Titlebook: Illustrated Computer Tomography; A Practical Guide to Shinji Takahashi (President),Sadayuki Sakuma (Chai Book 1983 Springer-Verlag Berlin H

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Orientation and Interpretation of CT Imagesge is compared with that of the normal anatomy and examined for abnormality in size or shape of organs or tissue. ... Therefore, for interpretation of the CT, it is essential to know how the anatomical figures of axial transverse sections of various parts of the normal body are constituted.

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Planning of Treatment Using CTt, and right — are marked on the skin of the patient using the three light localizers attached to the ceiling and bilateral walls of the room. These lines are termed “positioning skin markers” and are parallel to the body axis (Fig. IV.10a).

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Debut and Spreadoduction of shadows overlapping the images of the tissue or lesion, causing pseudoimages even when the degree of absorption is adequate. It is therefore better to examine the subject in two dimensions, imaged on two-dimensional film, in order to prevent any of the above miscalculations. This is the essence of tomography.

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Performance Evaluation 1976; McCullough 1980). The International Commission on Radiological Units and Measurements (ICRU) has also been active in defining common technical terms for CT. This performance evaluation has been discussed in Japan (Takenaka et al. 1979) as one of the main subjects in CT imaging

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Computed Tomography of Diseasesdue to its noninvasive nature and usefulness in screening examinations. Because of its excellent density resolution, CT has the additional important advantage of being able to visualize the cerebral parenchyma.