You can borrow samples of Russian technical in medical literature including dictionaries from online libraries like this Мир книг or Скачать электронные книги бесплатно .The latter requires registration, though.

Caveat. Bear in mind that you don’t have the right to keep these copies permanently on your HDD and should delete them as soon as you have a feeling that you’ve made acquaintance with the book because any ebook in such libraries is uploaded with the only purpose for the user to make a conscious decision whether she should buy it or not.

Here is an online dictionary that might be usefull to translate medical terms.
Словари@Mail.Ru: Англо-русский словарь.