artefact (1) A structure not normally present, but produced by some external action something artificial.
slice-overlap artifact a.k.a.The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. propylene glycol peak: resonates at 1.13 ppm. N-acetylaspartate (NAA) peak: resonates at 2.0 ppm. glutamine-glutamate peak: resonates at 2.2-2.4 ppm. gamma-aminobutyric acid (GABA) peak: resonates at 2.2-2.4 ppm. 2-hydroxyglutarate peak: resonates at 2.25 ppm. arterial spin labeling (ASL) MR perfusion. dynamic contrast enhanced (DCE) MR perfusion. dynamic susceptibility contrast (DSC) MR perfusion. metal artifact reduction sequence (MARS). turbo inversion recovery magnitude (TIRM). fluid attenuation inversion recovery (FLAIR). diffusion tensor imaging and fiber tractography. MRI pulse sequences ( basics | abbreviations | parameters). iodinated contrast-induced thyrotoxicosis. iodinated contrast media adverse reactions. clinical applications of dual-energy CT. 
as low as reasonably achievable (ALARA). Snooping around the adolescent pelvis: good grief, it's the brief!. Mestayer RG, Attaway KC, Polchow TN, Brogdon BG. (2006) Journal of the National Medical Association. Radiographic artifact mimicking epiphysis of the femoral head in a seven-month-old girl. Uras I, Yavuz OY, Kose KC, Atalar H, Uras N, Karadag A. Dose reduction of the female breast in chest CT. Seidenfuss A, Mayr A, Schmid M, Uder M, Lell MM. (2013) Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry. Positioner and clothing artifact can affect one-third radius bone mineral density measurement. Krueger D, Vallarta-Ast N, Libber J, Checovich M, Gangnon R, Binkley N. 
Shirt fold mimicking pneumothorax on chest radiograph: accurate diagnosis by ultrasound.
The same study also showed that the metal components of patients' bras did not have any adverse effect with regards to diagnostic accuracy 3. In the literature are good examples of cases in which clothing has mimicked potentially more serious pathology 4,5.Ĭonversely, at least in mammography, it has been found that women keeping their brassieres on improves dose-reduction techniques. Removing clothing that corresponds to the area of interest is important, in particular digital image receptors are able to pick up even the stencils on t-shirts due to a higher detective quantum efficiency compared to that of film. The radiographer will often either retake the image after the patient has removed the offending garment, or more commonly they will label the image with a warning that clothing artifact is present to avoid any misinterpretation taking place. Clothing artifacts, like jewelry artifacts, are a regular feature on imaging examinations, especially plain radiographs, but in general are recognized for what they are, either at the time the image is taken by the radiographer, or later by the reporting radiologist.
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