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Left knee imaged with calcium suppression

Case Study
Philips CT Clinical Science Philips Healthcare • USA

Clinical history

This 18 year-old came to the emergency department at UCL Brussels after suffering a fall and was referred for a CT scan to rule out a knee fracture. The technologist used the IQon Spectral CT system to perform the CT scan. The patient had an MRI 24 hours later to rule out any pathology.
Conventional CT MRI Calcium suppressed
Conventional CT
Calcium suppressed


Bone marrow edema is a pathological condition that causes decreased fat and increased fluid contents within the bone marrow. This condition might be indicative for other pathological conditions such as bone trauma.

Clinical significance

Visualizing edema in CT is challenging due to the presence of bony tissue obliterating the bone marrow. Currently, the imaging modality of choice is the MRI. Edema is normally not visualized on a typical CT scan. However, with the IQon Spectral CT, you may have the ability to suppress the calcium and enhance the suspected area of edema.


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

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Nov 25, 2017

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Case Study
IntelliSpace Portal, IQon Spectral CT
Body, bone marrow, calcium suppression, emergency department, fracture, knee, lower extremity, Musculoskeletal, rule-out, spectral CT

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