Patent ID: 9351700
Filing Date: 2016-05-31
CPC Classification: A61B,H05G

Claim Text:
1. A computed tomography (CT) scanning method, comprising: determining values for a first scanning dosage and a second scanning dosage used in a scanning process based on a trigger condition which varies regularly and attenuation fluctuations of an object to be scanned, wherein the first scanning dosage is higher than the second scanning dosage, and at least one of the first scanning dosage and the second scanning dosage has an inconstant value; scanning a target position with dosages at the determined values; during a transition process from the first scanning dosage stage to the second scanning dosage stage, implementing real-time calculation to obtain a time period for transition from a current scanning dosage to an initial scanning dosage in a third scanning dosage stage performed after the second scanning dosage stage; implementing real-time comparison between the calculated time period and a preset time period; and if the calculated time period is longer than or equal to the preset time period, terminating the transition process from the first scanning dosage stage to the second scanning dosage stage, terminating the second scanning dosage stage, and transitioning to the third scanning dosage stage from a current time point.