{"title":"Venous Rupture Following Transcatheter Arterial Embolization for Inferior Mesenteric Type II Arteriovenous Malformation.","authors":"Kazuki Hirota, Shuji Kariya, Yutaka Ueno, Miyuki Nakatani, Yasuyuki Ono, Takuji Maruyama, Atsushi Komemushi, Mitsunobu Uda, Shinsuke Nishimura, Noboru Tanigawa","doi":"10.22575/interventionalradiology.2021-0028","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0028","url":null,"abstract":"<p><p>We treated a 64-year-old man who had an inferior mesenteric arteriovenous malformation with multiple shunts. As multiple varicosities in the draining vein became enlarged, two dilated shunts on the superior rectal and sigmoid colon arteries were coil embolized. Two days after embolization, a varicosity near the shunt (65 mm diameter) ruptured, causing intra-abdominal hemorrhage and surgical hemostasis. There were thrombi in the ruptured varicosity and its draining vein. The likely cause was a pressure increase in the incompletely thrombosed varicosity due to shunt blood flow from the remaining shunts after embolization.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"81-84"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b9/7a/2432-0935-7-2-0081.PMC9527099.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33488980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dosimetry of Occupational Eye Lens Dose Using a Novel Direct Eye Dosimeter, DOSIRIS, during Interventional Radiology Procedures.","authors":"Masakazu Hirakawa, Hiroshi Nakatake, Satoru Tsuruta, Shuji Matsuura, Yuushi Motomura, Yoshiki Hiraki, Koshi Mimori, Kousei Ishigami","doi":"10.22575/interventionalradiology.2022-0005","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2022-0005","url":null,"abstract":"<p><p>In response to the recommendation by the International Commission on Radiological Protection to lower the equivalent eye dose limit, the Japanese Government in April 2021 lowered the equivalent dose limit for the eye lens for occupational exposure. A considerable number of interventional radiology operators are exposed to levels above the new limit. For this reason, a need exists to more accurately evaluate eye lens dose in interventional radiology operators by using a novel direct eye dosimeter, the DOSIRIS™(IRSN, France), which is capable of measuring a 3-mm dose equivalent under protective glasses. The DOSIRIS is a thermoluminescent dosimeter that exhibits good energy dependence and better directional properties than other dosimeters. Dosimetry using DOSIRIS might be accurate and compatible with the latest regulations.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"40-43"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fa/2e/2432-0935-7-2-0040.PMC9527102.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33487963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Practical Radiation Protection for Interventional Radiologist.","authors":"Atsushi Komemushi, Shogo Takashima, Atsushi Nagai, Masakatsu Usui, Masahiro Fukuda, Miyuki Nakatani, Yasuyuki Ono, Takuji Maruyama, Shuji Kariya, Keita Utsunomiya, Noboru Tanigawa","doi":"10.22575/interventionalradiology.2022-0004","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2022-0004","url":null,"abstract":"<p><p>As per the International Commission on Radiological Protection 2010 recommendation, it was stated that \"interventional radiologists performing difficult procedures with high workloads may be exposed to high doses\" and that education and training of medical staffs in radiation exposure is \"an urgent priority.\" There are many reports on the textbook aspects of radiation protection, but reports on the practical aspects of radiation protection have remained to be scarce. Various methods of reducing radiation exposure are described as \"useful\" or \"can be reduced,\" but the priority of these methods and the \"extent\" to which they contribute to reducing radiation exposure are not clear. Thus, in this article, we will look into the protection of interventional radiologist from radiation exposure in a practical way, giving priority to clarity rather than academic accuracy.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"54-57"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/80/35/2432-0935-7-2-0054.PMC9527100.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33487961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Combined Transhepatic and Transsplenic Recanalization of Chronic Portal Vein Occlusion to Treat Jejunal Varices: A Report of Two Cases.","authors":"Shuto Miyamura, Hideki Ishimaru, Taiga Oka, Tetsuhiro Otsuka, Satomi Yoshimi, Masaaki Hidaka, Yuri Miyazoe, Masataka Uetani","doi":"10.22575/interventionalradiology.2021-0022","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0022","url":null,"abstract":"<p><p>We report two cases of chronic portal vein occlusion with jejunal varices successfully treated using percutaneous intervention with a combined transhepatic and transsplenic approach. Case 1 was a 60-year-old man with uncontrolled jejunal variceal bleeding, and case 2 was a 79-year-old man with anastomotic jejunal variceal bleeding and cholangitis. Single access via the transhepatic or transsplenic route failed to allow catheter advancement through the occlusion. After introducing pull-through access via the transhepatic and transsplenic routes, a metallic stent was could be used to dilate the occluded portal vein. Anastomotic jejunal varices functioning as hepatopetal collaterals were embolized after the establishment of antegrade portal flow. No symptom relapse was observed during the follow-up period (31 months for case 1 and 34 months for case 2).</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"63-68"},"PeriodicalIF":0.0,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8a/91/2432-0935-7-2-0063.PMC9527106.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33487960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effort for Radiation Protection Increases the Value of Interventional Radiology.","authors":"Toshi Abe","doi":"10.22575/interventionalradiology.2022-0002","DOIUrl":"10.22575/interventionalradiology.2022-0002","url":null,"abstract":"<p><p>Radiation protection is one of the most essential efforts for radiologists. The newest update of medical radiation protection in Japan focused on the field of interventional radiology. In this situation, it is required to choose for interventional radiologists to participate in it reluctantly or proactively. To enhance the value of interventional radiology in society, our effort of commitment to learning, collaborating, and assuming our awesome responsibility is requested. We will contribute to the safety of medical facilities and society.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"37-39"},"PeriodicalIF":0.0,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fa/c3/2432-0935-7-2-0037.PMC9527107.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33488978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Radiation Exposure and Protection in Computed Tomography Fluoroscopy.","authors":"Miyuki Nakatani, Shuji Kariya, Yasuyuki Ono, Takuji Maruyama, Yutaka Ueno, Atsushi Komemushi, Noboru Tanigawa","doi":"10.22575/interventionalradiology.2022-0010","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2022-0010","url":null,"abstract":"<p><p>Computed tomography (CT) fluoroscopy-guided procedures, such as those used for percutaneous biopsy, drainage, and radiofrequency ablation, are highly safe and quite often very successful due to the precision offered by the real-time, high-resolution tomographic images. Even so, international guidelines raised concerns regarding operator exposure to high doses of radiation during these procedures. In light of these concerns, operators conducting CT fluoroscopy-guided procedures not only need to be cognizant of the exposure risk but also exhibit sufficient knowledge of radiation protection. This paper reviews the current literature on experimental and clinical studies of radiation exposure doses to operators during CT fluoroscopy-guided procedures. In addition to the literature review, this paper also introduces different approaches that can be implemented to ensure appropriate radiation protection.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"49-53"},"PeriodicalIF":0.0,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/be/b0/2432-0935-7-2-0049.PMC9527104.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33488981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Successful Treatment of Subcapsular Hepatic Hemorrhage Concomitant with Diffuse Arterioportal Shunt by Transcatheter Arterial Embolization.","authors":"Emiko Chiba, Kohei Hamamoto, Maya Oishi, Hironao Yuzawa, Noriko Oyama-Manabe, Hiroshi Shinmoto","doi":"10.22575/interventionalradiology.2021-0029","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0029","url":null,"abstract":"<p><p>We present a case of subcapsular hepatic hemorrhage with a concomitant diffuse arterioportal shunt successfully treated with transcatheter arterial embolization. An 85-year-old man with duodenal carcinoma developed hemorrhagic shock three days after pancreaticoduodenectomy. Contrast-enhanced computed tomography revealed an extensive subcapsular hepatic hematoma with extravasation. At the same time, diagnostic angiography showed innumerable foci of petechial extravasation from disrupted isolated arteries and the right inferior phrenic artery. In addition, a comorbid diffuse arterioportal shunt in the hematoma area was detected. We performed transcatheter arterial embolization on the peripheral side of the hepatic artery while preserving the proximal portion. Subsequently, the transcatheter arterial embolization for the right inferior phrenic artery was also performed. Complete hemostasis and occlusion of the arterioportal shunt were successful without fulminant liver failure.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"69-74"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/52/eb/2432-0935-7-2-0069.PMC9527108.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33487964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Percutaneous Transsplenic Embolization of Gastric Varices in Left-sided Portal Hypertension.","authors":"Yuki Tanaka, Shuji Kariya, Miyuki Nakatani, Yutaka Ueno, Yasuyuki Ono, Takuji Maruyama, Atsushi Komemushi, Noboru Tanigawa","doi":"10.22575/interventionalradiology.2021-0019","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0019","url":null,"abstract":"<p><p>An 81-year-old man with previously diagnosed cancer of the pancreatic body presented with melena and anemia. Upper gastrointestinal endoscopy showed gastric varices with bleeding in the entire stomach. Contrast-enhanced computed tomography identified a splenic vein occlusion resulting from invasion by the pancreatic body cancer and dilated collateral pathways from the splenic hilum to the gastric fundus. The patient was diagnosed with gastric varices associated with left-sided portal hypertension caused by obstruction of the splenic vein and underwent percutaneous transsplenic embolization with <i>n</i>-butyl-2-cyanoacrylate mixed with lipiodol. Splenic subcapsular hematoma occurred and was treated conservatively. The patient died of advanced cancer 5 months after the procedure, without experiencing rebleeding. Percutaneous transsplenic embolization was effective in treating gastric variceal bleeding caused by left-sided portal hypertension.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 2","pages":"58-62"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/83/71/2432-0935-7-2-0058.PMC9527103.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33488982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Case of Percutaneous Transesophageal Jejunostomy after Subtotal Esophagectomy.","authors":"Takuji Maruyama, Shuji Kariya, Miyuki Nakatani, Yasuyuki Ono, Yutaka Ueno, Atsushi Komemushi, Noboru Tanigawa","doi":"10.22575/interventionalradiology.2021-0024","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0024","url":null,"abstract":"<p><p>An 80-year-old woman who underwent subtotal esophagectomy with gastric tube reconstruction for esophageal cancer developed carcinoma of the left upper gingiva. The local recurrence of the gingival carcinoma resulted in trismus and prevented oral intake. Then she underwent a percutaneous transesophageal jejunostomy tube placement in the preserved cervical esophagus. Enteral feeding continued for three months with no complications until oral intake was possible. A percutaneous transesophageal jejunostomy is possible using the postoperatively preserved cervical esophagus.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 1","pages":"34-36"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ad/48/2432-0935-7-1-0034.PMC9327427.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40573894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transrenal Ureter Embolization for Refractory Urine Leaks from Iatrogenic Ureteric Injury Following Colorectal Surgery.","authors":"Koki Kato, Syunkichi Sasazawa, Takashi Hazama, Kei Ishimura, Keiichi Tanimura, Hiroharu Shinozaki, Ryou Tsukamoto, Toyofusa Tobe","doi":"10.22575/interventionalradiology.2021-0016","DOIUrl":"https://doi.org/10.22575/interventionalradiology.2021-0016","url":null,"abstract":"<p><p>We present the cases of two patients who underwent ureteral occlusion using coils and/or Amplatzer Vascular Plug with N-butyl cyanoacrylate glue after extensive advanced rectal surgery. Both patients had complex urine leaks unresponsive to urinary diversion. In view of the progress of the disease and the history of polysurgery, reconstructive surgery or anterograde ureteral stent insertion was not chosen. All patients had immediate resolution of urinary leakage after ureteral embolization, resulting in symptom relief throughout the follow-up period. There were no procedure-related complications or side effects.</p>","PeriodicalId":73503,"journal":{"name":"Interventional radiology (Higashimatsuyama-shi (Japan)","volume":"7 1","pages":"21-25"},"PeriodicalIF":0.0,"publicationDate":"2022-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c2/d0/2432-0935-7-1-0021.PMC9327325.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40573893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}