What is the effect of IV contrast on dosimetry for thoracic RT planning?  

If a non-contrast CT is not performed at CT simulation or otherwise not useable, can you plan on the contrast CT or must you re-simulate for cancers near the heart (e.g., esophageal)? Is it acceptable/advisable to substitute normal vessel density in the areas of contrast?



Answer from: Radiation Oncologist at Academic Institution
Comments
Radiation Oncologist at Sletten Center Radiation Therapy
Years ago, a similar study was published with simi...
Radiation Oncologist at Beaumont Health System
I imagine that there is even less effect with VMAT...
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