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Chest CT scan of patient with aortic aneurysm

Case Study
Philips CT Clinical Science Philips Healthcare • USA

Clinical history

This 63 year-old female with a BMI of 38 and glomerular filtration rate (GMR) of 38 mL/min/1.73 m2 was referred to Hennepin County Medical Center for a CT scan of the thoracic aorta. The technologist performed the low dose scan on the IQon Spectral CT scanner and used a mixture of 28 mL of Omnipaque 350 and 28 mL of normal saline, injected at 4 mL/sec.
Conventional CT 40 keV monoE
Conventional CT
40 keV monoE


The images acquired on the IQon Spectral CT scanner showed an aortic aneurysm. The ascending aorta measured up to 5.4 cm at the sinuses of valsalva. The patient's GFR remained stable on follow-up.

Clinical significance

The technologist improved low contrast resolution by using the spectral monoE data provided by the IQon Spectral CT scanner. This helped enable better visualization of vascular structures. The 40 keV reconstructions provided excellent enhancement of the ascending aorta (>350 HU).


Results from case studies are not predictive of results in other cases. Results in other cases may vary.

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Dec 3, 2017

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Case Study
IntelliSpace Portal, IQon Spectral CT
aneurysm, aorta, Body, contrast, low dose, MonoE, spectral CT, thoracic aorta, Vascular

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