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[en] The annual meeting of RSNA has provided the following points. Computed tomography and ultrasound have become well established in routine medical care. Digital technology is becoming increasingly important in many fields of medicine like in radiology [digital substraction angiography], physiologic and clinical information system. Nuclear magnetic resonance [NMR] recently recognised as a more important diagnostic tool may become the technique of choice for the early diagnosis of multiple sclerosis and high pressure hydroencephalus. It is also usefull for the diagnosis of cardiac and vascular diseases. (APR)

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[en] A new technique for stereoscopic magnification angiography has been developed and combined with routine abdominal angiography. The technique utilizes two divergent X-ray beams at a 34⁰ angle with a 3.5 cm focal spot separation at a 94 cm focal-film distance produced by a synchronous are rotation of a microfocus X-ray tube. The synchronous motion of the tube is maintained by using an electromechanical device. A magnification factor of 2.0 to 3.0 is used, and 12 films are exposed in a series, the fastest sequence being 1.5 films per second. This technique provides the advantages of magnification and stereoscopic angiography, with excellent demonstration of small arterial branches and abnormal vascularity in three dimensions. (orig.)

[en] An osteoid osteoma nidus was removed under computed tomography (CT) scan guidance. This procedure may have advantages over en bloc resection for treatment of osteoid osteoma since it ensures the removal of the nidus without producing a large bony defect such as results from en bloc resection. (orig.)

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