The safety of obstetrical ultrasound: a review

Houston, Lauren; Odibo, Anthony O.; Macones, George A.

doi:10.1002/pd.2392

Cited by 47 publications

(37 citation statements)

References 97 publications

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“…The scanning time per visit was as short as possible (less than 20 minutes) and the thermal and mechanical indices were kept below one, in line with the international recommendations for safe scanning. [13][14][15] The 3D datasets obtained were stored and transformed to Cartesian (rectangular) volumes afterwards, to be transferred to the BARCO I-Space (Barco N.V., Kortrijk, Belgium) at the Department of Bioinformatics, Erasmus University Medical Centre, Rotterdam, the Netherlands. This is a four-walled CAVE TM -like (Cave Automatic Virtual Environment) virtual reality system, allowing depth perception and interaction with the projected images.…”

Section: Methodsmentioning

confidence: 99%

An optimal periconception maternal folate status for embryonic size: the Rotterdam Predict study

Uitert

Ginkel

Willemsen³

et al. 2014

BJOG

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MethodsWe recruited women before 8 weeks of gestation and performed weekly three-dimensional ultrasound scans from enrolment up to 13 weeks of gestation. As a measure of embryonic growth, crown-rump length (CRL) measurements were performed using V-Scope software in the BARCO I-Space. Maternal blood was collected to determine first-trimester long-term red blood cell (RBC) folate status. Non-malformed live births were included in the analysis. We calculated quartiles of RBC folate, square root-transformed CRL data and performed multivariable linear mixed model analyses. Conclusions This study suggests that a very high maternal periconception folate status is associated with reduced embryonic size. Whether these effects are beneficial or harmful requires further investigation.

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Section: Methodsmentioning

confidence: 99%

An optimal periconception maternal folate status for embryonic size: the Rotterdam Predict study

Uitert

Ginkel

Willemsen³

et al. 2014

BJOG

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“…6 The social phenomena of increasing maternal age predisposing to abortion, general limitation of family size and heightened expectations of normal outcome have produced increased pressure on the obstetrician, thereby giving more importance to ultrasonography. :…”

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confidence: 99%

Role of Pelvic Sonography in First Trimester Bleeding

Kurmi¹,

Jadhav²,

Misri³

et al. 2015

jemds

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OBJECTIVE:To confirm the clinical diagnosis in patient with first trimester bleeding. To evaluate the role of pelvic ultrasound, in management of first trimester bleeding. To correlate the outcome of pregnancy, with fetal activity seen on pelvic ultrasound. METHODS: Study includes all Obstetric cases attending Bhabha Atomic Research Centre and Hospital with history of bleeding per vaginum in first trimester of pregnancy during the study period October 2011 to September 2013. RESULT: In our study we have evaluated 100 cases of bleeding in the first trimester of pregnancy to know the role of ultrasound examination. On mere clinical examination, it was not possible to diagnose many cases correctly. There was a disparity of 72% between clinical and sonological diagnosis. Out of 86 cases clinically diagnosed as threatened abortion only 50 cases were confirmed as threatened abortion by ultrasonography. Rest 36 cases were misdiagnosed clinically. Sonographically diagnosed 50 cases were followed and all 50cases continued as normal pregnancy. 8 cases of these 50 threatened abortions had chorionic hemorrhage in ultrasonography findings, but all 8 cases also continued as normal pregnancy. These 36 clinically misdiagnosed cases were diagnosed correctly on ultrasonography as 12 cases of complete abortion, 4 cases of incomplete abortion, 1 case of inevitable abortion, 11 cases of missed abortion, 1 case of complete mole and 7 cases of blighted ovum. 1 cases of complete abortion was diagnosed by sonography only. 3 cases were clinically diagnosed as incomplete abortion, but only 1 was confirmed on sonography, rest 2 cases were case of missed abortion and blighted ovum. All 8 cases of blighted ovum was ultrasonography diagnosis only. None of them could be diagnosed clinically. 3 cases of ectopic pregnancy were diagnosed clinically and also confirmed on ultrasonography. 1 case of complete mole was an ultrasonography diagnosis only. CONCLUSION: Bleeding per vaginum in the first trimester is one of the most common causes for the majority of emergency admissions to the obstetrics department and also vaginal bleeding is most frequent indication of first trimester ultrasonography. The common causes of bleeding during first trimester include abortions, ectopic pregnancy and molar pregnancy. Ultrasound is a non-invasive, non-ionizing and easily available method of investigation to assess the patients with first trimester bleeding which is highly accurate in diagnosing the actual causes of bleeding and guides the clinician in choosing the appropriate line of management and prevents mismanagement of the cases. Ultrasound can assess some findings which are helpful in predicting the prognosis of the pregnancy. Life threatening emergency like ectopic when evaluated by ultrasound gives scope for conservative approach without affecting the fertility status.

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“…To date there is no evidence of adverse effects of ultrasound examination in neonates. There have been reports of a mildly increased risk of delayed speech, left handedness in boys and intrauterine growth restriction after fetal exposure to ultrasound 18 . A recent systematic review found that ultrasonography during pregnancy was not associated with adverse perinatal or childhood outcome 19 .…”

Section: Data)mentioning

confidence: 99%

“…The amount of energy absorbed depends on tissue type, duration of exposure and ultrasound mode or route. Doppler imaging, though, has higher output potential compared to standard B-mode imaging, because of its intensity and the small area of tissue being examined 18 . Therefore, keep the duration of exposure to a minimum, especially in Doppler imaging.…”

Section: Data)mentioning

confidence: 99%

“…Regulatory bodies such as the American Institute of Ultrasound in Medicine (AIUM), the British Medical Ultrasound Society (BMUS), European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB), and World Federation for Ultrasound in Medicine and Biology (WFUMB), have published guidelines on mechanical and thermal indices for diagnostic ultrasound. Thermal and mechanical indices less than one are generally accepted as safe 18 . Standard settings should be kept within the range indicated in these guidelines and when adjusting settings during examination one should make sure to adhere to these guidelines, especially during color Doppler examination.…”

Section: Data)mentioning

confidence: 99%

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State of the Art Cranial Ultrasound Imaging in Neonates

Ecury-Goossen

Camfferman

Leijser

et al. 2015

JoVE

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Cranial ultrasound (CUS) is a reputable tool for brain imaging in critically ill neonates. It is safe, relatively cheap and easy to use, even when a patient is unstable. In addition it is radiation-free and allows serial imaging. CUS possibilities have steadily expanded. However, in many neonatal intensive care units, these possibilities are not optimally used. We present a comprehensive approach for neonatal CUS, focusing on optimal settings, different probes, multiple acoustic windows and Doppler techniques. This approach is suited for both routine clinical practice and research purposes. In a live demonstration, we show how this technique is performed in the neonatal intensive care unit. Using optimal settings and probes allows for better imaging quality and improves the diagnostic value of CUS in experienced hands. Traditionally, images are obtained through the anterior fontanel. Use of supplemental acoustic windows (lambdoid, mastoid, and lateral fontanels) improves detection of brain injury. Adding Doppler studies allows screening of patency of large intracranial arteries and veins. Flow velocities and indices can be obtained. Doppler CUS offers the possibility of detecting cerebral sinovenous thrombosis at an early stage, creating a window for therapeutic intervention prior to thrombosis-induced tissue damage. Equipment, data storage and safety aspects are also addressed. Video LinkThe video component of this article can be found at

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The safety of obstetrical ultrasound: a review

Cited by 47 publications

References 97 publications

An optimal periconception maternal folate status for embryonic size: the Rotterdam Predict study

An optimal periconception maternal folate status for embryonic size: the Rotterdam Predict study

Role of Pelvic Sonography in First Trimester Bleeding

State of the Art Cranial Ultrasound Imaging in Neonates

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