EDEN PRAIRIE, Minn.--(BUSINESS WIRE)--Virtual Radiologic Corporation (NASDAQ:VRAD), a national radiology practice and a leader in the development of radiologist workflow technology, received notice of allowance of a patent by the United States Patent and Trademark Office for several applications within its technology portfolio. The pending patent, titled “Multiple Resource Planning System,” recognizes the rules-based technology vRad uses to receive orders over the internet and automatically assign them to radiologists based on a set of business and clinical rules, including subspecialty training, licensing, credentialing, workload, hospital preferences and other customized parameters.