Abstract
Zero TE MR imaging is a novel technique that achieves a near-zero time interval between radiofrequency excitation and data acquisition, enabling visualization of short-T2 materials such as cortical bone. Zero TE offers a promising radiation-free alternative to CT with rapid, high-resolution, silent, and artifact-resistant imaging, as well as the potential for "pseudoCT" reconstructions. In this report, we will discuss our preliminary experience with zero TE, including technical principles and a clinical case series demonstrating emerging applications in neuroradiology.
Highlights
Most scan time is targeted toward data acquisition, with minimal dead time occurring during the RF pulse and a single gradient step (On-line Fig 1).[3,4,5,6]
The applicability of Zero TE (ZTE) for bone imaging has been successfully demonstrated in small clinical case series and ex vivo studies of the cranial vault, face, jaw, and spine
Our hypothesis is that ZTE is equivalent to CT for neuroanatomic landmark visualization across the life span, enables imaging diagnosis across a variety of pathologies, and permits effective anatomic modeling and interventional planning
Summary
In ZTE, readout gradients are turned on before the RF pulse so that data acquisition can begin immediately after excitation. The itions were obtained in each patient, for a total imaging time of RF excitation is immediately followed by a 3D data acquisition. CT and ZTE equivalently demonstrated a leptomeningeal cyst or growing fracture of the right parietal calvaria with underlying parenchymal encephalomalacia This presumably represented expansion of a remote skull fracture with dural injury and chronic CSF pulsations (On-line Fig 9). ZTE was performed and confirmed anatomic realignment of fracture fragments by fixating hardware, with minimal image artifacts (On-line Fig 15)
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