Eclipse(TM) Treatment Planning System with Proton Convolution Superposition algorithm license Recalled by Varian Medical Systems, Inc. Due to There is an anomaly with the Eclipse(TM) Treatment...

Affected Products

Why Was This Recalled?

There is an anomaly with the Eclipse(TM) Treatment Planning System [TPS] Proton Convolution Superposition [PCS] dose calculation algorithm. The PCS algo- rithm calculates the water equivalent range incorrectly for non-square 3D CT images (either different number of pixels in X and Y, or non-square pixels). Before the dose is calculated, Eclipse resamples the CT images to create a calculation image with a maximum resolution of 256 x 256. The PCS algorithm assumes uniform resolution in X and Y directions, or that X = Y for all images, and erroneously sets the Y = X for dose calcu- lation. For images that are not square, where either X<>Y, or the length of X does not equal the length of Y, the computed water equivalent range R is erroneous compared to the correct range R: 1) X=Y; R =R (R is correct); 2) X<Y: R <R (R is too small) and 3) X>Y R >R (R is too big).

Where Was This Sold?

This product was distributed nationwide across all 50 states.

About Varian Medical Systems, Inc.

Varian Medical Systems, Inc. has 19 total recalls tracked by RecallDetector.

Related Recalls