Visualization of spirography-based objective measures in Parkinson's disease

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Visualization of spirography-based objective measures in Parkinson's disease

Memedi, Mevludin, 1983- (author): Högskolan Dalarna,Datateknik

Jusufi, Ilir (author): Computer Science, University of California, Davis, USA,Linneuniversitetet

Nyholm, Dag (author): Neuroscience, Neurology, Uppsala University, Uppsala, Sweden

(creator_code:org_t)

2014-06-06
2014
English.
Series: Movement Disorders, 0885-3185 1531-8257
In: Movement Disorders Supplement. - : Wiley-Blackwell. - 0885-3185. ; , s. S187-S189

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Conference paper (other academic/artistic)

Abstract Subject headings

Objective: To investigate whether advanced visualizations of spirography-based objective measures are useful in differentiating motor complications among Parkinson’s disease (PD) patients.Background: Sixty-five patients diagnosed with advanced PD have utilized a telemetry test battery, implemented on a touch screen handheld computer, in a telemedicine setting. On each test occasion, they were asked to perform repeated and time-stamped assessments of spiral drawing performance by tracing a pre-drawn Archimedes spiral. The test battery was also used by 10 healthy elderly (HE) subjects.Methods: A web-based framework was developed to visualize the performance during spirography of both patients and HE subjects to a clinician (DN). The performance was depicted by animating the spiral drawings (Fig 1). In addition, the framework displayed two time series views for representing drawing speed (blue line) and displacement from the ideal trajectory (orange line). The views are coordinated and linked i.e. user interactions in one of the views will be reflected in other views. For instance, when the user points in one of the pixels in spiral view, the circle size of the underlying pixel increases and a vertical line appears in the time series views to depict the corresponding position. Fig 1 shows single randomly selected spirals per each subject group: A) a PD patient in Dyskinesia state, B) a HE subject, and C) a PD patient in Off state.Results: The clinician recognized Dyskinesia symptoms as movements made with high speed, smooth/gradual spatial displacements, and a small amount of hesitation (Fig 1A). Similarly, Off symptoms were associated with low speed, sharp/abrupt spatial displacements, and a large amount of hesitation (Fig 1C). In contrast, the spiral drawn by a HE subject (Fig 1B) was associated with unchanging levels of kinematic features i.e. drawing speed, spatial displacements and hesitation over time.Conclusions: Visualizing spirography-based objective measures enables identification of trends and patterns of motor dysfunctions at the patient’s individual level. Dynamic access of visualized motor tests may be useful during the evaluation of therapy-related complications such as under- and over-medications. This will assist during individualized optimization of therapies, enabling patients to spend more time in the On state with a minimum of Off and dyskinetic states.

Subject headings

SAMHÄLLSVETENSKAP -- Medie- och kommunikationsvetenskap -- Systemvetenskap, informationssystem och informatik med samhällsvetenskaplig inriktning (hsv//swe)
SOCIAL SCIENCES -- Media and Communications -- Information Systems, Social aspects (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Neurologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Neurology (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Datorsystem (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Computer Systems (hsv//eng)

Keyword

data visualization
objective measures
animation
time series
Parkinson's disease
spirography
motor dysfunctions
Computer and Information Sciences Computer Science
PAULINA - Uppföljning av Parkinsonsymptom från hemmet

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vet (subject category)
kon (subject category)

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By the author/editor: Memedi, Mevludin ...; Jusufi, Ilir; Nyholm, Dag

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SOCIAL SCIENCES: SOCIAL SCIENCES; and Media and Commun ...; and Information Syst ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Neurology

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Computer Systems

Parts in the series: Movement Disorde ...

Articles in the publication: Movement Disorde ...

By the university: Örebro University; Linnaeus University; Högskolan Dalarna; Blekinge Institute of Technology

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