Reference data representative of normal findings at two‐dimensional and three‐dimensional gray‐scale ultrasound examination of the cervix from 17 to 41 weeks' gestation

Abstract

Objectives To create reference values representative of normal findings on two-dimensional (2D) and three-dimensional (3D) transvaginal ultrasound (TVS) examination of the cervix from 17 to 41 weeks' gestation and to determine the agreement between cervical measurements taken by 2D and 3D TVS. Methods results was expressed as the mean (± 2 SDs) difference between the results of the two methods and as the interclass correlation coefficient (inter-CC).Results There was excellent agreement between measurements taken by 3.9 (range, 1.0-6.1) cm, 3.0 (range, 0.4-5.7) cm and 0.8 (range, 0.4-3.4 17-30 weeks to 3.5 (range, 1.8-5.5) cm at 31-40 weeks and to 4.0 (range, 2.8-5.9) cm at 41 weeks. Cervical width was 3.7 (range, 2.3-6.0) cm at 17-30 weeks and 4.5 (range, 2.3-6.1) ) cm (results obtained by 3D ultrasound). Cervical AP diameter and width did not differ between nulliparous and parous women. Median AP diameter increased from 3.0 (range, 2.0-4.6) cm at

Comprimento do colo uterino e dilatação do orifício interno avaliados pela ultra-sonografia bidimensional e tridimensional

“…De acordo com a revisão dos artigos indexados no Medline até março de 2006, oito pesquisas foram encontradas [11][12][13][14][18][19][20][21] . Quatro 11,19-21 delas relataram a aferição do volume da cérvice em gravidez única ou múltipla; quatro [12][13][14]18 focaram a medida do comprimento cervical.…”

“…Vale ressaltar que em nosso estudo, semelhante ao de outros autores 18 , os métodos 2D e 3D demonstraram boa correlação na aquisição das medidas do comprimento cervical. Na comparação das médias das medidas do comprimento do colo, foi detectada diferença estatística testando o plano coronal do exame 3D, não evidenciando diferenças no plano sagital entre os métodos 2D e 3D.…”

“…Na nossa casuística, a média das medidas do comprimento cervical, mensuradas por USG 3D (4,1±0,97 cm), foi superior a 2D (3,9±0,92 cm), confirmando outros resultados descritos na literatura [12][13][14]18 .…”

Three‐dimensional ultrasound assessment of the cervix for predicting time to spontaneous onset of labor and time to delivery in prolonged pregnancy

“…Transvaginal sonography was carried out by a single operator (L.R.) using the same technique as described in detail elsewhere 12,13 . The equipment used was a GE Voluson 730 Expert ultrasound system (GE Healthcare, Zipf, Austria) equipped with a 2.8-10-MHz transvaginal transducer.…”

“…Cervical volume (cm 3 ) and power Doppler flow indices, i.e. vascularization index (VI), flow index (FI) and vascularization flow index (VFI), were calculated using the Virtual Organ Computeraided AnaLysis software (VOCAL TM ) 12,13 . All ultrasound results were unavailable to the clinical staff.…”