scholarly journals Adequacy of an early arterial phase low-volume contrast protocol in 64-detector computed tomography angiography for aortoiliac aneurysms

2008 ◽  
Vol 47 (3) ◽  
pp. 492-498 ◽  
Author(s):  
Nicolas Diehm ◽  
Constantino Pena ◽  
James F. Benenati ◽  
Athanassios I. Tsoukas ◽  
Barry T. Katzen
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Arterial Phase ◽  
Low Volume ◽  
Early Arterial Phase

scholarly journals Computed tomography angiography lightbulb sign: Characteristic enhancement pattern on neck computed tomography angiography in differentiating paraganglioma from schwannoma of the carotid space

2020 ◽  
Vol 33 (5) ◽  
pp. 437-442
Author(s):  
Suradech Suthiphosuwan ◽  
Helin D Bai ◽  
Eugene Yu ◽  
Aditya Bharatha
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Preoperative Assessment ◽  
Arterial Phase ◽  
Preoperative Embolization ◽  
Resonance Imaging ◽  
Enhancement Pattern ◽  
Neck Tumors ◽  
Carotid Space

It is important to correctly distinguish paragangliomas from other tumors such as schwannomas in the preoperative assessment of head and neck tumors because paragangliomas have a propensity to bleed profusely during surgery. Therefore, preoperative embolization is often required while with schwannomas preoperative embolization is generally not required. Occasionally, schwannomas can mimic paragangliomas on routine computed tomography and magnetic resonance imaging of the neck. In this study, we retrospectively evaluated the computed tomography angiography of the neck of 10 patients with carotid space tumors. Seven patients had pathologically proven paraganglioma while three patients had schwannomas. We describe the “computed tomography angiography lightbulb sign” as avid homogeneous enhancement in the arterial phase which can accurately distinguish these entities.

scholarly journals Venous Phase of Computed Tomography Angiography Increases Spot Sign Detection, but Intracerebral Hemorrhage Expansion Is Greater in Spot Signs Detected in Arterial Phase

Stroke ◽  
2014 ◽  
Vol 45 (3) ◽  
pp. 734-739 ◽  
Author(s):  
David Rodriguez-Luna ◽  
Dar Dowlatshahi ◽  
Richard I. Aviv ◽  
Carlos A. Molina ◽  
Yolanda Silva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Intracerebral Hemorrhage ◽  
Computed Tomography Angiography ◽  
Arterial Phase ◽  
Spot Sign ◽  
Sign Detection ◽  
Venous Phase

Mid-aortic syndrome: computed tomography angiography depicting extensive collateral circulation in an 11-year-old patient with thoracoabdominal aortic coarctation

VASA ◽  
2012 ◽  
Vol 41 (2) ◽  
pp. 132-135 ◽  
Author(s):  
Krohn ◽  
Gebauer ◽  
Hübler ◽  
Beck
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Collateral Circulation ◽  
Intestinal Ischemia ◽  
Clinical Presentation ◽  
Lower Limbs ◽  
Upper Body ◽  
Descending Aorta ◽  
Before And After ◽  
Blood Pressures

The mid-aortic syndrome is an uncommon clinical condition characterized by severe narrowing of the descending aorta, usually with involvement of its renal and visceral branches, presenting with uncontrollably elevated blood pressures of the upper body, renal and cardiac failure, intestinal ischemia, encephalopathy symptoms and claudication of the lower limbs, although clinical presentation is variable. In this article we report the case of an eleven-year-old patient with the initial diagnosis of a mid-aortic syndrome and present the computed tomography angiography pictures and reconstructions before and after surgical therapy.

Computed Tomography Angiography (CTA) Evaluation of Spontaneous Subarachnoid Hemorrhage

2020 ◽  
Vol 6 (2) ◽  
pp. 78-81
Author(s):  
Md Tauhidul Islam Chowdhury ◽  
Mohammad Shah Jahirul Hoque Chowdhury ◽  
Mohammad Sadekur Rahman Sarkar ◽  
KM Ahasan Ahmed ◽  
Md Nazmul Kabir ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Subarachnoid Hemorrhage ◽  
Computed Tomography Angiography ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Multiple Aneurysm ◽  
Traumatic Subarachnoid Hemorrhage ◽  
One Year ◽  
Spontaneous Subarachnoid Hemorrhage

Background: In evaluation of non-traumatic subarachnoid hemorrhage CT angiography (CTA) has 97-98% sensitivity and near 100% specificity. Objective: This study was conducted to evaluate the CTA findings of CT positive non traumatic subarachnoid hemorrhage. Methodology: This is an observational cross sectional study performed in Neurology department of National Institute of Neurosciences and Hospital, Dhaka over one year period (January 2019 to December 2019). Total 87 CT positive subarachnoid hemorrhage cases were purposively included in this study. All CT positive patients underwent CTA of Cerebral vessels for further evaluation. The angiography were evaluated by competent neuro-radiologists blinded about the study. Result: Among 87 patients, 40.2% were male and 59.8% were female. The average age was 53.33±11.1 years. Among the studied patient the source of bleeding was found 78.16% aneurysmal and 21.84% non-aneurysmal. 85.30% patients had single aneurysm and 14.70% had multiple aneurysm. The highest number of patient had Acom aneurysm (41.17%) followed by MCA (22.05%), ICA (13.23%), ACA (7.35%) and vertebral artery (1.14%) in order of frequency. Among the multiple aneurysm group most of the patients had combination of Acom, MCA and ICA aneurysm. Conclusion: From this study, we can conclude that CTA can be used as the primary diagnostic tool in evaluation of spontaneous SAH. Journal of National Institute of Neurosciences Bangladesh, 2020;6(2): 78-81

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