Template:Ultrasound terms

Ultrasound

• Biparietal diameter - (BPD)
• Crown-Rump Length - (CRL)
• Femur length - (FL) is used to determine fetal age and normal development (small/large/abnormal) parameters. The femur is the longest bone in the body and measurements and reflects the longitudinal growth of the fetus (approximately 14 weeks 1.5 cm - term 7.8 cm). It is one of the four typical ultrasound assessments of fetal size and age: Biparietal Diameter (BPD), Head Circumference (HC), Abdominal Circumference (AC), and Femur Length (FL).
• Functional linear discriminant analysis (FLDA) - new growth assessment technique using serial measurements to discriminate between normal and abnormal fetal growth.
• Head Circumference - (HC)
• Gestational sac - (GS) size
• inversion mode - an ultrasound processing method of volume analysis for the visualization of fluid-filled fetal structures such as; heart chambers, vessel lumen, stomach, gallbladder, renal pelvis, and the bladder. Post-processing inverts the gray scale of the volume voxels showing the normally anechoic structures in 3D or 4D renderings. This technique has been used to identify cardiac anomalies.
• Linear discriminant analysis - (LDA) to longitudinal data (James and Hastie, 2001)
• Mean gestation sac diameter - (MSD)
• Mean yolk sac diameter - (MYD)
• Spatiotemporal image correlation (STIC) - an image acquisition method used mainly for fetal heart analysis. Requires two steps; an automatic volume sweep, then image data analysis according to spatial and temporal domain generating an online dynamic 3D image sequence.
• Transvaginal scan - (TVS)
• Termination of pregnancy - (TOP)