Skip to main page content home current archive collections 中国 (abstracts) radiology select radiographics rsna. Org search go advanced search user name password sign in intraobserver and interobserver variability of mr imaging- and ct-derived prostate volumes after transperineal interstitial permanent prostate brachytherapy. D f dubois , b r prestidge , l a hotchkiss , j j prete and w s bice, jr department of radiation oncology service, wilford hall medical center, lackland afb, tx 78236-5300, usa. buy viagra canada Abstract purpose: to evaluate the relative accuracy and precision of magnetic resonance (mr) imaging and computed tomography (ct) in the assessment of postimplantation prostate volume by determining intraobserver, interobserver, and intermodality variations. viagra cost 2.5 mg Materials and methods: ct and mr images of 41 consecutive patients, after transperineal interstitial permanent prostate brachytherapy, were evaluated by two physicians to determine interobserver and intermodality variability in prostate volume measurements. viagra canada Repeat evaluation in five randomly selected patients was used to determine intraobserver variability. Results: observer 1 versus 2 ct-determined mean prostate volume difference was statistically significant (-8. 5 cm3 +/- 9. 74 [standard deviation], p <. 001); observer 1 versus 2 mr-determined mean prostate volume difference was not significant (1. 9 cm3 +/- 11. 7, p =. viagra no prescription 492). Ct intraobserver range of dimensional errors was 3. 5 and 11. 4 times that of mr imaging. prescription needed generic viagra Observer 1 ct and mr volumes were significantly different (p =. buy viagra cheap 001); observer 2 ct and mr volumes were not significantly different (p =. 079). Conclusion: with both ct and mr imaging, variation is less when evaluations are conducted by one observer. can buy viagra over counter london Variation in one observer may be further reduced by using mr imaging in place of ct. viagra without a doctor prescription Citeulike connotea delicious digg facebook google+ twitter what's this? ⫠previous | next article ⻠table of contents this article june 1998 radiology, 207, 785-789. can buy viagra over counter london ⻠abstract full text (pdf) services email this article to a friend alert me when this article is cited alert me if a correction is posted alert me when eletters are published similar articles in this journal similar articles in web of science similar articles in pubmed download to citation manager rights and permissions responses submit a response no responses published citing articles load citing article information citing articles via web of science citing articles via google scholar google scholar articles by dubois, d. F. Articles by bice, w. S. Search for related content pubmed pubmed citation articles by dubois, d. F. Articles b. buy viagra

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