San Antonio—Downtown

(210) 572-1211 · 818 Lexington Avenue, San Antonio, TX  78212
Monday – Friday: 7:30am – 10:00pm · Saturday: 8:00am – 5:00pm

For scheduling & questions: (210) 572-1211 • To send us a fax: (210) 653-9843 • E-mail us

Welcome to American Health Imaging—Downtown

Quality Care, Tailored to Your Needs

When you’re concerned about your health, every detail matters – and every day counts. At American Health Imaging, our promise to you is to deliver clear, accurate, and reliable results on a schedule that meets your needs and time constraints.

American Health Imaging at Lexington formerly known as (SADI – San Antonio Diagnostic Imaging) is conveniently located on the southeast corner of Lexington Avenue and East Maple Street.
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A Safe, Comfortable Patient Experience

We invest in the latest imaging equipment because we put your comfort, safety and goals first. This advanced technology also means we can provide your doctor with clearer images, faster, allowing for sooner diagnosis and treatment. 


Our highly trained radiologists, technologists and patient care coordinators will walk you through your entire imaging appointment. We are also currently taking extra steps to ensure your safety and comfort:


  • You will check in on your phone from your car when you arrive for your appointment. A patient care coordinator will bring any necessary paperwork out to you. 
  • Our staff wears gloves and masks at all times. We will also use disinfectant wipes to open doors for and hand things to you, including any paperwork and insurance cards. 
  • All of our facilities are spacious enough to adhere to social distancing standards.  
  • The patient care coordinator will bring you inside when it is time for your appointment. A sanitized changing area, where you can store your items in a locker and change, if necessary, will be available to you.

Affordable, Accessible, and Worry-Free

Finally, given the financial concerns that often accompany health complications, we pledge to make your imaging as affordable as possible. Our exams cost up to 75% less than equivalent tests at hospitals, we accept most insurance plans, and we offer competitive self-pay rates.

At American Health Imaging, we know you have a choice in imaging providers. We hope to see you soon.

Services Offered

Magnetic resonance imaging (MRI) is a safe, pain-free imaging technique that combines magnets and radio waves to create detailed images of your body’s structures. While x-rays are typically used to view bones and joints, MRI is perfectly suited for organs, muscles and other soft tissues.

What to Expect During Your MRI

Typically lasting 30 to 60 minutes, MRI exams require very little preparation. Your technologist will simply ask you to remove jewelry, belts and other metal objects, and they will help you lie comfortably on a cushioned table. That table will then slide into the circular MRI machine, where you’ll remain for the duration of the exam. As the technologist collects images, they’ll be able to see, hear and speak to you, alleviating any concerns you may have.

Computed tomography (CT) uses a rotating series of x-rays to produce cross-sectional pictures of your body. These pictures appear as “slices” of a specific body part, and they show much more detail than traditional, flat x-rays.

Like MRI, CT is safe, painless and noninvasive. While MRI is most often used to examine muscles, organs and tumors, CT is generally applied to fractures, blood clots and abdominal injuries. In all cases, our skilled radiologists will consult with your doctor to determine which scan will deliver the most accurate and informative results.

What to Expect During Your CT Scan

Even faster than MRI, CT scans take just 15 to 30 minutes. You’ll set aside jewelry, belts and other metal objects, and depending upon the body part being scanned, you may be asked to remove your normal clothing and wear a hospital gown.

Some types of CT scans also require a contrast dye, which may be given as a flavorless drink or quick, painless injection. This dye appears bright white on your final images, helping doctors to differentiate between different types of tissue. If your CT scan does require a contrast dye, your doctor, radiologist or technologist may ask you to fast for a few hours before your exam.

Once you’re ready for the exam, you’ll simply lie on a cushioned table, which will slide your body into the circular CT machine. You’ll be able to communicate with your technologist throughout the exam, and they can help to alleviate any concerns you may have.

One of the safest, most tried-and-true imaging technologies, ultrasound uses sound waves to create images called sonograms. Ultrasound is widely used for observing fetal development in pregnant women, but it may also be used to detect problems in the liver, kidneys and other abdominal organs.

Because ultrasound doesn’t rely on radiation, it’s perfectly safe for both you and your baby. It’s also pain-free and noninvasive, and it doesn’t require the use of contrast dyes or other solutions or injections.

What to Expect During Your Ultrasound Exam

Quick, convenient and easy, ultrasound exams typically last 20 to 40 minutes. Your technologist will conduct the exam with a transducer, a small handheld device that looks like a wand. They’ll apply the transducer to the body part being examined, along with a gel that helps sound waves pass through your skin. Depending upon the nature of your exam, you may be able to see the images during your exam, on a screen connected to the ultrasound device.

Digital radiography is a type of x-ray imaging in which image sensors are used in place of traditional film – much like the difference between film and digital cameras. The images themselves are comparable to traditional x-rays, but digital radiography saves time by avoiding chemical film processing. Just as importantly, digital x-rays require less radiation than traditional x-rays. Like other x-ray techniques, digital radiography is safe, painless and noninvasive.

What to Expect During Your Digital X-Ray

Taking a digital x-ray is much like taking a traditional x-ray, and if you’ve ever broken a bone, you’re likely familiar with the process. A technologist will help you onto an exam table or chair, depending upon the positions required for the image. A plastic plate called a film cassette will be placed directly under or behind the area of the body to be imaged, and you’ll be asked to hold still for a few minutes while the x-ray is being taken. This process will be repeated for additional views, and the whole procedure will likely take 15 minutes or less.

Center Staff

The San Antonio—Downtown center is staffed by trained medical and service professionals.

Veronica Munoz, Operations Manager
Phone: (210) 572-1211

Jaime Zamora, Director of Sales and Marketing
Phone: (210) 572-1211

Patient Forms

We have printable patient medical forms available below for your convenience. Feel free to fill them out on your computer and bring them with you when you come for your appointment. This will facilitate your time and get you back to your day as quickly as possible.