CT Scans


Xoran MiniCatIn Office CT Scans

The Xoran MiniCAT™ is a compact, upright volume computed tomography system designed for high-resolution bone window imaging of the sinuses, temporal bones, and skull base. MiniCAT™ provides immediate access to images resulting in faster diagnosis and treatment.

The Xoran MiniCAT™ scanner is an in-office CT scanner that offers a variety of advantages over traditional scanning. These include high-resolution images with three-dimensional reconstructions. The sinuses, ears, facial bones, temporal bones, and TMJs can be displayed clearly and in various views. Additionally, the CT has significantly lower radiation exposure (1/8th the dose!) than traditional CT scans. With increasing concerns about lifetime radiation exposure, this is a critical advantage over traditional imaging. Patients are able to sit comfortably without having to flex or extend their necks into difficult positions. An in-office CT scan takes only 10-20 seconds depending on the type of scan ordered for the patient.

The data from the scan can be saved to a CD, DVD, or memory stick. The Xoran software makes it easy to print images and reports for patients and requesting physicians. With the Xoran MiniCAT™ we can effectively view the anatomy of the sinuses. The human head contains 4 pairs of sinuses (8 total), which are connected by nasal passages. The frontal sinuses are in the forehead, the maxillary sinuses are behind the cheekbones, the ethmoid sinuses are between the eyes, and the sphenoid sinuses are behind the eyes. Your doctor may order a CT scan of the sinuses for a patient who has chronic sinusitis or allergies in order to properly diagnose and treat the issue with immediate scan results.

For more information about how we do CT scans and our other services including ear neck and throat specialist, Dr. Robert Pettis and more, please call our office at (949) 715-0500. For more information about the Xoran MiniCAT™, please visit www.xorantech.com.


Welcome to OC Ear, Nose, Throat, Head & Neck Surgery.

Leading Specialized Head and Neck Surgeons in Irvine and all of Orange County




We provide comprehensive medical and surgical ear, nose, and throat care for adults and children. Our in-office services include balloon sinuplasty to immediately relieve sinusitis, CT scans of the ears and sinuses, as well as allergy testing and immunotherapy. We also offer complete state-of-the-art hearing evaluations and hearing aid fittings. We perform surgeries at Hoag Hospital in Irvine and Newport Beach, Mission Hospital, CHOC Children’s Hospital, and Long Beach Memorial Hospital.

We focus on individualized care and on developing trusting relationships with our patients. We never rush an appointment and we empower our patients with full understandings of each diagnosis. We look forward to meeting you!


Diagnose and treat all medical ear, nose, and throat concerns

Perform all specialized surgical procedures to address medical head, neck, ear, nose, and throat issues

Conduct all diagnostic and advanced hearing test with individualized hearing and fitting


Schedule an Appointment

Major Insurance Providers Accepted

Please contact our office if you have any questions regarding your insurance plan. 

Advantage Insurance Network
Assurant Health
Blue Cross
Blue Cross Blue Shield
Health Net
Liberty Mutual


Orange Coast ENT Head and Neck Surgery
16100 Sand Canyon Avenue, Suite 230 A
Irvine, CA 92618
Phone: 949-243-7787
Fax: 949-715-0504

Office Hours

Get in touch