27 May Exploring the Different Types of MRI Scans Available
Magnetic resonance imaging (MRI) is a diagnostic imaging method that uses a strong magnet and radio waves. It produces detailed images of soft tissues, and it is commonly used to examine joints, the spine, and internal organs. The type of MRI performed depends on the body region being scanned because different clinical questions require different imaging approaches. Here are some different MRI types:
Conventional MRI
Conventional MRI is the standard modality used in many imaging centers and hospitals. During this exam, the patient lies on a table that slides into a tube-shaped scanner. The machine collects images in thin sections, and this gives the radiologist detailed views of the area being studied.
This type can be used for many orthopedic concerns, including knee injuries, shoulder pain, and spinal disc changes. It shows differences among key tissues, and it distinguishes between cartilage and muscle. Because of this, doctors often use conventional MRI when X-rays or physical exams do not provide enough information.
The exam usually requires the patient to stay still for several minutes at a time; movement may blur the images and lead to repeated sequences. The technologist will explain the steps before the scan begins, position the body, and communicate through an intercom during the exam. Conventional MRI machines may make loud tapping or knocking sounds while images are being taken. Some scans take 45 to 60 minutes, though timing varies by body part and imaging protocol.
Open MRI
Open MRI uses a scanner that leaves more space around the patient than a traditional tube-shaped unit. Instead of being fully surrounded by the scanner, the patient is positioned between wider magnetic plates. This layout supports patients with mobility limitations, and it also helps those who feel uncomfortable in confined spaces.
The open design changes the exam experience. It gives the technologist more room to position certain joints and allows easier access for people who have trouble lying flat. Open MRI may be used for orthopedic imaging of the spine, ankle, and wrist. Some images take longer to collect in open units, depending on the magnet strength and the type of scan ordered.
Contrast MRI
Contrast MRI involves the use of a contrast agent, often administered through an IV line in the arm or hand. The contrast material changes how tissues appear on MRI images. It may be ordered when the provider needs more details about:
- Inflammation
- Infection
- Prior surgery
- Tumors
- Blood flow patterns
Many orthopedic MRI exams are performed without contrast, especially for routine exams. When contrast is requested, the imaging staff will review screening questions related to allergies, kidney function, and implanted medical devices. The scan can include images before and after the contrast injection; this helps the radiologist describe changes in tissue appearance. The final report is sent to the ordering provider, who reviews the findings with the patient in the context of symptoms, exam results, and treatment history.
Schedule Orthopedic Imaging
MRI options vary, and the right exam depends on the body part, medical history, and the reason for the scan. If your provider ordered orthopedic imaging, share any implant or safety information with the imaging team before your appointment. Wear comfortable clothing without metal when possible, or plan to change into facility-provided garments. To schedule orthopedic imaging, contact an imaging center today.
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