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World Journal of Gastroenterology 2005年第2期11卷 200-203页

作者： Xiao-HuaZheng Yong-SongGuan Xiang-PingZhou JuanHuang LongSun XiaoLi YuanLiu DepartmentofRadiology HuaxiHospitalSichuanUniversityChengdu610041SichuanProvinceChina

AIM: The purpose of this study was to compare the diagnostic accuracy of biphasic multi-detector row helical computed tomography (MDCT), digital subtraction angiography (DSA)and Lipiodol computed tomography (CT) in detection of hypervascular hepatocellular carcinoma (HCC).METHODS: Twenty-eight patients with nodular HCC underwent biphasic MDCT examination: hepatic arterial phase (HAP) 25 s and portal venous phase (PVP) 70 s after injection of the contrast medium (1.5 mL/kg). They also underwent hepatic angiography and intra-arterial infusion of iodized oil. Lipiodol CT was performed 3-4 wk after infusion. MDCT images were compared with DSA and Lipiodol CT images for detection of hepatic ***: The three imaging techniques had the same sensitivity in detecting nodules ＞20 mm in diameter. There was no significant difference in the sensitivity among HAP-MDCT, Lipiodol CT and DSA for nodules of 10-20 mm in diameter. For the nodules ＜10 mm in diameter, HAP-MDCT identified 47, Lipiodol CT detected 27 (X2= 11.3, P= 0.005＜0.01, HAP-MDCT vs Lipiodol CT) and DSA detected 16(X2= 9.09, P= 0.005＜0.01 vs Lipiodol CT and X2= 29.03,P = 0.005＜0.01 vs HAP-MDCT). However, six nodules ＜10 mm in diameter were detected only by Lipiodol ***: MDCT and Lipiodol CT are two complementary modalities. At present, MDCT does not obviate the need for DSA and subsequent Lipiodol CT as a preoperative examination for HCC.

关键词： Hypervascular hepatocellular carcinoma Multi-detector CT digital subtraction angiography Lipiodol CT

Use of digital subtraction angiography for assessment of digital replantation

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第3期13卷 209-212页

作者： Liu-hong WANG Guang-qiang ZHANG Department of Radiology the Second Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310009 China

Objective: To assess the blood flow of the proper digital artery using digital subtraction angiography (DSA) in the early stage after replantation. Methods: From January 2006 to October 2010, 27 anastomosed arteries in 27 replanted digits were included in the study. The patients included nine males and four females. The patients received DSA at 48 to 96 h after digital replantation. Based on DSA image, the blood flow was classified into normal, slow-running, and flow-stopping types. The patients with normal digital blood flow were given continuous routine treatments; the patients with slow-running flow were given the conservative treatments, such as release of the tight dressings, removal of stitches, keeping warm, the use of massage, and the use of anticoagulants and anti-inflammatory drugs; the patients with flow-stopping received immediate surgical re-exploration. Results: In this series, 23 digits in 11 patients showed a normal blood flow, and these digits all survived. In one of 13 patients, two digits which displayed slow-running flow also survived after conservative treatments. In two of 13 patients, two digits showed flow stopping, with one surviving and one failing after re-exploration and arterial revision. Conclusions: The DSA can be used to assess the blood flow of the proper digital artery in the early stage after replantation. It provides essential information for salvaging the replanted finger.

关键词： digital subtraction angiography Proper digital artery Replantation Blood flow

Interventional digital subtraction angiography for small bowel gastrointestinal stromal tumors with bleeding

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World Journal of Gastroenterology 2014年第47期20卷 17955-17961页

作者： Yao-Ting Chen Hong-Liang Sun Jiang-Hong Luo Jia-Yan Ni Dong Chen Xiong-Ying Jiang Jing-Xing Zhou Lin-Feng Xu Department of Interventional Radiology Sun Yat-sen Memorial HospitalSun Yat-sen University

AIM: To retrospectively evaluate the diagnostic efficacy of interventional digital subtraction angiography (DSA) for bleeding small bowel gastrointestinal stromal tumors (GISTs).

关键词： Gastrointestinal stromal tumors Small bowel digital subtraction angiography Interventional Embolization Bleeding

Duodenal ulcer caused by coil wiggle after digital subtraction angiography-guided embolization: A case report

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World Journal of Clinical Cases 2021年第33期9卷 10315-10322页

作者： Sheng Xu Shou-Xing Yang Zhan-Xiong Xue Chang-Long Xu Zhen-Zhai Cai Chang-Zhao Xu Department of Gastroenterology The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina

BACKGROUND Acute gastrointestinal bleeding(GIB)is a life-threatening medical emergency with high morbidity and *** embolization with endovascular coils under digital subtraction angiography guidance is a common and effective method for the treatment of GIB with high technical success *** ulcers caused by coils wiggled from the branch of the gastroduodenal artery,which is a rare complication,have not previously been reported in a patient with right intrathoracic *** SUMMARY A 62-year-old man had undergone thoracoscopy-assisted radical resection of esophageal cancer and gastroesophageal anastomosis 3 years ago,resulting in right intrathoracic *** was admitted to the hospital 15 mo ago for dizziness and suffered acute GIB during his *** surgery was urgently performed to embolize the branch of the gastroduodenal artery with endovascular *** 15 mo,the patient was re-admitted with a chief complaint of melena for 2 d,esophagogastroduodenoscopy and abdominal computed tomography revealed that some endovascular coils had migrated into the duodenal bulb,leading to a deep *** was controlled after conservative *** months later,duodenal balloon dilatation was performed to relieve the stenosis after the removal of a few coils,and the patient was safely discharged with only one coil retained in the duodenum due to difficulties in complete removal and risk of *** melena recurred once during the long-term *** Although rare,coil wiggle after interventional therapy requires careful attention,effective precautionary measures,and more secure alternative treatment methods.

关键词： digital subtraction angiography Endoscopy Esophageal neoplasms Gastrointestinal hemorrhage Duodenal ulcer Case report

Enhancing transjugular intrahepatic portosystemic shunt procedure efficiency with digital subtraction angiography image overlay technology in esophagogastric variceal bleeding

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World Journal of Gastrointestinal Surgery 2024年第9期16卷 2870-2877页

作者： Xiao-Yan Li Yao Li Wen-Qiang Li Shuai Ju Zhi-Hui Dong Jian-Jun Luo Vascular and Wound Center Jinshan HospitalFudan UniversityShanghai 201508China Department of Vascular Surgery Institute of Vascular SurgeryZhongshan Hospital Fudan UniversityShanghai 200032China Department of Interventional Radiology Zhongshan Hospital Fudan UniversityShanghai 20032China

BACKGROUND Transjugular intrahepatic portosystemic shunt(TIPS)is a pivotal intervention for managing esophagogastric variceal bleeding in patients with chronic hepatic *** To evaluate the efficacy of digital subtraction angiography image overlay tech-nology(DIT)in guiding the TIPS *** We conducted a retrospective analysis of patients who underwent TIPS at our hospital,comparing outcomes between an ultrasound-guided group and a DIT-guided *** analysis focused on the duration of the portosystemic shunt puncture,the number of punctures needed,the total surgical time,and various clinical indicators related to the *** The study included 52 patients with esophagogastric varices due to chronic hepatic *** demonstrated that the DIT-guided group expe-rienced significantly shorter puncture times(P<0.001)and surgical durations(P=0.022)compared to the ultrasound-guided ***,postoperative assessments showed significant reductions in aspartate aminotransferase,B-type natriuretic peptide,and portal vein pressure in both ***,the DIT-guided group also showed significant reductions in total bilirubin(P=0.001)and alanine aminotransferase(P=0.023).CONCLUSION The use of DIT for guiding TIPS procedures highlights its potential to enhance procedural efficiency and reduce surgical times in the treatment of esophagogastric variceal bleeding in patients with chronic hepatic schistoso-miasis.

关键词： Portal hypertension digital subtraction angiography Image overlay technology Hepatic artery labeling Transjugular intrahepatic portosystemic shunt

Modified magnetic resonance angiography of the liver using sensitivity encoding in comparison with digital subtraction angiography and CT arterial portography

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Hepatobiliary & Pancreatic Diseases International 2005年第2期4卷 185-191页

作者： Masahiko Fujii Hideaki Kawamitsu Kazuro Sugimura First Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310003 China Division of Ra diology Kobe Graduate School of Medicine Hyogo 6500017 Japan

BACKGROUND: Over 355 patients have received ortho- topic liver transplantation ( OLT) at this hospital since 1993. Preoperative imaging studies of both hepatic vessels and parenchyma in these recipients bettered surgical plan- ning or even precluded the necessity of surgery. Here we report our preliminary results of modified magnetic reso- nance angiography ( MRA ) using sensitivity encoding ( SENSE) through comparative study with conventional digital subtraction angiography (DSA) and CT arterial por- tography (CTAP). METHODS: Sixteen patients with suspected liver diseases were included in the study. All of them received both dy- namic MRI of the liver using SENSE and digital DSA with CTAP within a two-week interval. The four-phase MRA was reconstructed from source images of the coronal dy- namic study. The arterial phase of the modified MRA was compared with DSA in the evaluation of hepatic arteries and the portal phase compared with CT portography recon- structed from source images of CTAP. In dynamic study of the liver, a fixed dose (20 ml) of contrast medium and scan timing were used. RESULTS: The main branches and variations of the hepatic arterial system were well shown on the modified MRA, al- though the marginal branches of hepatic arteries were of poor quality. The figures of portal veins on MRA were as clear as or superior to those of CTAP. In addition, the su- prarenal inferior vena cava (IVC) was well demonstrated on MRA and/or non contrast-enhanced coronal balanced fast-field echo (b-FFE) scan sequence in most cases. MRI detected most parenchymal lesions of the liver and hemo- dynamics of these lesions could be evaluated on source ima- ges of the modified MRA. MRI/MRA also serendipitously revealed several extrahepatic disease entities or variations that were not found on DSA/CTAP. CONCLUSIONS: The modified MRA using SENSE is a cost-effective modality of examination for the demonstra- tion of the whole hepatic vascular system. Combined with MRI, it has t

关键词： orthotopic liver transplantation magnetic resonance imaging magnetic resonance angiography digital subtraction angiography

Classification and digital subtraction angiography evaluation of carotidcavernous fistulas

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Chinese Medical Journal 1999年第8期112卷 63-66页

作者：张子曙黄祥龙沈天真陈星荣 Department of Radiology 2nd Affiliated Hospital Hunan Medical University Changsha 410011 China Department of Radiology Huashan Hospital Shanghai Medical University Shanghai 200040 China

Objective To investigate the role of digital subtraction angiography (DSA) in evaluation of carotid cavernous fistulas, and to initiate a new classification for carotid cavernous fistula Methods Cerebral angiography and selective external and internal carotid angiography were carried out in 56 patients who were classified into 5 types according to their hemodynamic features Results The types were A (38 patients), B (4), C (10), D (2), and E (2) One of the 38 direct fistulas was located at C1 of the cavernous segment Fistulas at C2 were observed in 10 patients, at C3 in 4, at C4 in 10 and at C5 in 5 The anterior communicating arteries were patent and well compensated in 33 of the 56 patients The posterior communicating arteries were patent and well compensated in 39 patients Both communicating arteries were well compensated in 31 patients Fifty of the 56 patients were drained by ophthalmic veins, 47 by inferior petrous sinuses, 18 by cortical veins, and 8 to the posterior fossa region Conclusions digital subtraction angiography was helpful in localization of the rents in carotid cavernous fistulas, in evaluation of function of Willis circles and provided valuable information for treatment of carotid cavernous fistulas Carotid cavernous fistulas were divided into 5 categories: type A, B, C, D and E, among which type E was not previously described elsewhere

关键词： carotid cavernous fistula classification digital subtraction angiography

Carbon dioxide digital subtraction angiography manifestations of hepa-tocellular carcinoma

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Journal of Medical Colleges of PLA(China) 2002年第1期17卷 60-64页

作者：卢伟李彦豪何晓峰陈勇曾庆乐许小立 Department of Interventional Radiology Nanfang Hospital First Military Medical University Guangzhou 510515 China

Objective: To investigate the imaging features and clinical significance of carbon dioxide digital subtraction angiography (CO2-DSA) in the diagnosis and treatment of hepatocellular carcinoma (HCC). Methods: Both CO2-DSA and conventional DSA were performed in all 47 patients with HCC, and the angio-graphic manifestations of CO2-DSA were compared with those of conventional DSA in the same patients. Results: Peripheral arterial and capillary imaging by CO2-DSA was inferior to that by conventional DSA, although blood pools were well visualized with CO2. Improved visualization of arterioportal shunting (APS) was obtained with CO2-DSA compared with that by conventional angiography. APS was observed in 33 cases by CO2-DSA and in 12 cases by conventional angiography (P<0. 001). Retrograde visualization of the portal vein (PV) trunk and its large branches was demonstrated in 16 cases by CO2-DSA and in 1 case by conventional DSA (P<0. 001). The manifestation of lipiodol retention in the tumors was consistent with CO2-DSA images after TAE in 38 cases, and with those of conventional DSA in 23 cases (P<0. 01). Conclusion: CO2-DSA was superior to conventional DSA in the detection of APS and retrograde visualization of PV system, and the former can provide usefulness information for the treatment planning (chemoembolization) and patient prognosis. Demonstration of APS by CO2-DSA may suggest the presence of intrahepatic metastases.

关键词： carbon dioxide digital subtraction angiography hepatocellular carcinoma arterioportal shunting

Advancements and challenges in neuroimaging for the diagnosis of intracranial aneurysms:Addressing false positive diagnoses and emerging techniques

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World Journal of Clinical Cases 2025年第6期13卷 48-50页

作者： Nanthida Arora Sombat Muengtaweepongsa Center of Excellence in Stroke Thammasat UniversityPathum Thani 12120Thailand Center of Excellence in Stroke Division of NeurologyDepartment of MedicineFaculty of MedicineThammasat University Rangsit CampusKlonglaung 12120Pathum ThaniThailand

Despite advancements in neuroimaging,false positive diagnoses of intracranial aneurysms remain a significant *** article examines the causes,prevalence,and implications of such false-positive *** discuss how conditions like arterial occlusion with vascular stump formation and infundibular widening can mimic aneurysms,particularly in the anterior *** article compares various imaging modalities,including computer tomography angiogram,magnetic resonance imaging/angiography,and digital subtraction angiogram,highlighting their strengths and *** emphasize the im-portance of accurate differentiation to avoid unnecessary surgical *** potential of emerging technologies,such as high-resolution vessel wall ima-ging and deep neural networks for automated detection,is explored as promising avenues for improving diagnostic *** manuscript underscores the need for continued research and clinical vigilance in the diagnosis of intracranial aneurysms.

关键词： Intracranial aneurysms Neuroimaging techniques Computed tomographic angiography Magnetic resonance angiography digital subtraction angiography False positive diagnoses

Manifestations of hepatic cavernous hemangioma in carbon dioxidedigi-tal subtraction angiography

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Journal of Medical Colleges of PLA(China) 2002年第2期17卷 134-138页

作者：卢伟李彦豪何晓峰陈勇曾庆乐 Department of Interventional Radiology Nan fang Hospital First Military Medical University Guangzhou 510515 China

Objective: To describe the characteristic appearance of cavernous hemangioma of the liver (CHL) presented in carbon dioxide digital subtraction angiography (CO2-DSA) and to evaluate the significance of CO2-DSA in the diagnosis of CHL. Methods: Both CO2-DSA and iodinated contrast DSA (IC-DSA) were performed in all 16 patients with CHL, and the angiographic manifestations in the same patients were compared. The image quality was rated by three experienced angiographers, and the complications were also assessed. Results: There was good correlation between angiographers on image quality (R = 0. 73). Diagnostic images were obtained with both CO2-DSA and IC-DSA in all CHL patients. No difference was noted between IC-DSA and CO2-DSA in visualizing the proper hepatic arteries and its branches (P>0. 05). CO2-DSA produced better images that clearly described the tumor size, shape and margination than those by IC-DSA (P< 0. 05), but both demonstrated characteristic appearances of early opacification and persistent contrast enhancement of the tumors. The portal vein branches near the tumors were constantly demonstrated by CO2-DSA in 15 cases (15/16) but only in 2 cases (2/16) by IC-DSA. Conclusion: CO2-DSA is sensitive in CHL diagnosis, and in patients with contraindications to IC or with unsatisfactory imaging results by IC-DSA, CO2-DSA is a good alternative. As show in most cases by CO2-DSA, the portal veins might act as the main drainage vein of CHLs.

关键词： carbon dioxide digital subtraction angiography cavernous hemangioma liver