Quantitative perfusion computed tomography measurements of cerebral hemodynamics: Correlation with digital subtraction angiography identified primary and secondary cerebral collaterals in internal carotid artery occlusive disease

2012 ◽  
Vol 81 (6) ◽  
pp. 1224-1230 ◽  
Author(s):  
Xiao-qing Cheng ◽  
Jian-ming Tian ◽  
Chang-jing Zuo ◽  
Jia Liu ◽  
Qi Zhang ◽  
...  
2020 ◽  
Vol 48 (10) ◽  
pp. 030006052096300
Author(s):  
Jianfeng Li ◽  
Xiaohong Chen ◽  
Jing Zhou

Mucosal melanoma of the eustachian tube is a rare and highly malignant tumour. Local radical resection combined with radiotherapy and systemic chemotherapy is a classic treatment strategy for this tumour. The internal carotid artery (ICA) is easily damaged when this tumour is removed. Once the ICA ruptures and causes haemorrhage, it can be fatal. We report a case of mucosal malignant melanoma of the eustachian tube with ICA rupture and haemorrhage in a 62-year-old woman 3 days after resection of the tumour. After successful emergency endotracheal intubation, anti-shock treatment was performed. Further, the ICA was examined using digital subtraction angiography under general anaesthesia and the bleeding site was embolized. The patient recovered uneventfully after surgery and was discharged from hospital without hemiplegia, aphasia, or other intracranial complications. Because of economic reasons, the patient discontinued comprehensive treatment after being discharged from the hospital. Finally, she developed bone and kidney metastases 8 months after surgery and died of distant metastases 1.5 years later. When removing eustachian tube lesions, the ICA must be particularly protected. Once the ICA ruptures and there is postoperative haemorrhage, prevention of airway asphyxia, timely anti-shock treatment, and emergency digital subtraction angiography and vascular embolization are effective treatment methods.


2014 ◽  
Vol 43 (2) ◽  
pp. 67-71
Author(s):  
Subash Kanti Dey ◽  
Lipy Bakshi ◽  
Md Shahidullah ◽  
Ahsan Habib ◽  
Manabendra Battacharya ◽  
...  

Digital subtraction angiography (DSA) is the gold standard investigation to assess the extracranial stenosis of carotid vessels. But this is an invasive diagnostic tool. So it is still a controversial issue whether duplex ultrasound is an alternative to DSA for measurement of stenosis of carotid vessels. This prospective crossectional observational study was conducted in the department of Neurology, BSMMU, Dhaka from May 2012 to April 2013 to assess the diagnostic accuracy of duplex ultrasound and its potential to replace DSA before performing carotid endarterectomy (CEA) and carotid stenting. Total of 38 patients, 33 patients of nondisabling ischaemic stroke and 5 patients with history of TIAs whose extracranial carotid stenosis was >50% on duplex ultrasound were selected for DSA. DSA was done on these vessels and stenosis was measured using NASCET criteria. Results of USD and DSA were compared to determine the sensitivity, specificity and accuracy of duplex ultrasound (USD). At 70% stenosis of right internal carotid artery and left internal carotid artery the sensitivity, specificity and accuracy were 93.8%, 63.7%, 89.5% and 93.3%, 75%, 89.5% respectively. This level of diagnostic efficiency of USD is less than that of DSA of carotid arteries. It was found in this study that, USD underestimates or overestimates the degree of carotid stenosis. DSA was safe and effective in determining stenosis in this study & there was no 67 complication. So before taking any decision for carotid endarterectomy or carotid artery stenting, digital subtraction angiography of carotid vessels should be done. DOI: http://dx.doi.org/10.3329/bmj.v43i2.21385 Bangladesh Med J. 2014 May; 43 (2): 67-71


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