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Salvage failed CTA in ED patient

Case Study
Philips CT Clinical Science Philips Healthcare • USA

Clinical history

A middle-aged male complaining of shortness of breath presented to the emergency department at Cliniques Universitaires St-Luc and subesquently was scanned on the IQon Spectral CT for a chest CTA. The injection failed due to Valsalva, causing a non-diagnostic conventional image.

Image scan parameters

  • 8 mGy CTDIvol
  • 185 mGY x cm DLP
  • 2.6 mSv* effective dose


 * AAPM Technical Report 96
Conventional CT MonoE 40 keV
Conventional CT
MonoE 40 keV
Conventional CT MonoE 40 keV
Conventional CT
MonoE 40 keV

Clinical significance

Because spectral results are always on, the physician was able to use low MonoE spectral results to identify a subtle emboli.

Spectral results provide enhanced diagnostic capabilities, even in patients who would not have been preselected for dual-energy techniques.

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

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Nov 29, 2016

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Case Study
IntelliSpace Portal, IQon Spectral CT
Body, chest, chest CTA, MonoE, PE, Pulmonary Embolism, shortness of breath, spectral CT, Vascular

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