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Heterogeneous Pulmonary Perfusion on Dual-Energy Computed Tomography

Faulty Postprocessing or New Artifact?

Borse, Riddhi MD; Homayounieh, Fatemeh MD; Singh, Ramandeep MD; Digumarthy, Subba R. MD

Journal of Computer Assisted Tomography: November/December 2018 - Volume 42 - Issue 6 - p 885–886
doi: 10.1097/RCT.0000000000000797
Pulmonary and Thoracic Applications of Dual Energy CT

Iodine uptake in the lungs and intrathoracic lesions on postcontrast dual-energy computed tomography is used for evaluation of pulmonary embolism–related perfusion defects and pulmonary infarctions. It has been applied in characterization and treatment response assessment of lung and mediastinal abnormalities. We report a new imaging artifact or faulty image postprocessing in a commercially available rapid kV switching technique of dual-energy computed tomography, which can confound its clinical utility for evaluation of iodine uptake.

From the Department of Imaging, Massachusetts General Hospital, Boston, MA.

Received for publication August 2, 2018; accepted August 7, 2018.

Correspondence to: Ramandeep Singh, MD, Webster Center for Quality and Safety, Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Boston, MA 02114 (e-mail:

The authors declare no conflict of interest.

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