The real-time guidance capability of CT fluoroscopy may also be used for other thoracic procedures that are difficult to perform with nonfluoro-scopic CT. For example, we have used CT fluoroscopy to evaluate the extent of a sinus tract in a patient with a draining cutaneous wound by observing the distribution of injected contrast in real time (Fig. 16). Computed tomographic fluoroscopy, because of its real-time capability, may be valuable
Figure 16 A 41-year-old man with a draining sinus tract. Computed tomography fluoroscopic image acquired immediately after contrast injection shows contrast pooling adjacent to the left lateral ribs (arrow). No fistula was identified.
to assess other dynamic processes such as tracheomalacia and sternal instability.
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