma camera with thick nal crystals for nuclear oncology: Comparison with dedicated PET camera and conventional gamma camera with thin NaI crystals
2001 · Tomio Inoue, Noboru Oriuchi, et al. · Annals of Nuclear Medicine · 8
Works count: 49
Citation count: 775
H-index: 15
I10-index: 22
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