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8. General lectures (II)

Author

Karasawa, Y., Ōnuma, H., Suzuki, H., Okazaki, T., Yasui, A., Murakami, T., Furuya, K., Ohtsuki, M., Furuya, K., Ohtsuki, M., Sata, H., Kondo, T., Takada, H., Kawaguchi, K., Sai, S., Takeda, S., Kitagawa, M., Morooka, T., Shiraishi, T., Namiki, M., Kawauchi, H., Nakagawa, K., Kuramata, H., Yamaguchi, Y., Kabakino, T., Inokuchi, T., Wakisaka, J., Yamauchi, Y., Debuchi, T., Ogo, W., Yamasaki, C., Sigemori, M., Hashimoto, K., Shirozu, T., Kaibara, N., Inokuchi, K., Soejima, K., Hiyama, T., Wakita, M., Ikemoto, T., Hayasaka, H., Fukui, S., Takeda, T., Aoyama, N., Takada, Y., Saheki, Y., Yoshida, Y., Minagawa, K., Okuyama, T., Yamamitsu, S., Konishi, Y., Ishimatsu, N., Murai, S., Nukaga, A., Toyama, S., Watanabe, Y., Mizushima, N., Abe, M., Maruyama, K., Yoshino, K., Suzuki, T., Akisato, K., Kitajima, M., Tabata, T., Hashimoto, M., Tanaka, T., Nakagawa, Y., Ishii, Y., Inoue, M., Katayama, S., Nakano, Y., Fukuda, M., Takaki, M., Hyodo, H., Kobayashi, J., Nishikawa, H., Morimoto, K., Takagi, T., Sako, S., Tomoda, H., Soejima, K., Furusawa, M., Inokuchi, K., Sassa, R., Unuma, T., Iwase, T., Yoshioka, T., Kusakabe, M., Iio, M., Kobayashi, S., Kizu, M., Kasugai, T., Yoshida, K., Kembo, T., Yoshida, T., Suga, Y., Suguro, T., Kono, Y., Mitsui, S., Nagamachi, Y., Nakamura, T., Suto, H., Higuchi, T., Kobayashi, J., Onai, M., Isizuka, K., Takei, A., Simoda, M., Sekiguchi, T., Shichijo, K., Akashi, Y., Mori, K., Ogasawara, K., Tanaka, R., Yoshikawa, K., Takahashi, T., Ogata, T., Tanaka, S., Seito, T., Matsuda, H., Imajo, T., Moriyasu, K., Takata, Y., Kamei, H., Murai, H., Takemitsu, T., Kanemitsu, T., Ishii, M., Imaizumi, M., Kondo, T., Inada, M., Glass, G. B. J., Ebata, K., Yamanaka, N., Watanabe, S., Yoshida, Y., Mori, H., Tsukasa, S., Sato, H., Chuman, Y., Nakahara, N., Taniguchi, H., Ehira, S., Hori, M., Irisa, T., Yokoyama, H., Kunieda, T., Ogushi, Y., Kawakami, K., Kuroda, M., Kuroda, M., Sasaki, D., SŌma, S., Yanagiya, S., Munakata, A., Matsunaga, F., Abiko, M., Ohuchi, H., Tai, C., Kawashima, T., Oosawa, W., Asakura, H., Senba, H., Hatayama, T., Yukawa, K., Konishi, T., Miyata, M., Shimazu, H., Kinoshita, T., Nukada, K., Yamagishi, T., Harada, K., Nakano, S., Yoshioka, T., Sakai, T., Shindo, K., Fukushima, K., Odagiri, S., Tarao, K., Saito, Y., Ohara, K., Sasaki, S., Tomoda, T., Kaneda, N., Yamaguchi, H., Hayashi, T., Tanaka, T., Suzuki, J., Kofune, Y., Urase, A., Yamagata, A., Sugino, N., Hatano, M., Oshima, K., Tanabe, T., Ohto, M., Okuda, K., Mitani, E., Yamamoto, S., Kobayashi, K., Ono, T., Kamata, T., Mohri, S., Makiishi, H., Kitano, A., Suga, Y., Tatumi, S., Mizuno, S., Tsumori, K., Shimizu, T., Nomatsu, K., Hiratsuka, H., Ichinose, M., Asakura, H., Morishita, T., Morita, A., Matsuzaki, S., Oda, M., Kamegaya, K., Tuchiya, M., Sambe, K., Murakami, Y., Machii, A., Nitta, Y., Aiso, Y., Kitahara, N., Sato, M., Yoshizawa, Y., Hishinuma, Y., Nagasako, H., Nao, Y., Harada, H., Mishima, K., Yamagata, Y., Mandai, M., Kondo, Y., Uchida, Y., Takizawa, S., Kinoshita, S., Kurihara, T., Sakumoto, K., Okamoto, H., Sakurai, S., Ishitobi, S., Tanaka, H., Ishihara, K., Kuno, N., Kasugai, T., Aoki, I., Kizu, M., Nakano, S., Suzuki, T., Horiguchi, Y., Kitamura, K., Miwa, M., Okada, K., Takeda, T., Endo, Y., Tatsuta, M., Morii, T., Okuda, S., Tamura, H., Fukuda, K., Sato, K., Koizumi, K., Takebe, T., Yamagata, S., Noda, S., Toda, Y., Hayakawa, T., Nakajima, S., Hitokawa, S., Nakano, S., Suzuki, T., Takeda, T., Sawabu, N., Hirose, S., Takada, A., Takeuchi, J., Kuniyasu, Y., Kakehi, H., Uchiyama, G., Arimizu, N., Okuda, K., Ohto, M., Kuroda, T., Saishyo, H., Tanabe, T., Takashima, T., Shin, M., Akashi, M., Moriyama, T., Uchimura, M., Tsuchiya, R., Kakizaki, G., Noto, N., Oizumi, T., Soeno, T., Maeta, T., Saito, T., Naito, S., Saito, T., Shimizu, K., Nakajima, T., Tanaka, M., Kin, T., Sugiyama, S., Takayama, H., Tomono, T., Kamijo, N., Kimura, Y., Matsuo, T., Shimada, M., Terashima, B., Oda, M., Furuta, S., Kashiwabara, K., Oka, S., Sugiura, M., Karasawa, M., Ito, K., Takei, K., Ishihara, Y., Kuroda, A., Sato, N., Noro, T., Ishikawa, H., Tajima, Y., Hashihira, S., Nishii, T., Mori, R., Takeda, Y., Yamadori, T., Wakabayashi, A., Iwata, S., Shiraso, M., Tokutake, K., Sato, H., Matsuno, S., Haga, N., Saito, Y., Suda, Y., Sato, T., Kuroda, T., Tsunoda, T., Kamata, T., Kanno, H., Aneha, Y., Kikuchi, K., Abe, M., Imamura, K., Kondo, O., Yuki, Y., Omata, S., Okamoto, S., Nagahara, H., Motoyama, H., Watanabe, H., Maekawa, T., Miyakawa, T., Watanabe, Y., Anazawa, Y., Murakami, T., Motoyama, T., Kawamura, T., Kusaka, Y., Sugiura, M., Shima, F., Abe, S., Ichihara, S., Nomura, M., Ushiyama, T., Futagawa, S., Ishida, M., Obata, G., Sugiyama, Y., Suzuki, K., Abo, M., Takeuchi, M., Tann, E., Kimura, K., Iwaya, A., Takahashi, H., Ono, K., Inoue, J., Miyaishi, S., Sasaki, T., Kuroyanagi, Y., Sato, T., Kato, H., Kido, C., Hibino, K., Kishikawa, M., Takeuchi, T., Murate, H., Tanabe, A., Kozuka, M., Ito, M., Kato, N., Yazaki, Y., Goto, K., Miyaji, M., Suzuki, K., Ito, K., Yokoi, J., Endo, I., Kato, S., Miyazaki, M., Murayama, N., Kawamura, A., Ono, T., Ohto, M., Murohisa, B., Uchimura, M., Hirai, S., Akashi, M., Furukawa, M., Nakashima, G., Furuse, H., Tsuchiya, R., Fukuda, T., Hanyu, F., Sakakibara, N., Suzuki, H., Ide, H., Momma, K., Nagashima, H., Matsushiro, T., Suzuki, N., Saitoh, T., Nakamura, N., Takahashi, W., Maeta, T., Hatanaka, T., Kobayashi, N., Sato, T., Hagano, M., Furusawa, T., Osuga, T., Portman, O. W., Ogata, T., Tanaka, S., Takahashi, K., Kibayashi, H., Yamazaki, H., Komaki, K., Tanimura, H., Hikasa, Y., Ogawa, R., Nakagawa, H., Osada, M., Koizumi, H., Katayama, M., Sakamoto, H., Manome, T., Sesoko, M., Kobayashi, M., Komine, Y., Saito, Y., Watanabe, N., Okabe, Y., Ogino, M., Naruke, T., Hoshika, T., Miyano, T., Tsuneoka, K., Kitajima, S., Nakada, I., Sasamori, Y., Munakata, H., Tanaka, K., Oguro, H., Numata, T., Oh-Uti, K., Yoshida, Y., Goto, S., Yanagiya, S., Takashina, K., Matsunaga, F., Sasaki, G., Kimura, A., Sasagawa, T., Takahashi, G., Sugiyama, H., Iwaki, K., Okada, S., Koizumi, H., Iwasaki, M., Kawashima, Y., Kaneda, H., Takahashi, K., Honda, T., Ariga, K., Sa, Woo pak, Hozawa, H., Hiratsuka, H., Susuki, T., Kato, Y., Mizuno, T., Oya, H., Yoshino, S., and Hattori, T.

Published
1973
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9. Adrenal adenomas: characteristic hyperintense rim sign on fat-saturated spin-echo MR images

Author

Hiroshi Oba, K Toyama, Kiyoshi Koizumi, Uchiyama G, Kachi K, Monzawa S, Tomoaki Ichikawa, Kuni Ohtomo, Y Nogata, and Motoshi Yamaguchi

Subjects
Male, medicine.medical_specialty, Metastatic lesions, Adenoma, Adrenal Gland Neoplasms, Sensitivity and Specificity, Diagnosis, Differential, Adrenal masses, Adrenal Glands, medicine, Humans, Adrenal adenoma, Radiology, Nuclear Medicine and imaging, Observer Variation, medicine.diagnostic_test, business.industry, Magnetic resonance imaging, Middle Aged, medicine.disease, Magnetic Resonance Imaging, Adrenal Cortex Neoplasms, Adrenocortical Adenoma, Spin echo, Female, Radiology, Mr images, business, Sign (mathematics)
Abstract

PURPOSE: To determine whether adrenal adenomas can be differentiated from metastases on fat-saturated magnetic resonance (MR) images. MATERIALS AND METHODS: Twenty-eight adrenal adenomas and 20 metastatic lesions were imaged at 1.5 T by means of fat-saturated T1- and T2-weighted and gadolinium-enhanced T1-weighted sequences. The authors evaluated visually whether structures of high signal intensity (hyperintense rim sign) could be observed in the outer margin of the adrenal masses. RESULTS: Twenty-six of 28 adrenal adenomas revealed the hyperintense rim sign on at least one kind of fat-saturated image, compared with only one of 20 metastases. The sensitivity of the hyperintense rim sign as suggestive of adrenal adenoma was 92%, specificity was 95%, and overall accuracy was 94%. CONCLUSION: The hyperintense rim sign is characteristic of adrenal adenomas. Thus, adrenal adenomas can be differentiated from metastases by means of this new imaging sign on fat-saturated MR images.

Published
1994
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11. <Case Report> High-Dose-Rate Interstitial Radiotherapy for the Glioblastoma Multiforme

Author

UCHIYAMA, G., OGATA, H., ARAKI, T., KOIZUMI, K., HlHARA, T., KACHI, K., MONZAWA, S., MATSUSAKO, M., AKIYAMA, S., SANO, H., FUKAMACHI, A., and NUKUI, H.

Subjects
CT compatible stereotactic head holder, glioblastoma multiforme, high-dose-rate interstitial radiotherapy, Iridium-192-equipped remote-afterloading system, nervous system diseases
Abstract

Glioblastoma multiforme is characterized by its resistance to any kind of treatment. We report a patient with recurrent glioblastoma multiforme treated by intraoperative high-dose-rate interstitial rediotherapy with an Iridium-192-equipped remote-afterloading system. This technique was effective only in preventing tumor growth for a few months.

Published
1990

13. Contrast-enhanced dynamic MRI of adrenal masses: classification of characteristic enhancement patterns

Author

K. Nasu, Uchiyama G, Kuni Ohtomo, H. Fujimoto, and Tomoaki Ichikawa

Subjects
Adenoma, Adult, Male, medicine.medical_specialty, Gadolinium, media_common.quotation_subject, Adrenal Gland Neoplasm, Adrenal Gland Neoplasms, chemistry.chemical_element, Pheochromocytoma, Medicine, Contrast (vision), Humans, Radiology, Nuclear Medicine and imaging, Tuberculoma, media_common, Aged, Retrospective Studies, medicine.diagnostic_test, business.industry, Magnetic resonance imaging, General Medicine, Middle Aged, medicine.disease, Magnetic Resonance Imaging, Neoplasms, Neuroepithelial, chemistry, Dynamic contrast-enhanced MRI, Female, Radiology, business, Nuclear medicine
Abstract

This study evaluated the usefulness of dynamic MRI to differentiate various adrenal tumours.Sixty-five adrenal tumours (28 adenomas, 22 metastases, seven phaeochromocytomas, five neurogenic tumours and three tuberculous granulomas) were evaluated with gadolinium-enhanced dynamic MRI (13 at 0.5 T, 52 at 1.5 T). In this technique, a series of 12 sequential images (gradient-echo images at 0.5 T and spin-echo images at 1.5 T) were obtained up to 21 min after bolus administration of 0.1 mmol/kg Gd-DTPA.All 28 adenomas showed peak enhancement in the early phase (2 min) and quick washout. Fourteen of 22 metastases showed peak enhancement in the early or middle phase (9 min) and slow washout. Six of seven phaeochromocytomas revealed marked peak enhancement in the early phase and little washout. All neurogenic tumours showed gradually increasing enhancement. Granulomas showed little enhancement. As a result, only 14 adrenal masses (27/65, 42%) were correctly classified according to contrast enhancement patterns. However, if we consider each type of enhancement pattern to be specific to adenoma, metastasis, phaeochromocytoma, neurogenic tumour and tuberculous granuloma respectively, 56 of the 65 adrenal masses (86%) could be classified. Seven of the indistinguishable nine tumours were performed at 0.5 T system using gradient-echo sequences.Dynamic MR imaging at 1.5 T is useful in the differentiation of adrenal masses. Imaging at 0.5 T with gradient-echo sequences seems less useful to distinguish adenomas from metastases.

Published
1995

15. Amyotrophic lateral sclerosis: T2 shortening in motor cortex at MR imaging

Author

Kuni Ohtomo, Hiroshi Oba, Y Nogata, Tsutomu Araki, Kachi K, Zenji Shiozawa, M Kobayashi, Kiyoshi Koizumi, Monzawa S, and Uchiyama G

Subjects
Male, Pathology, medicine.medical_specialty, T2 shortening, Iron, Iron deposition, Autopsy, Cortex (anatomy), medicine, Humans, Radiology, Nuclear Medicine and imaging, Amyotrophic lateral sclerosis, Brain Chemistry, medicine.diagnostic_test, business.industry, Amyotrophic Lateral Sclerosis, Motor Cortex, Brain, Magnetic resonance imaging, Middle Aged, medicine.disease, Mr imaging, Magnetic Resonance Imaging, medicine.anatomical_structure, Female, business, Motor cortex
Abstract

PURPOSE: To determine whether decreased signal intensity of the motor cortex (T2 shortening) at magnetic resonance (MR) imaging is a useful finding for supporting the diagnosis of amyotrophic lateral sclerosis (ALS). MATERIALS AND METHODS: High-field-strength (1.5-T) MR images of 15 patients (seven men and eight women, aged 28-80 years) and 49 neurologically normal age-matched control patients were examined for T2 shortening in the motor cortex. In addition, brains of patients with ALS were examined at autopsy. RESULTS: The MR images of 14 of the 15 patients showed T2 shortening in precentral cortices, while the images of all but one of the control patients showed no such finding. In three of eight brains at autopsy, sections from the precentral cortex showed sparsely distributed, intensely stained astrocytes and macrophages. CONCLUSION: Abnormal iron deposition associated with the degenerative process could be the source of T2 shortening, which is a useful MR imaging finding in the diagnosis of ALS.

Published
1993

26. Giant calcifying epithelioma of Malherbe (pilomatrixoma): imaging features.

Author

Ichikawa, T., Nakajima, Yoichiro, Fujimoto, Hajime, Koyama, Akihiro, Honma, Mitsuo, Yatsuzuka, Mitsuo, Ohtomo, Kuni, Uchiyama, Guio, Ushigome, Shinichiro, Ohba, Satoru, Nakajima, Y, Fujimoto, H, Koyama, A, Honma, M, Yatsuzuka, M, Ohtomo, K, Uchiyama, G, Ushigome, S, and Ohba, S

Abstract

We present a case of giant calcifying epithelioma of Malherbe (pilomatrixoma) in the right upper arm of a 62-year-old man. It measured 18 x 12 x 8 cm in size, making it the largest of all the cases reported previously. CT clearly demonstrated a well-defined, subcutaneous mass with amorphous calcifications. The mass showed intermediate signal intensity on T2*-weighted MR images and slight contrast uptake on contrast-enhanced MR images. Histopathologically, this tumor showed no aggressive or malignant nature. The patient is without evidence of recurrence or metastasis 3 years following the resection. [ABSTRACT FROM AUTHOR]

Published
1997
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31. Hepatic schistosomiasis japonica identified by CT

Author

Kazunari Yamada, J Okada, Kazushige Hayakawa, Uchiyama G, Tsutomu Araki, and Hayashi S

Subjects
Male, medicine.medical_specialty, Pathology, Liver Diseases, Parasitic, Hepatic surface, Gastroenterology, Japonica, X ray computed, Internal medicine, Humans, Medicine, Radiology, Nuclear Medicine and imaging, Hepatic schistosomiasis, Aged, biology, business.industry, Calcinosis, Middle Aged, biology.organism_classification, medicine.disease, Liver, Schistosomiasis japonica, Hepatocellular carcinoma, Female, Tomography, X-Ray Computed, business, Hepatic fibrosis
Abstract

We reviewed the CT examinations of 17 patients who had hepatic schistosomiasis japonica and noted peculiar hepatic calcifications in 15 cases and a notch on the hepatic surface in six. A hepatocellular carcinoma was found in six patients. The calcifications and notch appeared to indicate the degree of hepatic fibrosis but did not correlate with cirrhotic deformation.

Published
1985
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32. Hepatocellular carcinoma: Metastatic abdominal lymph nodes identified by computed tomography

Author

Toshihiko Hihara, Masahito Karikomi, Tsutomu Araki, Uchiyama G, and Kachi K

Subjects
Male, medicine.medical_specialty, Carcinoma, Hepatocellular, Urology, Computed tomography, Metastasis, Internal medicine, medicine, Carcinoma, Humans, Radiology, Nuclear Medicine and imaging, Lymph node, Radiological and Ultrasound Technology, medicine.diagnostic_test, business.industry, Liver Neoplasms, Gastroenterology, General Medicine, Middle Aged, Hepatology, medicine.disease, digestive system diseases, medicine.anatomical_structure, Abdominal Neoplasms, Lymphatic Metastasis, Abdominal lymph nodes, Hepatocellular carcinoma, Radiology, Tomography, Tomography, X-Ray Computed, business
Abstract

Out of 79 consecutive cases of hepatocellular carcinoma (HCC) examined with computed tomography (CT), five patients revealed metastatic swollen abdominal lymph nodes. Involved were portal, retropancreatic, common hepatic, superior mesenteric, and paraaortic nodes. CT appeared to be an excellent modality in the diagnosis of metastatic abdominal lymph nodes of HCC.

Published
1988
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34. Percutaneous transhepatic cavography of dual obstruction of the inferior vena cava

Author

Uchiyama G, Tsutomu Araki, Sanshin Hayashi, Junichi Okada, and Kazushige Hayakawa

Subjects
Male, medicine.medical_specialty, Percutaneous, Diaphragmatic breathing, Vena Cava, Inferior, Iliac Vein, Thrombophlebitis, Inferior vena cava, chemistry.chemical_compound, Occlusion, medicine, Humans, Radiology, Nuclear Medicine and imaging, Ultrasonics, Creatinine, business.industry, Thrombosis, General Medicine, Middle Aged, medicine.disease, Surgery, chemistry, medicine.vein, Varices, Nuclear medicine, business, Tomography, X-Ray Computed
Abstract

Obstruction of the inferior vena cava (IVC) occurs in any segment, but more commonly in the infrarenal and diaphragmatic segments. However, occlusion in both segments has rarely been encountered. We have successfully opacified the intervening segment between two occluded segments, confirmed its patency and clarified its detailed anatomy by percutaneous transhepatic inferior vena cavography (PTIVC) in a patient. A 52-year-old man presented with repeated episodes of thrombophlebitis in his lower extremities and prominent subcutaneous varices of the trunk. Laboratory data disclosed impaired hepatic and normal renal function: total serum bilirubin 2.9 mg/dl, direct bilirubin 1.6 mg/dl, alkaline phosphatase 465 IU/l, leucine aminopeptidase 125 IU/l, γ-glutamyl transpeptidase 293 IU/l, glutamate oxaloacetate transaminase 43 IU/l, glutamic pyruvic transaminase 26 IU/l, urea nitrogen 15 mg/dl and creatinine 0.5 mg/dl.

Published
1986

35. Accessory lateral segmental branch of the portal vein

Author

Kazushige Hayakawa, Uchiyama G, Tsutomu Araki, and Hayashi S

Subjects
Male, medicine.medical_specialty, Vena porta, Coronary Vein, business.industry, Portal Vein, Portal vein, Middle Aged, medicine.disease, Esophageal and Gastric Varices, Right gastric vein, Surgery, Radiography, medicine.anatomical_structure, Esophageal varices, Hypertension, Portal, cardiovascular system, medicine, Portal hypertension, Humans, Radiology, Nuclear Medicine and imaging, Radiology, Vein, business, Varices
Abstract

An accessory lateral segmental branch of the protal vein was found in a patient with esophageal varices. This rare anomalous branch should not be mistaken for a coronary vein supplying varices.

Published
1985

36. Intraluminal papillary carcinoma of the gallbladder: prognostic value of computed tomography and sonography

Author

Uchiyama G, Kachi K, Toshihiko Hihara, Tsutomu Araki, and Masahito Karikomi

Subjects
medicine.medical_specialty, Metastatic lesions, Urology, Computed tomography, Internal medicine, medicine, Humans, Radiology, Nuclear Medicine and imaging, Ultrasonography, Radiological and Ultrasound Technology, medicine.diagnostic_test, business.industry, Gallbladder, Gastroenterology, Cancer, General Medicine, Hepatology, medicine.disease, Prognosis, Carcinoma, Papillary, medicine.anatomical_structure, Gallbladder Neoplasms, Radiology, Papillary carcinoma, Gallbladder Neoplasm, business, Tomography, X-Ray Computed
Abstract

Twenty-seven consecutive cases with a prospective diagnosis of cancer of the gallbladder were analyzed to clarify the computed tomographic (CT) and ultrasonographic features, behavior, and prognosis of intraluminal papillary carcinoma (n = 7) of the organ. With CT and ultrasonography, these intraluminal carcinomas were further classified into 3 subtypes: single polyp, multiple polyp, and jam-packed gallbladder. Preoperative diagnosis, evaluation of local invasiveness, and detection of metastatic lesions were reliably done. Carcinomas of this type were locally less invasive, less frequently metastasized, and resulted in a longer survival than the other massive and thickened-wall carcinomas.

Published
1988

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