The basic working principle is to send radio waves to the human body called a magnetic field and to convert the signals that can be received in response to a computer image.
For examination, the patient is placed in a wide tunnel-like open-ended device. The examination does not cause any pain. There is no known harm to magnetic tissues.
The physical foundations of MR technology are also in the 19th century. Another century was required for health imaging.
It became widespread and used in the late 1980s. The widespread use of clinical use has led to the rapid development of technology. The review for more images in the 1990s will also aim to make them more comfortable, as the 2000s review target during this review.
It is the primary and indispensable imaging method in many branches of medicine. In addition, some operations that could not be done before due to the magnetic field can be made possible by producing suitable materials. One of these, MR paired breast biopsy or marking with wire is applied in our center.
What are the usage areas of MR?
It is the preferred examination method for the diagnosis of many
parts of the body and diseases that may occur in these regions. In
general, it distinguishes diseased and healthy tissues from each
other. The most common areas of use are brain, neck, spinal cord,
all joints, abdominal organs, breast, blood vessels and heart
imaging.
Is MR safe?
The MR device can suddenly move any ferromagnetic objects near it.
This can cause harm to people near the device. Therefore, before the
examination, the patient is asked to remove metallic objects. The
magnetic field can also attract ferrous metals inside the body. It
may cause it to overheat. It is important that patients who carry
such metals in their bodies inform the radiology technician and
doctor before the examination. The magnetic field may disturb
hearing aids, pacemakers, insulin pumps, and some other medical
devices. In patients with a foreign body after a gunshot injury, the
object may cause displacement and heating of the object. Some MR
examinations require the use of a contrast agent called gadolinium.
However, this contrast medium does not contain iodine like other
radiological contrast agents and allergic reaction is extremely
rare. It is recommended that patients with advanced kidney disease
inform their radiology technician and doctor beforehand.
Substances that can harm your health during MRI:
Pacemaker or implantable defibrillator Catheter Aneurysm clip in the head External drug pump (insulin or pain relieving drug pumps) Cochlear (inner ear) implant Neurostimulation system
Things to remove before entering the MRI room:
Bags, purses, credit cards, magnetic stripe cards. Pagers or cell phone. Hearing aids Metal jewelry, watches Pen, paper clips, keys. Hairpins. Metallic clothing.
Objects that do not cause harm during MRI but cause a decrease in image quality when close to the examined area:
Metallic materials used for all kinds of orthopedic purposes.
Piercing Tattoo Eye makeup. Dental fillings.
What are the preliminary preparations required for MR examination?
MR examinations outside of the abdominal area do not require any preparation. Abdominal examinations usually require fasting. Before the examination, the patient is warned once more by the radiology technician about the objects that may pose a health risk inside or outside the body.
Claustrophobia:
Disorders related to claustrophobia can be observed during MRI in 5%
of the patients. This ratio has decreased due to the shorter tunnel
in new devices compared to the old. Claustrophobia can be reduced
with sedative drugs before the procedure. In addition, since
magnetic resonance has no known harm, it is possible for the patient
to be in the MRI room with his friend..
MR during pregnancy:
Although there is no known harm of MRI in pregnant patients, in
cases where pregnancy or pregnancy is suspected, the radiology
technician or doctor should be warned beforehand. MRI is recommended
during pregnancy only in important cases. Examination can be done
during the breastfeeding period. However, if gadolinium was used
during the examination, it is recommended to stop breastfeeding for
a day.
