Yoshimasa Oyama

Summary

Affiliation: Graduate School
Country: Japan

Publications

  1. ncbi request reprint Radiofrequency ablated lesion in the normal porcine lung: long-term follow-up with MRI and pathology
    Yoshimasa Oyama
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 28:346-53. 2005
  2. ncbi request reprint 18F-FDG small-animal PET for monitoring the therapeutic effect of CT-guided radiofrequency ablation on implanted VX2 lung tumors in rabbits
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, Osaka, Japan
    J Nucl Med 47:1351-8. 2006
  3. ncbi request reprint Radiofrequency ablation in a porcine lung model: correlation between CT and histopathologic findings
    Akira Yamamoto
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 185:1299-306. 2005
  4. doi request reprint Determinants of local progression after computed tomography-guided percutaneous radiofrequency ablation for unresectable lung tumors: 9-year experience in a single institution
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 33:787-93. 2010
  5. ncbi request reprint Frequency and risk factors of various complications after computed tomography-guided radiofrequency ablation of lung tumors
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 31:122-30. 2008
  6. ncbi request reprint Fluorine-18-fluorodeoxyglucose positron emission tomography for assessment of patients with unresectable recurrent or metastatic lung cancers after CT-guided radiofrequency ablation: preliminary results
    Tomohisa Okuma
    Department of Radiolgy, Osaka City University Graduate School of Medicine, Japan
    Ann Nucl Med 20:115-21. 2006
  7. ncbi request reprint Factors contributing to cavitation after CT-guided percutaneous radiofrequency ablation for lung tumors
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    J Vasc Interv Radiol 18:399-404. 2007
  8. doi request reprint Computed tomography-guided re-radiofrequency ablation for unresectable lung tumor with local progression previously treated with the same procedure
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Osaka, 545 8585, Japan
    Radiat Med 26:519-25. 2008
  9. ncbi request reprint CT-guided percutaneous radiofrequency ablation of spleen: a preliminary study
    Toshiyuki Matsuoka
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 188:1044-6. 2007
  10. ncbi request reprint Assessment of cerebral microembolism during percutaneous radiofrequency ablation of lung tumors using diffusion-weighted imaging
    Akira Yamamoto
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 183:1785-9. 2004

Detail Information

Publications10

  1. ncbi request reprint Radiofrequency ablated lesion in the normal porcine lung: long-term follow-up with MRI and pathology
    Yoshimasa Oyama
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 28:346-53. 2005
    ..To evaluate the effectiveness of magnetic resonance imaging (MRI) in reflecting histopathologic changes after radiofrequency ablation (RFA) to the lung and to assess accurately the extent of tissue necrosis for evaluating untreated lesions...
  2. ncbi request reprint 18F-FDG small-animal PET for monitoring the therapeutic effect of CT-guided radiofrequency ablation on implanted VX2 lung tumors in rabbits
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, Osaka, Japan
    J Nucl Med 47:1351-8. 2006
    ....
  3. ncbi request reprint Radiofrequency ablation in a porcine lung model: correlation between CT and histopathologic findings
    Akira Yamamoto
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 185:1299-306. 2005
    ..Although CT findings reflect the histopathologic findings, attention should be paid to the dissociation of ablated lesions and high-density areas in clinical interpretation of CT images...
  4. doi request reprint Determinants of local progression after computed tomography-guided percutaneous radiofrequency ablation for unresectable lung tumors: 9-year experience in a single institution
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 33:787-93. 2010
    ..011). The present study showed that 32% of lung tumors developed local progression after CT-guided RFA. The significant risk factor for local progression after RFA for lung tumors was tumor size >or=2 cm...
  5. ncbi request reprint Frequency and risk factors of various complications after computed tomography-guided radiofrequency ablation of lung tumors
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Osaka 545 8585, Japan
    Cardiovasc Intervent Radiol 31:122-30. 2008
    ..To retrospectively determine the frequency and risk factors of various side effects and complications after percutaneous computed tomography-guided radiofrequency (RF) ablation of lung tumors...
  6. ncbi request reprint Fluorine-18-fluorodeoxyglucose positron emission tomography for assessment of patients with unresectable recurrent or metastatic lung cancers after CT-guided radiofrequency ablation: preliminary results
    Tomohisa Okuma
    Department of Radiolgy, Osaka City University Graduate School of Medicine, Japan
    Ann Nucl Med 20:115-21. 2006
    ....
  7. ncbi request reprint Factors contributing to cavitation after CT-guided percutaneous radiofrequency ablation for lung tumors
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    J Vasc Interv Radiol 18:399-404. 2007
    ....
  8. doi request reprint Computed tomography-guided re-radiofrequency ablation for unresectable lung tumor with local progression previously treated with the same procedure
    Tomohisa Okuma
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Osaka, 545 8585, Japan
    Radiat Med 26:519-25. 2008
    ..The aim of this study was to evaluate the technical success, complications, and effectiveness of re-radiofrequency (re-RF) ablation for recurrent lung tumors previously treated with RF ablation...
  9. ncbi request reprint CT-guided percutaneous radiofrequency ablation of spleen: a preliminary study
    Toshiyuki Matsuoka
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 188:1044-6. 2007
    ..The objective of our study was to evaluate the technical feasibility, safety, and changes of platelet counts of CT-guided percutaneous radiofrequency ablation of normal spleen in a porcine model...
  10. ncbi request reprint Assessment of cerebral microembolism during percutaneous radiofrequency ablation of lung tumors using diffusion-weighted imaging
    Akira Yamamoto
    Department of Radiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahi machi, Abeno Ku, Osaka 545 8585, Japan
    AJR Am J Roentgenol 183:1785-9. 2004
    ..To assess the risk of cerebral infarction during radiofrequency ablation of lung tumors, we performed diffusion-weighted imaging and, if possible, monitored microemboli in the carotid artery during radiofrequency ablation...