A system for determining a hazard score for a patient having cerebral ischemia, comprising: a device arranged to obtain or store an image of the patient's tissue, wherein the image comprises a plurality of patient image voxels; a memory or computer-readable medium storing a cerebral ischemia hazard atlas; an output device; and a processor linked to the imaging device, memory, and output device, wherein the processor is programmed to (i) obtain the image of a tissue of the patient; (ii) identify voxels of the patient image that are damaged by cerebral ischemia as damaged patient image voxels; (iii) obtain from the memory or computer-readable medium the cerebral ischemia hazard atlas, which has been generated by obtaining a training set including patient images for a number of different patients; identifying damaged image voxels in each patient image of the training set and rating the voxels depending on the severity or probability of the damage; matching the patient images of the training set to create an atlas of the brain; multiplying, for each patient, each damaged voxel of the corresponding patient image by a coefficient corresponding to the NIHSS score assigned to said patient divided by the number of damaged voxels, wherein the result is used to assign, to each voxel of the atlas, a hazard value, such that each voxel of the atlas represents the likelihood of an infarct in that area; (iv) match voxels of the patient image to an anatomical region of the hazard atlas; (v) compute a hazard score for the patient, wherein the hazard score is the sum of all damaged patient image voxels weighted by a hazard value corresponding to that voxel location; and (vi) transmit the hazard score to the output device. a device arranged to obtain or store an image of the patient's tissue, wherein the image comprises a plurality of patient image voxels; a memory or computer-readable medium storing a cerebral ischemia hazard atlas; an output device; and a processor linked to the imaging device, memory, and output device, wherein the processor is programmed to (i) obtain the image of a tissue of the patient; (ii) identify voxels of the patient image that are damaged by cerebral ischemia as damaged patient image voxels; (iii) obtain from the memory or computer-readable medium the cerebral ischemia hazard atlas, which has been generated by obtaining a training set including patient images for a number of different patients; identifying damaged image voxels in each patient image of the training set and rating the voxels depending on the severity or probability of the damage; matching the patient images of the training set to create an atlas of the brain; multiplying, for each patient, each damaged voxel of the corresponding patient image by a coefficient corresponding to the NIHSS score assigned to said patient divided by the number of damaged voxels, wherein the result is used to assign, to each voxel of the atlas, a hazard value, such that each voxel of the atlas represents the likelihood of an infarct in that area; (iv) match voxels of the patient image to an anatomical region of the hazard atlas; (v) compute a hazard score for the patient, wherein the hazard score is the sum of all damaged patient image voxels weighted by a hazard value corresponding to that voxel location; and (vi) transmit the hazard score to the output device. (i) obtain the image of a tissue of the patient; (ii) identify voxels of the patient image that are damaged by cerebral ischemia as damaged patient image voxels; (iii) obtain from the memory or computer-readable medium the cerebral ischemia hazard atlas, which has been generated by obtaining a training set including patient images for a number of different patients; identifying damaged image voxels in each patient image of the training set and rating the voxels depending on the severity or probability of the damage; matching the patient images of the training set to create an atlas of the brain; multiplying, for each patient, each damaged voxel of the corresponding patient image by a coefficient corresponding to the NIHSS score assigned to said patient divided by the number of damaged voxels, wherein the result is used to assign, to each voxel of the atlas, a hazard value, such that each voxel of the atlas represents the likelihood of an infarct in that area; obtaining a training set including patient images for a number of different patients; identifying damaged image voxels in each patient image of the training set and rating the voxels depending on the severity or probability of the damage; matching the patient images of the training set to create an atlas of the brain; multiplying, for each patient, each damaged voxel of the corresponding patient image by a coefficient corresponding to the NIHSS score assigned to said patient divided by the number of damaged voxels, wherein the result is used to assign, to each voxel of the atlas, a hazard value, such that each voxel of the atlas represents the likelihood of an infarct in that area; (iv) match voxels of the patient image to an anatomical region of the hazard atlas; (v) compute a hazard score for the patient, wherein the hazard score is the sum of all damaged patient image voxels weighted by a hazard value corresponding to that voxel location; and (vi) transmit the hazard score to the output device.