Li-Jie Sun

Cluster Decay of the High-lying excited states in

A cluster-transfer experiment of 9Be(9Be,14C → α+10Be)α at an incident energy of 45 MeV was carried out in order to investigate the molecular structure in high-lying resonant states in 14C. This reaction is of extremely large Q-value, making it an excellent case to select the reaction mechanism and the final states in outgoing nuclei. The high-lying resonances in 14C are reconstructed for three sets of well discriminated final states in 10Be. The results confirm the previous decay measurements with clearly improved decay-channel selections and also show a new state at 23.5(1) MeV. The resonant states at 22.4(3) and 24.0(3) MeV decay primarily into the typical molecular states at about 6 MeV in 10Be, indicating a well developed cluster structure in these high-lying states in 14C. Further measurements of more states of this kind are suggested.

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Objectives: To investigate the characteristics and clinical value of transvaginal colour Doppler ultrasound in Caesarean scar pregnancy. It provides an objective basis for early clinical diagnosis and individualised treatment. Methods: A retrospective analysis from January 2010 to December 2017 in our hospital Caesarean scar pregnancy in 919 cases, including 283 cases of patients from May 2015 -2017 year in June, and analyse the clinical data and pathological results of patients, summarise the ultrasonographic features and the treatment and prognosis. Results: The age of CSP patients (88.7%) was between 26 and 40 years old. Among 283 cases of Caesarean scar pregnancy after Caesarean section From May 2015 to June 2017, 263 cases were diagnosed by ultrasound, and the diagnostic coincidence rate was 92.9%. 20 cases were misdiagnosed and the misdiagnosis rate was 7.1%. According to the imaging feature of CSP is divided into: Type I, gestational sac located at the edge of the incision (103 cases, 36.4%), Type II, gestational sac incision (112 cases, 39.6%), Type III, gestational sac protruding toward the direction of bladder (10 cases, 3.5%), Type IV pregnancy (58 cases, a mixed echo 20.5%). This study included 141 cases with high-risk ultrasound-guided curettage after drug treatment; 115 cases with(or not) uterine artery embolisation underwent ultrasound monitoring curettage; 12 cases with simple drug treatment; 4 cases with uterine artery embolisation in MTX after chemotherapy; 4 cases with simple uterine balloon compression hemostasis; 5 cases not treatment; to continue the pregnancy to term Caesarean section in 2 cases of placenta previa with placenta implantation in 1 cases; placenta previa with adhesion in 1 cases of postpartum hemorrhage, 700ml. Conclusions: It is beneficial to improve the accuracy of early diagnosis and reduce the rate of misdiagnosis. Transvaginal colour Doppler ultrasonography is a simple, accurate, quick and effective diagnostic method for Caesarean scar pregnancy. It provides an important objective basis for early diagnosis and individualised treatment.

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ablation for TRAP sequence, fetal cord blood sampling, fetal blood transfusion, fetal ascites aspiration, thoraco-centesis for severe fetal pleural effusion, amnioinfusion and fetal intramuscular injection for anesthesia. We descriptively analysed the feasibility and efficacy of real-time two-dimensional B-mode bi-plane image using eM6C probe. Results: In all cases, we found the safety because of the real-time two-dimensional images would provide other organ positions such as liver, lung, and heart that we could not see in using 1 dimensional image. In centesis into small cavity such as umbilical cord or thoracic cavity, 3D information supported us the successful centesis by leading tip position. The technical limit is that the well-trained assistant must chase the needle tip by tracking ball just online the guided needle after operator. We needed ‘‘momentary stop ’’ just before final insertion from the edge of the organ surface. Conclusions: A biplane mode of real-time 4D imaging may be a promising tool for applying fetal interventions.

EP17.07: Diagnosis and prognosis analysis of Caesarean scar pregnancy: Electronic Poster Abstracts

Objectives: Some pregnant women with congenital heart disease have cardiac insufficiency and pulmonary artery hypertension. The complication during perinatal period is higher than normal people. The newborns often occur premature birth, low birth weight, asphyxia and so on. In this study, we sought to analyse the condition of pregnant women with congenital heart disease during perinatal period and newborns. Methods: A total of 456 pregnant women with congenital heart disease at Beijing An Zhen Hospital/Beijing Heart and Lung Institute from 2006 to 2016 were retrospectively reviewed. The clinical and echocardiographic data were analysed. The echocardiographic findings were compared with pregnancy outcome. Results: The most common congenital heart disease of the 456 patients is atrial septal defect (n=258, 56.6%), ventricular septal defect (n=63, 13.8%) and patent ductus arteriosus (n=42, 9.2%). The numbers of patients with NYHA I, II, III, and IV were 69, 285, 102 and 12, respectively. The numbers of patients with low birth weight infant is higher in type III/IV than type I/II (p<0.001). The numbers of patients with various degree of pulmonary hypertension, i.e. severe, moderate and mild were 57, 27 and 120, respectively. The numbers of low birth weight infant is higher in severe/moderate than mild pulmonary hypertension. 3 women were died after labour (0.65%). The numbers of natural labour, Caesarean section and pregnancy termination were 1(3.1%), 372(81.6%)and 24(5.2%), respectively. The weight of newborn is 2953±529g. Apgar score were 10 (n=390, 86.1%), 9 (n=27, 5.9%), 8 (n=6, 1.3%), 7 (n=6, 1.3%) and 4 (n=3, 0.6%). Conclusions: Echocardiography can be used to assess the heart structure and function for pregnant women with congenital heart disease and to evaluate NYHA classification, ejection fraction, and pulmonary hypertension in this group of patients.

P16.01: The value of prenatal chromosomal microarray analysis in fetuses with structural ultrasound abnormalities and a normal karyotype in China

The fusion dynamic mechanism of heavy-ions at energies near the Coulomb barrier is complicated and still not very clear up to now. Accordingly, a self-consistent method based on the CCFULL calculations has been developed and applied for an ingoing study of the effect of the positive Q-value neutron transfer (PQNT) channels in this work. The typical experimental fusion data of Ca + Ca and Ni + Ni is analyzed within the unified calculation scheme. The PQNT effect in near-barrier fusion is further confirmed based on the self-consistent analysis and extracted quantitatively.

EP17.01: Perinatal management and pregnancy outcome in pregnant women with congenital heart disease

The breakup reactions of weakly-bound nuclei at energies around the Coulomb barrier and the corresponding coupling effect on the other reaction channels are hot topics nowadays. To overcome the difficulty in identifying both heavier and lighter fragments simultaneously, a new kind of ionization-chamber based detector telescope has been designed and manufactured. It consists of a PCB ionization chamber and three different thickness silicon detectors installed inside the chamber, which form a multilayer ΔE-E R telescope. The working conditions were surveyed by using an α source. An in-beam test experiment shows that the detector has good particle identification for heavy particles like 17F and 16O as well as light particles like protons and alpha particles. The measured quasi-elastic scattering angular distribution and the related discussions for 17F+208Pb are presented.