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Follow-up scan revealing incidental large PE in right middle lung

Case Study
Philips CT Clinical Science Philips Healthcare • USA

Clinical history

A middle-aged male with lung cancer was referred to the University of Cologne for a follow-up scan on the IQon Spectral CT to evaluate tumor size.

Image scan parameters

  • 9.1 mGy CTDI
  • 652.6 mGy x cm DLP
Conventional CT MonoE 48 keV
Conventional CT
MonoE 48 keV
The fused Z effective image demonstrated two perfusion defects corresponding to the PE in the right lung and the tumor in left lung.

Clinical significance

The conventional image and the 48 keV MonoE image showed an incidental large PE in the right middle lung. Fused Z effective spectral results helped the clinician identify not only the perfusion deficit from the PE, but also a perfusion defect near the left lung lesion post-therapy.

Spectral results of the IQon Spectral CT provide the opportunity to utilize additional clinical insights for identification of a pulmonary embolism (PE). Because a PE is not always visible on conventional CT scans, the ability to visualize perfusion defects can help lead to a clinical diagnosis of a PE. Iodine-based and Z effective fused spectral results can help the clinician visualize the perfusion defect in lung parenchyma to evaluate the hemodynamic significance of a PE. Additionally, the low mono-energetic images can boost contrast enhancement to help the clinician identify subtle and small pulmonary emboli in segmental and sub-segmental arteries. This PE case demonstrates the unique capabilities of the IQon Spectral CT, including the ability to prospectively or retrospectively provide clinical results to assist in a clinical diagnosis.

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

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Nov 22, 2016

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Case Study
IntelliSpace Portal, IQon Spectral CT
Body, chest, Effective Z, follow up, lesion, lung cancer, lung lesion, lungs, MonoE, Oncology, PE, Perfusion, prospective, pulmonary arteries, retrospective, spectral CT, tumor

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