• Your Upcoming CT Scan for Your Sinuses

    If you are suffering from chronic sinus infections and bloody noses, or if your doctor thinks you could have an injury, structural defect, or illness affecting your sinuses, he or she may refer you for a CT scan in San Antonio of your sinuses. If you’ve never had this kind of medical imaging test before, you may be wondering what to expect. Here is what you need to know.

    Woman Getting Into MRI Machine

    Preparing for Your Scan

    In some cases, it may not be necessary to do anything to prepare for the scan. If the imaging center will be using contrast dye for your scan, you may be asked to avoid eating or drinking anything for a set period of time. Be sure to verify with the imaging center before the day of your scan, to avoid any delays. If you have had an allergic reaction to contrast dye in the past or have a shellfish allergy, you should also let the imaging center know, as you may need to take a medication to prevent any potential reaction from occurring. You may also need to take precautions or avoid contrast if you have kidney problems or if you take the medication metformin.

    During the Scan

    If you are receiving contrast dye, it will be injected via a vein in your arm through an IV. You may feel a pinch from the needle. The contrast can cause a metallic taste in your mouth and may sting for a few seconds. For the scan, your radiologist will position you on a table, which is then moved into the scanner machine. The scanner will use X-ray beams to take images of your sinuses. The scan takes about 30 seconds, and you will need to be as still as possible to avoid blurry images.

    After the Scan

    Once the scan is complete, you can resume your normal activities right away. You should not have any side effects from the scan. The physician who ordered the test will contact you with the results when they are available.

  • Preparing for a PET or a PET-CT Scan

    PET scans and PET-CT scans are used for a number of reasons, most frequently to diagnose cancer and evaluate the effectiveness of cancer treatments. If you’ve been referred to an imaging center in San Antonio for a PET scan, this video will give you information about how to prepare and what to expect.

    The medical imaging center will advise you whether you need to avoid eating or drinking before your scan. Be prepared to be at the imaging center for a few hours, as you must wait for the tracer used during the scan to work its way through your body. The scan is painless, but you will need to be still for the test, which can take up to an hour.

  • A Quick Look at PET Scans

    Imaging centers in San Antonio can perform PET scans to detect cancer, and monitor its progression or treatment. This medical imaging test can also allow doctors to monitor blood flow to the heart. When you watch this video, you’ll see a simple animation that explains the technology behind PET scans.

    PET scans, or positron emission tomography tests, involve the introduction of radioactive tracers into the body. These tracers bind to certain sugars or proteins. The radioactive isotope produces positrons. As these positrons interact with electrons, both of these particles are destroyed and 2 photons are released. The PET scanner detects the photons and uses advanced software to create 3D images with this information.

  • CT Scan Technology

    If your doctor refers you for a CT scan in San Antonio , you may be wondering what to expect. This medical imaging test can be useful in diagnosing a number of bone and soft tissue issues and may also be used to track the effectiveness of a treatment you are already receiving.

    Watch this video to learn more about CT scan technology. CTs use the same technology as X-rays, but rather than taking an image from one direction, they create cross-sectional images. During a CT, the staff at the imaging center will position you on a table so that the X-ray beam can effectively reach the part of the body being evaluated, and the table will slide into a tube that lets the beam move in a circle, taking images from a variety of angles. Generally, the entire process takes about 30 minutes.

  • A Patient’s Guide to PET/CT Scans

    A PET/CT scan is a combined test that involves a positron emission tomography (PET) scan and a computed tomography (CT) scan. A PET scan is a nuclear medicine test, which means it uses radioactive tracers. A CT scan uses X-rays to produce internal images of the body. If you have any questions or concerns about undergoing a PET/CT scan, a radiology specialist at Concord Imaging Center in San Antonio will be happy to discuss them with you. PET - Scan

    Reasons for PET/CT Scans

    Combined PET and CT scans are helpful for diagnosing a variety of medical problems, including cancer. This exam can aid in the initial diagnosis of cancer and in staging cancer, which refers to determining whether the cancer has spread. PET/CT scans can also help doctors evaluate how well cancer treatments are working and whether cancer has returned after treatment. Another common reason for undergoing a PET/CT scan is to evaluate the functioning of the heart. It may be used for assessing the damage inflicted by a heart attack and for planning cardiac surgeries.

    Preparations for PET/CT Scans

    The imaging center will give you directions to follow ahead of your appointment. You may be asked to avoid eating anything and drinking anything that contains calories for a few hours before the appointment. You can drink plain water. If you’re a diabetic, the radiologist may give you different instructions. Your radiologist will need to know if any of the following applies to you:

    • You are pregnant or might be pregnant.
    • You are breastfeeding.
    • You have removable dental work or hearing aids.
    • You’re taking any medications or supplements.
    • You have any allergies, particularly to seafood, iodine, and contrast materials.

    Steps of PET/CT Scans

    When you arrive at the imaging center, you may be asked to change into a hospital gown before lying on an exam table. You’ll receive the radioactive tracer, which may be inhaled, swallowed, or given intravenously. It will take the tracer a while to travel around your body. You’ll be asked to lie quietly during this time. Then, you’ll be positioned in the scanner, where you’ll also need to remain still. It generally takes about 30 minutes to perform a PET and CT scan.

  • The Do’s and Don’ts of PET/CT Scans

    Prepare for PET/CT Scans

    Ahead of your appointment at the imaging center, it’s a good idea to find out if there are any special steps you need to take to prepare. Some exams, such as X-rays, typically require no special preparation. On the other hand, combined PET/CT scans do have several requirements. Always defer to the instructions of the radiologist in San Antonio if they differ from the following do’s and don’ts. CT - Scan

    Do follow the dietary restrictions.

    The day before you go to the imaging center, you’ll need to follow a limited carbohydrate diet if you aren’t diabetic. This means you should limit grain-based foods like bread, pasta, and tortillas. You should also limit potatoes and other starchy vegetables. Avoid sweets entirely, including soda. If you have a morning appointment, you’ll be asked to avoid eating anything after midnight. If you have an appointment scheduled at or afternoon, you can ask the radiologist for additional guidance on dietary restrictions.

    Don’t forget to share your medical information.

    It’s crucial that your radiologist has your full medical history. He or she especially needs to know if you are diabetic, pregnant, possibly pregnant, or breastfeeding. If you are diabetic, you may be asked to have your blood glucose levels as close to 100 mg/dL as possible prior to the test. If your blood sugar is too high, you might have to reschedule the exam.

    Do request a sedative if you think you’ll need it.

    The PET/CT scan requires you to lie on your back and to remain as still as possible for the duration of the scan. If you anticipate having problems meeting this requirement, you should feel free to request an oral sedative. If you do use a sedative, you’ll need a responsible adult to accompany you. You’ll also have to refrain from driving that day.

    Don’t neglect to take prescribed medications.

    If you take prescription medications, you may take them with water only. You should not take over-the-counter medicines like antacids, cough syrups, or cough drops. Avoid mints, candy, and multivitamins.

    Do give plenty of notice for a rescheduling.

    The radioactive tracer required for a PET/CT scan must be specially made shortly before your appointment, since it has a short half-life. If you must reschedule your exam, call the imaging center as soon as possible.

  • A Quick Look at PET Scan Technology

    Positron emission tomography (PET) scanners are based on incredibly complex technology. Before you head over to the radiology center near San Antonio for your PET brain scan , take a few minutes to watch this featured video. It explains that the nuclear medicine technologist will inject a specially prepared, radioactive tracer material into your bloodstream before the test. Then, your exam table will slide into the PET scanner.

    This video explains that the radioactive atoms inside the tracer give off positrons, which are subatomic particles. When a positron strikes an electron, the particles destroy each other and release energy as gamma rays that travel in opposite directions out of the patient. The PET scanner detects the gamma rays and calculates the exact position of the tracer. The results allow the radiologist to examine a precise, 3D image of the bodily structure.

  • What to Expect During Your PET Scan

    Positron emission tomography (PET) scans are sophisticated medical exams that allow radiologists to capture detailed information about the function of the organs and tissues. If you’re expecting an upcoming visit to an imaging center in San Antonio for a PET scan , it’s a good idea to learn a little bit about what you can expect. Additionally, you should call the imaging center ahead of time to find out how you should prepare for your appointment. PET - scan


    You may be asked to avoid strenuous exercise for a couple of days and to avoid eating for a few hours prior to your appointment at the imaging center. You should inform the radiologist about your underlying medical conditions, such as diabetes, prior allergic reactions, recent hospitalizations or illnesses, or claustrophobia. Let the radiology professional know if you’re pregnant, could be pregnant, or are breastfeeding.


    Upon your arrival, you’ll be asked to change into a hospital gown. You’ll receive an injection of a radioactive drug or radiopharmaceutical. Most often, PET scans involve the use of FDG. This is a form of glucose or sugar that is radioactive. The amount of glucose that is used is not sufficient to cause any sort of problems for diabetic patients. The slight pinprick you’ll feel when the injection is administered is the only discomfort that occurs during a PET scan.


    After receiving the injection, you’ll be asked to rest for a period of time. This gives the glucose some time to work its way through your body. Then, you’ll be positioned on a padded, moveable exam table. This table slides into the PET scanner. You’ll be asked to remain as still as possible during the test, which typically takes about 30 minutes. Some patients undergo a CT scan combined with a PET scan.


    You can return to your usual activities after you leave the imaging center. The radiopharmaceutical is eliminated from your body relatively quickly, but you’ll be asked to drink plenty of water to help flush it out.

  • CT Scans and MRIs: What’s the Difference?

    CT vs MRI: questions about these two types of medical scans are some of the most common ones heard by medical imaging professionals. Both of these options can be used to diagnose a wide range of injuries, abnormalities, and illnesses in the body, but they work using unique technologies and can provide different results. The time available and the purpose of the scan are two primary factors that lead doctors to order either a CT scan or an MRI. If you have questions about CT scans and MRIs, take a look at this infographic from Concord Imaging in San Antonio, TX . Please feel free to share this information with your family and friends.

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  • Saving Money on Your CT Scan

    When your doctor refers you for medical imaging tests, you may be hesitant to have the procedure because of the expense. Even with your insurance coverage, co-pays and deductibles can make medical imaging a prohibitively expensive process. Fortunately, help is available from Concord Imaging. At our imaging center in San Antonio, we offer CT scans and other imaging tests at a lower cost than other providers. Here is what you need to know.

    At Concord Imaging, we don’t think that price tags should interfere with people’s health. That is why we are proud to offer CT scans at our imaging center at a cost that is lower than that of most hospitals and other medical facilities. In addition to your affordable costs, we offer same-day scheduling, courteous staff support, and the highest-possible quality imaging procedures. When you are referred for medical imaging, from CT scans to MRIs, choose Concord Imaging, so you can get the healthcare you need without the cost compromising your care.

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