Connecting Radiology | Enabling collaboration and professional development
Implementation of region-of-interest fluoroscopy by using the road mapping mode of a real-time digital radiographic unit.
Rudin S, Bednarek DR, Guterman LR, Hopkins LN, Wakhloo AK, Fletcher LM, Massoumzadeh P.
Department of Radiology, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, USA.
Radiographics. 1995 Nov;15(6):1465-70
In region-of-interest (ROI) fluoroscopy, a filter is used to greatly attenuate the x-ray beam outside the ROI and digital image processing is used to equalize the displayed brightness. The method is applicable to real-time imaging procedures such as vascular interventions for which a high-quality image is essential only over an ROI (eg, near the catheter tip), whereas the noise-degraded periphery may be acceptable for visualizing landmarks. Use of ROI fluoroscopy can greatly reduce radiation exposure to the patient and to staff while image quality in the ROI is maintained or improved. Exposure reduction factors greater than 5 were demonstrated for coil placement in a canine aneurysm model by using standard digital angiographic equipment operating in the road mapping mode. Potential applications for which future work will determine the clinical acceptability of ROI fluoroscopy include many of the highest-dose interventional procedures, in addition to general gastrointestinal fluoroscopy.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Radiology, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, USA.
Radiographics. 1995 Nov;15(6):1465-70
In region-of-interest (ROI) fluoroscopy, a filter is used to greatly attenuate the x-ray beam outside the ROI and digital image processing is used to equalize the displayed brightness. The method is applicable to real-time imaging procedures such as vascular interventions for which a high-quality image is essential only over an ROI (eg, near the catheter tip), whereas the noise-degraded periphery may be acceptable for visualizing landmarks. Use of ROI fluoroscopy can greatly reduce radiation exposure to the patient and to staff while image quality in the ROI is maintained or improved. Exposure reduction factors greater than 5 were demonstrated for coil placement in a canine aneurysm model by using standard digital angiographic equipment operating in the road mapping mode. Potential applications for which future work will determine the clinical acceptability of ROI fluoroscopy include many of the highest-dose interventional procedures, in addition to general gastrointestinal fluoroscopy.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Views: 2
© 2024 Created by radRounds Radiology Network.
Powered by
