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Ies had indicated that ct colonography was accurate and cost-effective, but it was important to confirm these findings in a multi-institution study that involved a larger number of radiologists. buy viagra cheap viagra online Therefore, the national cancer institute (nci), part of the national institutes of health (nih), sponsored the american college of radiology imaging network (acrin) national ct colonography trial, which enrolled more than 2,600 participants at 15 institutions nationwide. buy viagra online cheap viagra dosage daily This trial is the largest multi-institution study to date to compare the accuracy of state-of-the-art ct colonography with standard colonoscopy. buy viagra buy female viagra online uk Participants in the acrin trial had to be at least 50 years of age, already scheduled for a screening colonoscopy, and not have had a colonoscopy in the previous five years. buy generic viagra online usa pharmacy They were recruited for the trial with the assistance of gastroenterologists at each participating institution. buy viagra on line cheap Each participant had ct colonography followed by standard colonoscopy, with 99 percent of them receiving both exams on the same day. canadian generic viagra online Because the participants received both examinations, the findings from ct colonography could be directly compared with those from standard colonoscopy. viagra vs viagra which is cheaper The results showed that ct colonography was highly accurate for the detection of intermediate- and large-size polyps. Viagra e liquid review Ct colonography detected 90 percent of the cancers and precancerous polyps that were 1 centimeter or larger in size. viagra vs viagra which is cheaper Even polyps as small as 5 millimeters could be detected by ct colonography with a high degree of accuracy. price of viagra 36 hour Despite its accuracy and possible benefits, ct colonography has several potential downsides. generic viagra online without prescription One is that any polyps detected during the procedure must be removed during a separate, standard colonoscopy procedure, whereas, with standard colonoscopy, polyps can be removed during the same examination. viagra vs viagra which is cheaper Another is ct colongraphy's ability to produce images of organs outside of the colon, which could lead to findings that need further evaluation. buy cheap viagra Such "extra-colonic" findings could potentially result in the detection of asymptomatic early cancers or other serious problems, but they could also lead to unnecessary tests and surgery. cipla generic viagra reviews Yet another concern relates to the radiation exposure from repeated ct scans. Viagra vs viagra 2012 Additional studies will be needed to determine the relative importance of these issues in relation to the lower cost and improved convenience of virtual colonoscopy. Online apotheke viagra 20mg At present, most insurance compan. arrested for buying viagra online buy viagra online
Date Created: Tue Mar 22 14:49:12 2011