Endoscope biopsy guided navigation for intra-parenchymal lesions is safe and effective, but determination of the entry point and trajectory of the endoscopic biopsy is less clear. We describe preoperative planning based on stereotactic methods, and achieving the plan using several techniques. The preoperative planning was based on stereotactic methods such as determining target, entry point, an...

Health technology The use of frameless stereotactic biopsy was investigated. The technique consisted of a neuronavigation system, based on an infrared LED-based system (Easy Guide Neuro, Philips Medical Systems), and a novel stereotactic guide that was adaptable to a variety of instruments. The developed guide was freely adjustable to reach the entire cranium and would lock in place rigidly, al...

A 58-year-old woman presented with severe fatigue, headache, diplopia, and a transient paresis of the left leg. Magnetic resonance imaging revealed a solitary rightsided lesion of the cerebral peduncle, without further signs of systemic disease or primary tumor. A stereotactic biopsy of the lesion was performed. Histopathological examination showed adenocarcinoma, presumably of lung origin. The...

Initial experience with a new arc-radius design of stereotactic frame that interfaced with the existing components of the Brown-Roberts-Wells instrument is reported. Over a 6-month period, 32 procedures were performed on 23 males and nine female patients (mean age 32 years); these included 27 stereotactic biopsy procedures, two stereotactic implantations of cyst catheter reservoirs, two ventric...

BACKGROUND Stereotactic brain biopsies are widely used for establishing the diagnosis of intracranial lesions. Here we examine whether stereotactic biopsy of smaller brain lesions, defined for this study as being less than 1 cubic centimeter (1 cc) in volume, are associated with lowered diagnostic yield. METHODS We conducted a retrospective analysis of 267 consecutive patients who underwent s...

PURPOSE Stereotactic needle breast biopsy and vacuum assisted breast biopsy have replaced wide local excision in the last decades. B3 lesions of the breast represent a particular subgroup which is difficult to manage. The purpose of the present study was to present our experience with this specific type of lesions and to examine the conformity of Princess Margaret Hospital with current recommen...

The prone table machine is a mammographic X-ray system specially designed for use in the stereotactic localisation of breast abnormality. In this study, its clinical usefulness was investigated in terms of duration, success rate, complications, and patients' acceptance of the procedure. During a 5-month period, 79 patients attended the Kwong Wah Hospital for stereotactic-guided biopsy on the pr...

A computer simulation of stereotactic breast biopsy was developed that paralleled the geometric configuration of a currently available breast biopsy system. This model was developed to define and improve the targeting of breast lesions with stereotactic biopsy techniques. Lesions must be clearly identified and accurately targeted on both views for successful localization. Nonvisualization of a ...