
Frequently Asked Questions
Frequently Asked Questions about X-ray, CT Scan, Ultrasound, & More.
General Questions
What are your office hours?
What is the difference between Interventional Radiology and Diagnostic Radiology?
What is the advantage of undergoing uterine fibroid embolization (UFE) rather than a hysterectomy?
Should I be concerned about the radiation I will be receiving from an X-ray, CT scan, or other diagnostic procedure?
Radiation is a natural part of our environment. Everyday, we receive certain levels of exposure to naturally occurring radiation. The scientific unit of measurement for radiation dose is the millisievert (mSv). The average person in the U.S. receives about 3 mSv per year from radioactive materials in the environment and radiation from outer space. In comparison, a chest X-ray will give off a radiation dose of about 0.1 mSv, a mammogram will give a dose of about 0.7 mSv, and a CT scan of the body will give a dose of 10 mSv.
Our practice takes every precaution possible to limit your exposure to radiation and minimize your risks. Using the most modern equipment and techniques, we are able to give patients a much smaller dose of radiation than was required in the early days of Radiology. The state-of-the-art systems at our practice filter and control x-ray beams to significantly reduce your radiation exposure. Our practice also takes precautions to limit radiation to only the part of the body that is being imaged.
If you are unsure about whether a diagnostic procedure is necessary, visit Radiology Associates of Hawaii. We can review your medical history and help you make an informed decision that is in the best interest of your health.
Will receiving an ultrasound at your Hawaii practice harm my unborn baby?
Is there any specific information I should know about the diagnostic test I am receiving?
Screening:
Please let you doctor know if you have any of the following:
– Cardiac pacemaker or artificial heart valve
– Metal plate, pin, or other metallic implant
– Intrauterine device
– Insulin pump or other infusion pump
– Aneurysm clips
– Previous gunshot wound
– Inner ear implant
Pregnancy:
Please tell the doctor if you are (or may be) pregnant. Your doctor will determine if you can take the MRI test safely.
Medication:
Please check with your doctor to see if you will need to follow any special medication instructions for the day of the test. This includes instructions for any over-the-counter medications you may be taking.
Diet:
Generally, there are no diet restrictions. Please check with your doctor to see if you should follow any special instructions for the day of the test.
Screening:
If you are receiving a CT Scan at our practice, please let your doctor know if you have any of the following:
– Allergies, especially to seafood or iodine related products
– Kidney problems
– Diabetes (or are taking diabetes medication)
– Body weight in excess of 425 pounds
Pregnancy:
Please tell the doctor if you are (or may be) pregnant. We will determine if you can take the CT scan safely at our practice.
Medication:
– Ask your doctor about your medication schedule for the day of the test, especially if you are diabetic or take heart or blood pressure medications.
– Ask your doctor about when you can safely resume each of your medications after the CT Scan is over.
– Ask your doctor about taking over-the-counter medications on the day of the CT Scan.
Diet:
– Some CT scans we administer at our practice do not allow eating or drinking at least eight hours before the scheduled test.
– Ask your doctor about your special diet needs, especially if you are diabetic.
– Ask your doctor what kinds of liquids you can take on the day of the test if you need to take medication.
– Before receiving a CT scan, Hawaii residents should follow any special diet instructions carefully.
Restrictions:
Before receiving an X-ray, please inform our practice if you have any of the following:
– Allergies, especially to seafood or iodine related products
– Body weight in excess of 300 pounds
Pregnancy:
Please tell the doctor if you are (or may be) pregnant. Your doctor will determine if you can safely have an X-ray at our practice.
Medication:
Generally, there are no medication restrictions for X-ray testing. If your doctor gives you special instructions, please follow them carefully.
Diet:
Generally, there are no diet restrictions for X-ray testing at our practice. However, some tests may require that you do not eat or drink anything immediately before testing. Please check with your doctor for special instructions.
Screening:
You will be asked to fill out a history form so we can determine if factors such as the medications you take and your history of allergies could interfere with the test.
Pregnancy:
Please tell the doctor if you are (or may be) pregnant. Your doctor will determine if you can safely have an angiogram.
Medication:
– Ask your doctor about your medication schedule for the day of the test, especially if you are diabetic or take heart or blood pressure medications.
– Ask your doctor about when you can safely resume each of your medications after the angiogram is over.
– Ask your doctor about taking over-the-counter medications on the day of the angiogram.
Diet:
You may be asked to refrain from eating or drinking anywhere from 4 to 8 hours before the test. Please ask your doctor for special instructions.
Screening:
There are no restrictions for ultrasound procedures at our Hawaii practice.
Pregnancy:
There are no restrictions for ultrasound testing.
Medication:
Generally, there are no medication restrictions for ultrasound procedures at our practice.
Diet:
– Generally, there are no diet restrictions for most ultrasound procedures
– For ultrasound tests involving the abdomen or gall bladder, Hawaii residents will be asked to refrain from eating and drinking for at least six to eight hours before the test.
– For some tests, you may be asked to have a full bladder for the test period.
Screening:
Please let your doctor know if any of the following apply to you:
– Age 35 or younger
– Currently breastfeeding
– Taking blood thinners or aspirin (for core breast biopsy procedures)
Pregnancy:
Please tell the doctor if you are (or may be) pregnant. Your doctor will determine if you can safely have a mammogram.
Medication:
Generally, there are no restrictions for mammograms. However, if you are undergoing a core breast biopsy procedure, you may have to temporarily stop taking blood thinners or daily aspirin.
Diet:
Generally there are no diet restrictions for this test.
About Our Services
For Patients
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For Providers
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Doctors
Take control of your health.
Contact our office for further questions.
If you have any further questions about procedures or treatments – such as mammogram, MRI, CT Scan, Ultrasound, or X-ray, please contact us.

Better Health Care is Our Mission
808-748-4700
808-536-3008
1380 Lusitana Street, Suite 1007A
Honolulu, HI 96813