Perdikakis, Evangelos, Eelco de Bree, Elpida Giannikaki, Evangelia G. Chryssou, Christine Valatsou, and Apostolos Karantanas. 2011. “Pelvic Hemangiopericytoma: The Role of Diffusion Weighted Imaging in Targeting the Biopsy Site and in Monitoring the Tumour Response to Radiotherapy”. Radiology and Oncology 45 (1). https://www.radioloncol.com/index.php/ro/article/view/1080.