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Re: May'98 Case of the Month From: DuBose, Terry (DuboseTerryJ@uams.edu) Wed Apr 26 10:16:13 2006 Messages sorted by: [ date ][ thread ][ subject ][ author ] Next message: NOWELL ONA: "New Generation of Sonographers" Previous message: Victoria Hospodar Valentine: "Re: Sopranos" Unfortunately, I just noticed there was a misalignment of two columns in the previous posting... here is another copy of those weeks. Fetal Age and Age Range Analysis* -- BASIC BABY © LMP Week BPD mm 3D-BPD mm OFD mm VCD mm CV mm3 THC* mm Hadlock HC ** mm CHC mm CERB mm BIOD mm FSL mm Fem mm Hum mm ADA mm AC mm LMP WEEK ARA Time-line 23 56 56 71 42 93 199 210 154 24 38 37 40 38 58 181 23 22 53 53 67 40 78 188 199 146 22 36 34 37 36 54 170 22 21 49 50 62 38 65 175 188 137 21 34 32 35 34 51 160 21 Instructions: To perform age range analysis (ARA) for each examination: Measure parameters and mark the parameter's sizes in the table to determine each parameter's age, and average all parameter ages; interpolate for more accuracy. Us a straight edge to place symbols in the time-line. Normal fetuses will form a cluster about the LMP age estimated from 1st sonographic examination. Use single table to track growth series for each fetus. IUGR will trail LMP age. Range should be < ± 10% (20%) of AA. ARA: To determine the relative location of any parameter in the time-line distribution, use the following formula: (Parameter age - AA)/(AA x 0.05) = Location in standard deviations (SD) * Transverse HC mid-skull bones' edges' ellipse. Table values from single population (n=9,000+), excepting Hadlock, et al outer HC. DuBose: FETAL SONOGRAPHY, Chapter 7 Size/Age Analysis; W. B. Saunders Co. 1996. This table is a manual version of BASIC BABY© fetal size/analysis software. ** Adapted from Hadlock, Deter, Harrist & Park: Fetal head circumference: Relation to menstrual age. AJR 138:649, 1982 (Outer skull perimeter) Table legend Parameter Symbols Parameter Name Measurements in mm. GSD G Gestational sac diameter Mean of two diameters. CRL R Crown-rump length Top of head to rump; do not include legs E/FHR E Embryofetal heart rate M-mode beats per minute BPD B Biparietal diameter Leading edge to leading edge (outer to inner) BPD 3-D 3 3-D BPD correction Average (OFD + BPD + VCD)/3 = BPD OFD O Occipitofrontal diameter Middle of frontal to middle of occipital bones VCD V Vertical cranial diameter Height of coronal triangle in fetal head. THC T Transverse head circumference THC = (OFD + BPD) x 1.57 CV V Cranial volume CV = OFD x BPD x VCD x 0.5555 CHC C Coronal head circumference CHC = (VCD + BPD) x 1.57 CERB c Cerebellar transverse diameter Transverse cerebellar diameter BD b Binocular diameter Outer-to-outer edges of the binocular globes FSL S Fractional spine length Seven thoracolumbar vertebral bodies and spaces Fem F Femur length Length of femoral diaphysis Hum H Humerus length Length of humeral diaphysis AC a Abdominal circumference AC = d1 + d2 x 1.57 ADA D Abdominal diameter average Average transverse and AP diameters (d1+d1)/2 Ave.Age AA Average age in LMP weeks Average of multiple parameter's ages LMP M Last Menstrual Period age May be estimated from 1st sonographic study. Range [ ] Range of ages Range normally is less than 20% of Ave.Age Instructions: To perform age range analysis (ARA) for each examination: Measure parameters and mark the parameter's sizes in the table to determine each parameter's age, and average all parameter ages; interpolate for more accuracy. Us a straight edge to place symbols in the time-line. Normal fetuses will form a cluster about the LMP age estimated from 1st sonographic examination. Use single table to track growth series for each fetus. IUGR will trail LMP age. Range should be < ± 10% (20%) of AA. ARA: To determine the relative location of any parameter in the time-line distribution, use the following formula: (Parameter age - AA)/(AA x 0.05) = Location in standard deviations (SD) Terry J. DuBose, M.S., RDMS, FSDMS, FAIUM Associate Professor & Director Diagnostic Medical Sonography Program University of Arkansas for Medical Sciences, CHRP 4301 West Markham St. Mail Slot #563 Little Rock, Arkansas, 72205 USA 501-686-6510 DuBoseTerryJ@UAMS.edu http://www.uams.edu/chrp/sonography/ http://www.obgyn.net/us/panel/panel.htm http://www.io.com/~dubose/ --------------------------------------------------------------- ________________________________ --------------------------------------------------------------- --------------------------------------------------------------- From: Swati Banerjee [mailto:swatibanerjee@apollohospitals.com] Sent: Tuesday, April 25, 2006 11:19 PM To: DuBose, Terry Subject: Re: May'98 Case of the Month Thank you for the details Warm regards Swati -----Original Message----- From: DuBose, Terry [mailto:DuboseTerryJ@uams.edu] Sent: Monday, April 24, 2006 8:49 PM To: swatibanerjee@apollohospitals.com; obgyn-US@OBGYN.net Subject: Re: May'98 Case of the Month Here are some measurements for weeks 21-13. Fetal Age and Age Range Analysis* BASIC BABY © LMP Week BPD mm 3D-BPD mm THC* mm Hadlock HC ** mm Fem mm Hum mm AC mm LMP WEEK ARA Time-line 23 56 56 210 154 38 58 23 22 53 53 199 146 36 54 22 21 49 50 188 137 34 51 21 Terry J. DuBose, M.S., RDMS, FSDMS, FAIUM Associate Professor & Director Diagnostic Medical Sonography Program University of Arkansas for Medical Sciences, CHRP 4301 West Markham St. Mail Slot #563 Little Rock, Arkansas, 72205 USA 501-686-6510 DuBoseTerryJ@UAMS.edu http://www.uams.edu/chrp/sonography/ http://www.obgyn.net/us/panel/panel.htm http://www.io.com/~dubose/ --------------------------------------------------------------- ________________________________ --------------------------------------------------------------- --------------------------------------------------------------- From: Swati Banerjee [mailto:swatibanerjee@apollohospitals.com] Sent: Monday, April 24, 2006 5:32 AM To: obgyn-US@OBGYN.net Subject: May'98 Case of the Month What should be the corresponding BPD head circumference, abdominal circumference for a Indian baby with 22 weeks of gestation -- ========================== ===================== Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. ========================== ===================== ========================== ===================== Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. ========================== ===================== Next message: NOWELL ONA: "New Generation of Sonographers" Previous message: Victoria Hospodar Valentine: "Re: Sopranos"

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