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Clinical application of region-of-interest techniques to radiologic imaging.
Rudin S, Bednarek DR, Kezerashvili M, Granger WE, Serghany JE, Guterman LR, Hopkins LN, Szymanski B, Loftus RJ.
Departments of Biophysical Sciences, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, USA.
Radiographics. 1996 Jul;16(4):895-902
In region-of-interest (ROI) imaging, a filter with a central aperture is used to substantially reduce patient dose outside of an ROI while maintaining or improving image quality within the ROI. The benefits of ROI imaging can be realized by using standard imaging equipment. ROI imaging has been clinically applied to gastrointestinal radiology and interventional procedures. In gastrointestinal procedures, ROI fluoroscopy without image processing can be used without adversely affecting the procedure or interfering with spot radiography. ROI fluoroscopy can reduce the dose-area product by a factor of 1.7 for gastrointestinal procedures. In interventional neuroradiologic procedures, equalized display brightness is achieved with road mapping during fluoroscopy and with standard digital subtraction techniques during angiography. In interventional radiology, ROI filters can generally reduce the patient skin dose to levels below the threshold for skin effects, thus eliminating these effects across more than 85% of the field of view.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Departments of Biophysical Sciences, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, USA.
Radiographics. 1996 Jul;16(4):895-902
In region-of-interest (ROI) imaging, a filter with a central aperture is used to substantially reduce patient dose outside of an ROI while maintaining or improving image quality within the ROI. The benefits of ROI imaging can be realized by using standard imaging equipment. ROI imaging has been clinically applied to gastrointestinal radiology and interventional procedures. In gastrointestinal procedures, ROI fluoroscopy without image processing can be used without adversely affecting the procedure or interfering with spot radiography. ROI fluoroscopy can reduce the dose-area product by a factor of 1.7 for gastrointestinal procedures. In interventional neuroradiologic procedures, equalized display brightness is achieved with road mapping during fluoroscopy and with standard digital subtraction techniques during angiography. In interventional radiology, ROI filters can generally reduce the patient skin dose to levels below the threshold for skin effects, thus eliminating these effects across more than 85% of the field of view.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
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