The article says its safe if the pacemaker is manufactured after year 2000.
Harvard Medical
www.health.harvard.edu/heart-health/mri-is-safe-for-most-people-with-pacemakers-and-defibrillators#:~:text=The%20researchers%20concluded%20that%20MRI,is%20monitored%20during%20the%20scan.
Memorial Sloan Kettering Cancer Center website compares CT scan and MRI as follows.
With a CT scan, we can create an image of almost the entire body, from the neck to the thighs, in a few seconds. CTs are incredibly useful for diagnosing and staging cancer, checking whether it has come back, and monitoring whether a treatment is working. It’s very effective for surveying the entire body to look for places where the cancer has spread, such as the lungs, liver, or bone. These are called metastases. Most of the time, CT is the first choice to stage cancer.
What are the advantages of MRI?
Where MRI really excels is showing certain diseases that a CT scan cannot detect. Some cancers, such as prostate cancer, uterine cancer, and certain liver cancers, are pretty much invisible or very hard to detect on a CT scan. Metastases to the bone and brain also show up better on an MRI.
I do not wear a pacemaker, but recently, I had a few MRIs and a CT Angiogram scan of my head and neck.
CT Scan was fast. MRI was long and very loud. I thought the sound would make me a deaf when I went there for the tinnitus problem. Your father needs to lie down still for 30-40 minutes. This part was hard for me as I caughed due to my chronic asthama problem.
best
