Research Topics
| Shinichi ShimizuSummaryAffiliation: University of Tokyo Country: Japan Publications
| Collaborators
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Detail Information
Publications
Can hybrid FDG-PET/CT detect subclinical lymph node metastasis of esophageal cancer appropriately and contribute to radiation treatment planning? A comparison of image-based and pathological findingsShinichi Shimizu
Department of Radiology, Hokkaido University, Graduate School of Medicine, Kita ku, Sapporo, Japan
Int J Clin Oncol 14:421-5. 2009....- Use of implanted markers and interportal adjustment with real-time tracking radiotherapy system to reduce intrafraction prostate motionShinichi Shimizu
Department of Radiation Medicine, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 81:e393-9. 2011..The incidence of table position adjustment required to keep intrafractional uncertainty within 2.0 mm was investigated in this study... 
Tumor location, cirrhosis, and surgical history contribute to tumor movement in the liver, as measured during stereotactic irradiation using a real-time tumor-tracking radiotherapy systemKei Kitamura
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 56:221-8. 2003..To investigate the three-dimensional (3D) intrafractional motion of liver tumors during real-time tumor-tracking radiotherapy (RTRT)...- Real-time tumor-tracking radiotherapy for adrenal tumorsNorio Katoh
Department of Radiology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
Radiother Oncol 87:418-24. 2008.... - Reduction in acute morbidity using hypofractionated intensity-modulated radiation therapy assisted with a fluoroscopic real-time tumor-tracking system for prostate cancer: preliminary results of a phase I/II studyKei Kitamura
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Cancer J 9:268-76. 2003..The acute radiation reaction and preliminary tumor response of prostate cancer to hypofractionated intensity-modulated radiation therapy assisted with real-time tumor-tracking radiation therapy were investigated in this study... - Insertion and fixation of fiducial markers for setup and tracking of lung tumors in radiotherapyMikado Imura
First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 63:1442-7. 2005..The relationship between the markers and tumor can change significantly after 2 weeks, suggesting that adaptive four-dimensional RT is required... - Intrafractional tumor motion: lung and liverHiroki Shirato
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Semin Radiat Oncol 14:10-8. 2004..This article reviews the current basic knowledge on respiratory physiology and summarizes the accumulating knowledge on internal motion of lung and liver tumors... 
What is the appropriate size criterion for proton radiotherapy for hepatocellular carcinoma? A dosimetric comparison of spot-scanning proton therapy versus intensity-modulated radiation therapyChie Toramatsu
Department of Medical Physics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
Radiat Oncol 8:48. 2013....- Registration accuracy and possible migration of internal fiducial gold marker implanted in prostate and liver treated with real-time tumor-tracking radiation therapy (RTRT)Kei Kitamura
Department of Radiology, Hokkaido University School of Medicine, North-15 West-7, Kita-ku, Sapporo 060-8638, Japan
Radiother Oncol 62:275-81. 2002..Thus, even with the gold marker and RTRT system, a planning target volume margin should be used to account for registration uncertainty... - A new brain positron emission tomography scanner with semiconductor detectors for target volume delineation and radiotherapy treatment planning in patients with nasopharyngeal carcinomaNorio Katoh
Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 82:e671-6. 2012.... - Optimization of fluoroscopy parameters using pattern matching prediction in the real-time tumor-tracking radiotherapy systemNaoki Miyamoto
Division of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
Phys Med Biol 56:4803-13. 2011..The result shows that the proposed prediction method is expected to be applicable in a real clinical situation... - Tolerance of organs at risk in small-volume, hypofractionated, image-guided radiotherapy for primary and metastatic lung cancersRikiya Onimaru
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 56:126-35. 2003..To determine the organ at risk and the maximum tolerated dose (MTD) of radiation that could be delivered to lung cancer using small-volume, image-guided radiotherapy (IGRT) using hypofractionated, coplanar, and noncoplanar multiple fields... - Three-dimensional intrafractional motion of breast during tangential breast irradiation monitored with high-sampling frequency using a real-time tumor-tracking radiotherapy systemRumiko Kinoshita
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 70:931-4. 2008..To evaluate the three-dimensional intrafraction motion of the breast during tangential breast irradiation using a real-time tracking radiotherapy (RT) system with a high-sampling frequency... - Stereotactic body radiotherapy using gated radiotherapy with real-time tumor-tracking for stage I non-small cell lung cancerTetsuya Inoue
Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, North 15 West 7, Kita ku, Sapporo 060 8638, Japan
Radiat Oncol 8:69. 2013..To clarify the clinical outcomes of two dose schedule of stereotactic body radiotherapy (SBRT) for stage I non-small cell lung cancer (NSCLC) using a real-time tumor-tracking radiation therapy (RTRT) system in single institution... - Three-dimensional conformal setup (3D-CSU) of patients using the coordinate system provided by three internal fiducial markers and two orthogonal diagnostic X-ray systems in the treatment roomHiroki Shirato
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 60:607-12. 2004..We call this system "three-dimensional conformal setup" (3D-CSU)... - Organ motion in image-guided radiotherapy: lessons from real-time tumor-tracking radiotherapyHiroki Shirato
Division of Radiation Oncology, Department of Radiology, Hokkaido University School of Medicine, North 15 West 7, Kita ku, 060 8638 Sapporo, Japan
Int J Clin Oncol 12:8-16. 2007..Lung, liver, prostate, spinal/paraspinal, gynecological, head and neck, esophagus, and pancreas tumors are now ready for dose escalation studies using RTRT... - Biological effect of dose distortion by fiducial markers in spot-scanning proton therapy with a limited number of fields: a simulation studyTaeko Matsuura
Department of Medical Physics, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
Med Phys 39:5584-91. 2012..This paper focuses on prostate cancer and explores the possibility that multiple-field irradiation improves the underdose effect by markers on tumor-control probability (TCP)... - Real-time tumor-tracking radiation therapy for lung carcinoma by the aid of insertion of a gold marker using bronchofiberscopyToshiyuki Harada
First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
Cancer 95:1720-7. 2002..Excellent initial response and low incidence of clinical complications suggest that the high dose hypofractionated focal irradiation using the RTRT system can be a good local treatment for peripheral-type lung tumors... - Three-dimensional intrafractional movement of prostate measured during real-time tumor-tracking radiotherapy in supine and prone treatment positionsKei Kitamura
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 53:1117-23. 2002..To quantify three-dimensional (3D) movement of the prostate gland with the patient in the supine and prone positions and to analyze the movement frequency for each treatment position... - High dose three-dimensional conformal boost using the real-time tumor tracking radiotherapy system in cervical cancer patients unable to receive intracavitary brachytherapyHee Chul Park
Department of Radiology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
Yonsei Med J 51:93-9. 2010..The purpose of this study is to evaluate the clinical results of treatment with a high dose of 3-dimensional conformal boost (3DCB) using a real-time tracking radiation therapy (RTRT) system in cervical cancer patients... - Clinical outcomes of stereotactic body radiotherapy for small lung lesions clinically diagnosed as primary lung cancer on radiologic examinationTetsuya Inoue
Department of Radiology, Hokkaido University Graduate School of Medicine, North 15 West 7, Kita ku, Sapporo, Japan
Int J Radiat Oncol Biol Phys 75:683-7. 2009..The aim of the present study was to evaluate the outcome of stereotactic body radiotherapy (SBRT) for small lung lesions that were clinically diagnosed as primary lung cancer without pathologic confirmation... - Real-time 4-D radiotherapy for lung cancerHiroki Shirato
Department of Radiation Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
Cancer Sci 103:1-6. 2012..Real-time tumor tracking via spot-scanning proton beam therapy has the capability to cure large lung cancers in motion, and is expected to be the next-generation real-time 4DRT... - Real-time monitoring of a digestive tract marker to reduce adverse effects of moving organs at risk (OAR) in radiotherapy for thoracic and abdominal tumorsTakayuki Hashimoto
Department of Radiology, Hokkaido University School of Medicine, Sapporo, Japan
Int J Radiat Oncol Biol Phys 61:1559-64. 2005..To evaluate the feasibility of real-time monitoring of a fiducial marker in/near the digestive tract and to analyze the motion of organs at risk to determine a reasonable internal margin... - Efficacy of therapy for advanced hepatocellular carcinoma: intra-arterial 5-fluorouracil and subcutaneous interferon with image-guided radiationMakoto Chuma
Department of Gastroenterology and Hematology, Hokkaido University, Sapporo, Japan
J Gastroenterol Hepatol 26:1123-32. 2011..To evaluate the efficacy of intra-arterial 5-fluorouracil (5-FU) and subcutaneous interferon (IFN) combined with image-guided radiation therapy (IGRT) in advanced hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT)... - Exophytic giant cavernous hemangioma of the liver with growing tendencyTakayuki Masui
Department of Radiology, Seirei Hamamatsu General Hospital, Shizuoka, Japan
Radiat Med 23:121-4. 2005..We report a case of exophytic hemangioma of the liver with a growing tendency, demonstrated using magnetic resonance imaging (MRI) and computed tomography (CT) combined with angiography... - MR imaging of primary malignant lymphoma of the pancreasTakayuki Masui
Department of Radiology, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
Radiat Med 23:213-5. 2005..The infiltrative nature and hypovascularity in early-phase dynamic contrast study without encasement of arteries and veins were well demonstrated by MR imaging and were consistent with malignant lymphoma...