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40 results on '"Yagyu, Yukinobu"'

17. Patterns of bone metastases from head and neck squamous cell carcinoma

Author

Suzuki, Ayako, primary, Kashiwagi, Nobuo, additional, Doi, Hiroshi, additional, Ishii, Kazunari, additional, Doi, Katsumi, additional, Kitano, Mutsukazu, additional, Kozuka, Takenori, additional, Hyodo, Tomoko, additional, Tsurusaki, Masakatsu, additional, Yagyu, Yukinobu, additional, and Nakanishi, Katsuyuki, additional

Published
2020
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19. Increased Pittsburgh Compound-B Accumulation in the Subcortical White Matter of Alzheimer's Disease Brain

Author

WAKABAYASHI, YUICHI, ISHII, KAZUNARI, HOSOKAWA, CHISA, HYODO, TOMOKO, KAIDA, HAYATO, YAMADA, MINORU, YAGYU, YUKINOBU, TSURUSAKI, MASAKATSU, KOZUKA, TAKENORI, SUGIMURA, KAZURO, and MURAKAMI, TAKAMICHI

Subjects
Male, Aniline Compounds, Articles, Middle Aged, White Matter, Thiazoles, Alzheimer Disease, Case-Control Studies, Positron-Emission Tomography, Humans, Female, Tissue Distribution, Carbon Radioisotopes, Radiopharmaceuticals, Aged
Abstract

Using 11C-Pittsburgh compound B (PiB)-PET and MRI volume data, we investigated whether white matter (WM) PiB uptake in Alzheimer's disease (AD) brain is larger than that of cortical PiB uptake-negative (PiB-negative) brain. Forty-five subjects who underwent both PiB-PET and MRI were included in the study (32 AD patients with cortical PiB-positive and 13 cortical amyloid -negative patients). Individual areas of gray matter (GM) and WM were segmented, then regional GM and WM standard uptake value ratio (SUVR) normalized to cerebellar GM with partial volume effects correction was calculated. Three regional SUVRs except WM in the centrum semiovale in the AD group were significantly larger than those in the PiB-negative groups. Frontal WM SUVR in the AD group vs frontal WM SUVR in the PiB-negative group was 2.57 ± 0.55 vs 1.64 ± 0.22; parietal, 2.50 ± 0.52 vs 1.74 ± 0.22; posterior cingulate, 2.84 ± 0.59 vs 1.73 ± 0.22; and WM in the centrum semiovale, 2.21 ± 0.53 vs 2.42 ± 0.36, respectively. We found that PiB uptake in AD brain is significantly larger than that in PiB-negative brain in the frontal, parietal and posterior cingulate subcortical WM, except in the centrum semiovale.

Published
2016

20. Spontaneously infarcted parotid tumours: MRI findings

Author

Kashiwagi, Nobuo, primary, Hyodo, Tomoko, additional, Ishi, Kazunari, additional, Maenishi, Osamu, additional, Enoki, Eisuke, additional, Chikugo, Takaaki, additional, Masakatsu, Tsurusaki, additional, Yagyu, Yukinobu, additional, kitano, Mutsukazu, additional, and Tomiyama, Noriyuki, additional

Published
2019
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24. MR imaging features of mammary analogue secretory carcinoma and acinic cell carcinoma of the salivary gland: a preliminary report

Author

Kashiwagi, Nobuo, primary, Nakatsuka, Shin ichi, additional, Murakami, Takamichi, additional, Enoki, Eisuke, additional, Yamamoto, Kazuhiro, additional, Nakanishi, Katsuyuki, additional, Chikugo, Takaaki, additional, Kurisu, Yoshitaka, additional, Kimura, Masatomo, additional, Hyodo, Tomoko, additional, Tsukabe, Akio, additional, Kakigi, Takahide, additional, Tomita, Yasuhiko, additional, Ishii, Kazunari, additional, Narumi, Yoshifumi, additional, Yagyu, Yukinobu, additional, and Tomiyama, Noriyuki, additional

Published
2018
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25. <Cases Reports> MR imaging of hydrogel scleral buckle as a late complication after retinal detachment surgery

Author

Ashikaga, Ryuichiro, Im, SungWoon, Yagyu, Yukinobu, Abe, Kosuke, Ono, Yukihiko, Matsumoto, Chota, and Murakami, Takamichi

Subjects
hydrogel implant, scleral buckle, magnetic resonance imaging, MIRAge1
Abstract

[Abstract] MIRAgel is a hydrogel implant introduced as a scleral buckling material in 1979.' It is no longer used because of late complications involvingits extrusion and intrusion. We report the MR imaging findings in two patients who developed late complications.

Published
2013

27. Utility of Amplatzer Vascular Plug with Preoperative Common Hepatic Artery Embolization for Distal Pancreatectomy with En Bloc Celiac Axis Resection

Author

Toguchi, Masafumi, primary, Tsurusaki, Masakatsu, additional, Numoto, Isao, additional, Hidaka, Syojiro, additional, Yamakawa, Miho, additional, Asato, Nobuyuki, additional, Im, SungWoon, additional, Yagyu, Yukinobu, additional, Matsuki, Mitsuru, additional, Takeyama, Yoshifumi, additional, and Murakami, Takamichi, additional

Published
2016
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29. Balloon-Occluded Transcatheter Arterial Chemoembolization for Hepatocellular Carcinoma: A Single-Center Experience

Author

Minami, Yasunori, primary, Minami, Tomohiro, additional, Chishina, Hirokazu, additional, Arizumi, Tadaaki, additional, Takita, Masahiro, additional, Kitai, Satoshi, additional, Yada, Norihisa, additional, Hagiwara, Satoru, additional, Tsurusaki, Masakatsu, additional, Yagyu, Yukinobu, additional, Ueshima, Kazuomi, additional, Nishida, Naoshi, additional, Murakami, Takamichi, additional, and Kudo, Masatoshi, additional

Published
2015
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36. Ring-shaped lateral ventricular nodules: an incidental finding on brain magnetic resonance imaging.

Author

Shimono, Taro, Hosono, Makoto, Ashikaga, Ryuichiro, Kumano, Seishi, Imaoka, Izumi, Yagyu, Yukinobu, Okada, Masahiro, Kuwabara, Masatomo, and Murakami, Takamichi

Subjects
CEREBRAL ventricles, BRAIN imaging, MAGNETIC resonance imaging, MEDICAL imaging systems, DIAGNOSTIC imaging, TUMORS
Abstract

We have occasionally seen ring-shaped lateral ventricular nodules <1 cm in diameter during routine brain magnetic resonance imaging (MRI). We investigated retrospectively clinical and MRI findings of the nodules. Review of radiological records was performed for 39,607 patients who underwent brain MRI between January 2001 and April 2008. Nodules were assessed for number, location, shape, and signal intensity, which was determined based on the range of signal intensity from gray to white matter on T1- and T2-weighted imaging. Fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted imaging (DWI), contrast enhancement characteristics, and serial MRI changes of nodules were assessed when available. Nine of 39,607 patients (0.023%) showed the nodules. No symptoms associated with the nodules. Among the nine patients, 11 nodules were identified (one nodule in seven patients (77.8%) and two nodules in two patients (22.2%)). Location was limited to the roof of the body for six nodules (54.5%) and the frontal horn for five patients (45.5%). All nodules (100%) were round and isointense on T1- and T2-weighted imaging. On FLAIR imaging of eight nodules, six (75%) were hyperintense, and two (25%) were isointense. On DWI of seven nodules, all nodules (100%) were isointense. None of seven nodules (0%) examined using postcontrast MRI showed enhancement. None of eight nodules (0%) examined using serial MRI (range, 4–60 months) showed changes in morphology over time. These nodules were incidentally encountered and shared similar MRI features. Although pathological confirmation was lacking in our cases, these nodules may be of nonaggressive nature. [ABSTRACT FROM AUTHOR]

Published
2009
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38. Guideline on the Use of Iodinated Contrast Media in Patients With Kidney Disease 2018.

Author

Isaka Y, Hayashi H, Aonuma K, Horio M, Terada Y, Doi K, Fujigaki Y, Yasuda H, Sato T, Fujikura T, Kuwatsuru R, Toei H, Murakami R, Saito Y, Hirayama A, Murohara T, Sato A, Ishii H, Takayama T, Watanabe M, Awai K, Oda S, Murakami T, Yagyu Y, Joki N, Komatsu Y, Miyauchi T, Ito Y, Miyazawa R, Kanno Y, Ogawa T, Hayashi H, Koshi E, Kosugi T, and Yasuda Y

Subjects
Acute Kidney Injury blood, Acute Kidney Injury chemically induced, Age Factors, Anti-Inflammatory Agents, Non-Steroidal adverse effects, Anti-Inflammatory Agents, Non-Steroidal pharmacology, Contrast Media administration & dosage, Contrast Media adverse effects, Creatinine blood, Diuretics adverse effects, Diuretics pharmacology, Humans, Prevalence, Prognosis, Renal Insufficiency, Chronic, Risk Factors, Saline Solution administration & dosage, United States epidemiology, Acute Kidney Injury diagnostic imaging, Acute Kidney Injury epidemiology, Contrast Media chemistry, Iodine, Radiography methods
Published
2019
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39. Increased Pittsburgh Compound-B Accumulation in the Subcortical White Matter of Alzheimer's Disease Brain.

Author

Wakabayashi Y, Ishii K, Hosokawa C, Hyodo T, Kaida H, Yamada M, Yagyu Y, Tsurusaki M, Kozuka T, Sugimura K, and Murakami T

Subjects
Aged, Carbon Radioisotopes pharmacokinetics, Case-Control Studies, Female, Humans, Male, Middle Aged, Positron-Emission Tomography, Radiopharmaceuticals pharmacokinetics, Tissue Distribution, Alzheimer Disease diagnostic imaging, Aniline Compounds pharmacokinetics, Thiazoles pharmacokinetics, White Matter diagnostic imaging
Abstract

Using 11C-Pittsburgh compound B (PiB)-PET and MRI volume data, we investigated whether white matter (WM) PiB uptake in Alzheimer's disease (AD) brain is larger than that of cortical PiB uptake-negative (PiB-negative) brain. Forty-five subjects who underwent both PiB-PET and MRI were included in the study (32 AD patients with cortical PiB-positive and 13 cortical amyloid -negative patients). Individual areas of gray matter (GM) and WM were segmented, then regional GM and WM standard uptake value ratio (SUVR) normalized to cerebellar GM with partial volume effects correction was calculated. Three regional SUVRs except WM in the centrum semiovale in the AD group were significantly larger than those in the PiB-negative groups. Frontal WM SUVR in the AD group vs frontal WM SUVR in the PiB-negative group was 2.57 ± 0.55 vs 1.64 ± 0.22; parietal, 2.50 ± 0.52 vs 1.74 ± 0.22; posterior cingulate, 2.84 ± 0.59 vs 1.73 ± 0.22; and WM in the centrum semiovale, 2.21 ± 0.53 vs 2.42 ± 0.36, respectively. We found that PiB uptake in AD brain is significantly larger than that in PiB-negative brain in the frontal, parietal and posterior cingulate subcortical WM, except in the centrum semiovale.

Published
2017

40. Contrast harmonic sonography-guided radiofrequency ablation therapy versus B-mode sonography in hepatocellular carcinoma: prospective randomized controlled trial.

Author

Minami Y, Kudo M, Chung H, Kawasaki T, Yagyu Y, Shimono T, and Shiozaki H

Subjects
Aged, Aged, 80 and over, Female, Hepatectomy methods, Humans, Male, Middle Aged, Prognosis, Prospective Studies, Treatment Outcome, Ultrasonography methods, Carcinoma, Hepatocellular diagnostic imaging, Carcinoma, Hepatocellular surgery, Contrast Media, Image Enhancement methods, Liver Neoplasms diagnostic imaging, Liver Neoplasms surgery, Surgery, Computer-Assisted methods
Abstract

Objective: The purpose of this study was to evaluate the effectiveness of contrast harmonic sonographic guidance in radiofrequency ablation of locally progressive hepatocellular carcinoma poorly depicted with B-mode sonography., Subjects and Methods: A series of 40 patients with hepatocellular carcinoma with local tumor progression poorly depicted with B-mode sonography were randomly treated with radiofrequency ablation guided by either contrast harmonic sonography (n = 20) or conventional B-mode sonography (n = 20). Unpaired Student's t tests were performed to compare numbers of treatment sessions., Results: Treatment analysis showed that the complete ablation rate after a single treatment session was significantly higher in the contrast harmonic sonography group than in the B-mode sonography group (94.7% vs 65.0%; p = 0.043) and that the number of treatment sessions was significantly lower in the contrast harmonic sonography group (mean, 1.1 +/- 0.2 vs 1.4 +/- 0.6; p =0.037)., Conclusion: Contrast harmonic sonography-guided radiofrequency ablation is an efficient technique for guiding further ablation of local tumor progression not clearly demarcated with B-mode sonography.

Published
2007
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