Magnetic resonance Imaging (MRI) can be used to detect prostate cancer. Using MRI, a technologist can produce detailed pictures of the structures inside a man’s prostate, as well as its surrounding tissues. MRI is generally requested because it provides highly detailed images, however, certain factors can affect its quality, such as rectal distention.
How rectal distention affects MRI, and how to combat it
A recent study suggested that rectal distension may lead to poor quality results on prostate MRI. The study, published in the European Journal of Radiology, found that rectal loading correlated with rectal volume, which decreased the quality of DWI and displayed greater distortion.
To combat the image distortion, researchers suggest evacuating the bowels before MRI. They also recommended other strategies, including different diffusion weighted imaging (DWI) techniques or post-processing techniques to correct distortion. Prone imaging and correcting the inhomogenous magnetic field during its acquisition may also help.
In a related study published in the Journal of Magnetic Resonance Imaging, researchers discovered that a cleansing enema did little to improve the prostate MRI images of patients with rectal distention.
Patient preparation for prostate MRI
Generally, there is no special preparation requirement for patients required to undergo MRI. You may continue to take your prescribed medications regularly, and go about your diet and lifestyle as normal. Before your exam begins, you will be asked a series of questions, mostly centering on whether you have any piece of metal or metallic device inside you.
If you have any metal implants or are wearing a pacemaker, inform your MRI technologist immediately. Metal objects can cause you harm or be damaged if they are subjected to the strong magnetic field of the MRI machine.
For more accurate images, your technologist may request you to have an entirely liquid diet 24 hours prior to the MRI scan.
Prostate MRI Quality May Improve With Bowel Prep, RenalandUrologyNews.com