PMID- 30469018 OWN - NLM STAT- MEDLINE DCOM- 20190501 LR - 20190501 IS - 1873-4499 (Electronic) IS - 0899-7071 (Linking) VI - 54 DP - 2019 Mar-Apr TI - Clinical metric for differentiating intracranial hemangiopericytomas from meningiomas using diffusion weighted MRI. PG - 1-5 LID - S0899-7071(18)30288-2 [pii] LID - 10.1016/j.clinimag.2018.10.018 [doi] AB - PURPOSE: Intracranial Hemangiopericytomas (IHP) are dural based tumors that frequently recur/metastasize. Unfortunately, their imaging appearance overlaps significantly with more benign meningiomas. We evaluated the use of diffusion weighted imaging (DWI) to differentiate IHP from meningioma. METHODS: We compared MRI of IHP tumors (WHO Grades II/III) (n = 20) to meningioma (n = 48, WHO Grade I/II). FINDINGS: ADC values differed between IHP (1.05 x 10-3 mm2/s) and meningiomas (0.89 x 10-3 mm2/s) (p = 0.05). Normalized ADC ratios (nADC), differed between IHP and meningiomas (1.30 vs 1.07, p = 0.03). CONCLUSION: Importantly, a nADC cutoff of >1.3 was specific (96%) but not sensitive (35%) for identifying IHP. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - El-Ali, Alexander M AU - El-Ali AM AD - Department of Radiology, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite 200 East Wing, Pittsburgh, PA 15213, USA. FAU - Agarwal, Vikas AU - Agarwal V AD - Department of Radiology, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite 200 East Wing, Pittsburgh, PA 15213, USA. Electronic address: agarwalv@upmc.edu. FAU - Thomas, Andrew AU - Thomas A AD - Riverside Radiology and Interventional Associates, Inc., 3525 Olentangy River R., Suite 5362, Columbus, OH 43214, USA. FAU - Hamilton, Ronald L AU - Hamilton RL AD - Department of Pathology, Division of Neuropathology, University of Pittsburgh Medical Center, 3550 Terrace Street, S724.1 Scaife Hall, Pittsburgh, PA 15261, USA. FAU - Filippi, Christopher G AU - Filippi CG AD - Department of Radiology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, 100 East 77th Street, New York, NY 10075, USA. LA - eng PT - Journal Article DEP - 20181101 PL - United States TA - Clin Imaging JT - Clinical imaging JID - 8911831 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Brain Neoplasms/*diagnosis/diagnostic imaging/pathology MH - Diagnosis, Differential MH - Diffusion Magnetic Resonance Imaging/*methods MH - Female MH - Hemangiopericytoma/*diagnosis/diagnostic imaging/pathology MH - Humans MH - Magnetic Resonance Imaging/methods MH - Male MH - Meningeal Neoplasms/*diagnosis/diagnostic imaging/pathology MH - Meningioma/*diagnosis/diagnostic imaging/pathology MH - Middle Aged MH - Sensitivity and Specificity MH - Young Adult OTO - NOTNLM OT - Brain tumor OT - Diffusion weighted imaging OT - Intracranial hemangiopericytoma OT - MRI OT - Meningioma EDAT- 2018/11/24 06:00 MHDA- 2019/05/02 06:00 CRDT- 2018/11/24 06:00 PHST- 2018/01/05 00:00 [received] PHST- 2018/07/25 00:00 [revised] PHST- 2018/10/22 00:00 [accepted] PHST- 2018/11/24 06:00 [pubmed] PHST- 2019/05/02 06:00 [medline] PHST- 2018/11/24 06:00 [entrez] AID - S0899-7071(18)30288-2 [pii] AID - 10.1016/j.clinimag.2018.10.018 [doi] PST - ppublish SO - Clin Imaging. 2019 Mar-Apr;54:1-5. doi: 10.1016/j.clinimag.2018.10.018. Epub 2018 Nov 1.