scholarly journals Three-dimensional Ultrasound in Infertility

2007 ◽  
Vol 1 (3) ◽  
pp. 80-87
Author(s):  
Mona Zvanca
Keyword(s):  
Side Effects ◽  
Good Practice ◽  
Three Dimensional ◽  
Uterine Cavity ◽  
3D Ultrasound ◽  
Ovarian Cysts ◽  
High Quality ◽  
Ultrasound Machine ◽  
Good Image ◽  
Uterine Anomalies

Abstract Moving forward from the first approach of three dimensional ultrasound, as a new gadget for technicians, the method makes proof of its use in an increasing number of medical fields. Aim The present paper, and its graphic back-up, are intended as a visual testimony of the fact that 3D ultrasound is much more than a simple generator of “nice”, commercial, images. Moreover, its use may be extended from obstetrics to gynecological pathology, especially in cases related to infertility. Material and methods we performed a review of the main local infertility causes and their perception by the three dimensional ultrasound, as compared to the conventional methods. General literature citations were completed with personal cases and images. In our research we used a Kretz – Voluson Expert 730 ultrasound machine with a full logistic equipment. Our database was completed over a period of 18 months and included various pathology, such as uterine anomalies, fibroids, polyps, ovarian cysts and many others. Results Three dimensional ultrasound represents the best tool in evaluating the uterine cavity, the endometrium, assessing its volume and vascularity pattern. It also offers a very good image of the uterine structure, the adnexal morphology and their relationship. It performs a thorough pelvic assessment by a single examination. Moreover, it may realize a histerosalpingography, which is as efficient as the radiological method, but easier and with less side effects. Conclusions Even though it is technically more difficult and time consuming, a good practice and a high quality ultrasound equipment offer a series of benefits over any other kind of investigation.

scholarly journals What is the Role of Three-dimensional Ultrasound in Reproductive Medicine?

2010 ◽  
Vol 4 (2) ◽  
pp. 169-177
Author(s):  
Po Mui Lam ◽  
Christopher Haines
Keyword(s):  
Reproductive Medicine ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Three Dimensional ◽  
Uterine Cavity ◽  
3D Ultrasound ◽  
Polycystic Ovaries ◽  
Uterine Anomalies ◽  
3D Color Doppler

Abstract This article reviews the merits of three-dimensional (3D) ultrasound and thereby establishes its clinical and research role in reproductive medicine. Its main clinical applications include the assessment for uterine anomalies and intrauterine pathology, especially, if combined with the procedure of saline infusion into the uterine cavity. Moreover, 3D color Doppler sonography is an exciting research tool for the evaluation of endometrial receptivity, ovarian reserve, and polycystic ovaries.

Use of ultrasound imaging for the diagnosis of abnormal uterine bleeding in the bonnet macaque (Macaca radiata)

2016 ◽  
Vol 51 (1) ◽  
pp. 65-74
Author(s):  
Uddhav K Chaudhari ◽  
M Imran ◽  
Dhananjay D Manjramkar ◽  
Siddhanath M Metkari ◽  
Nilesh P Sable ◽  
...  
Keyword(s):  
Endometrial Hyperplasia ◽  
Transvaginal Ultrasound ◽  
Uterine Cavity ◽  
Abnormal Uterine Bleeding ◽  
3D Ultrasound ◽  
Uterine Bleeding ◽  
Colour Doppler ◽  
Endometrial Polyps ◽  
Non Invasive ◽  
Uterine Anomalies

Ultrasound is a powerful, low-cost, non-invasive medical tool used by laboratory animal veterinarians for diagnostic imaging. Sonohysterography and transvaginal ultrasound are frequently used to assess uterine anomalies in women presenting with abnormal uterine bleeding (AUB). In the present study, we have evaluated the abdominal ultrasound of bonnet monkeys ( n = 8) showing spontaneous ovulatory ( n = 5) and anovulatory ( n = 3) AUB. The ovulatory ( n = 5) macaques showed cyclic AUB for 7–8 days. The anovulatory ( n = 3) macaques had irregular AUB with menstrual cycles of 40–45 days. The B-mode abdominal, colour Doppler and 3D ultrasound scans were performed during the proliferative phase of the menstrual cycle. Ultrasound examination revealed endometrial polyps in five macaques and endometrial hyperplasia in three animals. The width and length of endometrial polyps was around 0.5–1 cm (average 0.51 ± 0.23 cm × 0.96 ± 0.16 cm) with significant increase in endometrial thickness ( P < 0.0002). 3D ultrasound also showed a homogeneous mass in the uterine cavity and colour Doppler ultrasound showed increased vascularity in the endometrial polyps. Endometrial hyperplasia characteristically appeared as a thickened echogenic endometrium ( P < 0.0002). This study demonstrates the use of non-invasive ultrasound techniques in the diagnosis of AUB in macaques.

scholarly journals Critical Role of 3D ultrasound in the diagnosis and management of Robert’s uterus: a single-centre case series and a review.

2021 ◽  
Vol 13 (1) ◽  
pp. 41-49
Author(s):  
M. Deenadayal ◽  
V. Günther ◽  
I. Alkatout ◽  
D. Freytag ◽  
A. Deenadayal-Mettler ◽  
...  
Keyword(s):  
Correct Diagnosis ◽  
Critical Role ◽  
Three Dimensional ◽  
Case Series ◽  
Uterine Cavity ◽  
Laparoscopic Hysterectomy ◽  
3D Ultrasound ◽  
Magnetic Resonance Imaging Mri ◽  
Treatment Procedures

A septate uterus with a non-communicating hemicavity was first described by Robert in 1969/70 as a specific malformation of the uterus. The condition is commonly associated with a blind uterine hemicavity, unilateral haematometra, a contralateral unicornuate uterine cavity and a normal external uterine fundus. The main symptoms are repetitive attacks of pain at four-weekly intervals around menarche, repeated dysmenorrhea, recurrent pregnancy loss and infertility. In this report, we review the disease, its diagnosis and treatment, and describe five cases of Robert’s uterus. Three dimensional (3D) ultrasound (US) imaging was performed by the transvaginal route in four cases. In the fifth case of a 13-year-old girl, we avoided the vaginal route and magnetic resonance imaging (MRI) and 3D transrectal US yielded the correct diagnosis. The following treatment procedures were undertaken: laparoscopic endometrectomy, hysteroscopic septum resection, laparoscopic uterine hemicavity resection and total laparoscopic hysterectomy (TLH). The diagnosis and optimum treatment of Robert’s uterus remains difficult for clinicians because of its rarity. A detailed and careful assessment by 3D US should be performed, followed by hysteroscopy in combination with laparoscopy, to confirm the diagnosis.

scholarly journals The Role of Three-dimensional Ultrasound in the Assessment of Congenital Uterine Anomalies

2012 ◽  
Vol 6 (4) ◽  
pp. 415-423
Author(s):  
Sarah Tabi
Keyword(s):  
Three Dimensional ◽  
3D Ultrasound ◽  
Ultrasound Images ◽  
Septate Uterus ◽  
Saline Infusion Sonography ◽  
Unicornuate Uterus ◽  
Uterine Anomalies ◽  
Different Types ◽  
2D Ultrasound

ABSTRACT Three-dimensional (3D), two-dimensional (2D) ultrasound and saline infusion sonography (SIS) are beneficial tools in diagnosing congenital uterine anomalies. This article illustrates six various case scenarios based on 3D ultrasound images in order to review the concepts of ultrasound diagnosis of congenital uterine anomalies and apply it to the presented case studies. These cases scenarios educate the reader on arcuate uterus, septate uterus, bicornuate uterus, didelphic uterus, uterus duplex and unicornuate uterus. This article also presents the sequence of embryologic events leading to the congenital uterine anomalies. The role of 3D ultrasound in diagnosis and treatment of congenital uterine anomalies is presented, along with its advantages over 2D ultrasound, SIS, X-ray hysterosalpingography, magnetic resonance imaging, hysteroscopy and laparoscopy. The effects of hysteroscopic metroplasty on fertility are also illustrated and discussed. After this case-based discussion is completed, the readers will be able to make a differential diagnosis of the different types of congenital uterine anomalies. How to cite this article Tabi S, Kupesic Plavsic S. The Role of Three-dimensional Ultrasound in the Assessment of Congenital Uterine Anomalies. Donald School J Ultrasound Obstet Gynecol 2012;6(4):415-423.

scholarly journals Virtual hysteroscopy: a new non invasive approach for the assessment of uterine cavity

2017 ◽  
Vol 19 (2) ◽  
pp. 216 ◽  
Author(s):  
Paulo Sergio Cossi ◽  
Heron Werner ◽  
Alberto Borges Peixoto ◽  
Wellington P Martins ◽  
Edward Araujo Júnior
Keyword(s):  
Three Dimensional ◽  
Uterine Cavity ◽  
Premenopausal Women ◽  
Invasive Approach ◽  
Non Invasive ◽  
Uterine Anomalies ◽  
Detailed Assessment ◽  
Diagnostic Hysteroscopy ◽  
Scan Data ◽  
Endometrial Pathology

Endometrial pathology is frequent in premenopausal women and the diagnostic hysteroscopy is considered the gold standard for assessing endometrial cavity and congenital uterine anomalies. However it is an invasive and uncomfortable procedure. Saline contrast hysterosalgingography and hysterosalpingo-contrast sonography allow detailed assessment of the uterine cavity. We propose a virtual hysteroscopy from three-dimensional saline and three-dimensional hysterosalpingo-contrast sonography scan data to generate a virtual reality as a new noninvasive procedure for assessing the uterine cavity in uterine congenital anomaly and endometrial pathology cases as well.

scholarly journals Diagnostic Accuracy of 3D-transvaginal Ultrasound Compared to Hysteroscopy in Detecting Uterine Abnormalities Before ICSI

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M M Alsherbiny ◽  
A A M Riad ◽  
H A Hamdoun
Keyword(s):  
Diagnostic Accuracy ◽  
Transvaginal Ultrasound ◽  
Three Dimensional ◽  
Uterine Cavity ◽  
University Hospital ◽  
Uterine Disease ◽  
Ibn Sina ◽  
Volume Imaging ◽  
Uterine Anomalies ◽  
3D Sonography

Abstract Introduction Various forms of female infertility were associated with congenital uterine anomalies and acquired uterine disease. In fact, the myometrium can only be indirectly imaged by X-ray hysterosalpingography but is directly seen on Ultrasonography. More recently, further advances in ultrasonography have led to three-dimensional multiplanar or volume imaging (three-dimensional ultrasonography [3DUS]) in which sonographic images are obtained from a volume of ultrasonographic data (rather than from a slice of data) the application of 3DUS to gynecologic imaging has suggested a role for transvaginal 3DUS in the assessment of uterine anomalies and endometrial lesions. Aim To evaluate the diagnostic accuracy and sensitivity of Hysteroscopy vs TV3D in the evaluation of the uterine abnormalities in infertile women before ICSI. Methodology This is a study including 60 patients were selected from the outpatient gynecological clinic, private center at Sohag government (Ibn Sina Center) in collaboration with (Ain Shams University Hospital in IVF unit) from12/2017 -8/2018. All cases files are computerized and saved in Ibn Sina Center. Results The overall result of accuracy of different modalities was 98.3% for 3D sonography and the accuracy of different modalities in detection of endometrial polyp was 93.3% for 3D sonography and 100% for hysteroscopy. The accuracy of different modalities in detection of septate uterus was 100% for 3D sonography and hysteroscopy. The accuracy of different modalities in detection of intrauterine adhesions was 100% for 100% for 3D and hysteroscopy. Conclusion Hysteroscopy is the gold standard diagnostic & therapeutic tool for uterine anomalies (bicornuate, septate, arcuate, polyp), However 3D ultrasonography is diagnostic tool only but superior to hysteroscopy in certain lesions e.g. (subserous and intramural fibroid). Recommendation we recommend 3D to become soon as the diagnostic procedure of choice in assessment of suspected uterine lesions. Furthermore, we recommend that 3D US, if available, to be performed routinely for all cases of uterine cavity anomalies and prior to corrective uterine surgery.

An experience of elaboration and implementation of systems of slag-forming mixtures mechanized feeding into CCM moulds

2020 ◽  
Vol 76 (10) ◽  
pp. 994-1003
Author(s):  
S. P. Eron’ko ◽  
M. Yu. Tkachev ◽  
E. V. Oshovskaya ◽  
B. I. Starodubtsev ◽  
S. V. Mechik
Keyword(s):  
Economic Effect ◽  
Three Dimensional ◽  
Movable Part ◽  
High Quality ◽  
Working Zone ◽  
Fine Material ◽  
Mixing Chamber ◽  
Field Samples ◽  
Technical Solutions ◽  
Feeding Systems

Effective application of slag-forming mixtures (SFM), being fed into continuous castingg machine (CCM) moulds, depends on their even distribution on the melt surface. Manual feeding of the SFM which is widely usedd does not provide this condition, resulting in the necessity to actualize the work to elaborate systems of SFM mechanized feedingg into moulds of various types CCM. A concept of the designing of a system of SFM feeding into CCM moulds presented with the ratte strictly correspondent to the casting speed and providing formation of an even layer of fine material of given thickness on the whoole surface of liquid steel. The proposed methods of designing of the SFM mechanized feeding systems based on three-dimensional computer simulation with the subsequent verification of the correctness of the adopted technical solutions on field samples. Informattion is presented on the design features of the adjusted facilities intended for continuous supply of finely granulated and powder mixtuures on metal mirror in moulds at the production of high-quality billets, blooms and slabs. Variants of mechanical and pneumo-mechaanical SFM supply elaborated. At the mechanical supply the fine material from the feeding hopper is moved at a adjusted distance bby a rigid horizontally located screw. At the pneumo-mechanical supply the metered doze of the granular mixture is delivered by a sshort vertical screw, the lower part of which is located in the mixing chamber attached from below to the hopper and equipped with ann ejector serving for pneumatic supply of the SFM in a stream of transporting gas. It was proposed to use flexible spiral screws in the ffuture facilities of mechanical SFM feeding. It will enable to eliminate the restrictions stipulated by the lack of free surface for locatiion of the facility in the working zone of the tundish, as well as to decrease significantly the mass of its movable part and to decreaase the necessary power of the carriage moving mechanism driver. The novelty of the proposed technical solutions is protected by thhree patents. The reduction of 10–15% in the consumption of slag-forming mixtures during the transition from manual to mechanizeed feeding confirmed. The resulting economic effect from the implementation of technical development enables to recoup the costs inncurred within 8–10 months.

scholarly journals Three-dimensional ultrasound for knee osteophyte depiction: a comparative study to computed tomography

2021 ◽  
Author(s):  
Valeria Vendries ◽  
Tamas Ungi ◽  
Jordan Harry ◽  
Manuela Kunz ◽  
Jana Podlipská ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Automatic Segmentation ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Surgical Interventions ◽  
Structured Light Scanner ◽  
Joint Surfaces ◽  
Operative Planning ◽  
Rms Error ◽  
Tissue Characteristics

Abstract Purpose Osteophytes are common radiographic markers of osteoarthritis. However, they are not accurately depicted using conventional imaging, thus hampering surgical interventions that rely on pre-operative images. Studies have shown that ultrasound (US) is promising at detecting osteophytes and monitoring the progression of osteoarthritis. Furthermore, three-dimensional (3D) ultrasound reconstructions may offer a means to quantify osteophytes. The purpose of this study was to compare the accuracy of osteophyte depiction in the knee joint between 3D US and conventional computed tomography (CT). Methods Eleven human cadaveric knees were pre-screened for the presence of osteophytes. Three osteoarthritic knees were selected, and then, 3D US and CT images were obtained, segmented, and digitally reconstructed in 3D. After dissection, high-resolution structured light scanner (SLS) images of the joint surfaces were obtained. Surface matching and root mean square (RMS) error analyses of surface distances were performed to assess the accuracy of each modality in capturing osteophytes. The RMS errors were compared between 3D US, CT and SLS models. Results Average RMS error comparisons for 3D US versus SLS and CT versus SLS models were 0.87 mm ± 0.33 mm (average ± standard deviation) and 0.95 mm ± 0.32 mm, respectively. No statistical difference was found between 3D US and CT. Comparative observations of imaging modalities suggested that 3D US better depicted osteophytes with cartilage and fibrocartilage tissue characteristics compared to CT. Conclusion Using 3D US can improve the depiction of osteophytes with a cartilaginous portion compared to CT. It can also provide useful information about the presence and extent of osteophytes. Whilst algorithm improvements for automatic segmentation and registration of US are needed to provide a more robust investigation of osteophyte depiction accuracy, this investigation puts forward the potential application for 3D US in routine diagnostic evaluations and pre-operative planning of osteoarthritis.

Ultrasonographic 3D Evaluation in the Diagnosis of Bladder Endometriosis: A Prospective Comparative Diagnostic Accuracy Study

2021 ◽  
pp. 1-8
Author(s):  
Fabio Barra ◽  
Franco Alessandri ◽  
Carolina Scala ◽  
Simone Ferrero
Keyword(s):  
Diagnostic Accuracy ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Diagnostic Accuracy Study ◽  
Extensive Experience ◽  
Deep Endometriosis ◽  
3D Reconstructions ◽  
Analysis Group ◽  
Bladder Endometriosis ◽  
Accuracy Study

<b><i>Objective:</i></b> The use of three-dimensional (3D) transvaginal ultrasonography (TVS) has been investigated for the diagnosis of deep endometriosis (DE). This study aimed to evaluate if 3D reconstructions improve the performance of TVS) in assessing the presence and characteristics of bladder endometriosis (BE). <b><i>Design:</i></b> This was a single-center comparative diagnostic accuracy study. <b><i>Participants/Materials, Setting, Methods:</i></b> Patients referred to our institution (Piazza della Vittoria 14 Srl, Genova, Italy) with clinical suspicion of DE were included. In case of surgery, women underwent systematic preoperative ultrasonographic imaging; an experienced sonographer performed a conventional TVS; another experienced sonographer, blinded to results of the previous exam, performed TVS, with the addition of 3D modality. The presence and characteristics of BE nodules were described in accord with International DE Analysis group consensus. Ultrasound data were compared with surgical and histological results. <b><i>Results:</i></b> Overall, BE was intraoperatively found in 34 out of 194 women who underwent surgery for DE (17.5%; 95% confidence interval: 12.8–23.5%). TVS without and with 3D reconstructions were able to detect endometriotic BE in 82.2% (<i>n</i> = 28/34) and 85.3% (<i>n</i> = 29/34) of the cases (<i>p</i> = 0.125). Both the exams similarly estimated the largest diameter of BE (<i>p</i> = 0.652) and the distance between the endometriotic nodule and the closest ureteral meatus (<i>p</i> = 0.341). However, TVS with 3D reconstructions was more precise in estimating the volume of BE (<i>p</i> = 0.031). In one case (2.9%), TVS without and with 3D reconstructions detected the infiltration of the intramural ureter, which was confirmed at surgery and required laparoscopic ureterovesical reimplantation. <b><i>Limitations:</i></b> The extensive experience of the gynecologists performing the ultrasonographic scans, the lack of prestudy power analysis, and the population selected, which may have been influenced by the position of the institution as a referral center specialized in the treatment of severe endometriosis, are limitations of the current study. <b><i>Conclusion:</i></b> Our results demonstrated the high accuracy of ultrasound for diagnosing BE. The addition of 3D reconstructions does not improve the performance of TVS in diagnosing the presence and characteristics of BE. However, the volume of BE may be more precisely assessed by 3D ultrasound.

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