All Stories

  1. Dataset augmentation with multiple contrasts images in super-resolution processing of T1-weighted brain magnetic resonance images

    Article • Radiological Physics and Technology, December 2024, Springer Science + Business Media

    Hiroyuki Akai

  2. Super-resolution Deep Learning Reconstruction for 3D Brain MR Imaging: Improvement of Cranial Nerve Depiction and Interobserver Agreement in Evaluations of Neurovascular Conflict

    Article • Academic Radiology, December 2024, Elsevier

    Hiroyuki Akai

  3. Iterative Motion Correction Technique with Deep Learning Reconstruction for Brain MRI: A Volunteer and Patient Study

    Article • Journal of Imaging Informatics in Medicine, June 2024, Springer Science + Business Media

    Hiroyuki Akai

  4. Faster acquisition of magnetic resonance imaging sequences of the knee via deep learning reconstruction: a volunteer study

    Article • Clinical Radiology, June 2024, Elsevier

    Hiroyuki Akai

  5. Super-resolution Deep Learning Reconstruction Cervical Spine 1.5T MRI: Improved Interobserver Agreement in Evaluations of Neuroforaminal Stenosis Compared to Conventional Deep Learning Reconstruction

    Article • Journal of Imaging Informatics in Medicine, April 2024, Springer Science + Business Media

    Hiroyuki Akai

  6. Is 18F-fluorodeoxyglucose PET recommended for small lung nodules? CT findings of 18F-fluorodeoxyglucose non-avid lung cancer

    Article • British Journal of Radiology, December 2023, Oxford University Press (OUP)

    Hiroyuki Akai

  7. Early detection of hypervascularization in hepatocellular carcinoma (≤2 cm) on hepatic arterial phase with virtual monochromatic imaging: Comparison with low-tube voltage CT

    Article • Medicine, September 2023, Wolters Kluwer Health

    Hiroyuki Akai

  8. Comparison of 1.5 T and 3 T magnetic resonance angiography for detecting cerebral aneurysms using deep learning-based computer-assisted detection software

    Article • Neuroradiology, August 2023, Springer Science + Business Media

    Hiroyuki Akai

  9. Clinical Impact of Deep Learning Reconstruction in MRI

    Article • Radiographics, June 2023, Radiological Society of North America (RSNA)

    Hiroyuki Akai

  10. Radiological precursor lesions of lung squamous cell carcinoma: Early progression patterns and divergent volume doubling time between hilar and peripheral zones

    Article • Lung Cancer, February 2023, Elsevier

    Hiroyuki Akai

  11. Feasibility study of direct CT lymphangiography in mice: comparison with interstitial CT/MR lymphangiography

    Article • European Radiology, January 2023, Springer Science + Business Media

    Hiroyuki Akai

  12. Acceleration of knee magnetic resonance imaging using a combination of compressed sensing and commercially available deep learning reconstruction: a preliminary study

    Article • BMC Medical Imaging, January 2023, Springer Science + Business Media

    Hiroyuki Akai

  13. Usefulness of deep learning-based noise reduction for 1.5 T MRI brain images

    Article • Clinical Radiology, January 2023, Elsevier

    Hiroyuki Akai

  14. Feasibility of accelerated whole-body diffusion-weighted imaging using a deep learning-based noise-reduction technique in patients with prostate cancer

    Article • Magnetic Resonance Imaging, October 2022, Elsevier

    Hiroyuki Akai

  15. The contralateral effects of anticipated stimuli on brain activity measured by ERP and fMRI

    Article • Psychophysiology, September 2022, Wiley

    Hiroyuki Akai

  16. Motion correction in MR image for analysis of VSRAD using generative adversarial network

    Article • PLOS One, September 2022, PLOS

    Hiroyuki Akai

  17. Deep learning reconstruction for the evaluation of neuroforaminal stenosis using 1.5T cervical spine MRI: comparison with 3T MRI without deep learning reconstruction

    Article • Neuroradiology, August 2022, Springer Science + Business Media

    Hiroyuki Akai

  18. Clinical feasibility of an abdominal thin-slice breath-hold single-shot fast spin echo sequence processed using a deep learning-based noise-reduction approach

    Article • Magnetic Resonance Imaging, July 2022, Elsevier

    Hiroyuki Akai

  19. Deep learning reconstruction for 1.5 T cervical spine MRI: effect on interobserver agreement in the evaluation of degenerative changes

    Article • European Radiology, March 2022, Springer Science + Business Media

    Hiroyuki Akai

  20. Radiomics with 3-dimensional magnetic resonance fingerprinting: influence of dictionary design on repeatability and reproducibility of radiomic features

    Article • European Radiology, March 2022, Springer Science + Business Media

    Hiroyuki Akai

  21. Commercially Available Deep-learning-reconstruction of MR Imaging of the Knee at 1.5T Has Higher Image Quality Than Conventionally-reconstructed Imaging at 3T: A Normal Volunteer Study

    Article • Magnetic Resonance in Medical Sciences, January 2022, Japanese Society for Magnetic Resonance in Medicine

    Hiroyuki Akai

  22. Texture Analysis in Brain Tumor MR Imaging

    Article • Magnetic Resonance in Medical Sciences, January 2022, Japanese Society for Magnetic Resonance in Medicine

    Hiroyuki Akai

  23. Impact of deep learning reconstruction on intracranial 1.5 T magnetic resonance angiography

    Article • Japanese Journal of Radiology, December 2021, Springer Science + Business Media

    Hiroyuki Akai

  24. Effects of Gadolinium Deposition in the Brain on Motor or Behavioral Function: A Mouse Model

    Article • Radiology, November 2021, Radiological Society of North America (RSNA)

    Hiroyuki Akai

  25. Breath-hold 3D magnetic resonance cholangiopancreatography at 1.5 T using a deep learning-based noise-reduction approach: Comparison with the conventional respiratory-triggered technique

    Article • European Journal of Radiology, November 2021, Elsevier

    Hiroyuki Akai

  26. Detectability of pancreatic lesions by low-dose unenhanced computed tomography using iterative reconstruction

    Article • European Journal of Radiology, August 2021, Elsevier

    Hiroyuki Akai

  27. Parkinson’s disease: deep learning with a parameter-weighted structural connectome matrix for diagnosis and neural circuit disorder investigation

    Article • Neuroradiology, January 2021, Springer Science + Business Media

    Hiroyuki Akai

  28. Association of coagulopathy with liver dysfunction in patients with COVID‐19

    Article • Hepatology Research, October 2020, Wiley

    Hiroyuki Akai

  29. Prediction of bone mineral density from computed tomography: application of deep learning with a convolutional neural network

    Article • European Radiology, February 2020, Springer Science + Business Media

    Hiroyuki Akai

  30. Application of CT texture analysis to assess the localization of primary aldosteronism

    Article • Scientific Reports, January 2020, Springer Science + Business Media

    Hiroyuki Akai

  31. Deep learning application in the oesophageal endoscopy

    Article • Journal of Medical Artificial Intelligence, December 2019, AME Publishing Company

    Hiroyuki Akai

  32. MRI findings in posttraumatic stress disorder

    Article • Journal of Magnetic Resonance Imaging, September 2019, Wiley

    Hiroyuki Akai

  33. Deep learning to differentiate parkinsonian disorders separately using single midsagittal MR imaging: a proof of concept study

    Article • European Radiology, July 2019, Springer Science + Business Media

    Hiroyuki Akai

  34. Machine Learning-based Texture Analysis of Contrast-enhanced MR Imaging to Differentiate between Glioblastoma and Primary Central Nervous System Lymphoma

    Article • Magnetic Resonance in Medical Sciences, January 2019, Japanese Society for Magnetic Resonance in Medicine

    Hiroyuki Akai

  35. Predicting prognosis of resected hepatocellular carcinoma by radiomics analysis with random survival forest

    Article • Diagnostic and Interventional Imaging, October 2018, Elsevier

    Hiroyuki Akai

  36. Deep learning for staging liver fibrosis on CT: a pilot study

    Article • European Radiology, May 2018, Springer Science + Business Media

    Hiroyuki Akai

  37. Factors associated with the size of the adhesio interthalamica based on 3.0-T magnetic resonance images

    Article • Acta Radiologica, May 2018, SAGE Publications

    Dr Koichiro Yasaka, Hiroyuki Akai

  38. The inhibitory effect of gadoxetate disodium on hepatic transporters: a study using indocyanine green

    Article • European Radiology, April 2018, Springer Science + Business Media

    Hiroyuki Akai

  39. Liver Fibrosis: Deep Convolutional Neural Network for Staging by Using Gadoxetic Acid–enhanced Hepatobiliary Phase MR Images

    Article • Radiology, April 2018, Radiological Society of North America (RSNA)

    Hiroyuki Akai

  40. Deep learning with convolutional neural network in radiology

    Article • Japanese Journal of Radiology, March 2018, Springer Science + Business Media

    Hiroyuki Akai

  41. Quantitative computed tomography texture analyses for anterior mediastinal masses: Differentiation between solid masses and cysts

    Article • European Journal of Radiology, March 2018, Elsevier

    Hiroyuki Akai

  42. Deep Learning with Convolutional Neural Network for Differentiation of Liver Masses at Dynamic Contrast-enhanced CT: A Preliminary Study

    Article • Radiology, March 2018, Radiological Society of North America (RSNA)

    Hiroyuki Akai

  43. Imaging prediction of nonalcoholic steatohepatitis using computed tomography texture analysis

    Article • European Radiology, February 2018, Springer Science + Business Media

    Hiroyuki Akai

  44. Impact of hepatocellular carcinoma heterogeneity on computed tomography as a prognostic indicator

    Article • Scientific Reports, October 2017, Springer Science + Business Media

    Hiroyuki Akai

  45. Gadoxetate disodium-induced tachypnoea and the effect of dilution method: a proof-of-concept study in mice

    Article • European Radiology, September 2017, Springer Science + Business Media

    Hiroyuki Akai

  46. Influence of Indocyanine Green on Hepatic Gd-EOB-DTPA Uptake

    Article • Investigative Radiology, July 2017, Wolters Kluwer Health

    Hiroyuki Akai

  47. Quantitative computed tomography texture analysis for estimating histological subtypes of thymic epithelial tumors

    Article • European Journal of Radiology, July 2017, Elsevier

    Hiroyuki Akai

  48. Precision of quantitative computed tomography texture analysis using image filtering

    Article • Medicine, May 2017, Wolters Kluwer Health

    Dr Eduardo G Moros, Hiroyuki Akai

  49. The natural history of streptozotocin-stimulated non-alcoholic steatohepatitis mice followed by Gd-EOB-DTPA-enhanced MRI: Comparison with simple steatosis mice

    Article • Magnetic Resonance Imaging, May 2017, Elsevier

    Hiroyuki Akai

  50. MR Lymphography by Gd-Micelle MRI Agent

    Article • Journal of Magnetic Resonance Imaging, April 2017, Wiley

    Hiroyuki Akai

  51. Computed tomography and magnetic resonance imaging of a plexiform angiomyxoid myofibroblastic tumor: a case report

    Article • BMC Medical Imaging, January 2017, Springer Science + Business Media

    Hiroyuki Akai

  52. Anomalous branching pattern of the portal vein: right posterior portal vein originating from the left portal vein

    Article • Surgical and Radiologic Anatomy, October 2016, Springer Science + Business Media

    Hiroyuki Akai

  53. Reducing CT radiation exposure with organ effective modulation: A retrospective clinical study

    Article • European Journal of Radiology, September 2016, Elsevier

    Dr Nobuo Tomizawa, Hiroyuki Akai

  54. A Dorsal Pancreatic Artery Originating from the Right Inferior Phrenic Artery

    Article • Journal of Vascular and Interventional Radiology, January 2016, Elsevier

    Hiroyuki Akai

  55. Hepatic Involvement of Histiocytic Sarcoma: CT and MRI Findings

    Article • Korean Journal of Radiology, January 2016, The Korean Society of Radiology (KAMJE)

    Hiroyuki Akai

  56. MR Imaging of Carcinosarcoma of the Liver using Gd-EOB-DTPA

    Article • Magnetic Resonance in Medical Sciences, January 2014, Japanese Society for Magnetic Resonance in Medicine

    Dr Nobuo Tomizawa, Hiroyuki Akai

  57. Non-gaussian diffusion-weighted imaging for assessing diurnal changes in intervertebral disc microstructure

    Article • Journal of Magnetic Resonance Imaging, November 2013, Wiley

    Hiroyuki Akai

  58. Differentiation of adrenal tumors in patients with hepatocellular carcinoma: Adrenal adenoma versus metastasis

    Article • European Journal of Radiology, August 2013, Elsevier

    Hiroyuki Akai

  59. Santorinicele without pancreas divisum pathophysiology: initial clinical and radiographic investigations

    Article • BMC Gastroenterology, April 2013, Springer Science + Business Media

    Hiroyuki Akai

  60. Model-Based Iterative Reconstruction Technique for Ultralow-Dose Chest CT

    Article • Investigative Radiology, April 2013, Wolters Kluwer Health

    Hiroyuki Akai

  61. Fate of hypointense lesions on Gd-EOB-DTPA-enhanced magnetic resonance imaging

    Article • European Journal of Radiology, November 2012, Elsevier

    Hiroyuki Akai

  62. Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases?

    Article • Japanese Journal of Radiology, July 2012, Springer Science + Business Media

    Hiroyuki Akai

  63. Meandering Main Pancreatic Duct as a Relevant Factor to the Onset of Idiopathic Recurrent Acute Pancreatitis

    Article • PLOS One, May 2012, PLOS

    Hiroyuki Akai

  64. Model-based iterative reconstruction technique for radiation dose reduction in chest CT: comparison with the adaptive statistical iterative reconstruction technique

    Article • European Radiology, April 2012, Springer Science + Business Media

    Hiroyuki Akai

  65. Effect of radiation dose and adaptive statistical iterative reconstruction on image quality of pulmonary computed tomography

    Article • Japanese Journal of Radiology, December 2011, Springer Science + Business Media

    Hiroyuki Akai

  66. Detection of hepatocellular carcinoma by Gd-EOB-DTPA-enhanced liver MRI: Comparison with triple phase 64 detector row helical CT

    Article • European Journal of Radiology, November 2011, Elsevier

    Hiroyuki Akai

  67. Retroportal main pancreatic duct with circumportal pancreas: radiographic visualization

    Article • Clinical Imaging, November 2011, Elsevier

    Hiroyuki Akai

  68. Radiology reading-caused fatigue and measurement of eye strain with critical flicker fusion frequency

    Article • Japanese Journal of Radiology, August 2011, Springer Science + Business Media

    Hiroyuki Akai

  69. Pancreas divisum as a predisposing factor for chronic and recurrent idiopathic pancreatitis: initial in vivo survey

    Article • Gut, February 2011, BMJ

    Hiroyuki Akai

  70. MR imaging of the biliary tract with Gd-EOB-DTPA: Effect of liver function on signal intensity

    Article • European Journal of Radiology, February 2011, Elsevier

    Hiroyuki Akai

  71. Parasellar T2 Dark Sign on MR Imaging in Patients with Lymphocytic Hypophysitis

    Article • American Journal of Neuroradiology, July 2010, American Society of Neuroradiology (ASNR)

    Hiroyuki Akai

  72. Relationship Between Liver Function and Liver Signal Intensity in Hepatobiliary Phase of Gadolinium Ethoxybenzyl Diethylenetriamine Pentaacetic Acid-Enhanced Magnetic Resonance Imaging

    Article • Journal of Computer Assisted Tomography, May 2010, Wolters Kluwer Health

    Hiroyuki Akai

  73. Prepancreatic postduodenal portal vein: a new hypothesis for the development of the portal venous system

    Article • Japanese Journal of Radiology, February 2010, Springer Science + Business Media

    Dr Nobuo Tomizawa, Hiroyuki Akai

  74. Efficacy of Double-Arterial Phase Gadolinium Ethoxybenzyl Diethylenetriamine Pentaacetic Acid-Enhanced Liver Magnetic Resonance Imaging Compared With Double-Arterial Phase Multi-Detector Row Helical Computed Tomography

    Article • Journal of Computer Assisted Tomography, November 2009, Wolters Kluwer Health

    Hiroyuki Akai

  75. Hepatic Segments and Vasculature: Projecting CT Anatomy onto Angiograms

    Article • Radiographics, November 2009, Radiological Society of North America (RSNA)

    Hiroyuki Akai

  76. Congenital absence of superior vena cava associated with high position of aortic arch

    Article • European Journal of Radiology Extra, August 2006, Elsevier

    Hiroyuki Akai

  77. Diffusion Tensor Tractography of Gliomatosis Cerebri

    Article • Journal of Computer Assisted Tomography, January 2005, Wolters Kluwer Health

    Hiroyuki Akai