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Updated: Aug 8, 2026
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
Image fusion using an integrated, dual-head coincidence camera with X-ray tube-based attenuation maps
J A Patton1, D Delbeke, M P Sandler
1Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, Tennessee 37232-2675, USA.
Unlabelled:
The purpose of this study was to characterize a dual-head gamma camera capable of FDG imaging using coincidence detection and equipped with an integrated x-ray transmission system for attenuation correction, anatomic mapping, and image fusion.
Methods:
Radiation dose (425 mrads skin dose) and tissue contrast (0.7% deviation from expected values) were assessed for the x-ray system. Registration of transmission and emission scans was validated using a hot sphere phantom and was verified in selected patient studies.
Results:
Fusion of anatomic maps and FDG images allowed precise anatomic localization of lesions identified using dual-head coincidence imaging.
Conclusion:
The combined approach of x-ray attenuation, anatomic mapping, and image fusion with scintigraphic studies provides a new diagnostic tool for nuclear medicine and fertile ground for future research.
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