- Do all forms
of radiology use ionizing radiation?
Ionizing radiation refers to energy which, when absorbed by matter,
creates electrically charged particles, or ions. These ions have the
ability to change or mutate the cellular makeup of their surrounding
environment. Not all types of diagnostic tests use this type of energy.
Ultrasounds, also known as sonograms, use high frequency sound waves
while MRI uses magnetic fields and radiofrequency electromagnetic radiation.
These are non-ionizing forms of energy. Radiologists are trained to
use the least amount of ionizing radiation possible and current methods
of testing use low doses. Pregnant women or women who think they may
be pregnant should consult their physician before undergoing a diagnostic
exam using this type of radiation energy.
- What is an open
MRI? Can I request an open MRI?
An open MRI has a weaker magnetic field than a regular MRI, but the
tunnel in which the patient lies while being scanned is much larger
so the patient is less likely to feel claustrophobic. A traditional
MRI is better for some areas of evaluation. If you are thinking about
this alternative option, discuss this with your doctor who will help
you decide which test is best for you.
- Are there any
long-term effects of radiation from a diagnostic test? If I have more
than one done, does the radiation build up over time?
It is impossible to demonstrate long-term deleterious effects from the
low doses used in modern radiology. This does not mean that there are
no risks. No one knows if radiation damage is cumulative.
- Won't I become
sick from having radiologic dye injected into my body? What are the
side effects?
The most common side effects include rashes, heat and/or nausea while
some people develop hives. More serious reactions are rare.
- Why can't I
be put under anesthesia during an angiogram?
Anesthesia or conscious sedation during an angiogram is commonly offered—
medications are given intravenously to relax you and diminish pain.
The use of anesthesia during this procedure is riskier than these established
methods.
- How can I prepare
for getting a mammogram?
Mammograms should be scheduled after your period as natural engorgement
of the breasts during menses may inhibit a more precise diagnostic image.
Deodorant should not be worn since it may also pollute the mammogram.
- What is the
difference between a mammogram and a breast sonogram?
A mammogram is an x-ray exam of the breast used to screen for breast
cancer. A sonogram or ultrasound uses soundwaves to create an internal
image of the breast. A patient may have to undergo both tests for a
more conclusive diagnosis.
- There is a health
van in my neighborhood that does free mammograms. What is the
difference between getting a mammogram on-site and one on this van?
The differences relate only to time and convenience. An on-site mammogram
involves immediate processing of your films. Repeat tests, if necessary,
can be done before you leave. Van films are processed at the end of
the day and if a repeat test is needed, you will have to return to the
van or the radiology department for a follow-up exam. The imaging quality
should be the same.
- Do any of these
procedures harm an unborn baby?
Unless otherwise advised by a physician, x-ray tests should be postponed
until after the baby has been delivered. If a woman has reason to believe
she may be pregnant, she should consult her physician before an x-ray
exam is given.
- Can I bring
friends or family members with me for an MRI?
Yes, patients may bring friends to accompany them to the exam. It is
optional however. For some other tests, such as an angiogram, patients
should bring someone to accompany them home. Patients should be advised
if accompaniment is necessary for their test.
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