Radiation medicine最新文献_第4页

Diffusion tensor imaging of the brain: effects of distortion correction with correspondence to numbers of encoding directions 脑弥散张量成像:与编码方向数对应的失真校正效果

Radiation medicine Pub Date : 2008-10-31 DOI: 10.1007/s11604-008-0262-7

T. Yoshikawa, S. Aoki, O. Abe, N. Hayashi, Y. Masutani, T. Masumoto, H. Mori, Yoshiroh Satake, K. Ohtomo

引用次数: 11

Is targeted reconstruction necessary for evaluating contrast-enhanced chest computed tomography using a liquid crystal display monitor? 使用液晶显示器评估对比增强胸部计算机断层扫描是否需要目标重建?

Radiation medicine Pub Date : 2008-10-31 DOI: 10.1007/s11604-008-0260-9

Y. Ozawa, M. Hara, Hidekazu Oshima, M. Kitase, Kazuya Ohashi, Y. Shibamoto

引用次数: 0

Initial experience of using the filter protection device during carotid artery stenting in Japan. 日本颈动脉支架植入术中使用过滤器保护装置的初步经验。

Radiation medicine Pub Date : 2008-10-01 DOI: 10.1007/s11604-008-0283-2

Katsutoshi Takayama, Hiroyuki Nakagawa, Satoru Iwasaki, Toshiaki Taoka, Toshiteru Miyasaka, Kaoru Myouchin, Takeshi Wada, Masahiko Sakamoto, Akio Fukusumi, Ichiro Nakagawa, Shinichiro Kurokawa, Kimihiko Kichikawa

引用次数: 6

MDCT demonstration of intraarticular gas in the glenohumeral joint and sternoclavicular joint with reference to arm position. 肩关节和胸锁关节关节内气体的MDCT显示与臂位相关。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0253-8

Haruhiko Ito, Takeharu Yoshikawa, Naoto Hayashi, Kuni Ohtomo

{"title":"MDCT demonstration of intraarticular gas in the glenohumeral joint and sternoclavicular joint with reference to arm position.","authors":"Haruhiko Ito, Takeharu Yoshikawa, Naoto Hayashi, Kuni Ohtomo","doi":"10.1007/s11604-008-0253-8","DOIUrl":"https://doi.org/10.1007/s11604-008-0253-8","url":null,"abstract":"Purpose: Our purpose was to investigate the frequency of intraarticular gas in the glenohumeral joint and sternoclavicular joint, along with the influence of the patient's arm position.Materials and methods: Multidetector-row computed tomography (MDCT) scan on a total of 104 healthy subjects was investigated retrospectively. Raised-arm and lowered-arm positions were used sequentially, and the presence of intraarticular gas was investigated.Results: While the arms were in a raised position, intraarticular gas was observed in the glenohumeral joint about 9% of all subjects and in the sternoclavicular joint about 20% of all subjects. Intraarticular gas in the most subjects disappeared when the arms were lowered.Conclusion: When scanning with the arms in a raised position, intraarticular gas was seen in the glenohumeral and/or and sternoclavicular joint, and disappeared in most cases when the body position was changed. Such intraarticular gas is thought to result from traction of the limbs and is considered clinically insignificant.","PeriodicalId":49640,"journal":{"name":"Radiation medicine","volume":"26 7","pages":"422-6"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s11604-008-0253-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27656041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Quantitative MDCT analysis of pulmonary solid nodules using three parameters. 三参数肺实性结节的MDCT定量分析。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0246-7

Naoki Kutuya, Yutaka Ozaki, Yoshihisa Kurosaki

{"title":"Quantitative MDCT analysis of pulmonary solid nodules using three parameters.","authors":"Naoki Kutuya, Yutaka Ozaki, Yoshihisa Kurosaki","doi":"10.1007/s11604-008-0246-7","DOIUrl":"https://doi.org/10.1007/s11604-008-0246-7","url":null,"abstract":"Purpose: The purpose of this prospective study was to perform quantitative multidetector computed tomography (MDCT) analysis of pulmonary solid nodules using three parameters (long-short ratio, compactness, and intranodular CT number) and to evaluate the usefulness of each parameter in the differentiation of the nodules.Materials and methods: Seventy solitary pulmonary nodules with a long axis length of 5-30 mm were examined using one multidetector CT (MDCT) system and one three-dimensional (3D) system, and the findings regarding the three parameters were statistically analyzed among five diseases (hamartoma, organizing pneumonia, adenocarcinoma, squamous cell carcinoma, and metastasis).Results: The long-short ratio of the pulmonary nodule showed no significant differences among five diseases. The compactness showed significant differences (P < 0.05) in five pairs of diseases. Intranodular CT number showed significant differences (P < 0.05) in three pairs of diseases.Conclusion: Our results are insufficient for the complete differentiation of pulmonary solid nodules. However, among the three parameters, compactness and intranodular CT number contribute somewhat to the differentiation of pulmonary nodules.","PeriodicalId":49640,"journal":{"name":"Radiation medicine","volume":"26 7","pages":"389-95"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s11604-008-0246-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27655504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synchronous spontaneous arteriovenous fistula and aneurysm of the deep femoral artery incidentally found in a patient with aortic aneurysmal dissection. 偶然发现的同步自发性动静脉瘘和股深动脉动脉瘤患者的主动脉瘤夹层。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0244-9

Shinichi Nakamura, Takeshi Sugahara, Toshiaki Watanabe, Toshiya Koyanagi, Yasuyuki Yamashita

引用次数: 2

Pleomorphic adenoma of the breast. 乳腺多形性腺瘤。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0250-y

Yuji Mizukami, Teruhiko Takayama, Akihiro Takemura, Katsuhiro Ichikawa, Masahisa Onoguchi, Toshiaki Miyati, Takao Taniya

引用次数: 7

Retroperitoneal well-differentiated inflammatory liposarcoma: a diagnostic dilemma. 腹膜后高分化炎性脂肪肉瘤:诊断困境。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0255-6

Rinsaku Kawano, Akihiro Nishie, Kengo Yoshimitsu, Hiroyuki Irie, Tsuyoshi Tajima, Masakazu Hirakawa, Kousei Ishigami, Yasuhiro Ushijima, Daisuke Okamoto, Hidetake Yabuuchi, Akinobu Taketomi, Yunosuke Nishihara, Nobuhiro Fujita, Hiroshi Honda

{"title":"Retroperitoneal well-differentiated inflammatory liposarcoma: a diagnostic dilemma.","authors":"Rinsaku Kawano, Akihiro Nishie, Kengo Yoshimitsu, Hiroyuki Irie, Tsuyoshi Tajima, Masakazu Hirakawa, Kousei Ishigami, Yasuhiro Ushijima, Daisuke Okamoto, Hidetake Yabuuchi, Akinobu Taketomi, Yunosuke Nishihara, Nobuhiro Fujita, Hiroshi Honda","doi":"10.1007/s11604-008-0255-6","DOIUrl":"https://doi.org/10.1007/s11604-008-0255-6","url":null,"abstract":"We present a case of retroperitoneal well-differentiated inflammatory liposarcoma that was extremely difficult to diagnose preoperatively. Computed tomography and magnetic resonance images showed a 5-cm homogeneous soft-tissue mass with a decreased apparent diffusion coefficient and without fat component in the retroperitoneum. Minimal fat stranding was detected around the mass. The preoperative working diagnosis was malignant lymphoma or inflammatory pseudotumor, whereas the final diagnosis after surgery was well-differentiated inflammatory liposarcoma. As a result, only a large component of lymphoid infiltration was recognized as a tumor preoperatively, and minimal fat stranding represented a component of lipoma-like liposarcoma. In this entity, a lipomatous component could easily be missed on radiologic imaging because of the conspicuity of lymphoid infiltration. We should consider the possibility of this variant when we evaluate a retroperitoneal tumor.","PeriodicalId":49640,"journal":{"name":"Radiation medicine","volume":"26 7","pages":"450-3"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s11604-008-0255-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27656047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Simultaneous microwave ablation using multiple antennas in explanted bovine livers: relationship between ablative zone and antenna. 牛肝脏多天线同步微波消融:消融区与天线的关系。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0251-x

Fumiyoshi Oshima, Koichiro Yamakado, Atsuhiro Nakatsuka, Haruyuki Takaki, Masashi Makita, Kan Takeda

{"title":"Simultaneous microwave ablation using multiple antennas in explanted bovine livers: relationship between ablative zone and antenna.","authors":"Fumiyoshi Oshima, Koichiro Yamakado, Atsuhiro Nakatsuka, Haruyuki Takaki, Masashi Makita, Kan Takeda","doi":"10.1007/s11604-008-0251-x","DOIUrl":"https://doi.org/10.1007/s11604-008-0251-x","url":null,"abstract":"Purpose: Our purpose was to determine the optimal antenna spacing to achieve large ablative zones without indentations when microwave ablation is performed with simultaneous activation of two or three antennas.Materials and methods: Microwave ablation was performed with single-antenna activation and simultaneous activation of two or three antennas with a spacing of 1.5, 2.0, 2.5, or 3.0 cm in explanted bovine livers. Microwave energy was applied for 10 min with a power of 45 W. The shapes and sizes of the ablative zones created were recorded and compared.Results: The shape of the ablative zone was ellipsoid in the axial plane (along the antenna axis) and spherical in the transverse plane (perpendicular to the antenna axis) in single-antenna ablation. The ablative zones were spherical or ellipsoid in both the axial and transverse planes in two-and three-antenna ablation with an antenna spacing of 2.0 cm or less. Indentations were observed between the ablative zones created by the antennas when the spacing was 2.5 cm or more, reducing the minimum transverse diameter. When two-or three-antenna ablation was performed with a spacing of 2.0 cm or less, the axial and minimum transverse diameters were significantly larger than in single-antenna ablation. The largest volume (almost two or three times the single-activation volume) was achieved in two-or three-antenna ablation with an antenna spacing of 2.0 cm.Conclusion: We found that simultaneous microwave ablation using multiple microwave antennas creates large ablative zones without indentations when multiple antennas are activated with an antenna spacing of 2.0 cm or less.","PeriodicalId":49640,"journal":{"name":"Radiation medicine","volume":"26 7","pages":"408-14"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s11604-008-0251-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27655507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 39

Spontaneous internal oblique hematoma successfully treated by transcatheter arterial embolization. 经导管动脉栓塞治疗自发性内斜血肿成功。

Radiation medicine Pub Date : 2008-08-01 Epub Date: 2008-09-04 DOI: 10.1007/s11604-008-0254-7

Tomoe Nakayama, Tatsuyuki Ishibashi, Daihiko Eguchi, Kinya Yamada, Daisuke Tsurumaru, Katsumi Sakamoto, Hiromu Hidaka, Hidetaka Masuda

引用次数: 25