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.

Comparison of 16-row multislice CT angiography with conventional angiography for detection and evaluation of intracranial aneurysms

2011 ◽  
Vol 80 (2) ◽  
pp. 455-461 ◽  
Author(s):  
Halil Donmez ◽  
Elman Serifov ◽  
Guven Kahriman ◽  
Ertugrul Mavili ◽  
Ahmet Candan Durak ◽  
...  
Keyword(s):  
Ct Angiography ◽  
Intracranial Aneurysms ◽  
Multislice Ct ◽  
Conventional Angiography

Interrater Agreement in the Radiologic Characterization of Ruptured Intracranial Aneurysms Based on Computed Tomography Angiography

2017 ◽  
Vol 103 ◽  
pp. 876-882.e1 ◽  
Author(s):  
Nicolai Maldaner ◽  
Martin N. Stienen ◽  
Philippe Bijlenga ◽  
Davide Croci ◽  
Daniel W. Zumofen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Intracranial Aneurysms ◽  
Interrater Agreement ◽  
Ruptured Intracranial Aneurysms

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.

Benefit of a Sharp Computed Tomography Angiography Reconstruction Kernel for Improved Characterization of Intracranial Aneurysms

2013 ◽  
Vol 10 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Brian O'Meara ◽  
Jason P. Rahal ◽  
Alexandra Lauric ◽  
Adel M. Malek
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Imaging Modality ◽  
Cerebral Aneurysms ◽  
Matched Pair ◽  
Aneurysm Neck ◽  
Smooth Kernel ◽  
Significant Difference ◽  
Reconstruction Kernel

Abstract BACKGROUND: Computed tomography angiography (CTA) is the first-line imaging modality used for cerebral aneurysms because of its speed and sensitivity for detection, although digital subtraction angiography is often required for more detailed aneurysm shape delineation. OBJECTIVE: To determine whether a sharper CTA reconstruction kernel can better characterize an aneurysm and improve decision-making before intervention. METHODS: Fifteen patients presenting with aneurysmal subarachnoid hemorrhage underwent 64-row CTA. CTA data were reconstructed using the default H20f smooth kernel and a H60f sharp kernel and compared with contemporaneous catheter 3-dimensional rotational angiography (3DRA). Aneurysm neck, width, and aspect ratio measurements were made using intensity line plots of identical projections on all imaging datasets and compared by matched-pair statistics. RESULTS: Aneurysm neck measurements from the H20f smooth kernel revealed overestimation compared with both the sharp kernel (greater by 0.64 ± 0.21 mm, P &lt; .01) and 3DRA (greater by 0.68 ± 0.19 mm, P &lt; .01). There was no statistically significant difference between 3DRA and the sharp kernel CTA measurements. Neck measurements correlated well between the H60f kernel and 3DRA but not between the H20f Kernel and 3DRA (R 0.97 vs 0.86). CONCLUSION: H60f sharp CTA kernel reconstruction provides more accurate anatomic characterization of cerebral aneurysms than the H20f smooth kernel at the expense of less visually pleasing reconstructions. Because it does not require additional contrast, radiation, or imaging hardware and is more similar to 3DRA, it may aid in selecting the appropriate treatment strategy before to evaluation by catheter-based angiography.

Detection and evaluation of intracranial aneurysms with 16-row multislice CT angiography: comparison with conventional angiography

2008 ◽  
Vol 15 (5) ◽  
pp. 311-316 ◽  
Author(s):  
Ender Uysal ◽  
Fatma Oztora ◽  
Alper Ozel ◽  
Sukru Mehmet Erturk ◽  
Hakan Yıldırım ◽  
...  
Keyword(s):  
Ct Angiography ◽  
Intracranial Aneurysms ◽  
Multislice Ct ◽  
Conventional Angiography

scholarly journals STUDY OF THE PULMONARY HYPERTENSION AND PULMONARY VESSELS MEASUREMENTS USING COMPUTED TOMOGRAPHY

2021 ◽  
Vol 9 (4) ◽  
pp. 1-9
Author(s):  
Samia abdelgaum Fathelrahman ◽  
Maha Esmeal Ahmed Esmeal
Keyword(s):  
Computed Tomography ◽  
Pulmonary Hypertension ◽  
Pulmonary Artery ◽  
Main Pulmonary Artery ◽  
Pulmonary Arteries ◽  
Multislice Ct ◽  
Ct Scanner ◽  
Pulmonary Vessels ◽  
Significant Difference ◽  
The Right

The purpose of the study was to study the pulmonary vessels in patients with pulmonary hypertension using Computed Tomography scan (CT) This is a prospective ,analytical study. this study was conducted at Khartoum Hospital (Sudan); in the period between November 2020 - January 2021 a sample of (100) patients with clinically diagnosed as pulmonary hypertension was enrolled, their mean ages were (47.92 ± 19.03) years, the sample included both genders, (42) patients were females while (58) were males and their ages were ranged from (3 - 80) years old. (CTPA) scans were acquired, all patients were examined by using multislice (CT) scanner, the data collected by special designed sheet from findings and analyzed statistically by using an (SPSS) Statistics software package. The sample was directed to study the relationship of pulmonary hypertension with the presence of pulmonary vessels measurements; the patient's age and gender correlation with the pulmonary hypertension were investigated. The results find that the right and left main pulmonary arteries diameters changes were found to be significantly related to the presence of pulmonary hypertension, while there was no significant difference in the main pulmonary artery diameters measurements. The study concluded that CT for pulmonary artery plays an important role in the diagnostic evaluation of patients with pulmonary hypertension this due to it is easily accessible and excellent non-invasive method for the visualization and measurement of pulmonary artery and to know the possible cause of pulmonary hypertension.

Computed tomography angiography and microsurgical flaps for traumatic wounds: What is the added value?

2021 ◽  
pp. 1-9
Author(s):  
Lucas Sousa Macedo ◽  
Renato Polese Rusig ◽  
Gustavo Bersani Silva ◽  
Alvaro Baik Cho ◽  
Teng Hsiang Wei ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Upper Limb ◽  
Computed Tomography Angiography ◽  
Lower Limb ◽  
High Energy ◽  
Lower Limbs ◽  
Added Value ◽  
Vascular Lesions ◽  
Limb Injuries ◽  
Significant Difference

BACKGROUND: Microsurgical flaps are widely used to treat complex traumatic wounds of upper and lower limbs. Few studies have evaluated whether the vascular changes in preoperative computed tomography angiography (CTA) influence the selection of recipient vessel and type of anastomosis and the microsurgical flaps outcomes including complications. OBJECTIVE: The aim of this study was to evaluate if preoperative CTA reduces the occurrence of major complications (revision of the anastomosis, partial or total flap failure, and amputation) of the flaps in upper and lower limb trauma, and to describe and analyze the vascular lesions of the group with CTA and its relationship with complications. METHODS: A retrospective cohort study was undertaken with all 121 consecutive patients submitted to microsurgical flaps for traumatic lower and upper limb, from 2014 to 2020. Patients were divided into two groups: patients with preoperative CTA (CTA+) and patients not submitted to CTA (CTA–). The presence of postoperative complications was assessed and, within CTA+, we also analyzed the number of patent arteries on CTA and described the arterial lesions. RESULTS: Of the 121 flaps evaluated (84 in the lower limb and 37 in the upper limb), 64 patients underwent preoperative CTA. In the CTA+ group, 56% of patients with free flaps for lower limb had complete occlusion of one artery. CTA+ patients had a higher rate of complications (p = 0.031), which may represent a selection bias as the most complex limb injuries and may have CTA indicated more frequently. The highest rate of complications was observed in chronic cases (p = 0.034). There was no statistically significant difference in complications in patients with preoperative vascular injury or the number of patent arteries. CONCLUSIONS: CTA should not be performed routinely, however, CTA may help in surgical planning, especially in complex cases of high-energy and chronic cases, since it provides information on the best recipient artery and the adequate level to perform the microanastomosis, outside the lesion area.

Effective doses in subjects undergoing computed tomography cardiac imaging with the 256-multislice CT scanner

2008 ◽  
Vol 65 (3) ◽  
pp. 442-448 ◽  
Author(s):  
Shinichiro Mori ◽  
Kanae Nishizawa ◽  
Chisato Kondo ◽  
Mari Ohno ◽  
Keiichi Akahane ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cardiac Imaging ◽  
Multislice Ct ◽  
Ct Scanner ◽  
Effective Doses

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.

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