Diabetic Ketoacidosis and Its Impact on the Brain

Participant Schedule: 1. One visit for 3-4 hours at the Stanford Medical Center to complete neuropsychological testing and to become familiar with the MRI scanner. 2. Subjects who need to become more familiar with the MRI scanning process will view a video tape at home. 3. One visit for 1-2 hours at Stanford Medical Center to have the MRI scan of the head completed. 4. Subjects between 10 and 17 years of age will also be asked to complete two additional abbreviated neuropsychological tests at one week and one month from enrollment. 5. Subjects may have the complete neuropsychological testing and MRI scan repeated 15 months from time of enrollment.