Most respondents underestimated radiation doses from high dose imaging: for barium enema 94.7%, barium meal 68.3%, chest CT 57.6%, intravenous pyelography 55.1% and abdominal CT 52.7% (Fig. 1a).
But we don't really know for sure, since the effects of radiation damage typically take many years to appear, and the increase in high-dose imaging has occurred only since 1980.
In one of the three cases with abnormal pachymeningeal enhancement, the disease was evident prospectively only with high-dose imaging.
Most respondents underestimated doses from high-dose imaging, e.g., barium enema (94.7%), chest CT (57.7%) and abdominal CT (52.7%).
Radiologists have a tendency to prefer "good looking" high-dose imaging over still diagnostic but noisier and contrast-reduced imaging.
Soft-tissue targeting (prostate) requires a higher-dose imaging technique, but high-contrast targets, such as bone or metallic fiducial markers, can be accurately visualized at imaging doses as low as 0.1 to 0.5 cGy.
In the field of medical imaging, he has focused on the risk / benefit balance of the higher-dose imaging techniques, particularly computed tomography (CT).
The use of antibodies to deliver toxic agents depends on the efficacy of delivery of the toxic material: when therapy depends on delivering high-dose radioactivity, imaging studies in patients can provide better preclinical testing than the mouse model.
In two of the three cases of abnormal leptomeningeal enhancement the disease was more evident on high-dose than on standard-dose imaging.
The estimates of diagnostic radiation exposure from this study are limited to years following 5-years from initial diagnosis, so many persons will have been exposed to considerably higher doses after considering imaging for initial diagnosis and evaluation and radiotherapy for primary treatment.
