Contemporary clinical applications of spatio-temporal image correlation in prenatal diagnosis

Espinoza, Jimmy

doi:10.1097/gco.0b013e328342ef38

Cited by 22 publications

(21 citation statements)

References 79 publications

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“…In case of active fetal movements, volume can be acquired using the 3D live mode (4D) facility rather than using the static 3D mode. This option has demonstrated its clinical value when reconstructing the fetal face 5 and/or the cardiac structures using the spatio-temporal-image correlation (STIC) technique [6][7][8][9] . Tonni et al 5 have demonstrated that 3DUS have enhanced the diagnostic accuracy in detecting cleft lip (CL) and cleft palate (CP) in a routine second trimester scan on low-risk pregnant women.…”

mentioning

confidence: 99%

Three-dimensional ultrasound in obstetrics practice: myth or reality?

Tonni¹,

Júnior²

2014

Rev. Bras. Ginecol. Obstet.

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Since the introduction of sonography into clinical practice, two-dimensional ultrasound (2DUS) has represented the standard application in obstetrics care. Nonetheless, technological advancement has brought to healthcare givers a new opportunity that is three-dimensional ultrasound (3DUS). Are there nowadays convincing evidence that 3DUS offer advantages over 2DUS and have gained recognized as well as well established role to justify its inclusion into routine obstetrics practice? The technological advancement reached by 3DUS warrant appropriate operator training program in order to acquire expertise to manage ultrasound applications and software. When this "goal" is reached, there is no doubt concerning the fact that one of the main advantages of 3DUS over 2DUS is represented by anatomic acquisition of a volume. Once a volume data set has been acquired, it can be sectioned on-line or transferred to an external personal computer for post-processing analysis. At this stage, "navigation" within the volume is possible, and operators can then freely sectioned or rendered the volume on-demand. This is of dramatic importance in teaching and training clinical setting. Furthermore, volume can be acquired on standardized plane at remote site even by inexperienced operator in 3DUS and send for expert consultation using telemedicine. Although stored volume data sets are large, up to 10 megabyte, they can be compressed to about 15 to 20% of the original file size and submitted via Digital Imaging and Communications in Medicine (DICOM) technology for off-line consultation without noticeable loss of details or image quality 1 . Moreover, volume data sets can be shared by expert on dedicated website and be used in multicenter studies while demonstrating a high sensitivity and reliability 2,3 . 3DUS with its applications allow operators a simultaneous and less time consuming (when compared with 2DUS) rendering of the anatomical landmarks in three orthogonal planes when using the multiplanar mode. In such case, the region of interest is displayed on the upper left quadrant on the ultrasound video equipment while the sagittal plane, the coronal and the axial are rendered in plane A, plane B and plane C, respectively. The planes obtained from the 3D volume are parallel and not oblique or at an angle, as is the case with conventional 2DUS. In addition, when comparing 2DUS vs. 3DUS studies of pathological cases, one of the most important advantages offered by "navigating" inside the volumes generated by 3DUS is the ability to follow the green "reference" dot that indicates the

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confidence: 99%

Three-dimensional ultrasound in obstetrics practice: myth or reality?

Tonni¹,

Júnior²

2014

Rev. Bras. Ginecol. Obstet.

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“…Almost 2 decades ago, Sharland and Allan [22] already demonstrated that the enthusiasm and attitude of the physicians involved in fetal heart screening was often reflected in the results. The figures produced with local STIC acquisition by a general obstetrician performing antenatal ultrasound and subsequent remote analysis by an expert are similar to those from specialized centers when examining fetuses from 12 weeks to near term [23,24] . The second point to consider is this: should the cardiac structures/views included in the volume datasets for remote analysis provide enough information to carry out an extended cardiac examination or is it also necessary to generate diagnostic rendering views of the fetal heart or attempt to accomplish a complete fetal echocardiography [17] ?…”

Section: Once a Volume Has Been Acquired And Transmitted Via The Intementioning

confidence: 61%

Current Experience and Prospect of Internet Consultation in Fetal Cardiac Ultrasound

Viñals¹

2011

Fetal Diagn Ther

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Objective: Internet consultation with volume ultrasound is one of the strategies studied to attempt to improve prenatal detection of congenital heart defects (CHD). Methods: This methodology is a form of telemedicine in which a volume block of the fetal heart (either static 3D or STIC volume dataset) is acquired by an operator (non-expert) and transmitted via internet for remote consultation. Naturally, this methodology is suitable for remote locations or those with less access to specialists able to confirm or rule out a prenatal diagnosis of CHD. Results: The use of internet consultation demonstrates that some intracardiac anomalies can be ruled out and others confirmed, thus enabling the parents to prepare for the likely outcome of the pregnancy and to modify the perinatal management. Conclusion: Internet consultation offers a good alternative for fetuses from more isolated locations with a high risk of CHD. Moreover, this methodology could become an interesting tool for distance learning and training.

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“…So far, there have not been any studies in the literature that would make it possible to affirm that the STIC technology is superior to or replaces 2D echocardiography. Nevertheless, because it is less dependent on the operator,19 who only becomes capable of collecting heart volume data after training, and because of the possibility of having the data remotely analyzed by specialists at referral centers, the methodology becomes attractive and can contribute towards screening for CHDs at locations without fetal cardiology and pediatric specialists.…”

Section: Assessment Of Chds By Means Of Sticmentioning

confidence: 99%

The value of 3D and 4D assessments of the fetal heart

Júnior

Rôlo

Rocha

et al. 2014

IJWH

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The objective of this review was to demonstrate the main tools of three- and four-dimensional ultrasonography, using the spatiotemporal image correlation software and its respective applications for assessing the fetal heart and its vascular connections, along with its potential contribution towards screening for congenital heart diseases. Today, conventional, two-dimensional, echocardiography continues to be the gold standard for diagnosing congenital heart diseases. However, recent studies have demonstrated that spatiotemporal image correlation offers some advantages that boost two-dimensional accuracy in detecting congenital heart diseases, given that the fetal heart assessment can be completed in the absence of the patient (offline) and be discussed by different examiners. Additionally, data volumes can be sent for analysis in reference centers via internet links. Spatiotemporal image correlation also enables direct measurement of heart structures in rendering mode, such as the interventricular septum and the annulus of the atrioventricular valves. Furthermore, it enables assessment of cardiac function when used in association with the virtual organ computer-aided analysis software, thus making it possible to calculate the total systolic function, ejection fraction, and cardiac output.

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Contemporary clinical applications of spatio-temporal image correlation in prenatal diagnosis

Abstract: Four-dimensional fetal echocardiography with STIC may facilitate the examination of the fetal heart and could potentially increase the detection rate of CHDs.

Cited by 22 publications

References 79 publications

Three-dimensional ultrasound in obstetrics practice: myth or reality?

Three-dimensional ultrasound in obstetrics practice: myth or reality?

Current Experience and Prospect of Internet Consultation in Fetal Cardiac Ultrasound

The value of 3D and 4D assessments of the fetal heart

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