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16-channel coil allows high-resolution knee imaging for more patients

Best Practice
Walser, René, M.D. Radiology Center Speyer (RZS) • Germany

Radiology Center Speyer (Speyer, Germany), is a private center using both Intera 1.5T and Achieva 1.5T. It also provides MRI exams for the 600-bed regional hospital. The Center uses the 16-channel SENSE Knee coil because it provides high image quality, fits large knees and offers easier positioning.

 René Walser, MD 16-channel SENSE Knee coil
René Walser, MD
16-channel SENSE Knee coil

Center can comfortably scan patients who otherwise could not be scanned

René Walser, MD, specialist in nuclear medicine and diagnostic radiology at Radiology Center, Speyer, reports on his experiences with the 16-channel knee coil. It has a wide aperture and flared design to accommodate very muscular or obese patients, and its two 8-element rings offering large FOV coverage can help reduce the need for precise positioning.
“We have been using an 8-channel knee coil for the Achieva, or alternatively the Flex coil in opposite directions on both sides of the knee 180 degrees,” he says. “Now, with the 16-channel SENSE Knee coil, we can gain 2-3 minutes of time, with very high quality images. Also, it’s now possible to scan patients who are very large and might not have fit into the 8-channel coil.”
Patient comfort is further enhanced by the coil’s ramped insert to help support the knee. “It is designed to provide more comfort for the patient in the coil,” says Dr. Walser, “especially in cases where there is an injury.”

The coil’s larger feet-head coverage of 18 cm makes positioning less critical for good signal in the complete field of view. “And the FOV is larger, so sometimes you can see pathology you wouldn’t see with a smaller FOV,” says Dr. Walser.

Impact on clinical diagnostics

From a clinical perspective, these advantages benefit certain scans more than others. “In patients who have had a recent trauma, or in cases where the knee is swollen, we have more diagnostic options in seeing the overall picture of the knee,” says Dr. Walser. “In meniscal tears, especially, there is an improvement in overall image quality, so we are more confident in our diagnosis.”

Sagittal fat suppressed scans are routine at the Center. Since the 16-channel coil enables imaging in all directions, sagittal fat suppressed scans using SENSE in FH direction can have fewer pulsation artifacts in the popliteal artery, with no time penalties.

“Also in the femoral cartilage, you can see smaller lesions and feel more comfortable with a diagnosis, especially in chronic trauma of the knee, because you have better image quality,” Dr. Walser adds.

One additional benefit is the weight of the coil. “Technologists feel that the size and handling are very easy with this coil."

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Oct 18, 2011

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Best Practice
Achieva 1.5T
Release 2.6
16-channel SENSE Knee coil, ACL, cartilage, Knee, meniscus, Musculoskeletal

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