Developing Fast Pediatric Imaging

Inclusion Criteria:

* Infants, children and adults who have been diagnosed with Low Grade Glioma
* Healthy volunteers - Children from age 0 to adults with no upper age limit or;
* Diagnosed with LGG and being treated at DFCI;

Exclusion Criteria:

* Electrical implants such as cardiac pacemakers or perfusion pumps;
* Ferromagnetic implants such as aneurysm clips, surgical clips, prosthesis, artificial hearts, valves with steel parts, metal fragments, shrapnel, tattoos near the eye, or steel implants;
* Ferromagnetic objects such as jewelry or metal clips;
* Women of childbearing age who are seeking to become pregnant, who are breastfeeding, or who suspect they may be pregnant;
* Pre-existing medical conditions including a likelihood of developing seizures or claustrophobic reactions;
* Any greater than normal potential for cardiac arrest