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Spiral (helical) CT Heiken JP; Brink JA; Vannier MWRadiology 1993[Dec]; 189 (3): 647-56Spiral (helical) computed tomography (CT) involves continuous patient translation during x-ray source rotation and data acquisition. As a result, a volume data set is obtained in a relatively short period of time. For chest or abdominal scanning, an entire examination can be completed in a single breath hold of the patient or in several successive short breath holds. The data volume may be viewed as conventional transaxial images or with multiplanar and three-dimensional methods. The authors review the technologic aspects of spiral CT, as well as its advantages, limitations, and current clinical applications.|*Algorithms[MESH]|*Image Processing, Computer-Assisted[MESH]|Angiography/methods[MESH]|Artifacts[MESH]|Humans[MESH]|Radiation Dosage[MESH]|Technology, Radiologic[MESH]|Tomography, X-Ray Computed/*methods[MESH] |
