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Additional Supporting Information may be found in the online version of this article.

FilenameFormatSizeDescription
mrm24503-sup-0001-SuppMovie1.avi2896KSupporting Information Movie 1. Synchronized audio and video from subject 1 (acquisition 1, table 1) using the bSSFP sequence with 1.6 × 1.6×10.0mm3 spatial and 111ms temporal resolution (see figure 2, top row), while the subject performs the 1 − 5 counting speech task. Images are shown without adaptive averaging (left pane), with 2 (central pane) and 4 (right pane) adaptive averages.
mrm24503-sup-0002-SuppMovie2.avi4182KSupporting Information Movie 2. Synchronized audio and video from subject 1 (acquisition 3, table 1) using the hEPI sequence with 2.0×2.2×10.0mm3 spatial and 39ms temporal resolution (see figure 2, bottom row), while the subject performs the 1 − 5 counting speech task. Images are shown without adaptive averaging (left pane), with 2 (central pane) and 4 (right pane) adaptive averages.
mrm24503-sup-0003-SuppMovie3.avi1742KSupporting Information Movie 3. Synchronized audio and video from subject 3 (acquisition 8, table 1) using a FLASH acquisition with 1.9×1.9×10mm3 spatial and 85ms temporal resolution, while the subject repeated the “my name is anonymous” sentence speech task. Images are shown without adaptive averaging (left pane), with 2 (central pane) and 4 (right pane) adaptive averages. Adaptive averaging performs equally well with the counting and sentence speech tasks.
mrm24503-sup-0004-SuppMovie4.avi12729KSupporting Information Movie 4. Synchronized audio and video from subject 3 demonstrating adaptive averaging applied to a non-gated speech task (see figure 4). Images were acquired using a bSSFP sequence with 1.6×1.6×10.0mm3 spatial and 111ms temporal resolution and are shown without (left pane), with 2 (center pane) and with 4 (right pane) adaptive averages.
mrm24503-sup-0005-SuppMovie5.avi2769KSupporting Information Movie 5. Synchronized audio and video from subject 3 (acquisition 7, table 1) using the FLASH sequence with 1.9×1.9×10.0mm3 spatial and 85ms temporal resolution (see figure 5), comparing the original images with 4 adaptive averages and 4 pseudo-triggered averages.
mrm24503-sup-0006-SuppMovie6.avi6066KSupporting Information Movie 6. Video from subject 6 (acquisition 12, table 1) using the hEPI sequence with 2.0×2.0mm2 in-plane spatial resolution and 6.5mm slice thickness both before (left pane) and after (center pane) adaptive averaging and with a 10mm slice thickness (right pane) (see figure 7). Temporal resolution was 53ms in both cases. The SNR lost by reducing slice thickness from 10mm (SNR: 6.50) to 6.5mm (SNR: 5.02) was more than compensated for when using 4 adaptive averages (SNR: 8.81). Also, with the 10mm but not the 6.5mm slice an artifact is present at the end of the soft palate, particularly when the palate is partially elevated. Separate acquisitions without synchronization were performed for the 6.5mm and 10mm slice thickness and temporal variations in the speech pattern are, therefore, evident. Due to problems with the microphone system at the time of the acquisition no sound is available for this movie.
mrm24503-sup-0007-SuppMovie7.avi3394KSupporting Information Movie 7. Synchronized audio and video in a patient with velopharyngeal insufficiency showing a FLASH acquisition with 1.9×1.9×10mm3 spatial and 95ms temporal resolution performed while the subject repeatedly counted from 1 to 5 (also see figure 8). Images are shown before adaptive averaging (left pane), with 3 (central pane) and 6 adaptive averages (right pane). Despite the artifacts introduced in the tongue by adaptive averaging, the soft palate remains clearly defined with 6 adaptive averages. There is minimal motion of the soft palate and no closure of the velopharyngeal port.

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