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11 Possible Causes for Artefact - Patient Movement, Constipation

  • 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] Thus, some TCAs can produce dry mouth, blurred vision, constipation, and dizziness upon standing.[medicinenet.com] Results Nineteen patients with diagnoses of treatment resistant major depression completed pre-treatment and one-day post-treatment fMRI scanning.[nature.com]

  • Endometriosis

    This reduces imaging time, movement artefacts, is more comfortable for the patient and is easier for workflow coordination.[ncbi.nlm.nih.gov] A 26-year-old nullipara presented with secondary dysmenorrhea, deep dyspareunia, diarrhea, and constipation during menstruation.[ncbi.nlm.nih.gov] This case report is that of a 42-year-old female who presented with a 6-month history of change in bowel habits in favor of increasing constipation.[ncbi.nlm.nih.gov]

  • 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] Constipation affects up to 50% of patients with Parkinson's disease and sigmoid volvulus remains an under recognised complication with mortality rates up to 50%.[ncbi.nlm.nih.gov] The strongest risk factors associated with later PD diagnosis are having a family history of PD or tremor, a history of constipation, and lack of smoking history.[ncbi.nlm.nih.gov]

  • Mesenteric Vein Thrombosis

    In contrast to MRI, CT is usually faster in providing results with fewer artefacts due to patient movement and is available 24 h/day.[karger.com] These patients presented with abdominal pain, constipation, and/or emesis approximately 12 days following surgery.[appliedradiology.com] Symptoms may include any of the following: Abdominal pain, which may get worse after eating and over time Bloating Constipation Bloody diarrhea Fever Septic shock Lower gastrointestinal[medlineplus.gov]

  • 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] Constipation was the main problem in anorectal functional sequelae for children who had recurrence.[ncbi.nlm.nih.gov] Common symptoms include a swelling, mass or lump that can be felt or seen, constipation or incontinence, leg weakness, abdominal pain, and difficulty breathing etc.[nicklauschildrens.org]

  • 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] Chronic constipation Malnutrition, due to various other complications How is Neurodegeneration with Brain Iron Accumulation Type 1 Treated?[dovemed.com] Autonomic involvement may present early as constipation or cold extremities.[ncbi.nlm.nih.gov]

  • Congenital Spinal Cord Anomaly

    Relative advantages of sonography over MRI include wide and cheap availability, no need for sedation or general anesthesia, and lack of vulnerability to artefacts due to patient[ijri.org] It will also limit chronic constipation or incontinence (leaking of urine). Meet Our Congenital Colorectal Anomalies Team[uchicagokidshospital.org] More than 50 percent of the affected individuals experience bladder and bowel dysfunction, manifested by increased frequency or urgency of urination or constipation.[rarediseases.org]

  • Amyotrophic Lateral Sclerosis Type 10

    The limited spatial resolution and vulnerability for movement artefacts of echo planar imaging (EPI) sequences, which are usually used for DTI measurements, necessitate thorough[touchneurology.com] Drugs also are available to help patients with pain, depression, sleep disturbances, and constipation.[secure.ssa.gov] Doctors can prescribe medications for reducing fatigue, muscle cramps, muscle spasticity, and excessive saliva or phlegm, as well as pain, depression, sleeping problems or constipation[livescience.com]

  • Congenital Absence of Both Lower Leg and Foot

    It does involve the subtraction of two images to produce a difference image, and this has the disadvantage that any leg movements during imaging can introduce artefacts and[journals.plos.org] Some patients Myalgias Jaw Diffuse Exacerbation by warmth: 35% Autonomic symptoms Orthostatic dizziness Palpitations Dry eyes & mouth Other (Few patients): Blurred vision, Constipation[neuromuscular.wustl.edu] Often the unaffected legs of unilateral CTEV patients are assumed to be ‘normal’; although the validity of this presumption has not been previously tested.[journals.plos.org]

  • Congenital Absence of Thigh and Lower Leg with Foot Present

    It does involve the subtraction of two images to produce a difference image, and this has the disadvantage that any leg movements during imaging can introduce artefacts and[journals.plos.org] […] retention is occasionally seen. 77 Once a child is toilet trained, the onset of secondary urinary incontinence, especially in conjunction with fecal incontinence and/or constipation[pediatrics.aappublications.org] Symptoms with a high specificity for hypothyroidism include constipation, cold intolerance, proximal muscle weakness, hair thinning and dry skin.[podiatrytoday.com]

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