Motion artifact

Last revised by Andrew Murphy ◉ on 23 Mar 2023

Citation, DOI, disclosures and article data

Citation:

Murphy A, Iflaq P, Keshavamurthy J, et al. Motion artifact. Reference article, Radiopaedia.org (Accessed on 22 Sep 2023) https://doi.org/10.53347/rID-48589

DOI:

https://doi.org/10.53347/rID-48589

Permalink:

https://radiopaedia.org/articles/48589

rID:

48589

Article created:

16 Oct 2016, Andrew Murphy ◉

Disclosures:

At the time the article was created Andrew Murphy had no recorded disclosures.

View Andrew Murphy's current disclosures

Last revised:

23 Mar 2023, Andrew Murphy ◉

Disclosures:

At the time the article was last revised Andrew Murphy had no financial relationships to ineligible companies to disclose.

View Andrew Murphy's current disclosures

Revisions:

7 times, by 5 contributors - see full revision history and disclosures

Sections:

Radiography, Imaging Technology

Synonyms:

Motion artefact
Movement artifact
Movement artefact

Motion artifact is a patient-based artifact that occurs with voluntary or involuntary patient movement during image acquisition.

Misregistration artifacts, which appear as blurring, streaking, or shading, are caused by patient movement during a CT scan. Blurring also occurs with patient movement during radiographic examinations.

If patient movement is voluntary, patients may require immobilization or sedation to prevent this.

Involuntary motion, such as respiration or cardiac motion, may cause artifacts that mimic pathology in surrounding structures.

This artifact can be reduced by using a fast scanning technique. Techniques, such as cardiac gating, may be used for examinations that concern the mediastinum.