Items tagged “artifact”

16 results found
Case

Normal hepatic perfusion defect-segment IVb

Arrow points to p...
 Diagnosis certain
Dr Wael Nemattalla
Published 26 Feb 2010
71% complete
CT
Case

Mirror image artifact

 Diagnosis certain
Radswiki
Published 20 Oct 2010
72% complete
Ultrasound
Case

Aliasing artifact

Wrap-around artif...
 Diagnosis not applicable
Dr Usman Bashir
Published 22 Jan 2012
39% complete
MRI
Article

MRI artifacts

MRI artifacts are numerous and give an insight into the physics behind each sequence. Some artifacts affect the quality of the MRI exam while others do not affect the diagnostic quality but may be confused with pathology. When encountering an unfamiliar artifact, it is useful to systematically ...
Article

Slice-overlap artifact

The slice-overlap artifact, also known as cross-talk artifact, is a name given to the loss of signal seen in an image from a multi-angle, multi-slice acquisition, as is obtained commonly in the lumbar spine. It should not be confused with cross excitation which although similar in causation, is ...
Article

CT artifacts

CT artifacts are common and can occur for various reasons. Knowledge of these artifacts is important because they can mimic pathology (e.g. partial volume artifact) or can degrade image quality to non-diagnostic levels.  CT artifacts can be classified according to the underlying cause of the ar...
Case

Mirror image artifact

 Diagnosis certain
Dr Ayush Goel
Published 28 Dec 2013
94% complete
Ultrasound
Article

X-ray artifacts

X-ray artifacts can present in a variety of ways including abnormal shadows noted on a radiograph or degraded image quality, and have been produced by artificial means from hardware failure, operator error and software (post-processing) artifacts.  There are common and distinct artifacts for fi...
Case

Ring artifact

 Diagnosis not applicable
Dr Henry Knipe
Published 07 Mar 2014
39% complete
CT
Case

Static electricity

 Diagnosis certain
Dr Ayush Goel
Published 14 Jul 2014
79% complete
X-ray
Article

Anisotropy

Anisotropy is an artefact encountered in ultrasound, notably in muscles and tendons during a musculoskeletal ultrasound. In musculoskeletal applications, the artefact may prompt an incorrect diagnosis of tendinosis or tendon tear. When the ultrasound beam is incident on a fibrillar structure as...
Article

Ring down artifact

Ring down artifact is a special type of resonance artifact. Its appearance is similar to the ladder-like reverberation of comet-tail artifact, but it is produced by a completely different mechanism. The artifact is only associated with gas bubbles, and occurs when an ultrasound pulse encounters...
Case

Ring down artifact

 Diagnosis not applicable
Dr Matt A. Morgan
Published 23 Sep 2016
44% complete
Annotated image
Case

Craniofacial shotgun pellet injury

 Diagnosis certain
Dr Shailaja Muniraj
Published 25 Oct 2016
87% complete
X-rayCT
Case

Dead pixel artifact

 Diagnosis not applicable
Benjamin Wilson
Published 22 Dec 2017
60% complete
X-ray
Case

Calcified ureteric stent

 Diagnosis certain
Dr Martin Pike
Published 26 Sep 2018
88% complete
X-rayAnnotated image

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