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Extra resources for An Atlas of Contrast-Enhanced Angiography
It is less susceptible to artifacts related to slow flow, but does require accurate coordination of contrastenhancement and sequence acquisition, and requires modern magnetic hardware. In a systematic review of the published trials in patients with severe (70–99%) carotid artery stenosis, CE-MRA appeared very effective, although the numbers of patients studied were low22. Comparisons of MRA and X-ray angiography are good for high-grade stenoses, with a median sensitivity of 93% and a median specificity of 88%.
Coronal acquisition requires a large field of view to encompass all the pulmonary vessels, and wrap must be avoided by ensuring the patient extends their arms above their head or across the front of their chest. Imaging in the coronal plane can be performed using a single injection of contrast agent repeated several times3, but resolution is limited because of the large field of view. For sagittal acquisition, the patient’s arms should be by their sides; and two separate acquistions are performed, one of the right chest and one of the left; using two separate contrast agent injections.
Am J Roentgenol 1993; 161:1 4 Carotid artery disease INTRODUCTION Atheromatous disease affecting the carotid arteries may result in vessel narrowing; leading to symptoms of cerebral ischemia that may vary from temporary blindness (transient retinal ischemia) to complete limb paralysis (hemiparesis). Management of carotid artery disease includes risk factor modification; identification of carotid artery stenosis, and subsequent surgical or medical management. 1 A 70-year-old man was admitted with headache and a right-sided weakness.