title: Pulmonary pseudoemboli: a new artifact arising from a commercial metal artifact reduction algorithm for computed tomographic image reconstruction.
abstract: Metal artifact reduction algorithms for computed tomographic (CT) image reconstruction have recently become commercially available on modern CT scanners for reducing artifacts from orthopedic hardware. However, we have observed that a commercial orthopedic metal artifact reduction algorithm can produce the appearance of artifactual pulmonary emboli when applied to spinal hardware in contrast-enhanced CT scans of the chest. We provide 4 case examples demonstrating this previously undescribed artifact.
authors.affiliation: From the Department of Radiology, Keck School of Medicine of USC, Los Angeles, CA.
authors.forename: Phillip M
authors.initials: PM
authors.lastname: Cheng
authors.forename: Miriam
authors.initials: M
authors.lastname: Romero
authors.forename: Vinay A
authors.initials: VA
authors.lastname: Duddalwar
mesh_terms: D000368:Aged; D000465:Algorithms; D016477:Artifacts; D003287:Contrast Media; D006801:Humans; D007479:Iopamidol; D008297:Male; D008670:Metals; D008875:Middle Aged; D019736:Prostheses and Implants; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011857:Radiographic Image Interpretation, Computer-Assisted; D013123:Spinal Fusion / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D008670:Metals; D007479:Iopamidol