MRI and 3D imaging of the mimic musculature

MRI and 3D imaging of the mimic musculature - MRI and 3D imaging of the mimic musculature

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON45873

Enrollment

Registered

2017-04-12

Start date

2017-05-20

Completion date

Unknown

Last updated

2024-08-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

geen aandoening, maar lokalisatie en beoordeling van het verloop en de functie van de mimische spieren mimic musculature

Interventions

None listed

Eligibility

Age

18 Years to 99 Years

Inclusion criteria

Inclusion criteria: age between 18 and 40 years

Exclusion criteria

Exclusion criteria: surgery or trauma to the face or orthodontic treatment in the past claustrophobia physically or mentally incapable for MRI

Design outcomes

Primary

Measure	Time frame
1: correct identification of the mimic muscles would be considered to be possible if the average volume of mimic muscle measured on MRI images by three different investigators at three different times differ less than twenty percent.	—

Secondary

Measure	Time frame
2: correct standardization of the positions of the mimic muscles is considered to be possible if the average XYZ-coordinates, representing the origo and insertion of a mimic muscle, determined by three different investigators at three different times differ less than twenty percent. 3: correct superimposition is considered to be possible if the MRI images correspond with the images on the 3D photograph. 4: the movement of the face in centimetres when changing facial expressions. A change is defined as a deviation in position based on a XYZ-coordinate system. 5: the time in minutes a facial expression can be hold unchanged. A change is defined as a deviation in position on a XYZ-coordinate system of more than twenty percent. The computer program 3DMD Vultus can be used to analyse three-dimensional images from MRI and 3D photographs. Identified anatomical landmarks will be registered as coordinates in a XYZ-coordinate system. Changes in corresponding coordinates can indicate a change in for example a position of a muscle or an ability to create facial expressions. A change in the direction of the X-axis corresponds with a movement in a horizontal direction, a change in the direction of the Y-axis corresponds with a movement in a vertical direction and a change in the direction of the Z-axis corresponds with a movement in ventro-dorsal direction. The computer program can also be used to analyse differences between images by superimposition.	—

Measure

Time frame

2: correct standardization of the positions of the mimic muscles is considered to be possible if the average XYZ-coordinates, representing the origo and insertion of a mimic muscle, determined by three different investigators at three different times differ less than twenty percent. 3: correct superimposition is considered to be possible if the MRI images correspond with the images on the 3D photograph. 4: the movement of the face in centimetres when changing facial expressions. A change is defined as a deviation in position based on a XYZ-coordinate system. 5: the time in minutes a facial expression can be hold unchanged. A change is defined as a deviation in position on a XYZ-coordinate system of more than twenty percent. The computer program 3DMD Vultus can be used to analyse three-dimensional images from MRI and 3D photographs. Identified anatomical landmarks will be registered as coordinates in a XYZ-coordinate system. Changes in corresponding coordinates can indicate a change in for example a position of a muscle or an ability to create facial expressions. A change in the direction of the X-axis corresponds with a movement in a horizontal direction, a change in the direction of the Y-axis corresponds with a movement in a vertical direction and a change in the direction of the Z-axis corresponds with a movement in ventro-dorsal direction. The computer program can also be used to analyse differences between images by superimposition.

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Countries

Netherlands

Outcome results