A simple method of scalp localization using multiplanar reconstruction of MR images - Technical note

BACKGROUND Image-based scalp localization methods currently used are complex and not s tandardized. The authors have developed a simple yet accurate method for cr aniotomy localization using multiplanar reconstruction (MPR) algorithms. METHODS In this method, the goal is to localize a projected point (defined as T) of the center of the lesion on the scalp. An oblique coronal plane is reforma tted using a patient's magnetic resonance (MR) images with MPR algorithms t o include both the center of the lesion and bilateral external auditory mea ti. Then the distance between T and the ipsilateral external auditory meatu s or sagittal suture (defined as S) is measured along the scalp contour in the plane. The distance between the bregma and S is also measured. These di stances are used for scalp localization, using a tape measure in the operat ing room. RESULTS We have had successful scalp localization in six clinical cases, It took ab out 3 min to measure each distance on the MR console. CONCLUSION This method for craniotomy planning using MPR algorithms is simple and suff iciently accurate. (C) 1998 by Elsevier Science Inc.