OC20.08: 3D ultrasound does not improve diagnosis of retained placental tissue compared to 2D ultrasound

2013 ◽  
Vol 42 (s1) ◽  
pp. 42-42
Author(s):  
J. Belachew ◽  
K. Eurenius ◽  
O. Axelsson ◽  
A. Mulic-Lutvica
Keyword(s):  
Placental Tissue ◽  
3D Ultrasound ◽  
2D Ultrasound ◽  
Retained Placental Tissue

A Phantom Study Comparing Ultrasound-Guided Liver Tumor Puncture Using New Real-Time 3D Ultrasound and Conventional 2D Ultrasound

2011 ◽  
Vol 196 (6) ◽  
pp. W753-W757 ◽  
Author(s):  
Katsutoshi Sugimoto ◽  
Fuminori Moriyasu ◽  
Junji Shiraishi ◽  
Masahiko Yamada ◽  
Yasuharu Imai
Keyword(s):  
Real Time ◽  
Liver Tumor ◽  
3D Ultrasound ◽  
Phantom Study ◽  
Ultrasound Guided ◽  
2D Ultrasound

scholarly journals A left ventricular phantom for 3D echocardiographic twist measurements

2020 ◽  
Vol 65 (2) ◽  
pp. 209-218
Author(s):  
Johannes Just Hjertaas ◽  
Knut Matre
Keyword(s):  
Stroke Volume ◽  
Spatial Resolution ◽  
Reference Method ◽  
3D Ultrasound ◽  
Left Ventricular ◽  
Apical Rotation ◽  
Mock Circulation ◽  
Custom Made ◽  
Wide Range ◽  
2D Ultrasound

AbstractTraditional two-dimensional (2D) ultrasound speckle tracking echocardiography (STE) studies have shown a wide range of twist values, also for normal hearts, which is due to the limitations of short-axis 2D ultrasound. The same limitations do not apply to three-dimensional (3D) ultrasound, and several studies have shown 3D ultrasound to be superior to 2D ultrasound, which is unreliable for measuring twist. The aim of this study was to develop a left ventricular twisting phantom and to evaluate the accuracy of 3D STE twist measurements using different acquisition methods and volume rates (VR). This phantom was not intended to simulate a heart, but to function as a medium for ultrasound deformation measurement. The phantom was made of polyvinyl alcohol (PVA) and casted using 3D printed molds. Twist was obtained by making the phantom consist of two PVA layers with different elastic properties in a spiral pattern. This gave increased apical rotation with increased stroke volume in a mock circulation. To test the accuracy of 3D STE twist, both single-beat, as well as two, four and six multi-beat acquisitions, were recorded and compared against twist from implanted sonomicrometry crystals. A custom-made software was developed to calculate twist from sonomicrometry. The phantom gave sonomicrometer twist values from 2.0° to 13.8° depending on the stroke volume. STE software tracked the phantom wall well at several combinations of temporal and spatial resolution. Agreement between the two twist methods was best for multi-beat acquisitions in the range of 14.4–30.4 volumes per second (VPS), while poorer for single-beat and higher multi-beat VRs. Smallest offset was obtained at six-beat multi-beat at 17.1 VPS and 30.4 VPS. The phantom proved to be a useful tool for simulating cardiac twist and gave different twist at different stroke volumes. Best agreement with the sonomicrometer reference method was obtained at good spatial resolution (high beam density) and a relatively low VR. 3D STE twist values showed better agreement with sonomicrometry for most multi-beat recordings compared with single-beat recordings.

scholarly journals Abdominal Tumor in a 14-Year-Old Adolescent: Imperforate Hymen, Resulting in Hematocolpos—A Case Report and Review of the Literature

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
George Marios Makris ◽  
Doris Macchiella ◽  
Dennis Vaidakis ◽  
Charalampos Chrelias ◽  
Marco Johannes Battista ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
3D Ultrasound ◽  
Medical Advice ◽  
Female Adolescents ◽  
Review Of The Literature ◽  
Abdominal Tumor ◽  
Imperforate Hymen ◽  
Abdominal Masses ◽  
2D Ultrasound

Background. Abdominal masses in female adolescents are uncommon. A rare cause of this condition is hematocolpos due to imperforate hymen.Case. We present a case of an unusually massive asymptomatic abdominal bulk in a 14-year-old female patient, who sought for medical advice after unusual abdominal pain lasting for few weeks. The patient was otherwise asymptomatic, apart from an unusual dramatic expansion of her abdominal wall during the last month. We describe the surgical management and the follow-up of the patient.Summary and Conclusion. Clinicians should keep in mind that an imperforate hymen can cause abdominal growth due to hematocolpos and include it in the differential diagnosis of such a clinical entity in female adolescents. 2D ultrasound is usually efficient for the confirmation of the diagnosis of hematocolpos, but 3D ultrasound is more accurate. Wide excision should be undertaken, as an initial approach, to avoid recurrence.

scholarly journals Virtual embryoscope for detection of structural abnormalities in first trimester pregnancy

2017 ◽  
Vol 6 (5) ◽  
pp. 1924
Author(s):  
Sumesh Choudhary ◽  
Vineet Mishra ◽  
Rohina Aggarwal
Keyword(s):  
First Trimester ◽  
3D Ultrasound ◽  
P Value ◽  
Detection Rates ◽  
Significant Difference ◽  
Structural Abnormalities ◽  
Innovative Tool ◽  
2D Ultrasound ◽  
Additional Value ◽  
A Prospective Study

Background: To determine whether there is an additional value of virtual embryoscopy with 3Dimensional (3D) ultrasound above (2D) ultrasound regarding detection rates of structural abnormalities in first trimester pregnancy.Methods: This was a prospective study consisting of 52 pregnant women with gestational age ranging from 6 to 12 weeks. 2D and 3D ultrasound scan was performed using GE voluson E8 transvaginal probe. All scans were evaluated by ten gynecologists trained in USG. The observations were noted and compared for anatomical details and detection of structural defects.Results: It was found that images were seen well with 3D (virtual embryoscope). i.e. maximum count 19 in the table and there is statistically significant difference between 3D and 2D images with a p-value <0.01 at 95% confidence interval (CI).Conclusions: Virtual embryoscope is an innovative tool for evaluation of developing embryo and early foetal morphology. The advantages are the ability to reconstruct 3D images with the stored scanned volume and examine without having to rescan the patient.

scholarly journals Ultrasound Imaging of Postpartum Hemorrhage

2015 ◽  
Vol 9 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Wiku Andonotopo ◽  
Prachi Kasar
Keyword(s):  
Ultrasound Imaging ◽  
Postpartum Hemorrhage ◽  
Early Stage ◽  
Color Doppler ◽  
Placental Tissue ◽  
3D Ultrasound ◽  
Diagnosis And Treatment ◽  
Postpartum Bleeding ◽  
Lower Genital Tract

ABSTRACT The etiology of postpartum hemorrhage (PPH) is diverse and management depends on identifying the cause and tailoring treatment appropriately. The major causes of PPH are uterine atony, endometritis, retained placental tissue, placental abnormalities, i.e. placenta accreta, increta and percreta, subinvolution of the placental implantation site, arteriovenous malformation (AVM), lower genital tract trauma, uterine abnormalities, bleeding disorders, coagulopathies and use of anticoagulants. Use of imaging modalities (i.e. ultrasound scanning and color and pulsed Doppler) at an early stage in the search for the etiology of PPH helps to decrease morbidity and mortality. This article reviews the differential diagnoses for bleeding in the postpartum period and assesses the role of ultrasound in the diagnosis and treatment of postpartum bleeding. By using illustrative images, the reader will be able to correlate findings on B-mode, color Doppler and 3D ultrasound in diagnosis and treatment of postpartum bleeding. It is important to be aware of the appearance of normal postpartum uterus to avoid misdiagnosis. How to cite this article Kasar P, Andonotopo W, Kupesic Plavsic S. Ultrasound Imaging of Postpartum Hemorrhage. Donald School J Ultrasound Obstet Gynecol 2015;9(2):175-187.

scholarly journals Hysteroscopy to identify retained placental tissue and excision in secondary post-partum haemorrhage

2020 ◽  
Vol 9 (5) ◽  
pp. 1847
Author(s):  
Pratibha Devabhaktuni ◽  
Padmaja Allani
Keyword(s):  
Caesarean Delivery ◽  
Postpartum Haemorrhage ◽  
Post Partum ◽  
Uterine Fibroids ◽  
Uterine Cavity ◽  
Placental Tissue ◽  
Complete Removal ◽  
Time Treatment ◽  
Products Of Conception ◽  
Retained Placental Tissue

Background: Most cases of secondary postpartum haemorrhage (PPH) are due to retained placental products (RPP). This study had a crop of five cases of secondary PPH, referral cases, during a period of six months during 2006. Four cases were following a caesarean delivery and in one, sub mucous and intra mural, uterine fibroids, caused retained placental tissue by distortion of the uterine cavity. Objectives of this study were to evaluate the feasibility of hysteroscopy to identify the retained placental products in cases of secondary postpartum haemorrhage. Verification of complete removal of RPP by reinsertion of hysteroscope, after removal of RPP by using a sponge holder, or curette.Methods: Trans vaginal ultrasonography (TVS) identified echogenic retained products of conception in all cases. Surgical profile investigations were done as per protocol. Transfusion of blood products was needed in some. Bettocchi 5 mm continuous flow hysteroscope (Karl Storz) was used. Storz endomat hysteroflator was used for irrigation and aspiration.Results: Hysteroscopic guided excision of the placental tissue was one-time treatment in four of study cases, and one needed a second hysteroscopic excision. Secondary PPH occurred at varying periods after the caesarean delivery, one week in one, two weeks in one case, three weeks in two cases and one woman was admitted with retained placenta, primary PPH continuing to secondary PPH. Hysteroscopy done during the puerperal period, in cases of secondary PPH, had certain challenges to cope with.Conclusions: Hysteroscopic guided excision of the retained placental tissue was successful in all the five cases with secondary postpartum haemorrhage. Hysteroscopy is an excellent procedure in cases of secondary PPH. We request guidelines committees to consider including hysteroscopic guided removal of retained placental products, in the algorithm of management of secondary PPH.

Oriented 3D Ultrasound for Central Venous Cannulation Using an Augmented 2D Ultrasound System

2019 ◽  
Vol 26 (10) ◽  
pp. 1173-1176
Author(s):  
Joshua S. Broder ◽  
Matthew R. Morgan ◽  
Elias J. Jaffa ◽  
Rebecca G. Theophanous
Keyword(s):  
3D Ultrasound ◽  
Venous Cannulation ◽  
Central Venous Cannulation ◽  
Central Venous ◽  
2D Ultrasound ◽  
Ultrasound System
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