A comparison of patient dose levels between 3/4 vessel conventional angiography and computed tomography angiography during examinations to investigate subarachnoid haemorrhage

Radiography ◽  
2007 ◽  
Vol 13 (3) ◽  
pp. 173-179 ◽  
Author(s):  
David Spanton ◽  
Ruth M. Strudwick
Keyword(s):  
Computed Tomography ◽  
Subarachnoid Haemorrhage ◽  
Computed Tomography Angiography ◽  
Patient Dose ◽  
Conventional Angiography ◽  
Dose Levels

scholarly journals Evaluation of preoperative computed tomography angiography in association with conventional angiography versus computed tomography angiography only, in the endovascular treatment of aortic diseases

2013 ◽  
Vol 46 (5) ◽  
pp. 265-272 ◽  
Author(s):  
Patrick Bastos Metzger ◽  
Eduardo Rafael Novero ◽  
Fabio Henrique Rossi ◽  
Samuel Martins Moreira ◽  
Frederico Augusto Linhares ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Retrospective Study ◽  
Endovascular Treatment ◽  
Computed Tomography Angiography ◽  
Therapeutic Intervention ◽  
Technical Success ◽  
Aortic Diseases ◽  
Conventional Angiography ◽  
Therapeutic Success ◽  
Abdominal Aortic

Objective To evaluate the association of conventional angiography (AG) with computed tomography angiography (CTA) as compared with CTA only, preoperatively, in the treatment of aortic diseases. Materials and Methods Retrospective study involving patients submitted to endovascular treatment of aortic diseases, in the period from January 2009 to July 2010, with use of preoperative CTA + conventional AG or CTA only. The patients were divided into two groups, namely: G1 – thoracic aortic diseases; and G2 – abdominal aortic diseases. G1 was subdivided into 1A (preoperative AG + CTA) and 1B (preoperative CTA). G2 was subdivided into 2C (CTA + AG) and 2D (CTA only). Results The authors evaluated 156 patients. In subgroups 1A and 1B, the rate of technical success was, respectively, 100% and 94.7% (p = 1.0); and the rate of therapeutic success was, respectively, 81% and 58% (p = 0.13). A higher number of complications were observed in subgroup 1B (p = 0.057). The accuracy in the calculation of the prosthesis was higher in subgroup 1A (p = 0.065). In their turn, the rate of technical success in subgroups 2C and 2D was, respectively, 92.3% and 98.6% (p = 0.17). The rate of therapeutic success was 73% and 98.6% (p = 0.79). Conclusion Preoperative conventional AG should be reserved for cases where CTA cannot provide all the information in the planning of a therapeutic intervention.

Carotid Web Phenotype Is Uncommonly Associated With Classic Fibromuscular Dysplasia: A Retrospective Observational Study

Stroke ◽  
2021 ◽  
Author(s):  
Vera Sharashidze ◽  
Raul G. Nogueira ◽  
Alhamza R. Al-Bayati ◽  
Nirav Bhatt ◽  
Fadi B Nahab ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Fibromuscular Dysplasia ◽  
Internal Carotid ◽  
Filling Defect ◽  
High Yield ◽  
Conventional Angiography ◽  
Posterior Aspect ◽  
Carotid Bulb ◽  
Ischemic Attack

Background and Purpose: Carotid web (CaW) is an intimal form of fibromuscular dysplasia (FMD) involving the carotid bulb which has been increasingly recognized as a potential cause of recurrent ischemic strokes. It is overlooked as a separate entity and often dismissed if no coexistent signs of classic FMD changes are observed. We aim to evaluate the frequency of classic FMD in high-yield vascular territories in patients with symptomatic CaW. Methods: This was a retrospective analysis of a symptomatic CaW database of 2 comprehensive stroke centers (spanning September 2014–October 2020). The diagnosis of a CaW during a stroke workup was defined as the presence of a shelf-like linear filling defect in the posterior aspect of the carotid bulb on computed tomography angiography in patients with acute ischemic stroke or transient ischemic attack of undetermined cause after a thorough evaluation. Neck computed tomography angiography and renal conventional angiography images were independently evaluated by two readers blinded to the laterality and clinical details to inspect the presence of underlying classic FMD. Results: Sixty-six patients with CaW were identified. Median age was 51 years (interquartile range, 42–57), and 74% were women. All patients had neck computed tomography angiography (allowing for bilateral vertebral and carotid evaluation), whereas 47 patients had additional digital subtraction angiography (which evaluated 47 carotids ipsilateral to the stroke and 10 contralateral carotids). Internal carotid artery classic FMD changes were noted in only 6 out of 66 (9%) in the ipsilateral carotids. No contralateral carotid or vertebral artery classic FMD changes were observed. Renal artery catheter-based angiography was obtained in 16 patients/32 arteries and only 1 patient/2 renal arteries demonstrated classic FMD changes. Conclusions: CaW phenotype is uncommonly associated with classic FMD changes. Coexistent classic FMD does not constitute a useful marker to corroborate or exclude CaW diagnosis.

Decision-making and neurosurgeons’ agreement in the management of aneurysmal subarachnoid haemorrhage based on computed tomography angiography

2017 ◽  
Vol 160 (2) ◽  
pp. 253-260 ◽  
Author(s):  
Nicolai Maldaner ◽  
Jan-Karl Burkhardt ◽  
Martin Nikolaus Stienen ◽  
Johannes Goldberg ◽  
David Bervini ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Decision Making ◽  
Subarachnoid Haemorrhage ◽  
Computed Tomography Angiography ◽  
Aneurysmal Subarachnoid Haemorrhage

scholarly journals Angiographic Pitfall: Duplicated Tapered A1 Segment of the Anterior Cerebral Artery Mimicking an Anterior Communicating Artery Aneurysm

2011 ◽  
Vol 17 (2) ◽  
pp. 179-182 ◽  
Author(s):  
A.G. Weil ◽  
M.W. Bojanowski ◽  
F. Scholtes ◽  
T.E. Darsaut ◽  
F. Signorelli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cerebral Artery ◽  
Computed Tomography Angiography ◽  
Anterior Cerebral Artery ◽  
Surgical Intervention ◽  
Artery Aneurysm ◽  
Anterior Communicating Artery ◽  
Conventional Angiography ◽  
Hemodynamic Stress ◽  
Partially Occluded

We describe a misleading case of a partially occluded A1 segment duplication that mimicked an ACoA aneurysm on computed tomography angiography and conventional angiography and led to surgical intervention. The location of such an anomaly at the ACoA on the side of least hemodynamic stress may provide a clue to recognizing this variant.

Sixteen-row multislice computed tomography angiography in the diagnosis and characterization of intracranial aneurysms: comparison with conventional angiography and intraoperative findings

2008 ◽  
Vol 108 (6) ◽  
pp. 1184-1191 ◽  
Author(s):  
Wenhua Chen ◽  
Yilin Yang ◽  
Wei Xing ◽  
Jianguo Qiu ◽  
Ya Peng
Keyword(s):  
Computed Tomography ◽  
Ct Angiography ◽  
Computed Tomography Angiography ◽  
Intracranial Aneurysms ◽  
Image Interpretation ◽  
Multislice Ct ◽  
Ct Scanner ◽  
Conventional Angiography ◽  
Significant Difference

Object The goal of this study was to prospectively compare the effectiveness of 16-slice computed tomography (CT) angiography with that of conventional digital subtraction (DS) angiography and the surgical findings used to detect and characterize intracranial aneurysms. Methods Two hundred forty-four consecutive patients underwent both CT angiography and DS angiography no more than 3 days apart. Computed tomography angiography was performed with a 16-row multislice CT scanner in which a collimation of 0.75 mm was used. Two observers independently reviewed the CT images, and 1 of the 3 attending neuroradiologists reviewed the DS angiograms. They determined the presence, location, quantitation, and characterization of the intracranial aneurysms. Statistical results were calculated independently for the image interpretation performed by the 2 CT scan readers and the DS angiogram reader by using the combination of DS angiography or intraoperative findings or both as a reference standard. Results One hundred thirty-six patients harboring 153 intracranial aneurysms were included in this series. There was no statistically significant difference in sensitivity between 16-slice CT angiography and conventional DS angiography (p > 0.05). The sensitivities of 16-slice CT angiography for aneurysms < 5 mm, 5–10 mm, and > 10 mm were 94.8, 100, and 100%, respectively, on a per-aneurysm basis. The overall sensitivity and specificity of CT angiography for aneurysms were 98.0 and 99.1%, respectively. Sixteen-slice CT angiograms were clearer and more accurate in depicting the relationship of aneurysms to bone structures and adjacent branch vessels. Conclusions Computed tomography angiography using a 16-slice scanner is an accurate tool for detecting and characterizing intracranial aneurysms, including small aneurysms. Noninvasive 16-slice CT angiography will become a viable replacement for conventional DS angiography in the diagnosis and characterization of aneurysms.

CRosser As First choice for crossing Totally occluded coronary arteries (CRAFT Registry): focus on conventional angiography and computed tomography angiography predictors of success

2011 ◽  
Vol 7 (4) ◽  
pp. 480-486 ◽  
Author(s):  
Héctor M. García-García ◽  
Salvatore Brugaletta ◽  
Carlos A.G. van Mieghem ◽  
Nieves Gonzalo ◽  
Roberto Diletti ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Arteries ◽  
Computed Tomography Angiography ◽  
Predictors Of Success ◽  
Conventional Angiography ◽  
First Choice

Evaluation of Coronary Artery Disease by Computed Tomography Angiography in Patients Treated for Childhood Hodgkin's Lymphoma

2010 ◽  
Vol 28 (6) ◽  
pp. 1025-1030 ◽  
Author(s):  
Serhan Küpeli ◽  
Tuncay Hazırolan ◽  
Ali Varan ◽  
Deniz Akata ◽  
Dursun Alehan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Computed Tomography Angiography ◽  
Hodgkin’S Lymphoma ◽  
Hodgkin's Lymphoma ◽  
Conventional Angiography ◽  
Critical Stenosis ◽  
Significant Difference ◽  
Artery Disease

Purpose To detect pathologies in coronary arteries by computed tomography angiography (CTA) in survivors of childhood Hodgkin's lymphoma who have been treated with radiotherapy and/or cardiotoxic agents. Patients and Methods Patients with HL who have been in remission for at least 2 years after completion of therapy were included. CBC, lipid profile, urine analysis, brain natriuretic peptide, troponin-T, creatinine kinase–myocardial band, ECG, telecardiography, echocardiography, and CTA of the patients were performed. Cardiac vascular abnormalities were noted. Results A total of 119 patients were included in the study. In 19 patients (16%), we found coronary artery abnormalities. There was a significant difference between the patients who received mediastinal radiotherapy and those who did not (P = .02). By multivariate analysis, in patients receiving mediastinal radiotherapy the risk of developing a coronary artery abnormality was found to increase 6.8 times compared with patients who did not receive mediastinal radiotherapy (P = .009). Stent implantation was performed in a 28-year-old patient because of critical stenosis in right coronary. In two patients some irregularities were detected both in CTA and conventional angiography, and they remained in close follow-up. A 22-year-old patient whose CTA showed critical stenosis in his left anterior descending artery refused the conventional angiography. Conclusion To our knowledge, this is the first large study using CTA for detection of coronary abnormalities in patients treated for HL in pediatric age group. Coronary CTA is a minimally invasive tool for early diagnosis of coronary artery disease in patients who were treated with mediastinal radiotherapy and/or cardiotoxic chemotherapy.

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