Study: NCT00853528

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: questionnaire administration
Description: prior to radiosurgery, at radiosurgery completion, and then at subsequent follow-ups (3, 6, 9, 12, 18, and 24 months after treatment

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: questionnaire administration
Description: prior to radiosurgery, at radiosurgery completion, and then at subsequent follow-ups (3, 6, 9, 12, 18, and 24 months after treatment

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: questionnaire administration
Description: prior to radiosurgery, at radiosurgery completion, and then at subsequent follow-ups (3, 6, 9, 12, 18, and 24 months after treatment

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: diffusion tensor imaging
Description: prior to initiating CyberKnife radiosurgery, at 6 weeks after CyberKnife therapy, and at 6 months after CyberKnife therapy

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: functional magnetic resonance imaging
Description: prior to CyberKnife, at 6 weeks, and 3 months after CyberKnife?, every 3 months for the first year, and every 6 months thereafter

Intervention type: RADIATION
Group type: EXPERIMENTAL
Intervention: hypo-fractionated SRS
Description: two to three consecutive daily sessions within one week for 3 cohorts- Cohort 1 = 21 Gy; Cohort 2 = 24 Gy; Cohort 3 = 27 Gy

Intervention type: RADIATION
Group type: EXPERIMENTAL
Intervention: hypo-fractionated SRS
Description: two to three consecutive daily sessions within one week for 3 cohorts- Cohort 1 = 21 Gy; Cohort 2 = 24 Gy; Cohort 3 = 27 Gy

Intervention type: RADIATION
Group type: EXPERIMENTAL
Intervention: hypo-fractionated SRS
Description: two to three consecutive daily sessions within one week for 3 cohorts- Cohort 1 = 21 Gy; Cohort 2 = 24 Gy; Cohort 3 = 27 Gy

Intervention type: RADIATION
Group type: EXPERIMENTAL
Intervention: single-fraction SRS
Description: two to three consecutive daily sessions within one week for 3 cohorts- for 3 cohorts- Cohort 1 = 16 Gy; Cohort 2 = 18 Gy; Cohort 3 = 20 Gy