Search Results - "Saijo, Yoshifumi"

Region-based SVD processing of high-frequency ultrafast ultrasound to visualize cutaneous vascular networks by Bhatti, Anam, Ishii, Takuro, Kanno, Naoya, Ikeda, Hayato, Funamoto, Kenichi, Saijo, Yoshifumi

“…•A novel region-based SVD filtering was devised to visualize skin micro-vasculature.•The imaging field was divided into two regions by identifying skin layers…”
Get full text

Comparative investigation of coherence factor weighting methods for an annular array photoacoustic microscope by Suzuki, Riku, Shintate, Ryo, Ishii, Takuro, Saijo, Yoshifumi

“…Abstract To achieve fine visualization of the peripheral microvascular networks, we have developed a photoacoustic (PA) microscope equipped with a four-channel…”
Get full text

A histoanatomical study of the fiber bundle forming the ‘Comma Sign,’ a critical marker of the torn edge of the subscapularis tendon by Arai, Ryuzo, Hagiwara, Yoshihiro, Saijo, Yoshifumi, Matsuda, Shuichi

“…Introduction The “Comma sign” is a well-known indicator of the subscapularis torn edge of the shoulder. We undertook a histoanatomical study of the fiber…”
Get full text

High-speed optical resolution photoacoustic microscopy with MEMS scanner using a novel and simple distortion correction method by Shintate, Ryo, Ishii, Takuro, Ahn, Joongho, Kim, Jin Young, Kim, Chulhong, Saijo, Yoshifumi

“…Optical resolution photoacoustic microscopy (OR-PAM) is a remarkable biomedical imaging technique that can selectively visualize microtissues with…”
Get full text

Hydrothermal synthesis and preliminary cytotoxicity assessment of gadolinium borate nanoparticles for neutron capture therapy by Mikami, Keita, Kanetaka, Hiroyasu, Furuya, Maiko, Yokota, Kotone, Saijo, Yoshifumi, Yokoi, Taishi, Kawashita, Masakazu

“…Neutron capture therapy, such as boron neutron capture therapy (BNCT) and gadolinium neutron capture therapy (GdNCT), has been attracting much attention as a…”
Get full text

A study on correction method of total acoustic power in presence of shielding in focused ultrasound treatment using acoustic radiation force imaging by Numahata, Erika, Yoshizawa, Shin, Umemura, Shin-ichiro, Ishii, Takuro, Saijo, Yoshifumi

“…Abstract High-intensity focused ultrasound (HIFU) therapy is a noninvasive treatment for cancer. Prediction of the HIFU treatment region in advance by…”
Get full text

Correction of phase rotation in pulse spectrum method for scanning acoustic microscopy and its application to measurements of cells by Nagaoka, Ryo, Kobayashi, Kazuto, Arakawa, Mototaka, Hasegawa, Hideyuki, Saijo, Yoshifumi

“…•Wiener filter can restore the degraded bandwidth of the signals.•Wiener filtering can improve the pulse length of the received signals.•We proposed the…”
Get full text

Multidirectional reception of photoacoustic signals for higher resolution imaging by Sato, Kanta, Shintate, Ryo, Fujiwara, Mitsuhiro, Saijo, Yoshifumi

“…The imaging of microvasculature of the synovial membrane is important for the early detection of rheumatoid arthritis (RA). Photoacoustic (PA) imaging is an…”
Get full text

Color Doppler shear wave elastography using commercial ultrasound machine with compensated transducer scanning delay by Hermawan, Norma, Ishii, Takuro, Saijo, Yoshifumi

“…Purpose Tissue elasticity can be measured and mapped using color Doppler elastography. In a previous study, a binary pattern of shear waves was observed using…”
Get full text

3D ultrasound imaging by synthetic transmit aperture beamforming using a spherically curved array transducer by Hayashi, Eiki, Kanno, Naoya, Shintate, Ryo, Ishii, Takuro, Nagaoka, Ryo, Saijo, Yoshifumi

“…Abstract Visualization of dermal circulation is important in the field of skin healthcare. We have developed a three-dimensional (3D) photoacoustic (PA)…”
Get full text

Usefulness of Right Ventricular Free Wall Strain Obtained with Two-Dimensional Speckle-Tracking Echocardiography in Patients with Repaired Tetralogy of Fallot and Pulmonary Regurgitation by Fujiwara, Junko, Tatebe, Shunsuke, Nochioka, Kotaro, Ota, Hideki, Funamizu, Yasuharu, Miki, Takashi, Saiki, Yoshikatsu, Yasuda, Satoshi, Saijo, Yoshifumi

“…Right ventricular (RV) dysfunction caused by chronic pulmonary regurgitation (PR) is a major determinant of clinical outcome in adults with repaired tetralogy…”
Get full text

Opportunistic Ultrasound Screening for Abdominal Aortic Aneurysm by Funamizu, Yasuharu, Goto, Hitoshi, Oda, Ayaka, Miki, Takashi, Saijo, Yoshifumi

“…Objective: In patients with abdominal aortic aneurysm (AAA), early detection and optimal elective treatment before rupture are desirable. In the absence of an…”
Get full text

Deduction of two-dimensional blood flow vector by dual angle diverging waves from a cardiac sector probe by Maeda, Moe, Nagaoka, Ryo, Ikeda, Hayato, Yaegashi, So, Saijo, Yoshifumi

“…Color Doppler method is widely used for noninvasive diagnosis of heart diseases. However, the method can measure one-dimensional (1D) blood flow velocity only…”
Get full text

Ultrasound vector flow imaging during veno-arterial extracorporeal membrane oxygenation in a thoracic aorta model by Yambe, Kenichiro, Ishii, Takuro, Yiu, Billy Y. S., Yu, Alfred C. H., Endo, Tomoyuki, Saijo, Yoshifumi

“…In veno-arterial extracorporeal membrane oxygenation (VA-ECMO) treatment, the mixing zone is a key hemodynamic factor that determines the efficacy of the…”
Get full text

Contribution of oxidative stress to the degeneration of rotator cuff entheses by Morikawa, Daichi, MD, PhD, Itoigawa, Yoshiaki, MD, PhD, Nojiri, Hidetoshi, MD, PhD, Sano, Hirotaka, MD, PhD, Itoi, Eiji, MD, PhD, Saijo, Yoshifumi, MD, PhD, Kaneko, Kazuo, MD, PhD, Shimizu, Takahiko, PhD

“…Background Rotator cuff degeneration is one of the multiple factors that lead to rotator cuff tears; however, the precise mechanism of such degeneration still…”
Get full text

A method for the design of ultrasonic devices for scanning acoustic microscopy using impulsive signals by Arakawa, Mototaka, Kanai, Hiroshi, Ishikawa, Kazuo, Nagaoka, Ryo, Kobayashi, Kazuto, Saijo, Yoshifumi

“…•A new plane-wave model to calculate loss of ultrasonic devices was developed.•Two point-focus-beam ultrasonic devices with a ZnO transducer were…”
Get full text

Numerical analysis of ultrasound propagation and reflection intensity for biological acoustic impedance microscope by Gunawan, Agus Indra, Hozumi, Naohiro, Yoshida, Sachiko, Saijo, Yoshifumi, Kobayashi, Kazuto, Yamamoto, Seiji

“…•Acoustic impedance microscope for biological tissue was proposed.•Calibration curve was obtained from acoustic field analysis.•The calibration curve was…”
Get full text

Blood flow imaging using singular value decomposition filter during high-intensity focused ultrasound exposure by Ikeda, Hayato, Yoshizawa, Shin, Maeda, Moe, Umemura, Shin-ichiro, Saijo, Yoshifumi

“…High-intensity focused ultrasound (HIFU) is a minimally invasive treatment modality to induce thermal coagulation. In clinical cases, noninvasive blood flow…”
Get full text

Development of Real-Time 3-D Photoacoustic Imaging System Employing Spherically Curved Array Transducer by Nagaoka, Ryo, Tabata, Takuya, Takagi, Ryo, Yoshizawa, Shin, Umemura, Shin-Ichiro, Saijo, Yoshifumi

“…Photoacoustic (PA) imaging is a promising imaging modality to visualize specific living tissues based on the light absorption coefficients without dyeing. In…”
Get full text

Quantitative evaluation of adhesion severity around subscapularis and its relationship with shoulder range of motion in frozen shoulder and rotator cuff disorder: an observational study using dynamic ultrasonography by Fujiwara, Mizuki, Hermawan, Norma, Suenaga, Takuya, Hagiwara, Yoshihiro, Saijo, Yoshifumi

“…This study aimed to evaluate the severity of adhesion between muscles in the shoulder joint using dynamic ultrasonography and to confirm whether adhesions…”
Get full text