Filter Type: : 0 Coupons and 2 Deals. All of our courses have been reviewed and approved by the ASRT and meet the ARRT requirement for Category A radiology continuing education credits. We also have Category A+ continuing education credits for the Registered Radiologist Assistant (RRA) as well as Certified Radiology Administrator (CRA) courses.. continuing education courses on sale. SPECIAL SALE - ORDER "IV THERAPEUTICS" FOR $99.50 AND GET ALL YOUR CREDITS IN ONE COURSE.QUANTITIES ARE LIMITED.