Ok, but address it as two separate problems. Try the right TPJ/angular gyrus and or the right VLPFC at the one who have neuronavigation at first. The MRI scan will likely be burned on a disk and then you have that problem solved and it can be used other places. If it doesn’t work and the French trails scanning part confirms that the medial prefrontal and anterior cingulate plays a central role then it is easier to convince a psychiatrist to try a OCD protocol later.
a resent review of brain scans in dissociative states writes about depersonalization:
3.2.1. Depersonalization/derealization disorder
Most of the studies conducted in DPD patients presented alterations in functional brain activity in frontal gyri, especially the medial prefrontal gyrus, cingulate, and insula (Ketay et al., 2014; Lemche et al., 2007, 2016; Medford et al., 2006, 2016; Weniger et al., 2013). A study by Lemche et al. (2016) tested the neural correlates of inhibitory capacity via a combined Stroop/negative priming task. They found greater activation of the dorsomedial prefrontal cortex and posterior cingulate cortex in DPD patients during the Stroop task (n = 9) as compared to healthy controls (n = 12). Medford et al. (2016) examined brain activation in response to emotive visual stimuli in DPD patients (n = 14) as compared to healthy controls (n = 25). The patient group exhibited lower activity in the secondary visual cortex as well as increased activation in dorsolateral prefrontal cortex and anterior cingulate cortex. Related research (Lemche et al., 2007) demonstrated that DPD patients (n = 9) showed decreased BOLD signals in hypothalamus and amygdala during the processing of happy and sad facial expression compared to healthy subjects (n = 12). However, DPD patients (n = 9) also exhibited a greater activation than healthy controls (n = 10) in response to viewing their own faces vs. that of a stranger in the frontal cortices (anterior cingulate cortex, bilateral medial prefrontal cortex, and left middle frontal gyri) (Ketay et al., 2014). Another study (Medford et al., 2006) indicated lower activation in bilateral frontal areas, bilateral precuneus, and cerebellum during target word recognition task in DPD patients (n = 10) than healthy controls (n = 12).
So, Brainsway OCD coil could likely affect this location.