Influencing factors in liver on three-dimensional ultrasound single-modality images fusion technology
Liuju Li · Zhongguo yixue yingxiang jishu · 2015
Objective To explore influencing factors on three-dimensional ultrasound(3D-US)images fusion technology and to obtain ideal fusion effection.Methods 3D-US volumetric images of right hepatic anterior segment from 10 healthy volunteers were acquired and 3D-US automatic registrations based on hepatic vessel were performed in every pair of images.Control images were collected at the end of the breath under hyperthesis with volumetric scanning angle of 90°.The impact of the influencing factors including breathing,posture,intercostal and volumetric scanning angle on the technical success rate and accuracy of 3D-US automatic registrations were observed.Results In control images,the technical success rate was 100%(10/10)and median registration error distance was 1.22 mm(0.57—1.88 mm).The technical success rates were affected by each above influencing factor in different degrees,especially position and volumetric scanning angle(40.00%[4/10]and 30.00% [3/10],both P0.05).Change of posture and intercostal increased median registration error distanc(3.01 [2.59—4.49],2.74 [1.66—4.30],both P0.05].Conclusion Under the condition of the same breath,the same position,the same intercostal and maximum volumetric scanning angle,3D-US single-modality images fusion technology can obtain the ideal fused effectiveness.