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6 Result(s)

within Yoshinobu Shimohigashi Remove this filter Nuclear Medicine Remove this filter

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  1. No Access

    Article

    Comparison of rigid and deformable image registration for nasopharyngeal carcinoma radiotherapy planning with diagnostic position PET/CT

    This observer study aimed to compare rigid image registration (RIR) with deformable image registration (DIR) for diagnostic position (DP) positron emission tomography/computed tomography (PET/CT) images in the...

    Yudai Kai, Hidetaka Arimura, Ryo Toya, Tetsuo Saito… in Japanese Journal of Radiology (2020)

  2. No Access

    Article

    Commissioning and validation of fluence-based 3D VMAT dose reconstruction system using new transmission detector

    In this study, we evaluated the basic performance of the three-dimensional dose verification system COMPASS (IBA Dosimetry). This system is capable of reconstructing 3D dose distributions on the patient anatom...

    Yuji Nakaguchi, Takeshi Oono, Masato Maruyama… in Radiological Physics and Technology (2018)

  3. No Access

    Article

    Four-dimensional cone-beam computed tomography-guided radiotherapy for gastric lymphoma

    We describe a treatment method with four-dimensional cone-beam computed tomography (4D-CBCT)-guided radiotherapy for gastric lymphoma.

    Ryo Toya, Tetsuo Saito, Yoshinobu Shimohigashi… in Japanese Journal of Radiology (2018)

  4. No Access

    Article

    Dynamic positioning accuracy of a novel multileaf collimator for volumetric modulated arc therapy

    We investigated the dynamic positioning accuracy of Agility (Elekta) for volumetric modulated arc therapy (VMAT). The accuracy of the multileaf collimator (MLC) leaf position during VMAT was evaluated using th...

    Yuji Nakaguchi, Takeshi Ono, Ryota Onizuka… in Radiological Physics and Technology (2016)

  5. No Access

    Article

    Optimization of acquisition parameters and accuracy of target motion trajectory for four-dimensional cone-beam computed tomography with a dynamic thorax phantom

    Our purpose in this study was to evaluate the performance of four-dimensional computed tomography (4D-CBCT) and to optimize the acquisition parameters. We evaluated the relationship between the acquisition par...

    Yoshinobu Shimohigashi, Fujio Araki, Masato Maruyama… in Radiological Physics and Technology (2015)

  6. No Access

    Article

    Validation of a quick three-dimensional dose verification system for pre-treatment IMRT QA

    In this study, we evaluated the dosimetric performance of the three-dimensional (3D) dose verification system, COMPASS version 3 (IBA Dosimetry, GmbH, Germany). The COMPASS has the function of a dedicated beam...

    Yuji Nakaguchi, Fujio Araki, Takeshi Ono… in Radiological Physics and Technology (2015)