Search Results - "Masutani, Y"

Computer-Assisted Detection of Cerebral Aneurysms in MR Angiography in a Routine Image-Reading Environment: Effects on Diagnosis by Radiologists by Miki, S, Hayashi, N, Masutani, Y, Nomura, Y, Yoshikawa, T, Hanaoka, S, Nemoto, M, Ohtomo, K

“…Experiences with computer-assisted detection of cerebral aneurysms in diagnosis by radiologists in real-life clinical environments have not been reported. The…”
Get full text

Computerized detection of pulmonary embolism in spiral CT angiography based on volumetric image analysis by Masutani, Y., MacMahon, H., Doi, K.

“…A fully automated method for computerized detection of pulmonary embolism in spiral computed tomography angiography was developed based on volumetric image…”
Get full text

Three-dimensional white matter tractography by diffusion tensor imaging in ischaemic stroke involving the corticospinal tract by Kunimatsu, A, Aoki, S, Masutani, Y, Abe, O, Mori, H, Ohtomo, K

“…Diffusion tensor MR imaging (DTI) provides information on diffusion anisotropy, which can be expressed with three-dimensional (3D) white matter tractography…”
Get full text

A Variational Method for Geometric Regularization of Vascular Segmentation in Medical Images by Gooya, A., Hongen Liao, Matsumiya, K., Masamune, K., Masutani, Y., Dohi, T.

“…In this paper, a level-set-based geometric regularization method is proposed which has the ability to estimate the local orientation of the evolving front and…”
Get full text

SU‐E‐I‐14: Improvement of Four Dimensional Cone Beam CT Image Quality with Iterative Reconstruction by Kida, S, Nakano, M, Masutani, Y, Nakagawa, K, Haga, A

“…Purpose: Four‐dimensional cone beam CT (4D‐CBCT) is well known as powerful modality for image guided radiation therapy. Conventionally, it is reconstructed by…”
Get full text

PD-0411: Improvement of four dimensional cone beam CT image quality with iterative reconstruction by Kida, S, Masutani, Y, Nakano, M, Nakagawa, K, Haga, A

Get full text

Accuracy Verification of 4D Cone Beam CT (CBCT)-Based Lung Tumor Registration by Way of In-Treatment 4D CBCT Analysis by Nakagawa, K, Haga, A, Takahashi, W, Yamashita, H, Imae, T, Kida, S, Masutani, Y, Kotoku, J, Sakumi, A, Ohtomo, K

Get full text

Liver CT image processing: A short introduction of the technical elements by Masutani, Y., Uozumi, K., Akahane, Masaaki, Ohtomo, Kuni

“…In this paper, we describe the technical aspects of image analysis for liver diagnosis and treatment, including the state-of-the-art of liver image analysis…”
Get full text

SU‐E‐J‐33: Geometric Agreement Check for Imaging System with Radiation Beam by KV and MV‐CBCT by Saotome, N, Kida, S, Haga, A, Masutani, Y, Ohtomo, K, Nakagawa, K

“…Purpose: The verification method of the geometry agreement between a light field and/or a laser coordinate and treatment beam should be easy and quick. In this…”
Get full text

SU‐E‐J‐122: Time‐Ordered Four Dimensional Cone‐Beam CT by Nakano, M, Kida, S, Masutani, Y, Shiraki, T, Shiraishi, K, Yamamoto, K, Nakagawa, K, Haga, A

“…Purpose: Four‐dimensional (4D) cone‐beam CT (CBCT) techniques have been started to use in clinical sites as a tool of image‐guided radiotherapy (IGRT),…”
Get full text

SU‐E‐J‐219: The Performance Test of EPID for In‐Vivo Dosimetry by Saotome, N, Kida, S, Imae, T, Sasaki, K, Sakumi, A, Masutani, Y, Haga, A, Gawa, K Naka

“…Purpose: An electronic portal imaging device (EPID) imaging is one of the promising tools to observe the dose in real time with a dynamic treatment. From our…”
Get full text

SU‐C‐141‐06: Registration Accuracy with Four‐Dimensional Cone‐Beam CT for Lung Cancer Treatment by Haga, A, Kotoku, J, Kida, S, Masutani, Y, Yamashita, H, Takahashi, W, Imae, T, Nakagawa, K

“…Purpose: A four‐dimensional (4D) cone‐beam CT (CBCT) is widely implemented in the image‐guided radiation therapy (IGRT) for lung cancer treatment. Recently, we…”
Get full text

4D registration and 4D verification of lung tumor position for stereotactic volumetric modulated arc therapy using respiratory-correlated cone-beam CT by Nakagawa, Keiichi, Haga, Akihiro, Kida, Satoshi, Masutani, Yoshitaka, Yamashita, Hideomi, Takahashi, Wataru, Sakumi, Akira, Saotome, Naoya, Shiraki, Takashi, Ohtomo, Kuni, Iwai, Yoshio, Yoda, Kiyoshi

“…We propose a clinical workflow of stereotactic volumetric modulated arc therapy (VMAT) for a lung tumor from planning to tumor position verification using 4D…”
Get full text

PD-0043: Accuracy comparison of 3D and 4D CBCT based lung tumor registrations by way of in-treatment 4D CBCT analysis by Nakagawa, K, Haga, A, Takahashi, W, Yamashita, H, Imae, T, Kida, S, Masutani, Y, Sakumi, A, Ohtomo, K

Get full text

EP-1458 A COMPARISON OF THREE REGISTRATION METHODS USING 4D PLANNING CT AND ON-BOARD 4D CONE-BEAM CT FOR LUNG VMAT by Nakagawa, K, Masutani, Y, Haga, A, Yamashita, H, Takahashi, W, Sakumi, A, Kida, S, Saotome, N, Ohtomo, K, Yoda, K

Get full text

OC-0470 DOSE COMPARSION BETWEEN DIFFERENT RESPIRATORY PHASES DURING LUNG VMAT DELIVERY USING IN-TREATMENT 4D CONE-BEAM CT by Saotome, N, Sakumi, A, Kida, S, Onoe, T, Haga, A, Masutani, Y, Ohtomo, K, Yamashita, H, Nakagawa, K

Get full text

SU‐E‐J‐203: Determination of PTV Margin for Lung Tumor Using In‐Treatment 4D CBCT by Haga, A, Nakagawa, K, Yamashita, H, Takahashi, W, Sakumi, A, Masutani, Y, Kida, S, Saotome, N, Itoh, S, Shiraki, T, Ohtomo, K

“…Purpose: To determine a planning target volume (PTV) margin for lung cancer patients using a four‐dimensional cone‐beam CT (4D CBCT) acquired during volumetric…”
Get full text

SU‐E‐T‐530: Projection Image Correction for 4D VMAT‐CT by Saotome, N, Kida, S, Onoe, T, Sasaki, K, Imae, T, Tanaka, K, Sakumi, A, Masutani, Y, Haga, A, Nakagawa, K

“…Purpose: A Volumetric Modulated Arc Therapy (VMAT) provides a reconstruction images from MV portal imaging, named as “VMAT‐CT”. The purpose of this…”
Get full text

1175 poster BEAM'S EYE VIEW BASED VERIFICATION OF ACTUAL DELIVERY USING IN-TREATMENT 4D CONE-BEAM CT by Nakagawa, K, Haga, A, Yamashita, H, Kida, S, Saotome, N, Sakumi, A, Imae, T, Ohtomo, K, Masutani, Y, Yoda, K

Get full text

246 oral 4D-CT RECONSTRUCTION USING MV PORTAL IMAGING DURING VOLUMETRIC MODULATED ARC THERAPY by Kida, S, Saotome, N, Haga, A, Masutani, Y, Yamashita, H, Sakumi, A, Ohtomo, K, Keiichi, N

Get full text