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This is a report on the clinical use of sonographic imaging. Experimental studies have shown that parallel sonographic sections are available only in vitro, which means no in-vivo three-dimensional reconstruction is possible as it is with magnetic resonance and computed tomography. The idea that a coordinated sequence of sections can be obtained by spatial rotation of the plane of sound so that the individual sections differ from one another by defined angular distances, enables three-dimensional reconstruction of sonographic in-vivo sections. A transducer was constructed that enables the production of sonographic sections rotating around a fixed center of rotation. Its clinical usefulness was tried and confirmed in the imaging of early pregnancies, benign and malignant carcinomas of the breast, and in imaging a gallbladder with a solitary gallstone. Three-dimensional imaging can be achieved either as a ring-shaped structure or with a continuous surface. This points to the possibility of diagnosing malformations early in pregnancy if the number of sections is sufficiently high. In tumour imaging the malignant tumour seems to be clearly distinguishable from the benign one; three-dimensional diagnosis is likely to furnish important additional criteria in diagnosis. Further clinical studies will have to verify this.

CT has becom e the imaging m ethod used most often in the investigation of abdominal trauma in children because of the accuracy. utili ty and reproducibility. CT permits detection of multifocal injuries in the abdomen and retroperitoneum and may reduce the length of hospital day.Between Sept. 1984 and Mar. 1990. abdominal CT of 102 ch ildren with a bdominal trauma and c linical suspicion of intraabdominal organ damage were evaluated retrospectively. Abdominal injury was diagnosed in 78 childre n Ages ran ged from 13 months to 15 years(mea n. 7.9 years). Fifth six( 72 %) were boys a nd 22(28%) were girls. and the most common age group were between four and six years age(25 cases. 32%). Traffic accidents(50 cases. 64 %)were the commonest cause of injuryThe most common CT manifestation was hemoperitoneum(45 cases' 58%) . The liver and s pleen were most commonly injured. in 29 patients(37 %) a nd 31 patients(40%) respectively.

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