ABSTRACT
A method of assessment of a zone of scintigraphic image based on a textural analysis was proposed. The method was tested by means of an analysis of synthesized images and assessment of 285 scintigrams of various hepatic lesions. The use of the method made it possible to improve the accuracy of differential diagnosis at the expense of defining the structures typical of diffuse and multiple small focal lesions which were undetectable by visualization.
Subject(s)
Image Processing, Computer-Assisted/methods , Radionuclide Imaging/methods , Algorithms , Diagnosis, Differential , Humans , Image Processing, Computer-Assisted/instrumentation , Liver/diagnostic imaging , Liver Diseases/diagnostic imaging , Radionuclide Imaging/instrumentation , TechnetiumABSTRACT
The authors present a detailed description of the parameters of gamma-chambers that are necessary to measure in order to assess the quality of the device as a whole. The main concepts have been laid down: resolution, spatial distortion, irregularity of the field of vision of a gamma-chamber, idle time of the system, sensitivity, etc. Methods for the evaluation of the main characteristic of gamma-chambers are considered. A necessity to organize the checking of gamma-chambers in hospitals and other health care facilities and the making up of a common system of assessment are discussed.
Subject(s)
Radionuclide Imaging/instrumentation , Quality ControlABSTRACT
A new method of coincidence of scintigrams received from a patient laying in an arbitrary position is proposed. Coincidence of point sources at 2 anatomical reference points is made before examination. Coincidence is realized by rotation and movement of one image relatively to the other one. This method is realized on a specialized data processing system MDS. Programming language is FORTRAN-4. The method is applied to complex examinations of the lungs and liver.
