Localisation of Stereotactic Radiofrequency Thalamic Lesions by Computerised Axial Tomography

Correlation between Clinical Outcome and Size and Site of the Lesion in Computed Tomography Guided Thalamotomy and Pallidotomy

“…On the other hand, lesions with bad or short-lasting results, when visualized, were at sites that were not significantly different from the sites of the lesions with good results. This confirms previous findings based on autopsy [1,3], electrophysiology [18], and C T studies [4,9], Although the findings must reflect well-known individual anatomical variabilities of the hu man brain [26][27][28], one may wonder why all lesions did not result in good clinical outcome, even though all lesions were based on satisfac tory electrophysiological stimulation. The fact that in some of our pa tients with good results (case Nos.…”

“…[4,9]. In 1981, Colombo et al [6] pointed out that 'for a more precise evaluation of the position of the lesion with respect to the aimed target, a method of transferring CT spatial data into a stereotactic coordinate system is mandatory'.…”

“…Size and site of stereotactic lesions for the treatment of movement disorders have been evaluated both at autopsy [1][2][3] and in computed tomography (CT) studies [4][5][6][7][8][9][10][11][12], A purposeful C T assessment of the site of the lesion would be to correlate it not only to the preoperative target coordinates, but also to the anatomical C T target point, i.e., a given nucleus, defined in relation to the ventricular landmarks in the actual C T study, which requires a postoperative C T study done under stereotactic conditions. Furthermore, in order to obtain a meaningful correlation between radiological findings and clinical results of sur gery, the stereotactic C T (SCT) study should be performed several months after surgery, when the edema around the lesion has disap peared, and the lesion has reached its final shape and size [3,12].…”

Application of Radiofrequency in Low Back Pain Treatment

“…Before the development of PRF (non-thermal), RF has been used directly targeting neural tissue, including movement disorders (Carr 1971;Cala et al, 1976), cardiac arrhythmias (Baszko et al, 2002), trigeminal neuralgia, and cervical and lumbar radicular pain, and the treatment target is the reflecting DRG (van Kleef et al, 1996). After PRF was developed, it was used more and more because of a lower complication rate (Chua et al, 2010).…”

Low Back Pain Pathogenesis and Treatment

“…Before the development of PRF (non-thermal), RF has been used directly targeting neural tissue, including movement disorders (Carr 1971;Cala et al, 1976), cardiac arrhythmias (Baszko et al, 2002), trigeminal neuralgia, and cervical and lumbar radicular pain, and the treatment target is the reflecting DRG (van Kleef et al, 1996). After PRF was developed, it was used more and more because of a lower complication rate (Chua et al, 2010).…”