Image guided biopsies are nowadays more and more applied in the diagnosis of a wide variety of disease.Different imaging modalities are used to guide the biopsy needle through the body to the target, computed tomography (CT), ultrasound (US) and magnetic resonance imaging (MRI)(1). Each guiding modality has its advantages and disadvantages. Ultrasound may be cost effective and provide real-time feed- back without radiation, although lesions can be obscured by bone or bowel gas and may be occult on ultrasound. MRI has excellent contrast resolution without...
Methods and materials
From 1 May to 30 September 26 patients (mean age 61 years, range 38-87 years, M:F 12: 14) underwent biopsy with standard CT guidance (control group) and 26 patients (mean age 57 years, range 31-84 years, M: F 5:21) underwent biopsy with the use of electromagnetic navigation system (navigation group). Data were retrospectively evaluated. Operators were interventional radiologists with more than 5 years of experience.
All procedures were performed using a 64 sliceCT scan Prime SP Aquilion Canon Medical Systems Europe B.V. (Tokyo, Japan)
Sample was diagnostic in 26/26 (100%) cases in navigation group vs 23/26 (88.4%) (p = 0.235)
In navigation group versus control group were performed a significant lesser number of scans, 7 vs 11 scans (range respectively from 3 to 17 vs from 3 to 25) (p= 0.022), the average time between first and last scan was 31’ 21” ± 10’ 38” vs 25’ 00” ± 12’43” (p=0.637), the radiation dose to patients' was significant lesser in navigation group vs control group (TDLP 909.63 mGy·cm ±...
The electromagnetic navigation system for CT-guided biopsies enable to perform biopsies with the same diagnostic rate as conventional technique, with a significant lower number of scans required, a significant lower radiation dose, and a significant more frequent use of non-axial approach.
Personal information and conflict of interest
S. Tortora; Milan, ITALY/IT - nothing to disclose G. Mauri; Milan/IT - nothing to disclose G. Gorga; Milan/IT - nothing to disclose D. Maiettini; Perugia/IT - nothing to disclose G. M. Varano; Rome/IT - nothing to disclose P. della Vigna; Milan/IT - nothing to disclose G. Bonomo; Milan/IT - nothing to disclose E. Valconi; Milan/IT - nothing to disclose F. Orsi; Milan/IT - nothing to disclose
Rouchy, R. C., Moreau-Gaudry, A., Chipon, E., Aubry, S., Pazart, L., Lapuyade, B., … Bricault, I. (2017). Evaluation of the clinical benefit of an electromagnetic navigation system for CT-guided interventional radiology procedures in the thoraco-abdominal region compared with conventional CT guidance (CTNAV II): Study protocol for a randomised controlled trial.Trials,18(1), 1–11.https://doi.org/10.1186/s13063-017-2049-6
Kim, E., Ward, T. J., Patel, R. S., Fischman, A. M., Nowakowski, S., & Lookstein, R. A. (2014). CT-guided liver biopsy with electromagnetic tracking: results from a single-center prospective randomized controlled trial.American Journal of...