Interventional magnetic resonance imaging

Interventional magnetic resonance imaging

Interventional magnetic resonance imaging, also Interventional MRI or IMRI, is the use of magnetic resonance imaging (MRI) to do interventional radiology procedures.

Because of the lack of harmful effects on the patient and the operator, MR is well suited for "interventional radiology", where the images produced by an MRI scanner are used to guide a minimally-invasive procedure intraoperatively and/or interactively.

However, the non-magnetic environment required by the scanner and the strong magnetic radiofrequency and quasi-static fields generated by the scanner hardware require the use of specialized instruments. For example, use of non-magnetic (e.g. Titanium) surgical instruments and MR compatible patient surveillance accessories in addition to the costly MRI scanner increase the cost of IMRI. Often required is the use of an "open bore" magnet, which permits the operating staff better access to patients during the operation. Such open bore magnets are often lower field magnets, typically in the 0.2 tesla range, which decreases their sensitivity and temporal efficiency but also decreases the Radio Frequency power potentially absorbed by the patient during a protracted operation. Higher field magnet systems are beginning to be deployed in intraoperative imaging suites, which can combine high-field MRI with a surgical suite and even CT in a series of interconnected rooms. Specialty high-field interventional MR devices, such as the IMRIS system, can actually bring a high-field magnet to the patient within the operating theatre, permitting the use of standard surgical tools while the magnet is in an adjoining space.

ee also

*Interventional radiology
*Magnetic resonance imaging

External links

* [http://xmr.ucsfmedicalcenter.org/ Interventional MRI] - University of California - San Francisco
* [http://www.oulu.fi/neurosurgery/nru/imri/index.html intraoperative MRI] - University of Oulu - Finland


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Magnetic resonance imaging — MRI redirects here. For other meanings of MRI or Mri, see MRI (disambiguation). Magnetic resonance imaging Intervention Sagittal MR image of the knee ICD 10 PCS B?3?ZZZ …   Wikipedia

  • magnetic resonance imaging — MRI a diagnostic imaging technique based on the emission of electromagnetic waves from the body when the patient is placed in a strong magnetic field and exposed to radiofrequency radiation (see nuclear magnetic resonance). The strength of the… …   The new mediacal dictionary

  • magnetic resonance imaging — (MRI) a diagnostic technique based on analysis of the absorption and transmission of high frequency radio waves by the hydrogen in water molecules and other components of tissues placed in a strong magnetic field (see nuclear magnetic resonance) …   Medical dictionary

  • Magnetic resonance neurography — Bilateral Split Sciatic Nerve Magnetic resonance neurography (MRN) is the direct imaging of nerves in the body by optimizing selectivity for unique MRI water properties of nerves. It is a modification of magnetic resonance imaging. This technique …   Wikipedia

  • Interventional radiology — (abbreviated IR or sometimes VIR for vascular and interventional radiology) is a subspecialty of radiology in which minimally invasive procedures are performed using image guidance. Some of these procedures are done for purely diagnostic purposes …   Wikipedia

  • Interventional radiology — Interventional radiologists employ image guidance methods to gain access to the deep interstices of most organs and organ systems. Through a galaxy of techniques, they can treat certain conditions percutaneously (through the skin) that might… …   Medical dictionary

  • imaging — Production of a clinical image using x rays, ultrasound, computed tomography, magnetic resonance, radionuclide scanning, and thermography; especially, cross sectional i., such as ultrasonography, CT, or MRI. See …   Medical dictionary

  • interventional radiology — the performance of therapeutic or diagnostic procedures under the control of an appropriate imaging technique. Guidance is commonly by X ray fluoroscopy, ultrasound, or computerized tomography, and recently also by magnetic resonance imaging.… …   The new mediacal dictionary

  • imaging — n. (in radiology) the production of images of organs or tissues by a range of techniques. These images are used by physicians in diagnosis and in monitoring the effects of treatment. They can also be used to guide interventional radiology… …   The new mediacal dictionary

  • real-time imaging — the rapid acquisition and manipulation of ultrasound information from a scanning probe by electronic circuits to enable images to be produced on TV screens almost instantaneously. The operator can place the scanning probe accurately on the region …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”