=====Target volume=====
[[Planning]] target volumes for [[high grade glioma]]s were similar at 3 [[Tesla]] and 1.5Tesla [[MR]] using a [[standard imaging protocol]]s. However, in some patients, the 3T MR may reveal substantially smaller [[tumor]] [[volume]] due to inferior [[conspicuity]] of the [[lesion]]. These findings imply that while overall the radiation target volumes are comparable, there are differences in contrast-to-noise ratios (CNR) and signal-to-noise ratio (SNR) that lead to differences in individual patients. The 1.5T may be better for gaining conspicuity of the tumor
((Guarnaschelli JN, Vagal AS, McKenzie JT, McPherson CM, Warnick RE, Batra V,
Breneman JC, Lamba MA. Target definition for malignant gliomas: No difference in 
radiation treatment volumes between 1.5T and 3T magnetic resonance imaging. Pract
Radiat Oncol. 2014 September - October;4(5):e195-e201. doi:
10.1016/j.prro.2013.11.003. Epub 2014 Jan 8. PubMed PMID: 25194105.)).