World's Best Scientists 2026 revealed!
Masahiro Hiraoka

Masahiro Hiraoka

D-Index & Metrics

Medicine

D-Index
91
Citations
32416
World Ranking
11707
National Ranking
345

Masahiro Hiraoka publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Masahiro Hiraoka sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 982 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Masahiro Hiraoka D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Masahiro Hiraoka sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 91 D-Index — 43rd percentile

43% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Masahiro Hiraoka is affiliated with Kyoto University in Japan and conducts research primarily in the field of Medicine. Their work spans several subfields, including Pulmonary and Respiratory Medicine, Radiation, Radiology, Nuclear Medicine and Imaging, Oncology, and Otorhinolaryngology.

The scientist's research topics cover a range of areas such as Advanced Radiotherapy Techniques, Lung Cancer Diagnosis and Treatment, Head and Neck Cancer Studies, Medical Imaging Techniques and Applications, Hepatocellular Carcinoma Treatment and Prognosis, Pancreatic and Hepatic Oncology Research, and Radiation Therapy and Dosimetry.

Recent papers authored or co-authored by Masahiro Hiraoka include:

  • A phase II study of adaptive two-step intensity-modulated radiation therapy (IMRT) with chemotherapy for loco-regionally advanced nasopharyngeal cancer (JCOG1015), 2020, International Journal of Clinical Oncology
  • The gimbaled-head radiotherapy system: Rise and downfall of a dedicated system for dynamic tumor tracking with real-time monitoring and dynamic WaveArc, 2020, Radiotherapy and Oncology
  • Organs-at-risk dose constraints in head and neck intensity-modulated radiation therapy using a dataset from a multi-institutional clinical trial (JCOG1015A1), 2022, Radiation Oncology
  • Multi-institutional phase II study on the safety and efficacy of dynamic tumor tracking-stereotactic body radiotherapy for lung tumors, 2022, Radiotherapy and Oncology
  • Influence of chemoradiotherapy on nutritional status in locally advanced rectal cancer: Prospective multicenter study, 2020, Nutrition

Frequent co-authors include:

  • Takashi Mizowaki (17 joint publications)
  • Michio Yoshimura (12 joint publications)
  • Mitsuhiro Nakamura (12 joint publications)
  • Yukinori Matsuo (11 joint publications)
  • Katsuyuki Karasawa (9 joint publications)

Masahiro Hiraoka's publications are frequently found in several specialized journals, including:

  • International Journal of Radiation Oncology*Biology*Physics (4 publications)
  • International Journal of Clinical Oncology (2 publications)
  • Radiotherapy and Oncology (2 publications)
  • Radiation Oncology (2 publications)
  • Research Square (2 publications)

Best Publications

  • Hypofractionated stereotactic radiotherapy (HypoFXSRT) for stage I non-small cell lung cancer: updated results of 257 patients in a Japanese multi-institutional study.

    Hiroshi Onishi;Hiroki Shirato;Yasushi Nagata;Masahiro Hiraoka

  • Stereotactic hypofractionated high-dose irradiation for stage I nonsmall cell lung carcinoma: clinical outcomes in 245 subjects in a Japanese multiinstitutional study.

    Hiroshi Onishi;Tsutomu Araki;Hiroki Shirato;Yasushi Nagata

  • Correction: Corrigendum: Cancer cells that survive radiation therapy acquire HIF-1 activity and translocate toward tumour blood vessels

    Hiroshi Harada;Masahiro Inoue;Satoshi Itasaka;Kiichi Hirota

  • Thyroid gland tumor diagnosis at US elastography

    Andrej Lyshchik;Tatsuya Higashi;Ryo Asato;Shinzo Tanaka

  • Clinical outcomes of a phase I/II study of 48 Gy of stereotactic body radiotherapy in 4 fractions for primary lung cancer using a stereotactic body frame

    Yasushi Nagata;Kenji Takayama;Yukinori Matsuo;Yoshiki Norihisa

  • Stereotactic body radiotherapy (SBRT) for operable Stage i non-small-cell lung cancer: Can SBRT be comparable to surgery?

    Hiroshi Onishi;Hiroki Shirato;Yasushi Nagata;Masahiro Hiraoka

  • Tumor hypoxia : A target for selective cancer therapy

    Shinae Kizaka-Kondoh;Masahiro Inoue;Hiroshi Harada;Masahiro Hiraoka

  • Prospective Trial of Stereotactic Body Radiation Therapy for Both Operable and Inoperable T1N0M0 Non-Small Cell Lung Cancer: Japan Clinical Oncology Group Study JCOG0403.

    Yasushi Nagata;Masahiro Hiraoka;Taro Shibata;Hiroshi Onishi

  • Clinical outcomes of 3D conformal hypofractionated single high-dose radiotherapy for one or two lung tumors using a stereotactic body frame

    Yasushi Nagata;Yoshiharu Negoro;Tetsuya Aoki;Takashi Mizowaki

  • Cervical Lymph Node Metastases: Diagnosis at Sonoelastography—Initial Experience

    Andrej Lyshchik;Andrej Lyshchik;Tatsuya Higashi;Ryo Asato;Shinzo Tanaka

  • The effectiveness of an immobilization device in conformal radiotherapy for lung tumor: reduction of respiratory tumor movement and evaluation of the daily setup accuracy

    Yoshiharu Negoro;Yasushi Nagata;Tetsuya Aoki;Takashi Mizowaki

  • Development of a four-dimensional image-guided radiotherapy system with a gimbaled X-ray head

    Yuichiro Kamino;Kenji Takayama;Kenji Takayama;Masaki Kokubo;Yuichiro Narita

  • Hypoxia and Hypoxia-Inducible Factor-1 Expression Enhance Osteolytic Bone Metastases of Breast Cancer

    Toru Hiraga;Shinae Kizaka-Kondoh;Kiichi Hirota;Masahiro Hiraoka

  • Multi-institutional studies on hyperthermia using an 8-MHz radiofrequency capacitive heating device (Thermotron RF-8) in combination with radiation for cancer therapy.

    Mitsuyuki Abe;Masahiro Hiraoka;Masaji Takahashi;Sunao Egawa

  • Stereotactic body radiotherapy for oligometastatic lung tumors.

    Yoshiki Norihisa;Yasushi Nagata;Kenji Takayama;Yukinori Matsuo

  • UCHL1 provides diagnostic and antimetastatic strategies due to its deubiquitinating effect on HIF-1α

    Yoko Goto;Lihua Zeng;Chan Joo Yeom;Yuxi Zhu

  • Dose-volume metrics associated with radiation pneumonitis after stereotactic body radiation therapy for lung cancer.

    Yukinori Matsuo;Keiko Shibuya;Mitsuhiro Nakamura;Masaru Narabayashi

  • Regulatory mechanisms of hypoxia-inducible factor 1 activity: Two decades of knowledge.

    Sho Koyasu;Sho Koyasu;Minoru Kobayashi;Yoko Goto;Masahiro Hiraoka

  • Oxidative stress and altered antioxidant defenses in children with acute exacerbation of atopic dermatitis.

    Hirokazu Tsukahara;Rumiko Shibata;Yusei Ohshima;Yukiko Todoroki

  • Magnetite nanoparticles with high heating efficiencies for application in the hyperthermia of cancer

    Zhixia Li;Masakazu Kawashita;Norio Araki;Michihide Mitsumori

Frequent Co-Authors

Akira Nakamura
Akira Nakamura Osaka University
Hiroki Shirato
Hiroki Shirato Hokkaido University
Osamu Ogawa
Osamu Ogawa Kyoto University
Kaori Togashi
Kaori Togashi Kyoto University
Shuji Kaneko
Shuji Kaneko Kyoto University
Masayuki Imamura
Masayuki Imamura Kyoto University
Kiichi Hirota
Kiichi Hirota Kansai Medical University
Susumu Miyamoto
Susumu Miyamoto Kyoto University
Hideo Saji
Hideo Saji Kyoto University
Tadashi Kokubo
Tadashi Kokubo Chubu University

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