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You searched for:"Luciano Pinheiro Filho"
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Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(1):38-43
DOI 10.1590/S0100-72032006000100007
PURPOSE: to determine the intraobserver and interobserver reproducibility of endometrial volume measurements using the VOCAL®-imaging program (Virtual Organ Computer-aided AnaLysis). METHODS: one three-dimensional (3-D) ultrasound dataset of the endometrium was obtained from each of five infertile women with different endometrial volumes. For each 3-D dataset, the endometrial volume was calculated by two different observers using the manual mode in four different rotational steps (30º, 15º, 9º and 6º). Ten measurements were obtained with each method and observer from each 3-D dataset. We have used one-way ANOVA and the Tukey post-test to verify the differences among means and the intraclass correlation coefficient to test reliability. RESULTS: rotational methods employing a rotation step of 30º were associated with lower endometrial volume readings in 3 of the 5 patients. There were no significant differences between the means obtained by the 15º, 9º or 6º step rotation. No significant difference was found between the means obtained by the two different observers. The intraclass correlation coefficients were significantly lower with 30º (all under 0.984) than with the other step rotations (all above 0.996). CONCLUSIONS: the use of a rotational step of 15º or less provides reliable readings of endometrial volume: there were no significant differences between the means calculated by the two observers, associated with highintraclass correlation coefficient (>0.996). We recommend the 15º step rotation because it is quicker to be performed than 6º and 9º.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(1):38-43
DOI 10.1590/S0100-72032006000100007
PURPOSE: to determine the intraobserver and interobserver reproducibility of endometrial volume measurements using the VOCAL®-imaging program (Virtual Organ Computer-aided AnaLysis). METHODS: one three-dimensional (3-D) ultrasound dataset of the endometrium was obtained from each of five infertile women with different endometrial volumes. For each 3-D dataset, the endometrial volume was calculated by two different observers using the manual mode in four different rotational steps (30º, 15º, 9º and 6º). Ten measurements were obtained with each method and observer from each 3-D dataset. We have used one-way ANOVA and the Tukey post-test to verify the differences among means and the intraclass correlation coefficient to test reliability. RESULTS: rotational methods employing a rotation step of 30º were associated with lower endometrial volume readings in 3 of the 5 patients. There were no significant differences between the means obtained by the 15º, 9º or 6º step rotation. No significant difference was found between the means obtained by the two different observers. The intraclass correlation coefficients were significantly lower with 30º (all under 0.984) than with the other step rotations (all above 0.996). CONCLUSIONS: the use of a rotational step of 15º or less provides reliable readings of endometrial volume: there were no significant differences between the means calculated by the two observers, associated with highintraclass correlation coefficient (>0.996). We recommend the 15º step rotation because it is quicker to be performed than 6º and 9º.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(9):673-678
DOI 10.1590/S0100-72032003000900009
PURPOSE: to evaluate the uterine volume in women between 10 and 40 years in order to observe if the uterine volume in adolescents is smaller than the uterine volume in women between 20 and 40 years. We intend to emphasize the differences between the uterine volume of adolescents and that of adult women and to correlate with the immaturity of the genital tract of adolescents regarding gestation and delivery. METHOD: a cross-sectional study, which included 828 patients between 10 and 40 years old divided into two groups and examined using abdominal ultrasound to obtain the uterine volume measure. The first group consisted of 477 (57.7%) adolescents, and the second group of 351 (42.3%) adult women between 20 and 40 years old. In the adolescent group, ultrasound examination was performed by a single observer and in the group of adult women ultrasound examination was performed by a group of observers who used the same methodology as that of group 1. Image Point HX (Hewlett Packard) and Hitachi 525 ultrasound equipment were used with a multiple frequency probe. For the calculation of the uterine volume we used the longitudinal diameter (LD), anteroposterior diameter (APD) and transverse diameter (TD) with the (LD x APD x TD) x 0.45 formula. RESULTS: adolescents aged 10 to 17 years had a smaller uterine volume than women aged 20 to 40 years (p<0.05). Adolescents who delivered twice had a uterine volume similar to that of the patients between 20 and 40 years old with respective mean values of 62.6 ± 20.6 and 69.0±22.9 (p>0.05). CONCLUSION: adolescents less than 18 years old or primiparous have a smaller uterine volume than women between 20 to 40 years old. However, adolescents aged 18 years or older, or secundipara, have a uterine volume similar to that of women aged 20 to 40 years.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(9):673-678
DOI 10.1590/S0100-72032003000900009
PURPOSE: to evaluate the uterine volume in women between 10 and 40 years in order to observe if the uterine volume in adolescents is smaller than the uterine volume in women between 20 and 40 years. We intend to emphasize the differences between the uterine volume of adolescents and that of adult women and to correlate with the immaturity of the genital tract of adolescents regarding gestation and delivery. METHOD: a cross-sectional study, which included 828 patients between 10 and 40 years old divided into two groups and examined using abdominal ultrasound to obtain the uterine volume measure. The first group consisted of 477 (57.7%) adolescents, and the second group of 351 (42.3%) adult women between 20 and 40 years old. In the adolescent group, ultrasound examination was performed by a single observer and in the group of adult women ultrasound examination was performed by a group of observers who used the same methodology as that of group 1. Image Point HX (Hewlett Packard) and Hitachi 525 ultrasound equipment were used with a multiple frequency probe. For the calculation of the uterine volume we used the longitudinal diameter (LD), anteroposterior diameter (APD) and transverse diameter (TD) with the (LD x APD x TD) x 0.45 formula. RESULTS: adolescents aged 10 to 17 years had a smaller uterine volume than women aged 20 to 40 years (p<0.05). Adolescents who delivered twice had a uterine volume similar to that of the patients between 20 and 40 years old with respective mean values of 62.6 ± 20.6 and 69.0±22.9 (p>0.05). CONCLUSION: adolescents less than 18 years old or primiparous have a smaller uterine volume than women between 20 to 40 years old. However, adolescents aged 18 years or older, or secundipara, have a uterine volume similar to that of women aged 20 to 40 years.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(6):437-442
DOI 10.1590/S0100-72032003000600009
PURPOSE: to study the evolution of the resistance and pulsatility indices, maximum velocity, final diastolic velocity and time of acceleration of the middle cerebral artery of fetuses between 22 and 38 weeks of gestation. METHODS: a prospective and longitudinal observational study was conducted on 33 fetuses of normal pregnant women evaluated between 22 and 38 weeks of pregnancy. The gestational age was determined on the basis of the date of the last menstruation and/or by ultrasound examination during the first trimester. Doppler ultrasound examination was performed by a single observer using an Image Point 1800 (Hewlett Packard) apparatus equipped with a multiple frequency transducer. For the acquisition of the Doppler tracing of the middle cerebral artery, the sample indicator was calibrated for a sample volume of 1 mm³ and placed on the anterior middle cerebral artery as close as possible to the skullcap. The insonation angle was kept between 5º and 19º and the filter was adjusted to a frequency of 50-100 Hz. The newborn infants were evaluated in order to confirm that the fetuses were vigorous and adequate for gestational age. RESULTS: the results obtained for the resistance and pulsatility indices revealed a 2nd-degree equation, representing a parabola whose values for the resistance index were 0.81 during the 22nd week and 0.75 during the 38th week. The pulsatility index was 1.59 during the 22nd week and 1.45 during the 38th week. Maximum systolic velocity increased progressively along pregnancy, with values of 26.3 cm/s during the 22nd week and 57.7 cm/s during the 38th week. Final diastolic velocity increased progressively from the 26th week (5.21 cm/s) to term (14.6 cm/s). Acceleration time increased significantly only between 26 and 30 weeks, with values of 0.04 s during the 26th week and 0.05 s during the 30th week. CONCLUSION: it was concluded that the evolution of the resistance and pulsatility indices and of maximum systolic velocity were similar to those of most studies described in the literature. Acceleration time presented few modifications during the evaluated gestational weeks.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(6):437-442
DOI 10.1590/S0100-72032003000600009
PURPOSE: to study the evolution of the resistance and pulsatility indices, maximum velocity, final diastolic velocity and time of acceleration of the middle cerebral artery of fetuses between 22 and 38 weeks of gestation. METHODS: a prospective and longitudinal observational study was conducted on 33 fetuses of normal pregnant women evaluated between 22 and 38 weeks of pregnancy. The gestational age was determined on the basis of the date of the last menstruation and/or by ultrasound examination during the first trimester. Doppler ultrasound examination was performed by a single observer using an Image Point 1800 (Hewlett Packard) apparatus equipped with a multiple frequency transducer. For the acquisition of the Doppler tracing of the middle cerebral artery, the sample indicator was calibrated for a sample volume of 1 mm³ and placed on the anterior middle cerebral artery as close as possible to the skullcap. The insonation angle was kept between 5º and 19º and the filter was adjusted to a frequency of 50-100 Hz. The newborn infants were evaluated in order to confirm that the fetuses were vigorous and adequate for gestational age. RESULTS: the results obtained for the resistance and pulsatility indices revealed a 2nd-degree equation, representing a parabola whose values for the resistance index were 0.81 during the 22nd week and 0.75 during the 38th week. The pulsatility index was 1.59 during the 22nd week and 1.45 during the 38th week. Maximum systolic velocity increased progressively along pregnancy, with values of 26.3 cm/s during the 22nd week and 57.7 cm/s during the 38th week. Final diastolic velocity increased progressively from the 26th week (5.21 cm/s) to term (14.6 cm/s). Acceleration time increased significantly only between 26 and 30 weeks, with values of 0.04 s during the 26th week and 0.05 s during the 30th week. CONCLUSION: it was concluded that the evolution of the resistance and pulsatility indices and of maximum systolic velocity were similar to those of most studies described in the literature. Acceleration time presented few modifications during the evaluated gestational weeks.
