CT fluoroscopy
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CT Fluoroscopyfluoroscopy
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Computed tomography (CT) fluoroscopy combines the conventional advantages of both CT and fluoroscopy, and has an important role in image guided-guided interventions where real time imaging is required.
Historically, fluoroscopy used to bewas the main image guidingguidance tool for interventional radiology procedures. The developments in CT led to it becoming an increasingly used tool in image guided-guided procedures – such as cheste.g. chest biopsies. CT fluoroscopy combines the cross-sectional image targeting provided by CT with the real time imaging, tracking and movement perception of fluoroscopy for interventional procedures. It allows continuous update of images at a fixed position, and is commonly used for CT-Guided-guided biopsies and fluid drainage interventionsdrainages.
Advantages of CT Fluoroscopyfluoroscopy:
-
Overlappingoverlapping structures can be removed,providedproviding accurate spatial information -
Realreal time display of images -
Aconsequent reduction in complications through finer needle control -
Reducedreduced procedure time -
Increasedincreased operator confidence
Technical considerations during CT Fluoroscopyfluoroscopy:
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Videovideo monitor will need to be displayed in the scanning room -
Anan operator panel is required in the scanning room – with controls available for table movement, gantry lift, laser light control and fluoroscopic factors. Exposures will usually be activated using a footswitch -
Involvesinvolves an X-ray tube current of 30-50 mA, compared with conventional fluoroscopy with approximately4mA4 mA, orconventionconventional CT with approximately 150-400 mA -
Needneed for additional beam filtration to decrease patient radiation exposure -
Considerationconsideration for radiation exposure to theproceduralistinterventionalist. -
Multi-slicemultislice machines have finer z-axis resolution, which improves localisation accuracy - CT
Fluoroscopyfluoroscopy requires special techniques for image reconstruction, due to the need for rapid imaging feedback
See also:
-<p><strong>Computed tomography (CT) fluoroscopy</strong> combines the conventional advantages of both <a href="/articles/computed-tomography">CT</a> and fluoroscopy, and has an important role in image guided interventions where real time imaging is required. Historically, fluoroscopy used to be the main image guiding tool for interventional radiology procedures. The developments in CT led to it becoming an increasingly used tool in image guided procedures – such as chest biopsies. CT fluoroscopy combines the cross-sectional image targeting provided by CT with the real time imaging, tracking and movement perception of fluoroscopy for interventional procedures. It allows continuous update of images at a fixed position, and is commonly used for CT-Guided biopsies and fluid drainage interventions.</p><h5>-<strong>Advantages </strong>of CT Fluoroscopy:</h5><ul>-<li>Overlapping structures can be removed, provided accurate spatial information</li>-<li>Real time display of images</li>-<li>A consequent reduction in complications through finer needle control</li>-<li>Reduced procedure time</li>-<li>-<!--[endif]-->Increased operator confidence</li>-</ul><p> </p><h5>-<strong>Technical considerations</strong> during CT Fluoroscopy:</h5><ul>-<li>Video monitor will need to be displayed in the scanning room</li>-<li>An operator panel is required in the scanning room – with controls available for table movement, gantry lift, laser light control and fluoroscopic factors. Exposures will usually be activated using a footswitch</li>-<li>Involves an X-ray tube current of 30-50 mA, compared with conventional fluoroscopy with approximately 4mA, or convention CT with approximately 150-400 mA</li>-<li>Need for additional beam filtration to decrease <a href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">patient radiation exposure</a>- +<p><strong>Computed tomography (CT) fluoroscopy</strong> combines the conventional advantages of both <a href="/articles/computed-tomography">CT</a> and fluoroscopy, and has an important role in image-guided interventions where real time imaging is required.</p><p>Historically, fluoroscopy was the main image guidance tool for interventional radiology procedures. The developments in CT led to it becoming an increasingly used tool in image-guided procedures e.g. chest biopsies. CT fluoroscopy combines the cross-sectional image targeting provided by CT with the real time imaging, tracking and movement perception of fluoroscopy for interventional procedures. It allows continuous update of images at a fixed position, and is commonly used for CT-guided biopsies and fluid drainages.</p><h5>
- +<strong>Advantages </strong>of CT fluoroscopy:</h5><ul>
- +<li>overlapping structures can be removed, providing accurate spatial information</li>
- +<li>real time display of images</li>
- +<li>consequent reduction in complications through finer needle control</li>
- +<li>reduced procedure time</li>
- +<li>increased operator confidence</li>
- +</ul><h5>
- +<strong>Technical considerations</strong> during CT fluoroscopy:</h5><ul>
- +<li>video monitor will need to be displayed in the scanning room</li>
- +<li>an operator panel is required in the scanning room – with controls available for table movement, gantry lift, laser light control and fluoroscopic factors. Exposures will usually be activated using a footswitch</li>
- +<li>involves an X-ray tube current of 30-50 mA, compared with conventional fluoroscopy with approximately 4 mA, or conventional CT with approximately 150-400 mA</li>
- +<li>need for additional beam filtration to decrease <a href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">patient radiation exposure</a>
-<li>Consideration for <a href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">radiation exposure to the proceduralist.</a> </li>-<li>Multi-slice machines have finer z-axis resolution, which improves localisation accuracy</li>-<li>CT Fluoroscopy requires <a href="/articles/image-reconstruction-in-ct-fluoroscopy">special techniques for image reconstruction</a>, due to the need for rapid imaging feedback</li>-</ul><p> </p><h5>See also:</h5><ul>-<li><a title="Image reconstruction in CT Fluoroscopy" href="/articles/image-reconstruction-in-ct-fluoroscopy">Image reconstruction in CT Fluoroscopy</a></li>-<li><a title="Radiation dose considerations in CT Fluoroscopy" href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">Radiation dose considerations in CT Fluoroscopy </a></li>- +<li>consideration for <a href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">radiation exposure to the interventionalist.</a> </li>
- +<li>multislice machines have finer z-axis resolution, which improves localisation accuracy</li>
- +<li>CT fluoroscopy requires <a href="/articles/image-reconstruction-in-ct-fluoroscopy">special techniques for image reconstruction</a>, due to the need for rapid imaging feedback</li>
- +</ul><h5>See also:</h5><ul>
- +<li><a href="/articles/image-reconstruction-in-ct-fluoroscopy">image reconstruction in CT fluoroscopy</a></li>
- +<li><a href="/articles/radiation-dose-considerations-in-ct-fluoroscopy">radiation dose considerations in CT fluoroscopy </a></li>
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