Are sternal wires safe in an MRI?
Some of these are not MR compatible. Wires in the Chest from Heart Surgery – Although sternal wires are no problem during an MRI scan, sometimes cardiac pacing wires are left in place after heart bypass surgery.
Although most surgical staples are made of titanium, stainless steel is more often used in some skin staples and clips. Titanium produces less reaction with the immune system and, being non-ferrous, does not interfere significantly with MRI scanners, although some imaging artifacts may result.
- Staples are considered faster and easier to use than sutures. However, there is suggestion that staples are more likely to cause infection and may also be more expensive. For hip surgery only, the risk of developing a wound infection was four times greater after staple closure than suture closure.
- Depending on the condition of the healed incision, use saline, an antiseptic such as alcohol, or sterile swabs to remove any debris or dried fluids from the wound. Slide the lower part of a staple remover under the middle of the staple. Begin at one end of the healed incision.
- The skin stapler is a sterile, single patient use instrument designed to deliver rectangular, stainless steel staples for routine wound closure.
Fasting – before undergoing a pelvic or abdominal MRI scan, you will be advised not to eat or drink for at least five hours before the procedure. In most other cases, it is usually not necessary to avoid food or drink prior to the scan. However, be advised by your doctor.
- The radiologist compares the size and distributions of these bright and dark areas to determine whether a tissue is healthy. Head and neck (Fig. 1). MRI can be used to detect brain tumors, traumatic brain injury, developmental anomalies, multiple sclerosis, stroke, dementia, infection, and the causes of headache.
- Unlike CT scans, which use X-rays, MRI scans use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures. Differences between normal and abnormal tissue is often clearer on an MRI image than a CT.
- MRI for colorectal cancer. A pelvic MRI may help doctors stage rectal cancer. MRIs use strong magnetic fields and radio waves to produce exceptionally detailed images. These tests also allow for greater soft-tissue contrast than a CT scan.
However, there are some instances where an MRI scan may not be recommended, because the strong magnets used during the scan can affect any metal implants or fragments in your body. Before having an MRI scan, you should tell medical staff if: you think you have any metal in your body.
- Today, most metal implants, including orthopedic prostheses and dental implants, are made with MRI-safe metals such as titanium. While all of these implants can distort the MRI image if near the body part being scanned, they will usually do not cause problems that an experienced technician can't overcome.
- MRI complications. There have been reports of people with tattoos or permanent makeup who experienced swelling or burning in the affected areas when they underwent magnetic resonance imaging (MRI). Instead of avoiding an MRI, individuals who have tattoos or permanent makeup should inform the radiologist or technician.
- Wear comfortable, loose-fitting clothing to your exam. You may be given a gown to wear during the scan. Metal objects including jewelry, eyeglasses, dentures and hairpins may affect the CT images and should be left at home or removed prior to your exam.
Updated: 27th September 2018