This paper describes the development and use of a system to aid in the radiological interpretation of C.T. scan images of patients with cerebral disease. The system is able to provide guidance, both on diagnosis and the need for further scan investigations. Explanation and help facilities, similar to those found in certain rule-based expert systems, are available on demand. Diagnostic and other advice is, however, based on hard statistical data. The scan interpretation and diagnostic system offers important benefits in the training of less experienced radiologists.
A rare case of asymptomatic cancer of the ascending colon presenting as a subcutaneous groin mass is reported. At the time of right hemicolectomy with resection of the groin mass there was no sign of incontinuity spread or lymph blockage. Sequential determination of carcinoembryonic antigen levels (CEA) in serum reflected the reduction in tumor mass after surgery as well as subsequent recurrences of disease in the groin and in the lung after 2 years. Immunoperoxidase staining of the primary tumor and the metastases showed strong positivity for CEA confirming the origin of the serum CEA. There have been no signs of liver involvement. The route of spread of this unusual metastasis is not known.
This paper describes a prototype system to aid in the radiological interpretation of CT scan images of patients with cerebral disease. The system is able to provide guidance, both on diagnosis and the need for enhancement.
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