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МРТ и томография главная /  МРТ после аортокоронарного шунтирования /  Общие сведения о МРТ



МРТ после аортокоронарного шунтирования




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В большинстве случаев МРТ можно делать после аорто-коронарного шунтирования: металлические скобки на грудине не являются помехой для проведения МРТ.

Однако в ряде случаев после АКШ оставляют электроды для стимуляции сердца (используются во время операции). С такими электродами МРТ делать нельзя. Для исключения наличия электродов делается стандартный рентген грудной клетки.

Подробная статья об МРТ после АКШ на английском языке

ОТВЕТ НА ВОПРОС, ЧТО ДЕЛАТь, КОГДА В ТЕЛЕ ИМЕЮТСЯ ИМПЛАНТАТЫ.



Below is a listing of many of the common metal implants and their MR compatibility.


Metal Objects



When preparing for your scan, it is important to take safety precautions. Specifically, remember to remove all metal objects. Most metal removable items are not compatible with MRI scanning. Most surgically implanted metal objects are ok to be scanned, although we do need to know about them in advance as we screen for and document every metal implant for your safety.


Before your scan, a technologist will talk with you in a private area and give you a locker to store your personal belongings. You will need to remove any metallic objects because they can both interfere with the MR images and could lead to injury if brought within the magnetic field. You may be asked to remove glasses, hairpins, clothing with metal zippers, hooks or snaps, non-permanent dentures, hearing aids, and some types of prosthetic devices. It‘s best to leave jewelry at home; however, we do provide locked areas to store your belongings.

Below is a listing of many of the common metal implants and their MR compatibility:

Aneurysm Clips - Most experts agree that patients who have had surgery for a brain aneurysm should never have an MR study. The clips used for brain aneurysms (even modern clips) may react to the magnetic pull. Other aneurysm clips are ok to be scanned, just not the ones in the brain.



Back Brace - This must be taken off prior to the MR scan.


Cardiac Bypass Surgery - Sometimes cardiac pacing wires are left in place after heart bypass surgery. It is very important for us to know if these wires are present because they can cause you injury if certain types of MRI scans are being done. Pacing wire presence can be determined by having a recent chest x-ray reviewed. When you pre-register let us know if you‘ve had heart surgery, and you will be informed if a chest x-ray review is needed.



Contact Lenses - It is okay to wear contact lenses if you can lie comfortably with your eyes closed.



Dental Work - This may cause artifact, but is safe for scanning. However, if you have an unusual amount of dental hardware and we are doing a scan of the head some of the pictures may be affected. Dentures may need to be taken out for certain studies and you will be provided with a cup to put them in. Caps, crowns, pins, permanent wires, etc. can be scanned with no problem.



Eye and Ear Surgeries - If you have had any eye or ear surgery, please notify the pre-registration secretary at the MRI Center. There are certain eye/ear surgeries in which a metal implant is used and may cause harm to the patient, although most are okay. We may need to get the operative report or talk to the surgeon‘s office. In some cases, an X-ray can identify metal implants if there is a question about this.



Eye Shadow - Some eye makeup has a metallic base and may cause your eyelids to flutter. Therefore, if you are having a study done of your head, please remove all eye makeup before coming to the MRI Center.



Facial Reconstruction - Any facial reconstruction, especially near the eyes, needs to be followed up on by one of our staff. We may need to get an operative report or a skull x-ray to verify the location of any implants or wires.

Groshong Catheter - This is usually okay to scan; however, some of them have a small metal clip, which needs to be removed prior to the scan.



Halo - This is a type of neck immobilizer, which may or may not be MR compatible, so it is important to tell the scheduler and/or pre-registration secretary if you are in a halo.



Hearing Aids - These must be taken off during all scanning procedures.



Heart Valves - Some heart valves are okay to scan; but some are not. Sometimes cardiac pacing wires are left in place after heart bypass surgery. It is very important for us to know if these wires are present because they can cause you injury if certain types of MRI scans are being done. Pacing wire presence can be determined by having a recent chest x-ray reviewed. When you pre-register let us know if you‘ve had heart surgery, and you will be informed if a chest x-ray review is needed.



Hernia Mesh - This is okay and will not cause you any harm, even if it is metal.


Embedded Wires/Stimulators/Batteries - These are put in for muscle problems, among other things. They can NEVER be scanned and could cause bodily harm.



Implanted Electrodes, Shunts, Pumps, or Other Electrical Devices - Some of these are okay and some are not. Please be sure to tell the pre-registration secretary if you have one of these and we will confirm whether it is safe for you to have the scan.


Intrauterine Device (IUD) - Currently there are no known contraindications for an IUD.

Joint Replacement - If you have a hip replacement, knee replacement, etc., this is usually okay to scan. If the joint replaced is the joint being scanned, we do need the operative report because the images may not be optimal if there is a metal implant. However, it will not harm you to be scanned.

Leg Brace or Prosthesis - These need to be taken off prior to the MR study.


Lens Implants - Orbital lens implants are not a problem.


Limb Replacement - If a patient has a removable prosthetic device, it will need to be removed during the scan since most of them have metal components. If it is permanent, it will not cause you harm, however we should still be made aware of it.


Medication Patches - Medication patches, such as nitroglycerin, birth control, or nicotine patches must be removed prior to scanning because some of them have a small metal wire inside and could cause injury.


Nitroglycerin Patch - We can NEVER scan a patient with a nitroglycerin patch

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