Multiplanar reconstruction – what is it?
Multiplanar reconstruction is a special image processing technique used in modern radiological examinations such as computed tomography (CT) or magnetic resonance imaging (MRI). The images, which are originally taken in thin slices, are processed on a computer so that they can be viewed from different angles and in different planes.
How does the technique work?
During a CT or MRI scan, many individual cross-sectional images of the body are created, stacked on top of one another like slices. Multiplanar reconstruction makes it possible to convert this image data afterwards so that it can be seen not only in the original plane but also in other planes, such as lengthways, crossways, or at an angle. This means a section of the body can be viewed from the front, from the side, and even from diagonal angles, without the examination needing to be repeated.
The technique uses the image data that has already been recorded and calculates new views from it. This allows structures such as organs, blood vessels, or bones to be assessed much more clearly than if only the original cross-sections were available.
When is multiplanar reconstruction used?
This technique is used whenever a particularly precise view of body structures is needed. This is the case, for example, when assessing bone fractures, tumours, the course of blood vessels, or complex organ structures. Multiplanar reconstruction also provides important additional information when planning operations or minimally invasive procedures.
For complex questions, such as those involving the brain, spine, or joints, the multiplanar view helps to identify and assess changes more accurately. It is also a valuable tool in cancer diagnostics and when looking for areas of inflammation.
What does this mean for the examination?
For the actual examination, multiplanar reconstruction makes no difference. No additional images need to be taken, and the radiation dose remains unchanged. The reconstruction takes place afterwards on the computer and is not noticeable for the person being examined. The images produced allow the radiologist to describe findings more precisely and to respond more directly to the referring doctor's specific question.
What are the benefits of multiplanar reconstruction?
By being able to view image data from different perspectives, many medical questions can be answered more accurately. Hidden changes become easier to see because they can be shown more clearly in a different plane. The planning of procedures becomes safer, as the spatial relationships within the body are easier to understand. Misinterpretations can be reduced because structures are assessed not just in one view but in several.
For complex anatomical regions, such as the skull, the abdomen, or the spine, this technique is now standard practice.
What happens to the images?
The multiplanar reconstructions are created after the examination and saved together with the original images. Doctors can access them on a computer screen, zoom in, and scroll through the different planes. This creates a particularly comprehensive picture of the area of the body being examined. The most important images are usually included with the written report, so that they are available for further treatment.
In summary
Multiplanar reconstruction is a modern technique that significantly improves the evaluation of CT and MRI images. It makes it possible to view body structures from different angles and to identify changes more precisely. For the person being examined, this does not create any additional burden or risk. The benefit lies above all in accurate diagnosis and in better planning of treatments and operations.
