Open MRI is the scanning option of choice for most patients. It is more comfortable, spacious and quiet than traditional enclosed bore units. Hector Hernandez R.T. (R) MR is the owner of Daystar Open MRI and has been in the Radiology field for over 30+years. Call today to Schedule your MRI exam. Daystar Open MRI is conveniently located right off the expressway in McAllen.