Three-dimensional (3D) computed tomography is a widely used technology that visualizes an object's external and internal structure by assembling a series of two-dimensional images taken sequentially across or around it. However, as anyone who has had a medical magnetic resonance imaging scan will recall, this type of 3D reconstruction requires the subject to be motionless throughout the capture process, which can take minutes. Capturing a 3D structure that changes or deforms over time is much more difficult, and existing approaches often yield reconstructions marred by image artifacts and partial surfaces.
![Scanning in the fourth dimension](/sites/default/files/2019-02/Scanning%20in%20the%20fourth%20dimension-2_0.jpg)
Guangming Zang, Ramzi Idoughi and their colleagues, under the leadership of Wolfgang Heidrich at KAUST, have developed a novel four-dimensional imaging method that vastly improves the quality of such space-time tomography for rapidly deforming objects.
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