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12 Possible Causes for Artefact - Patient Movement, Visual Hallucination

  • Parkinson's Disease

    A total of five scans showed severe artefact due to patient movement preventing the assessment of the presence of nigrosome-1.[doi.org] The clinical constellations of DLB and PDD include progressive cognitive impairment associated with parkinsonism, visual hallucinations, and fluctuations of attention and[ncbi.nlm.nih.gov] DLB/LBD may also cause visual hallucinations (seeing things that aren't there); unpredictable fluctuations in a person's level of attention or alertness; and changes in mood[foxtrialfinder.michaeljfox.org]

  • Depression

    Excessive movement or other artefact meant that three patients were removed from the ASL analyses and four from the RSFC (SI Appendix), leaving sample sizes of 16 (mean age[nature.com] Visual hallucinations (seeing things that aren't there) are less common.[medicinenet.com] Results Nineteen patients with diagnoses of treatment resistant major depression completed pre-treatment and one-day post-treatment fMRI scanning.[nature.com]

  • Progressive Myoclonic Epilepsy Type 7

    Further, some of the original patient imaging data could not be included in the texture analysis because of the suboptimal image quality caused by myoclonic movement artefacts[journals.plos.org] […] transient blindness, simple or complex visual hallucinations.  Myoclonus is often fragmentary, asymmetric, arrhythmic, and progressively disabling. 7.  Presence of optic[slideshare.net] Occipital seizures are characterised by simple visual hallucinations that are sometimes complex. These hallucinations are typical of Lafora disease.[elsevier.es]

  • Dissociative Identity Disorder

    The data of three actors and one patient were excluded due to huge movement artefacts and low signal quality.[ncbi.nlm.nih.gov] Psychiatric symptoms consisted of three components: visual hallucinations and delusions as a psychological defense against the anxiety of a transplant rejection; appearance[ncbi.nlm.nih.gov] hallucinations.[ncbi.nlm.nih.gov]

  • Psilocybine

    Excessive movement or other artefact meant that three patients were removed from the ASL analyses and four from the RSFC (SI Appendix), leaving sample sizes of 16 (mean age[dx.doi.org] In addition, although visual hallucinations are more common, auditory hallucinations can also occur.[sites.google.com] […] and true visual hallucinations, and alterations of body image were reported by the subjects. 4.[doi.org]

  • Teratoma

    New modern devices (helical and multisclice devices) allow very thin jointive slices, with minimal patient irradiation, performed in a short time thus eliminating artefacts[cology4u.blogspot.com] Subsequently she developed psychosis with visual hallucinations, delirium, fluctuating levels of consciousness, and epileptic seizures as well as dysautonomia with bradycardia[nn.neurology.org] […] due to respiratory movement which decrease the size of detectable pathological images.[cology4u.blogspot.com]

  • Neurodegeneration with Brain Iron Accumulation

    It was possible to perform T2* in only 3 cases (patients 2, 3 and 4) due to interference from metallic dental devices present in 2 patients and movement artefacts in one patient[haematologica.org] hallucinations, oculogyric crisis Generalized brain atrophy, increased iron in the caudate and lenticular nuclei, but increased iron is not always present Woodhouse-Sakati[ojrd.biomedcentral.com] hallucinations, and optic atrophy.[ncbi.nlm.nih.gov]

  • Non-epileptic Convulsion

    The movement of other persons around the patient (which usually cannot be completely avoided in the ICU) can generate artefacts, usually of capacitive or electrostatic origin[ncbi.nlm.nih.gov] The seizures began with mental confusion, vigorous muscle contraction, assuming opisthotonic position, self-aggression, intense screaming, crying, upward stare, visual hallucinations[omicsonline.org] By contrast, epileptic visual hallucinations are unformed or circular (but not zigzags), multicoloured, and often confined to one hemi-field.[jnnp.bmj.com]

  • Progressive Myoclonic Epilepsy Type 1

    Further, some of the original patient imaging data could not be included in the texture analysis because of the suboptimal image quality caused by myoclonic movement artefacts[journals.plos.org] It is characterized by myoclonus, tonic–clonic seizures, visual hallucinations, intellectual decline and progressive neurologic deterioration [ 5 ].[pubs.sciepub.com] Occipital seizures areed by simple visual hallucinations that are some-plex.[docslide.net]

  • Frontal Lobe Epilepsy

    artefact.[academic.oup.com] In rare cases, a child may have complex visual hallucinations, such as seeing a face. The child’s eyes and head may turn to one side.[aboutkidshealth.ca] […] the cases: tachycardia (88 cases), sustained tachypnoea (40 cases) and irregular respiratory rhythm (37 cases) appeared synchronously with seizure onset or preceding the movement[academic.oup.com]

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