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| 1 | Transhepatic catheter-directed thrombolysis for portal vein thrombosis after partial splenic embolization in combination with balloon-occluded retrograde transvenous obliteration of splenorenal shunt显示文摘一个 66 岁的女人与自发的门静脉高血压(IPH ) 为脾机能亢进经历了部分脾的 embolization (PSE ) 。一个星期以后,提高对比的 CT 揭示了广泛的门静脉血栓(PVT ) 并且扩大了 portosystemic 分流。PVT 没被尿激的静脉内的管理溶解。正确的门静脉是经由在超声的指导和 4 Fr 下面的经皮的 transhepatic 线路的 canulated。直导管通过血栓被推进进门静脉。Transhepatic 指导导管的血栓溶解被执行溶解 PVT, splenorenal 分流并发地被堵塞增加门血流,用堵塞汽球后退 transvenous 涂去(BRTO ) 技术。随后的提高对比的 CT 显示出门静脉和形成血栓 splenorenal 分流的好明显。与 BRTO 相结合的 Transhepatic 指导导管的血栓溶解为有 portosystemic 分流的 PVT 可行、有效。 | Motoki Nakai Morio Sato Shinya Sahara Nobuyuki Kawai Masashi Kimura Yoshimasa Maeda Yumiko Ibata Katsuhiko Higashi | 2006 | World Journal of Gastroenterology2006，12，31： | 8 |
| 2 | Ruptured high flow gastric varices with an intratumoral arterioportal shunt treated with balloon-occluded retrograde transvenous obliteration during temporary balloon occlusion of a hepatic artery显示文摘A patient presented with hematemesis due to gastric variceal bleeding with an intratumoral arterioportal shunt. Contrast-enhanced CT revealed gastric varices and hepatocellular carcinoma with tumor thrombi in the right portal vein. Angiography and angio-CT revealed a marked intratumoral arterioportal shunt accompanied with re? ux into the main portal vein and gastric varices. Balloon-occluded retrograde venography from the gastro-renal shunt showed no visualization of gastric varices due to rapid blood flow through the intratumoral arterioportal shunt. The hepatic artery was temporarily occluded with a balloon catheter to reduce the blood ? ow through the arterioportal shunt, and then concurrent balloon-occluded retrograde transvenous obliteration (BRTO) was achieved. Vital signs stabilized immediately thereafter, and contrast-enhanced CT revealed thrombosed gastric varices. Worsening of hepatic function was not recognized. BRTO combined with temporary occlusion of the hepatic artery is a feasible interventional procedure for ruptured high ? ow gastric varices with an intratumoral arterioportal shunt. | Motoki Nakai Morio Sato Hirohiko Tanihata Tetsuo Sonomura Shinya Sahara Nobuyuki Kawai Masashi Kimura Masaki Terada | 2006 | World Journal of Gastroenterology2006，12，33： | 8 |
| 3 | Reactive lymphoid hyperplasia of the liver:Perinodular enhancement on contrast-enhanced computed tomography and magnetic resonance imaging显示文摘We report the case of a 69-year-old woman with reactive lymphoid hyperplasia(RLH) of the liver.She underwent partial hepatectomy under a preoperative diagnosis of hepatocellular carcinoma; however,histopathological analysis revealed RLH.The liver nodule showed the imaging feature of perinodular enhancement in the arterial dominant phase on contrast-enhanced computed tomography and magnetic resonance imaging,which could be a useful clue for identifying RLH in the liver.Histologically,the perinodular enhancement was compatible with prominent sinusoidal dilatation surrounding the liver nodule. | Tetsuo Sonomura Shinpei Anami Taizo Takeuchi Motoki Nakai Shinya Sahara Hirohiko Tanihata Kazuki Sakamoto Morio Sato | 2015 | World Journal of Gastroenterology2015，21，21： | 7 |
| 4 | Three benefits of microcatheters for retrograde transvenous obliteration of gastric varices显示文摘AIM:To evaluate the usefulness of the microcatheter techniques in balloon-occluded retrograde transvenous obliteration (BRTO) of gastric varices.METHODS:Fifty-six patients with gastric varices underwent BRTOs using microcatheters.A balloon catheter was inserted into gastrorenal or gastrocaval shunts.A microcatheter was navigated close to the varices,and sclerosant was injected into the varices through the microcatheter during balloon occlusion.The next morning,thrombosis of the varices was evaluated by contrast enhanced computed tomography (CE-CT).In patients with incomplete thrombosis of the varices,a second BRTO was performed the following day.Patients were followed up with CE-CT and endoscopy.RESULTS:In all 56 patients,sclerosant was selectively injected through the microcatheter close to the varices.In 9 patients,microcoil embolization of collateral veinswas performed using a microcatheter.In 12 patients with incomplete thrombosis of the varices,additional injection of sclerosant was performed through the microcatheter that remained inserted overnight.Complete thrombosis of the varices was achieved in 51 of 56 patients,and the remaining 5 patients showed incomplete thrombosis of the varices.No recurrence of the varices was found in the successful 51 patients after a median follow up time of 10.5 mo.We experienced one case of liver necrosis,and the other complications were transient.CONCLUSION:The microcatheter techniques are very effective methods for achieving a higher success rate of BRTO procedures. | Tetsuo Sonomura Wataru Ono Morio Sato Shinya Sahara Kouhei Nakata Hiroki Sanda Nobuyuki Kawai Hiroki Minamiguchi Motoki Nakai Kazushi Kishi | 2012 | World Journal of Gastroenterology2012，18，12： | 5 |
| 5 | Radiofrequency ablation in a porcine liver model:Effects of transcatheter arterial embolization with iodized oil on ablation time,maximum output,and coagulation diameter as well as angiographic characteristics显示文摘AIM:To evaluate the effects of combined radiofrequen-cy ablation and transcatheter arterial embolization with iodized oil on ablation time,maximum output,coagula-tion diameter,and portal angiography in a porcine liver model. METHODS: Radiofrequency ablation (RFA) was applied to in vivo livers of 10 normal pigs using a 17-gauge 3.0 cm expandable LeVeen RF needle electrode with or with-out transcatheter arterial embolization (TAE) with iodized oil (n = 5). In each animal,2 areas in the liver were ab-lated. Direct portography was performed before and af-ter RFA. Ablation was initiated at an output of 30 W,and continued with an increase of 10 W per minute until roll-off occurred. Ablation time and maximum output until roll-off,and coagulated tissue diameter were compared between the 2 groups. Angiographic changes on portog-raphy before and after ablation were also reviewed. RESULTS: For groups with and without TAE with iodized oil,the ablation times until roll-off were 320.6 ± 30.9 seconds and 445.1 ± 35.9 seconds,respectively,maxi-mum outputs were 69.0 ± 7.38 W and 87.0 ± 4.83 W and maximal diameters of coagulation were 41.7 ± 3.85 mm and 33.2 ± 2.28 mm. Significant reductions of abla-tion time and maximum output,and significantly larger coagulation diameter were obtained with RFA following TAE with iodized oil compared to RFA alone. Portography after RFA following TAE with iodized oil revealed more occlusion of the larger portal branches than with RFA alone. CONCLUSION: RFA following TAE with iodized oil can increase the volume of coagulation necrosis with lower output and shorter ablation time than RFA alone in nor-mal pig liver tissue. | Motoki Nakai Morio Sato Shinya Sahara Nobuyuki Kawai Hirohiko Tanihata Masashi Kimura Masaki Terada | 2007 | World Journal of Gastroenterology2007，13，20： | 4 |
| 6 | 堵塞汽球后退为经由脊间的静脉的胃的静脉曲张的 transvenous 涂去显示文摘 Gastric varices are usually associated with a gastrorenal(G-R) shunt.However,the gastric varices described in this case report were not associated with a G-R shunt.The inflow vessel was the posterior gastric vein and the outflow vessels were the narrow inferior phrenic vein and the dilated cardio-phrenic vein.First,percutaneous transhepatic obliteration of the posterior gastric vein was performed,but the gastric varices remained patent.Then,micro-balloon catheterization of the subphrenic vein was carried out via the jugular vein,pericardial vein and cardio-phrenic vein,however,micro-balloon-occluded inferior phrenic venography followed by micro-coil embolization of the cardio-phrenic vein revealed no delineation of gastric varices resulting in no further treatment.Thereafter,as a gastrosubphrenic-intercostal vein shunt developed,a microballoon catheter was advanced to the gastric varices via the intercostal vein and balloon-occluded retrograde transvenous obliteration(BRTO) was performed resulting in the eradication of gastric varices.BRTO for gastric varices via the intercostal vein has not previously been documented. | Hiroki Minamiguchi Nobuyuki Kawai Morio Sato Akira Ikoma Munehisa Sawa Tetsuo Sonomura Shinya Sahara Kouhei Nakata Isao Takasaka Motoki Nakai | 2012 | World Journal of Radiology2012，4，3： | 3 |
| 7 | Emergency balloon-occluded retrograde transvenous obliteration of ruptured gastric varices显示文摘AIM: To evaluate the effectiveness and safety of emergency balloon-occluded retrograde transvenous obliteration(BRTO) for ruptured gastric varices.METHODS: Emergency BRTO was performed in 17 patients with gastric varices and gastrorenal or gastrocaval shunts within 24 h of hematemesis and/or tarry stool.The gastric varices were confirmed by endoscopy,and the gastrorenal or gastrocaval shunts were identified by contrast-enhanced computed tomography(CE-CT).A 6-Fr balloon catheter(Cobra type) was inserted into the gastrorenal shunt via the right internal jugular vein,or into the gastrocaval shunt via the right femoral vein,depending on the varices drainage route.The sclerosant,5% ethanolamine oleate iopamidol,was injected into the gastric varices through the catheter during balloon occlusion.In patients with incom plete thrombosis of the varices after the first BRTO,a second BRTO was performed the following day.Patients were followed up by endoscopy and CE-CT at 1 d,1 wk,and 1,3 and 6 mo after the procedure,and every 6 mo thereafter.RESULTS: Complete thrombosis of the gastric varices was not achieved with the first BRTO in 7/17 patients because of large gastric varices.These patients underwent a second BRTO on the next day,and additional sclerosant was injected through the catheter.Complete thrombosis which led to disappearance of the varices was achieved in 16/17 patients,while the remaining patient had incomplete thrombosis of the varices.None of the patients experienced rebleeding or recurrence of the gastric varices after a median follow-up of 1130 d(range 8-2739 d).No major complications occurred after the procedure.However,esophageal varices worsened in 5/17 patients after a mean follow-up of 8.6 mo.CONCLUSION: Emergency BRTO is an effective and safe treatment for ruptured gastric varices. | Tetsuo Sonomura Wataru Ono Morio Sato Shinya Sahara Kouhei Nakata Hiroki Sanda Nobuyuki Kawai Hiroki Minamiguchi Motoki Nakai Kazushi Kishi | 2013 | World Journal of Gastroenterology2013，19，31： | 2 |
| 8 | Triple-phase computed tomography during arterial portography with bolus tracking for hepatic tumors显示文摘 | Motoki Nakai Morio Sato Akira Ikoma Kohei Nakata Shinya Sahara Isao Takasaka Hiroki Minamiguchi Nobuyuki Kawai Tetsuro Sonomura Kazushi Kishi | 2010 | Japanese Journal of Radiology2010，，2： | 1 |
| 9 | Radiofrequency Ablation Assisted by Real-Time Virtual Sonography and CT for Hepatocellular Carcinoma Undetectable by Conventional Sonography显示文摘 | Motoki Nakai Morio Sato Shinya Sahara Isao Takasaka Nobuyuki Kawai Hiroki Minamiguchi Hirohiko Tanihata Masashi Kimura Nozomu Takeuchi | 2009 | CardioVascular and Interventional Radiology2009，，1： | 1 |
| 10 | Radiofrequency Ablation Assisted by Real-Time Virtual Sonography and CT for Hepatocellular Carcinoma Undetectable by Conventional Sonography显示文摘 | Motoki Nakai Morio Sato Shinya Sahara Isao Takasaka Nobuyuki Kawai Hiroki Minamiguchi Hirohiko Tanihata Masashi Kimura Nozomu Takeuchi | 2009 | CardioVascular and Interventional Radiology2009，，1： | 1 |
| 11 | Changes in Portal Systemic Pressure Gradient After Balloon-Occluded Retrograde Transvenous Obliteration of Gastric Varices and Aggravation of Esophageal Varices显示文摘 | Hirohiko Tanihata Hiroki Minamiguchi Morio Sato Nobuyuki Kawai Tetsuo Sonomura Isao Takasaka Motoki Nakai Shinya Sahara Kohei Nakata Shintaro Shirai | 2009 | CardioVascular and Interventional Radiology2009，，6： | 1 |
| 12 | Changes in Portal Systemic Pressure Gradient After Balloon-Occluded Retrograde Transvenous Obliteration of Gastric Varices and Aggravation of Esophageal Varices显示文摘 | Hirohiko Tanihata Hiroki Minamiguchi Morio Sato Nobuyuki Kawai Tetsuo Sonomura Isao Takasaka Motoki Nakai Shinya Sahara Kohei Nakata Shintaro Shirai | 2009 | CardioVascular and Interventional Radiology2009，，6： | 1 |
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