Naoto Matoba, Presenter: Nothing to Disclose

Takeshi Hara PhD, Abstract Co-Author: Nothing to Disclose

Xiangrong Zhou PhD, Abstract Co-Author: Nothing to Disclose

Keiji Sakashita, Abstract Co-Author: Nothing to Disclose

Hiroshi Fujita PhD, Abstract Co-Author: Nothing to Disclose

Statistical Parametric Mapping (SPM) was a well-employed method in functional imaging technique for fMRI and PET scans. The score value in SPM was corresponding to the activity of brain blood flow or functional molecular. The long isolated situations for patients in MR scanning and PET are not so appropriate for emergency medical care because of the critical treating. The purpose of this work was to develop a scoring method for brain CT images to detect brain damages, especially traumatic brain injuries, by using the scored values calculated from the averages and the standard deviations of normal cases because a drastic morphological or blood flow changing were typical finding in emergency medical care.

Our approach consists of two processes to build a brain model and to score patient scans using the brain model. The brain region in each scan was extracted after the skull area was recognized based on the CT value of bone. All of the brain region in 3D space were registrated each other to calculate the average (M) and the standard deviation (SD) of CT value in coordinate volume. The score of a patient scan was calculated using the M and the SD at the coordinate voxel as a normalized value.

We employed 50 normal cases to build the brain model and 18 cases (normal: 3, abnormal: 15) to score. As a result of scoring, all of the hematoma and bleeding regions in abnormal cases were well emphasized. The score of normal regions was around zero. Mis-registration artifact were confirmed around the edge of brain region as high score signals.

We have developed a scoring method for brain CT scans using 50 normal cases and confirmed the initial effectiveness for emergency medical care to enhance typical damaged regions.

Brain CT model will be useful to confirm morphological damages and typical bleeding in emergency medical care not using MRI or PET.

Matoba, N, Hara, T, Zhou, X, Sakashita, K, Fujita, H, Brain CT Scoring Method Using Normal CT Scans to Detect Brain Damage for Emergency Medical Care.  Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL. http://archive.rsna.org/2007/5006608.html