Korean Journal of Biological Psychiatry

The Evaluation of patients complaining of psychiatric symptoms following head injury is much affected by the results of various tests. The objective of this paper is to investigate the effectiveness of each test by comparing the structural and functional brain studies. The subjects were 93 organic mental disorder in and out patients at the Dept. of Neuropsychiatry of the Kyung Hee University Hospital. After carrying out MRI, CT, SPECT, EEG, the results of each were analysed for the sesitivity and ability to detect focal lesion. The degree of interest correlations of test results were also investigated. Furthermore, the characteristic features of psychological tests were studied and the relationship between each of above mentioned tests and psychological test was examined. As for the test sensitivity to diagnosis, the SPECT was the most superior followed by MRI, CT, EEG in that order. In the case of abnormality, SPECT ranked 1st in detection of focal lesion, followed by MRI, CT in thar order. In the interest result correlated significantly with that of MRI finding. In the MMPI, the average scores on F, Hs, D, Hy, Pa, Pt, Sc subscales were above 60. Abnormal SPECT group scored significantly high on the F, Pd, Pa, Sc, Ma scales and therefore in comparison to the SPECT normal group, displayed more psychotic features. In K-WAIS, the mean full scale IQ and abnormal SPECT, MRI, CT and EEG results. In conclusion, 1) The SPECT was most superior in sensitivity and detection of focal lesions. In comparison with other tests, the results of SPECT correlated well with MRI and thus is thought to be very useful testing method in the evaluation of organic mental disorder patients. 2) The MRI had relatively high sensitivity, ability to detect focal lesion and superior correlation with other test. 3)Although EEG fared less on sensitivity in comparison to other test, of above moderate abnormal grade group and that of MRI correlated significantly. 4) In the MMPI highly scored in F, Hs, D, Hy, Pa, Pt, Sc subscales and abnormal SPECT patients were shown to display more sever psychotic features. There was no significant character relationship between the lowered IQ(in K-WAIS) and abnormal findings on MRI, CT, SPECT, EEG.

Keywords Post-traumatic organic mental disorder;MRI;CT;SPECT;EEG;Psychological tests.