Final answer:
The exact radiation dose for a two-minute upper GI fluoroscopic study can vary, but considering the information available, it is estimated to be higher than standard x-ray procedures and could potentially fall within the range of 5 - 10 rads. However, without specific fluoroscopic dose data, this remains a general estimation.
Step-by-step explanation:
The question relates to the amount of radiation exposure a patient receives during a two-minute fluoroscopic upper GI (gastrointestinal) study. Although the specific dose can vary based on equipment and procedure, the provided references suggest that diagnostic doses are generally low due to advancements in technology and methodology. However, an upper GI fluoroscopic study is likely to deliver a higher dose compared to plain radiography.
There is no exact information provided that corresponds to the dose ranges mentioned in the question. However, considering that CT scans can reach about 10 mSv, and other x-ray procedures typically deliver less, a two-minute fluoroscopic exposure might be expected to fall within a range higher than regular diagnostic x-rays but not necessarily as high as those from CT scans.
Since skin entrance exposure from fluoroscopy is referenced, and the higher end for general diagnostic procedures is around 10 mSv, this exposure could potentially be translated into the second range given in the question which is (2) 5 - 10 rads. This is under the assumption that the dose for a typical fluoroscopic study is higher than regular x-rays but not as high as more intensive procedures like CT scans. However, without specific data on fluoroscopy exposure, this estimate remains a general guide rather than a precise value.