Background In adults right ventricular (RV) measurements from datasets acquired in the transaxial orientation have been found to be more accurate and reproducible than in the short axis plane. Cardiovascular magnetic resonance imaging (CMRI) in children is prone to image misregistration due to less consistent breath-holding which may be more problematic when imaging in the transaxial plane. Thi...

Eighteen digital subtraction angiography (DSA) examinations were retrospectively evaluated for factors that led to their erroneous interpretation. Overlapping vessels obscured pathologic conditions in five cases. In four cases the lesions were not adequately profiled by the DSA projections. Eight lesions were rendered inconspicuous by misregistration artifacts attributable to motion, either fro...

As artifacts are designed, knowledge is accumulated gradually and — as this knowledge is organized and reused — designs and design processes are continually refined. An understanding of the nature and growth of design knowledge and its reuse is essential for implementing better design systems and effective design practices. To develop such an understanding, we introduce artifact theory as an in...

this study investigates the detection of the drowsiness state for a future application such as in the reduction ofthe road traffic accidents. the electroencephalography(eeg), electrooculography (eog), driving quality (dq), and karolinska sleepiness scale (kss) data of 7 male during approximately 20 hours of sleep deprivation were recorded. to reduce the eye blink artifact, an automatic mechanis...

normal 0 false false false en-us x-none fa background: electroencephalography (eeg) has vital and significant applications in different medical fields and is used for the primary evaluation of neurological disorders. hence, having easy access to suitable and useful signal is very important. artifacts are undesirable confusions which are generally originated from inevitable human activities such...

Ventricular tachycardia is a life-threatening condition. ECG artifact caused by the 4to 6-Hz rest tremor of Parkinson disease (PD) can mimic a wide complex ventricular tachycardia (figure). Misinterpretation of ECG artifact can have grave consequences, including cardiac catheterization, administration of antiarrhythmics, and placement of automated implantable cardioverter-defibrillators.1 Tremo...