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| 1 | 支气管的动脉和气管的分叉的大动脉的 ostia : MDCT 分析显示文摘 AIM:To explore the anatomical relationships between bronchial artery and tracheal bifurcation using computed tomography angiography (CTA).METHODS:One hundred consecutive patients (84 men,16 women;aged 46-85 years) who underwent CTA using multi-detector row CT (MDCT) were investigated retrospectively.The distance between sites of bronchial artery ostia and tracheal bifurcation,and dividing directions were explored.The directions of division from the descending aorta were described as on a clock face.RESULTS:We identified ostia of 198 bronchial arteries:95 right bronchial arteries,67 left bronchial arteries,36 common trunk arteries.Of these,172 (87%) divided from the descending aorta,25 (13%) from the aortic arch,and 1 (0.5%) from the left subclavian artery.The right,left,and common trunk bronchial arteries divided at-1 to 2 cm from tracheal bifurcation with frequencies of 77% (73/95),82% (54/66),and 70% (25/36),respectively.The dividing direction of right bronchial arteries from the descending aorta was 9 to 10 o’clock with a frequency of 81% (64/79);that of left and common tract bronchial arteries was 11 to 1 o’clock with frequencies of 70% (43/62) and 77% (24/31),respectively.CONCLUSION:CTA using MDCT provides details of the relation between bronchial artery ostia and tracheal bifurcation. | Julaiti Ziyawudong Nobuyuki Kawai Morio Sato Akira Ikoma Hiroki Sanda Taizo Takeuchi Hiroki Minamiguchi Motoki Nakai Takami Tanaka Tetsuo Sonomura | 2012 | World Journal of Radiology2012，4，1： | 9 |
| 2 | 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 |
| 3 | 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 |
| 4 | Preoperative microcoil embolization of the common hepatic artery for pancreatic body cancer显示文摘AIM:To evaluate safety and feasibility of microcoil embolization of the common hepatic artery under proper or distal balloon inflation in preoperative preparation for en bloc celiac axis resection for pancreatic body cancer.METHODS:Fifteen patients(11 males,4 females;median age,67 years) with pancreatic body cancer involving the nerve plexus surrounding the celiac artery underwent microcoil embolization.To alter the total hepatic blood flow from superior mesenteric artery(SMA),microcoil embolization of the common hepatic artery(CHA) was conducted in 2 cases under balloon inflation at the proximal end of the CHA and in 13 cases under distal microballoon inflation at the distal end of the CHA.RESULTS:Of the first two cases of microcoil embolization with proximal balloon inflation,the first was successful,but there was microcoil migration to the proper hepatic artery in the second.The migrated microcoil was withdrawn to the CHA by an inflated microballoon catheter.Microcoil embolization was successful in the other 13 cases with distal microballoon inflation,with no microcoil migration.Compact microcoil embolization under distal microballoon inflation created sufficient resistance against the vascular wall to prevent migration.Distal balloon inflation achieved the requisite 1 cm patency at the CHA end for vascular clamping.All patients underwent en bloc celiac axis resection without arterial reconstruction or liver ischemia.CONCLUSION:To impede microcoil migration to the proper hepatic artery during CHA microcoil embolization,distal microballoon inflation is preferable to proximal balloon inflation. | Isao Takasaka Nobuyuki Kawai Morio Sato Hirohiko Tanihata Tetsuo Sonomura Hiroki Minamiguchi Motoki Nakai Akira Ikoma Kouhei Nakata Hiroki Sanda | 2012 | World Journal of Gastroenterology2012，18，16： | 1 |
| 5 | 有为提高的超声可见性的特定的修正的脉管的刺针的评估: 在 vitro 学习显示文摘 AIM:To determine which modification to a vascular puncture needle results in increased visualization during ultrasound(US)-guided vascular puncture.METHODS:We evaluated US images of a phantom made of degassed gelatin and each of the following four modified versions of a commercially available vascular puncture needle(18 G):re-cut needle,dimple needle,rough-surface needle(rough over the sections of needle located 3-6 mm from the tip),and a needle with four side holes(side holes covered by the sheath).An unmodified commercially available puncture needle was used as a control.Five interventional radiologists evaluated image quality according to the following classification grade:Ⅰ,invisible;Ⅱ,poor;Ⅲ,moderate;Ⅳ,good;Ⅴ,excellent.RESULTS:The highest score for needle visualization was obtained for the needle with four side holes.The re-cut needle scored the same as the control.Multiple comparisons were conducted using overall evaluation scores among the commercially available needle,dimple needle,rough-surface needle(3-6 mm),and the needle with four side holes.A significantly higher score was obtained for the needle with four side holes(P < 0.05/6).CONCLUSION:The needle with four side holes was prominently visualized and gained a significantly higher score(compared with the other needles) in a phantom evaluation. | Nobuyuki Kawai Hiroki Minamiguchi Morio Sato Motoki Nakai Hiroki Sanda Takami Tanaka Akira Ikoma Kouhei Nakata Shintaro Shirai Tetsuo Sonomura | 2012 | World Journal of Radiology2012，4，6： | 1 |
| 6 | 与卷收拾行李和 stent 放置治疗的劣等的 pancreaticoduodenal 动脉动脉瘤显示文摘 Two cases with a pancreaticoduodenal arterial aneurysm accompanied with superior mesenteric artery(SMA) stenosis were previously described and both were treated surgically.However,for interventional treatment,securing a sufficient blood supply to the SMA should be a priority of treatment.We present the case of a 71-year-old male with a 20 mm diameter pancreaticoduodenal arterial aneurysm accompanied by SMA stenosis at its origin.The guidewire traverse from SMA to the aneurysm was difficult because of the tight SMA stenosis;however,the guidewire traverse from the celiac artery was finally successful and was followed by balloon angioplasty using a pull-through technique,leading to stent placement.Thereafter,coil packing through the SMA achieved eradication of the aneurysm without bowel ischemia.At the last follow-up computed tomography 8 mo later,no recurrence of the aneurysm was confirmed.The pull-through technique was useful for angioplasty for tight SMA stenosis in this case. | Akira Ikoma Motoki Nakai Morio Sato Nobuyuki Kawai Takami Tanaka Hiroki Sanda Kouhei Nakata Hiroki Minamiguchi Tetsuo Sonomura | 2012 | World Journal of Radiology2012，4，8： | 0 |
| 7 | Safety of bronchial arterial embolization with n-butyl cyanoacrylate in a swine model显示文摘AIM: To compare the efficacy and safety of bronchial artery embolization (BAE) with n-butyl cyanoacrylate (NBCA) and gelatin sponge particles (GSPs). METHODS: Six healthy female swine were divided into two groups to be treated with BAE using NBCA-lipiodol (NBCA-Lp) and using GSPs. The occlusive durability, the presence of embolic materials, the response of the vessel wall, and damage to the bronchial wall and pulmonary parenchyma were compared. RESULTS: No animals experienced any major complication. Two days later, no recanalization of the bronchial artery was observed in the NBCA-Lp group, while partial recanalization was seen in the GSP group. Embolic materials were not found in the pulmonary artery or pulmonary vein. NBCA-Lp was present as a bubble-like space in bronchial branch arteries of 127-1240 μm, and GSPs as reticular amorphous substance of 107-853 μm. These arteries were in the adventitia outside the bronchial cartilage but not in the fine vessels inside the bronchial cartilage. No damage to the bronchial wall and pulmonary parenchyma was found in either group. Red cell thrombus, stripping of endothelial cells, and infiltration of inflammatory cells was observed in vessels embolized with NBCA-Lp or GSP. CONCLUSION: NBCA embolization is more potent than GSP with regard to bronchial artery occlusion, and both materials were present in bronchial branch arteries≥100 μm diameter. | Takami Tanaka Nobuyuki Kawai Morio Sato Akira Ikoma Kouhei Nakata Hiroki Sanda Hiroki Minamiguchi Motoki Nakai Tetsuo Sonomura Ichiro Mori | 2012 | World Journal of Radiology2012，4，12： | 0 |
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