title: [Computer tomography-guided stereotaxic biopsy of intracranial lesions. Simple technic for the calculation of coordinates; method for the reduction of operative risk in the critical areas of the brain].
abstract: The authors describe an original technique to calculate the coordinates for CT-guided stereotactic biopsies of brain lesions. On the basis of simple trigonometric formulas it is possible to get an accuracy of +/- 1 mm. By means of the standard software of a high precision CT and with a CT-compatible stereotactic apparatus the x, y, and z coordinates are obtained in a quick and reliable way. A further development of the trigonometric approach to the stereotactic calculations is the "double target technique". It allows to preset the path of the biopsy-device through a selected point, to reach the final target: in this way a valuable reduction of the surgical risk is afforded especially in critical areas of the brain (brain stem, pineal region etc.).
authors.forename: F
authors.initials: F
authors.lastname: Ammannati
authors.forename: D
authors.initials: D
authors.lastname: Mundici
authors.forename: P
authors.initials: P
authors.lastname: Mennonna
authors.forename: R
authors.initials: R
authors.lastname: De Dominicis
authors.forename: G
authors.initials: G
authors.lastname: Dal Pozzo
authors.forename: C
authors.initials: C
authors.lastname: Fonda
authors.forename: G
authors.initials: G
authors.lastname: Pazzaglini
authors.forename: B
authors.initials: B
authors.lastname: Lehmann
mesh_terms: D001706:Biopsy; D001921:Brain / Q000473:pathology*; D001932:Brain Neoplasms / Q000473:pathology*; D001933:Brain Stem / Q000473:pathology; D003196:Computer Graphics; D006801:Humans; D012306:Risk; D013238:Stereotaxic Techniques / Q000295:instrumentation; D014057:Tomography, X-Ray Computed
vernacular_title: La biopsia stereotassica TC-guidata delle lesioni endocraniche. Semplice tecnica di calcolo delle coordinate; Metodica per la riduzione del rischio operativo nelle aree critiche dell'encefalo.