Far from a permanent fix

It's been ages since I read about magnetic brain stimulation as a treatment for depression.  Perhaps it's because they are still trying to work out the right regime for it to have longer benefit:

Question  Do 10 once-daily sessions of intermittent theta-burst stimulation (iTBS) over the left dorsolateral prefrontal cortex improve depressive symptoms more than sham iTBS?

Findings  In this randomized, double-blind, clinical trial of 73 adults with major depressive disorder, iTBS was superior to sham, with significantly greater reductions in clinician-rated depressive symptoms after 5 and 10 sessions; however, between-group differences were not sustained at the 4-week follow-up, as the sham group showed continued improvement.

Meaning  These findings suggest that 10 once-daily iTBS sessions improve depressive symptoms more than sham in the short term, with no sustained advantage after 4 weeks.

Here's the link.