Hey all. I just wanted to report back after my successful MRI with a Canon Galan 3T machine.
Of course, I was super nervous after some not-great experiences with other machines at other facilities, but I was able to get through an entire brain MRI with and without contrast with the Canon.
First of all, there is some confusion on the Canon's noise attenuation:
- Every machine made by Canon (formerly Toshiba Canon) comes with Pianissimo hardware. This is the way the machine is built, with the gradient coils being vacuum sealed. The gradient coils produce the loud noise, and the way Canon builds every single machine essentially puts more padding between these coils and the bore. This automatically makes every machine a little quieter than other brands (Siemens, GE, Philips, etc.).
- Pianissimo Zen is the software solution only applicable for a handful of sequences (Brain T1, MRA, and DWI). It consists of ultra-short echo-time sequences (physics I don't understand) that change how the coils move. These sequences are barely louder than ambient noise. All machines have this software - Siemens Quiet Suite, GE Silent Scan, etc. - AGAIN, THIS IS ONLY FOR A COUPLE OF SEQUENCES.
From my experience with the Galan, the techs didn't even know how to run the Zen or mUTE sequences (ultra-short echo time). I'm not sure if this is the same with most places, for instance, a facility with a Siemens machine not knowing how to turn on Quiet Suite. I chose the Canon for this reason, as the hardware is unchangeable, and therefore, regardless of the tech or facility, you will get a slightly quieter scan no matter what.
Overall, I'd say the Canon was 20% quieter than the last Siemens machine I used. This doesn't sound like much, but it made all the difference in terms of getting through the scan. Again, it is by no means a quiet experience, but with NRR 33 dB foam earplugs and pads around my ears, I was able to complete an entire 30-minute scan with gadolinium without a spike. To me, this is a win.
The struggle is finding techs who know anything about the Ultra Short Echo Time sequences on any machine. Most have never heard of it. This is why going with Canon is the best option for those of us with tinnitus & hyperacusis, IMO. Again not saying it's quiet but it's the lesser evil.
After looking all over the Southwest for Canon machines, I found a few locations, which I will list below. I went to UCSD, and despite the techs not knowing anything about the quiet sequences, I found them to be kind and sympathetic to my sensitivity struggle.
Here are the locations I found:
- UC San Diego Hillcrest OP - Canon Galan 3T (techs unaware of Zen sequences but otherwise a good facility)
- Beverly Community Hospital Montbello - Canon Titan 1.5T (techs aware of Zen sequences, but hospital now only scanning patients on an inpatient basis)
- Pioneers Brawley CA - Canon Galan 3T (I didn't speak to techs)
- Steinberg Diagnostic Medical Imaging Las Vegas - Canon Galan 3T, might also have a Canon 1.5T (I didn't speak to techs)
- Arizona Coast Radiology Havasu City AZ - Canon Fortian 1.5T (I didn't speak to techs)
These are the locations I found closest to me in Southern California.
I hope this is helpful!
I hate getting MRIs and avoid them at all costs unless absolutely necessary. If it is, then definitely do your research before picking a facility. Bring your own earplugs with the highest rating possible.
All the best!