Our Rental, Service and Parts teams are available to serve urgent needs during the COVID-19 outbreak.
Please contact 517-668-8800 for immediate assistance.

View Rental Options

>> Buy & Sell Now

Contact Us

 Your Guide to Medical Imaging Equipment

Enjoy these tips, tricks and insights that answer 100's of questions we've received from radiology and imaging professionals that need help buying, selling, servicing and maintaining their medical imaging equipment: MRI, CT, C-Arm, Digital X-ray, PET/CT and Women's Health. We extend the life of imaging equipment so that healthcare providers worldwide can extend the lives of patients. This is why we answer your imaging equipment questions.

~ Block Imaging Team

Knocking Sound from Your GE CT Scanner? Check Your Encoder Wheel!

Posted by Beka Waldron

May 23, 2019 11:20:00 AM

:: 1 minute read ::

ge-lightspeed-gantry-encoderSo, you're running your GE CT and you start hearing a rattle, a jitter, or a knock. It never made that sound before, and you're pretty sure it shouldn't make that sound at all. Why is it doing that?

With so many moving parts, there are a few things that can create a similar sound inside the gantry of a GE CT scanner, however, one of the most common for is the axial encoder. Keep reading to learn what you should do to solve the problem.

The Nature of the Problem

The sound that you hear from an axial encoder assembly is caused when the plastic material that makes up the sprocket begins to deform. Because the gantry returns to the same axial position each time it stops, the deformation is most likely to develop at that spot. As the deformation increases, the wheel begins to "hop" more and more and can, eventually, skip counts. The hopping creates the knocking sound when the metal of the assembly's moving bracket strikes the fixed bracket. You can see the encoder assembly bouncing when the left side cover is off. 

The Solution

The best thing to do when you begin to hear your encoder assembly knocking is to schedule its replacement at your next convenience. As time and use go on, the deformation of the sprocket will only worsen. If for some reason you need to put off replacement, you do have some time before this issue will put your system down completely, but if you can stay ahead of downtime, we suggest you do so.

Currently, this is what you can expect to pay for a replacement axial encoder assembly (p/n 5182284-2):

New: $2,300

Used: $950

5182284-axial-encoder-for-ge-ct-2

The Next Step

If you've heard encoder replacement knocking at your door (See what I did there?) you'll need two things to answer: a replacement encoder assembly and a field service engineer to install it. Fortunately, we can help you with both of those things. Use the buttons below to reach out to our Parts Team or our Service Team and tell us how we can help.

>> REQUEST CT PARTS

>> REQUEST CT SERVICE

 

Written by Beka Waldron

author of blog post

Beka Waldron is a Customer Service Representative with the Block Imaging Parts Team. It’s her goal to offer parts buyers the quickest and clearest response when they bring their urgent parts needs. If she’s not solving a parts problem, Beka is probably camping, kayaking, knitting, or just sipping a good, strong cup of coffee.

Topics: Imaging Equipment Service, Imaging Equipment Parts, CT Scanner

Post a Comment Here

Search this site

Get medical imaging equipment insights delivered straight to your inbox. Subscribe below.

Resources, videos, and tools to learn more about your project
Meet the Block Imaging Team
See Imaging Equipment Prices

Questions? Ideas? Imaging project you'd like to discuss? Let us know!