Is MRI imaging on same machine for NETs + Liver metastases important?

I have been told by several drs and read that it is important to have your images taken on the same machine for the quarterly, semi annual, etc MRI follow up.

I have had to make several calls to get my MRI follow up scan scheduled. Today I was able to talk to a lead tech who told me they had three Siemen MRI's at the location, a Aera 1.5, a Sola 1.5 and a Skyra 3.0. Though you can not specify a machine when you make the appt. The 3.0 is considered a better image for the liver.

As I continued to research I came across a study indicating that some tumors readings could not be true changes.
Conclusion
An increase < 9% in measurement and a decrease of −10% on DWI should not be considered as true changes, with 95% confidence, versus 24% and −22% on arterial and 17%, −16% on portal phases, respectively. DWI might thus be the most reliable MR sequence for monitoring size variations of LMNETs. https://www.sciencedirect.com/science/article/pii/S2211568417303200

For viewing neuroendocrine metastatic liver tumors using a Siemens MRI, the best approach is a multiparametric MRI including diffusion-weighted imaging (DWI) and hepatocyte-specific contrast-enhanced dynamic MRI. Specifically, DWI is crucial for detecting and characterizing these metastases.

I am going to discuss with my doctor, but was interested if anyone has investigated this before. I was surprised at reading the conclusion above that some changes were to be disregarded as not true changes.

Thanks for sharing.