Computed tomography of traumatic intracranial lesions
10.3348/jkrs.1981.17.2.230
- Author:
Sei Chul YOON
;
Choon Yul KIM
;
Sung Yong LEE
;
Yong Whee BAHK
- Publication Type:Original Article
- MeSH:
Atrophy;
Body Weight;
Brain;
Contrast Media;
Contusions;
Craniocerebral Trauma;
Diagnosis;
Hematoma;
Hematoma, Subdural;
Humans;
Hydrocephalus;
Injections, Intravenous;
Methods;
Subdural Effusion;
Tomography, X-Ray Computed;
Violence
- From:Journal of the Korean Radiological Society
1981;17(2):230-239
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The cranial CT is a new radiological technique with which, for the first time, minimal differences anattenuation by intracranial soft tissue can be measured exactly. Th basic physical principles of CT have beenextensively presented by Hounsfield (1973). It is well established that the attenuation of extravasated blood measures between 35 and 45 houns field units. Therefore no difficulty should be encoutered in the recognition anddiagnosis of extra-axial hematoma and cerebral contusion since the density of the brain parenchyma never measures more than 25 units. As the constant increase in high velocity accidents and violence, the problem of acute headinjury is one of the matters of great importance in today's medical practice. Therfore it is very important to figure out the method that would allow us to diagnose easily and precisely the effects of trauma upon the brain inorder to institute the proper treatment at the earliest possible moment . CT allows us to make a diagnosis quickly and in a non-invasive manner. The CT scan was carried out on 310 head trauma cases in the department of radiology, St. Mary's and Kang Nam St. Mary's Hospital, Catholic Medical College, for 16 months from June 1979 to Oct. 1980.All the scans were obtained with the Hitachi CT-H2 scanner and the scans were repeated following intravenous injection of high dose of contrast media(roughly 1.8cc per kg body weight of 60% Conray). We have reviewed the CTscans of 310 patients got acute head injury in order to assess the location of brain lesions, the relationshipbetween the CT scans of 310 patients got acute head injury in order to assess the location of brain lesions, the relationship between the CT densities of hematomas and their stage, the shape mass effect of the extra-axialhematomas, and the effect of contrast enhancement. The resuls were as follows; 1. Of all 310 cases of the headinjuries, epidural hematoma was 13.5%, subdural hematoma was 8.7%, subdural hygroma was 10%, cerebral contusion was 39%. hydrocephalus and atrophy was 3.9% and negative finding was 24.9%. 2. The extra-axial hematoma waslocated on the right side in 49.3% and the left side in 39.1% and bilaterally in 11.6%. Therfore unilateral lesion was much more than bilateral one. 3. The extra-axial hematoma was getting decreased in density as time gone by. 4. The shape of epidural hematoma was biconvex in 88.1% and planoconvex in 11.9%. 5. The shape of subdural hematoma was crescent in 88.9% and biconvex in 11.9% in chronic stage. 6. The mass effect of extra-axial hematoma was getting slowly decreased as time gone by. 7. The extra-axial hematoma was enhanced by the contrast media in allacute, subacute and chronic stages as well as in the cerebral contusion, but there was a tedency that the contrast enhancement of hematoma was getting increased as time gone by.
