نتایج جستجو برای: computed tomography angiography
تعداد نتایج: 295669 فیلتر نتایج به سال:
OBJECTIVE Pulmonary embolism is a major cause of maternal death. The work up for suspected pulmonary embolism is complex, with many potential diagnostic options. We performed a cost analysis to evaluate which of several diagnostic strategies was the most cost-effective with the least number of deaths from pulmonary embolism. STUDY DESIGN We created a decision tree to evaluate the following st...
Background: This study assessed the application value of 64-slice spiral computed tomography angiography (CTA) in a follow-up evaluation of patients receiving coronary stent implantation. Materials and Methods: A total of 468 patients who underwent percutaneous coronary intervention (PCI) at our hospital between January 2013 and October 2016 were selected for this study. Coronary angiography an...
Computed tomography angiography (CTA) data sets without hardware based bone subtraction have the disadvantage of containing the bone structures which particularly overlap with vessel intensities; therefore vessel segmentation is hampered. Segmentation methods developed for CTA without bones can not handle these data sets and manual cerebral vessel segmentation is not realizable in clinical rout...
The practical usefulness of computed tomography with intrathecal metrizamide in imaging the brain stem is illustrated in six examples where the lesions were misdiagnosed on intravenously enhanced computed tomography, angiography , or air study. Focal and diffuse atrophic changes of the brain stem were demonstrated in symptomatic patients where none of the other radiographic or clinical investig...
Earlier this year, among the usual menu of worrisome daily news, Americans woke up to learn that for the first time in the nation’s history, annual mortality caused by cancer had declined significantly.1 Cancer experts told us in addition that such decline resulted mainly from a reduction in smoking among American men but also as a consequence of successful screening programs for breast and col...
BACKGROUND Multidetector computed tomography coronary angiography (CTA) is a robust method for the noninvasive diagnosis of coronary artery disease. However, in its current form, CTA is limited in its prediction of myocardial ischemia. The purpose of this study was to test whether adenosine stress computed tomography myocardial perfusion imaging (CTP), when added to CTA, can predict perfusion a...
Iatrogenic type A dissection caused by percutaneous coronary intervention is a rare but life-threatening condition. Computed tomographic angiography is an excellent diagnostic tool commonly utilized if such procedural complication is clinically suspected. There are, however, potential diagnostic challenges. Herein, we present an illustrative case of iatrogenic type A dissection successfully dia...
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