WEBVTT

1
00:00:00.000 --> 00:00:06.000
A dimensional grid of luminous spin markers fills the frame. On-screen text: A field sets the scene.. Narration: MRI begins with a strong magnetic field. Original stereo score.

2
00:00:06.000 --> 00:00:12.000
The projected arrows tilt and precess across the field. On-screen text: A pulse changes direction.. Narration: A radiofrequency pulse disturbs the alignment. Original stereo score.

3
00:00:12.000 --> 00:00:18.000
The tilt gradually reduces while a light sweep crosses the array. On-screen text: The return carries a signal.. Narration: Returning signals depend on the surrounding tissue. Original stereo score.

4
00:00:18.000 --> 00:00:24.000
The camera pulls across the aligned field, without depicting a diagnostic scan. On-screen text: Signals become an image.. Narration: These signals help construct an anatomical image. Original stereo score.