Session Time: 12:30pm-2:00pm Location: Exhibit Hall located in Hall B, Level 2 Objective: Using changes of perpendicular displacement in digital spiral drawing to evaluate the handwriting severity in essential tremor patients. Background: Essential tremor patients usually have prominent kinetic tremor, especially when handwriting or holding cups.

Neurologists used spiral drawing analysis for severity evaluation subjectively, but sometimes have difficulty in rating subtle changes in those drawings. The changes of perpendicular displacement to center of the spiral drawing under each unit of angle (dr/dθ) could be an indicator for objectively representing tremor severity. Methods: Ten essential tremor patients were recruited for digitized spiral drawing test. Each drawing was evaluated blindly by a movement disorder specialist with visual rating scale (VRS). All the patients were also rated with Fahn-Tolosa-Marin tremor scale (F-T-M scale) to define the total tremor severity.

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Fahn Tolosa Marin Tremor Rating Scale Pdf In Vector. Patients with movement disorders are typically diagnosed in a clinic using scales such as the Fahn- Tolosa- Marin Tremor Rating Scale for ET or the Unified Parkinson Disease (UPDRS) rating scale for. PDF On Jan 1, 1988, S. Fahn and others published Clinical Rating Scale for Tremor. Were reported using the Fahn-Tolosa-Marin (FTM) tremor rating scale. Limb, ability to draw and pour liquids (part B) was scored per limb, and functional.

We analyzed correlation between dr/dθ and patient’s clinical scale. Results: The parameter dr/dθ has good correlation to clinical VRS (R=0.8436) and F-T-M scales (R=0.8425). Conclusions: Our findings suggest that dr/dθ in the digitized spiral drawing test can be an object parameter and has good correlation to clinical tremor severity in essential tremor.