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A. Hirayama · SciRah

Researcher profile · Semantic Scholar

A. Hirayama

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A. Hirayama — researcher profile on SciRah

h-index: 6
Works: 32
Citations: 94

Most-cited papers

Direct comparison of brain [18F]FDG images acquired by SiPM-based and PMT-based PET/CT: phantom and clinical studies
Kei Wagatsuma, M. Sakata, K. Ishibashi, A. Hirayama +4 more
2020EJNMMI Physics23 citations Open access
Semantic Scholar
Value of Patlak Ki images from 18F-FDG-PET/CT for evaluation of the relationships between disease activity and clinical events in cardiac sarcoidosis
M. Nakajo, S. Ojima, H. Kawakami, Atsushi Tani +5 more
2021Scientific Reports21 citations Open access
Semantic Scholar
Multiple-animal MR imaging using a 3T clinical scanner and multi-channel coil for volumetric analysis in a mouse tumor model.
M. Mitsuda, M. Yamaguchi, T. Furuta, A. Nabetani +4 more
2011Magnetic Resonance in Medical Sciences9 citations Open access
Semantic Scholar
Improvement of the diagnostic accuracy of lymph node metastases of colorectal cancer in 18F-FDG-PET/CT by optimizing the iteration number for the image reconstruction
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, Masaaki Ito +7 more
2008Annals of Nuclear Medicine9 citations
Semantic Scholar
Assessment of global and regional left ventricular function by electrocardiographic gated N-13 ammonia positron emission tomography in patients with coronary artery disease.
Sugako Kanayama, I. Matsunari, A. Hirayama, Michihiko Kitayama +6 more
2005Circulation Journal9 citations Open access
Semantic Scholar
Diagnosis supporting algorithm for lymph node metastases from colorectal carcinoma on 18F-FDG PET/CT
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, Masaaki Ito +7 more
2008Annals of Nuclear Medicine7 citations
Semantic Scholar
An anthropomorphic pelvis phantom for optimization of the diagnosis of lymph node metastases in the pelvis
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, A. Hirayama +5 more
2009Annals of Nuclear Medicine4 citations
Semantic Scholar
An Attenuation Correction Method for Respiratory-Gated PET/CT Image
Tomohiro Yamazaki, H. Ue, Hideaki Haneishi, A. Hirayama +2 more
2006IEEE Nuclear Science Symposium Conference Record4 citations
Semantic Scholar
[Examination of PET image evaluation experimentation method aiming at improved accuracy of data acquisition].
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, A. Hirayama +3 more
2006Nihon Hōshasen Gijutsu Gakkai zasshi4 citations Open access
Semantic Scholar
Multiple-Animal MR Imaging Performed using a 3-Tesla Whole-body Scanner : A Feasibility Study using a 16-Channel Array Coil
A. Nabetani, M. Yamaguchi, A. Hirayama, M. Mitsuda +4 more
20093 citations
Semantic Scholar
Global and Regional Left Ventricular Function Assessed by ECG-Gated N-13 Ammonia PET in Patients with Coronary Artery Disease
Sugako Kanayama, I. Matsunari, A. Hirayama, Michihiko Kitayama +5 more
20031 citations
Semantic Scholar
Clinical Value of Patlak Ki Images Extracted From Dynamic 18F-FDG PET/CT For Evaluation of The Relationships Between Disease Activity and Clinical Events in Cardiac Sarcoidosis
M. Nakajo, S. Ojima, H. Kawakami, Atsushi Tani +5 more
20200 citations Open access
Semantic Scholar
Direct comparison of [18F]FDG brain images acquired from a phantom and patients using SiPM- and PMT-PET/CT
Kei Wagatsuma, M. Sakata, K. Ishibashi, A. Hirayama +4 more
20200 citations Open access
Semantic Scholar
Direct comparison between SiPM- and PMT-PET/CT in [18F]FDG brain imaging
Kei Wagatsuma, M. Sakata, K. Ishibashi, A. Hirayama +3 more
20190 citations
Semantic Scholar
The correlation between FDG and FBPA uptakes in malignant tumors by PET/CT
Kenta Hiroi, H. Kurihara, Natsuki Honda, Yuzuru Kono +5 more
20130 citations
Semantic Scholar
Segmental acquisition method for rectal cancer in FDG-PET/CT tests: Analysis of 20 patients
K. Tsuda, K. Koyama, Y. Iwabuchi, Takayuki Suzuki +6 more
20130 citations
Semantic Scholar
Metabolic imaging of amino acids by PET/CT: Comparison of 11C-methionine and 18F-FBPA
Kenta Hiroi, H. Kurihara, Natsuki Honda, Yuzuru Kono +4 more
20130 citations
Semantic Scholar
The usefulness of the segmental acquisition method in 18F-FDG PET/CT tests in rectal cancer patients
K. Tsuda, K. Koyama, Y. Iwabuchi, Takayuki Suzuki +6 more
20120 citations
Semantic Scholar
3D-OSEM vs FORE+OSEM: The optimal reconstruction algorithm in FDG PET tests with short acquisition time
K. Tsuda, M. Fukushi, A. Hirayama, Takayuki Suzuki +6 more
20110 citations
Semantic Scholar
Visualization of the trends of F-18 FDG uptake
Tomoka Kitao, H. Kurihara, A. Hirayama, Kenta Hiroi +5 more
20110 citations
Semantic Scholar
Erratum to: Improvement of the diagnostic accuracy of lymph node metastases of colorectal cancer in 18F-FDG-PET/CT by optimizing the iteration number for the image reconstruction
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, Masaaki Ito +7 more
20100 citations Open access
Semantic Scholar
In vivo Evaluation of Exocytic Activity in Kupffer Cells using Superparamagnetic Iron Oxide-Enhanced Magnetic Resonance Imaging; an Experimental Study on Gadolinium Chloride-Induced Liver Injury in Rats
T. Furuta, M. Yamaguchi, R. Nakagami, A. Hirayama +4 more
20090 citations
Semantic Scholar
Estimation of the noise component in PET image data due to the attenuation inside the patient's body using CT image data
Hideaki Kitamura, Takashi Sato, Kazumasa Inoue, Tatsuya Sasaki +6 more
20080 citations
Semantic Scholar
In vivo visualization of mouse sciatic nerves involved with a pancreatic cancer cells using manganese enhanced MR imaging technique
H. Mieno, M. Yamaguchi, S. Mitsunaga, A. Imoto +7 more
20080 citations
Semantic Scholar
Precise co-registration of SPECT and MRI for small animal imaging using a common animal bed with external references : A feasibility study
M. Yamaguchi, H. Fujii, K. Inoue, R. Nakagami +6 more
20080 citations
Semantic Scholar
Can the CT data of PET/CT studies estimate the noise component in PET data?
Hideaki Kitamura, Takashi Sato, Kazumasa Inoue, Hideo Kurosawa +5 more
20070 citations
Semantic Scholar
Examination about the influence of respiratory phase of CT on SUV (standardized uptake value) in PET/CT
A. Hirayama, Takashi Sato, Hideaki Kitamura, Kazumasa Inoue +4 more
20070 citations
Semantic Scholar
Improvement of the diagnostic accuracy of lymph node metastases of colorectal cancer in PET/CT by optimizing the iteration number for the image reconstruction
Kazumasa Inoue, Takashi Sato, Hideaki Kitamura, Hirofumi Fujii +6 more
20070 citations
Semantic Scholar
Transient Dilation of the Left Ventricule Using ATP Stress N-13 NH_3 PET in Patients with Coronary Artery Disease
Sugako Kanayama, I. Matsunari, A. Hirayama, Michihiko Kitayama +5 more
20030 citations
Semantic Scholar
Post-stress left ventricular dysfunction assessed by ECG-gated N-13 ammonia PET
I. Matsunari, Sugako Kanayama, N. Takekoshi, A. Hirayama +3 more
20020 citations
Semantic Scholar
Comparison between ECG-gated FDG PET and MIBI SPECT for the assessment of left ventricular function
Sugako Kanayama, Michihiko Kitayama, S. Matsui, N. Takekoshi +2 more
20020 citations
Semantic Scholar
[A case of primary hepatic lymphoma].
Atsushi Nobuoka, S. Ishigaki, A. Hirayama, K. Takada +2 more
1998Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology0 citations
Semantic Scholar

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I. Matsunari×5

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