"Cerebral angiography"

Hemodynamic evaluation of symptomatic and asymptomatic intracranial atherosclerotic stenosis using cerebral angiographic images: an exploratory study. Previous studies suggest that it may be inappropriate to determine treatment strategies solely based on the degree of stenosis for patients with intracranial atherosclerotic stenosis (ICAS). In order to better risk stratify patients with ICAS, we cerebral angiography were recruited. According to the time of onset, the patients were divided into a symptomatic ICAS group (n=78) and an asymptomatic ICAS group (n=46). The Angio-FF of each group was collected and compared. Receiver-operating characteristic curve (ROC) analysis was performed to assess the discriminative ability of Angio-FF to predict hemodynamics for ICAS. Compared

Transradial cerebral angiography in the neonate and infant: a case series. We aim to share our experience of transradial access (TRA) for cerebral angiography and intervention in five patients ranging from 6 days to 7 months of age. In this institutional review board-approved, retrospective case series, we reviewed all patients who underwent TRA for cerebral angiography with and without )) underwent TRA for cerebral angiography. Four patients underwent diagnostic cerebral angiography, two via left TRA and two via right TRA. One patient was definitively treated with endovascular embolization for an arteriovenous fistula. Median procedural length was 1.5 hours (range 1-2.2 hours) and median effective skin dose was 88.7 mGy (range 48.8-140.3 mGy). No procedures required conversion to femoral

Transradial cerebral angiography: predicting left ICA selective angiography success using pre-diagnostic aortic arch factors. Transradial cerebral angiography (TRA) is a convenient but challenging procedure, particularly for selecting the left internal carotid artery (ICA) and vertebral artery. To predict the selection of the left ICA using CT and MR images acquired before TRA. Overall, 306

Characteristics of highly cited articles in cerebral angiography. To present and analyze the characteristics of the 100 most cited articles that used cerebral angiography for clinical evaluation and intervention. Two researchers independently extracted articles from multiple databases and ranked them by citation count to create the "top 100 most-cited" list. The top 100 articles received a total of 115,243 citations. Twenty-one of the top 100 articles were published between 2006 and 2010. Most studied disorder was ischemic stroke ( = 35), and cerebral angiography was used most frequently for diagnosis ( = 88).The United States was affiliated with the highest number of articles ( = 62), with publishing most articles ( = 22). Public sources funded 39 articles, private sources funded 35, and 38

Feasibility of a silicone vascular phantom replicating real arterial contrast filling dynamics on cerebral angiography: An in-vitro pilot study. Some cerebral arterial silicone phantoms have been used in preclinical evaluations. However, typical silicone-based phantoms are limited in their capacity to reproduce real contrast filling dynamics of the human cerebral artery. This study aimed dynamics of clinical cerebral angiography by applying a small cistern filled with a sponge pad at the drainage side of the phantom.

restriction foci on DWI following cerebral angiography (digital subtraction angiography (DSA)) with the TRA or transfemoral artery (TFA) approach and identify predictors of DWI restriction foci. We analysed data from consecutive diagnostic cerebral angiograms obtained between January 2021 and October 2023 at a single tertiary center. MRI DWI was performed 2 hours after DSA. Patients underwent neurological Transradial versus transfemoral access for diagnostic cerebral angiography: frequency of acute MRI findings in 500 consecutive patients at a single center. The frequency of clinically symptomatic and asymptomatic diffusion-weighted imaging (DWI) hyperintense lesions and their correlation with the transradial artery (TRA) approach is unclear. To assess the frequency of abnormal diffusion

The safety and feasibility of using a 5-Fr guiding catheter with a 0.035-inch guidewire in place for cerebral angiography. This study aimed to evaluate the safety and efficacy of performing diagnostic cerebral angiography using a 5-Fr guiding catheter with a 0.035-inch guidewire in place. Actual flow rates at different pressures using the 5-Fr guiding catheter with a 0.035-inch guidewire in place) and conventional methods. The maximum injection pressure at a flow rate of 5 mL/s for the various types of commonly used contrast medium was approximately 350 psi, which is below the pressure limit for cerebral angiography. The guidewire surface remained relatively intact after multiple high-pressure injections. Procedure success and primary success rates did not significantly differ between

Cerebral angiography in outpatient endovascular centers: roadmap and lessons learned from interventional radiology, cardiology, and vascular surgery. A growing proportion of percutaneous procedures are performed in outpatient centers. The shift from hospitals to ambulatory surgery centers and office-based laboratories has been driven by a number of factors, including declining reimbursements , increased patient demand, and competition for hospital resources. This transition has been dominated by the interventional radiology, cardiology, and vascular surgery fields. Cerebral angiography, in contrast, is still performed almost exclusively in a hospital-based setting, despite sharing many features with other endovascular procedures commonly performed in outpatient centers. As interest grows

Early ambulation protocol after diagnostic transfemoral cerebral angiography: an evidence-based practice project. No uniform consensus has been achieved regarding the ambulation protocol after transfemoral cerebral angiography (TFA). Until now, in most hospitals patients are prescribed 8-12 h strict immobilization along with bed rest in the supine position after TFA in China, which causes great discomfort to patients. To evaluate the effect of an evidence-based early ambulation protocol on the prevention of vascular complications and general discomfort in patients following transfemoral cerebral angiography (TFA). A prospective quasi-experimental study was conducted on 214 patients undergoing TFA with manual compression. Patients in the experimental group were placed supine position for 2 h

Mediastinal hematoma after trans-radial cerebral angiography: a case report. Trans-radial (TRA) access has become increasingly prevalent in neurointervention. Nonetheless, mediastinal hematoma after TRA is an infrequent yet grave complication associated with a notably elevated mortality rate. While our review found no reported mediastinal hematoma cases managed conservatively within neuro

Intraoperative cerebral angiography reveals microsurgically occult sequelae of temporary clip application during elective cerebral aneurysm surgery. Temporary clipping (TC) is an essential adjunct in cerebral aneurysm (CA) surgery. Despite appearing insignificant to the surgeon under the microscope, TC may cause parent vessel injury. Intraoperative diagnostic cerebral angiography (ioDCA

Mediastinal and thoracic hematoma following transradial cerebral angiography: a case report. Cerebral angiography through the transradial approach (TRA) is associated with a low risk of complications, but in rare cases, these complications can be life-threatening. A 56-year-old female patient was admitted for transradial cerebral angiography due to the complaint of right limb weakness angiography was conducted immediately, which revealed a patchy contrast medium overflow in a branch of the right costocervical trunk. Selective endovascular occlusion therapy was performed successfully with gelfoam particles and placement of 2 microcoils. At 12 days after cerebral angiography, the patient recovered well and was discharged from the hospital. Mediastinal and thoracic hematoma may occur due

One in six patients exhibit changes in reperfusion on 10-minute repeat cerebral angiography during mechanical thrombectomy for stroke. Post-recanalization target vessel re-occlusion (TVR) following endovascular thrombectomy (EVT) is a known complication of the procedure, and it is associated with worse long-term functional outcomes. The incidence and factors that contribute to TVR are not well

Procedural outcomes of the transradial versus transfemoral approach for diagnostic cerebral angiograms according to BMI: a propensity score-matched analysis. BMI has been shown to affect choice of access site in coronary intervention procedures, with lower complications reported during transradial (TR) access. To the authors' knowledge, the effect of BMI on outcomes in patients undergoing diagnostic cerebral angiography remains undescribed. This study compares outcomes for BMI subgroups based on access site (TR vs transfemoral [TF] access). The authors conducted a single-center retrospective study of patients who underwent diagnostic cerebral angiography between December 2019 and January 2024. Propensity score matching was used to create two similar cohorts (TR and TF). These cohorts were

Automated catheter segmentation and tip detection in cerebral angiography with topology-aware geometric deep learning. Visual perception of catheters and guidewires on x-ray fluoroscopy is essential for neurointervention. Endovascular robots with teleoperation capabilities are being developed, but they cannot 'see' intravascular devices, which precludes artificial intelligence (AI) augmentation that could improve precision and autonomy. Deep learning has not been explored for neurointervention and prior works in cardiovascular scenarios are inadequate as they only segment device tips, while neurointervention requires segmentation of the entire structure due to coaxial devices. Therefore, this study develops an automatic and accurate image-based catheter segmentation method in cerebral angiography

Efficacy and safety of a neurointerventional operation robotic assistance system in cerebral angiography. At present, neurointerventional surgery requires angiographers to perform operations in the digital subtraction angiography (DSA) room. Ionising radiation and chronic joint damage are still unavoidable for angiographers. Therefore, we researched and developed a neurointerventional robot -assisted system, which is operated by angiographers in an operating room outside the DSA room. We have conducted a prospective, multicentre, randomised controlled trial to evaluate the safety and efficacy of a robot-assisted system in human cerebral angiography. In the future, this research will provide a platform for the research and development of an intelligent surgical system and bring revolutionary

Transradial versus transfemoral access routes for diagnostic cerebral angiography: a large single-center comparative cost-analysis study. Recently, the transradial (TR) approach has become a common alternative because of its safety profile and increased patient satisfaction compared with the transfemoral (TF) route. Both routes are associated with their respective associated costs , and differences typically emerge on the basis of patient anatomy, operator expertise, and occurrence of complications. The authors' objective was to compare the overall costs of diagnostic cerebral angiography via both routes and to shed light on the individual equipment costs of each route. This retrospective single-center study of 926 elective diagnostic angiograms was performed between December 2019

Robotic Diagnostic Cerebral Angiography: A Multicenter Experience of 113 Patients. Neurointerventional robotic systems have potential to reduce occupational radiation, improve procedural precision, and allow for future remote teleoperation. A limited number of single institution case reports and series have been published outlining the safety and feasibility of robot-assisted diagnostic cerebral angiography. This is a multicenter, retrospective case series of patients undergoing diagnostic cerebral angiography at three separate institutions - University of California, Davis (UCD); University of California, Los Angeles (UCLA); and University of California, San Francisco (UCSF). The equipment used was the CorPath GRX Robotic System (Corindus, Waltham, MA). A total of 113 cases were analyzed who

Preoperative cerebral angiography nearly doubles the rate of diffusion-weighted imaging lesion detection following minimally invasive surgery for intracerebral hemorrhage. Diffusion-weighted imaging (DWI) lesions have been linked to poor outcomes after intracerebral hemorrhage (ICH). We aimed to assess the impact of cerebral digital subtraction angiography (DSA) on the presence of DWI lesions

Impact of a selective lens dose reduction protocol in 3D rotational angiography on radiation exposure to the eye lens during cerebral angiography: a randomized controlled trial. We aimed to investigate the radiation dose to the eye lens (lens dose) during cerebral angiography and to evaluate the effectiveness of the lens dose reduction protocol for 3-dimensional rotational angiography (3D-RA ) in reducing overall lens dose exposure. We conducted a randomized, controlled clinical trial at a tertiary hospital with patients undergoing cerebral angiography. The lens dose reduction protocol in 3D-RA involved raising the table to position the patient's eye lens away from the rotation axis. The lens dose was estimated by measuring the entrance surface air kerma using a photoluminescent glass dosimeter