reconstruction

摘要： SEED:An Operational Numerical Tool for Dosimetric Reconstruction in Case of External Radiological Overexposure F.Entine1,2,G.Garnier2,M.Dondey2,Y.Rizzi1,A.Gobert1,C.Bassinet1,S.Papin2,I.Pennacino2,A.Cazoulat2,J.C.Amabile3,C.Huet1(1.Institute for Radiation Protection and Nuclear Safety(IRSN),31 avenue de la Division Leclerc-92260 FONTENAY-AUX-ROSES,France;2.French Defense Radiation Protection Service(SPRA),1 bis rue du lieutenant Raoul Batany-CS500-92141 CLAMART Cedex,France;3.Armed Forces Medical Service Head quarters(DCSSA),60 boulevard du général Martial Valin-CS 21623-75509 PARIS Cedex 15,France).

摘要： Background:Repair of extensive deep wounds in the forelimb remains challenging for surgeons.The objective of this study was to evaluate the surgical technique and clinical significance of multiple-territory paraumbilical perforator(PUP)flaps in patients with massive soft tissue defects in the upper limbs.Methods:Between January 2017 and September 2021,16 patients(6 women and 10 men)aged 24–54 years(average,41.4 years)who were hospitalized at the First Affiliated Hospital of Soochow University and the North District of the Suzhou Municipal Hospital were investigated.Their injuries included damage to the fingers,dorsal skin of the hands,wrist,or forearm.Their tendons or bones were exposed after debridement.In some patients,multiple-territory PUP flaps that encompassed adjacent angiosomes were transplanted to cover the soft tissue defects.Results:All flaps survived and healed well.After a follow-up of 2–54 months,all patients recovered satisfactorily in terms of characteristic and functional review.Conclusions:The application of PUP flaps,especially those encompassing multiple angiosomes(multiple-territory PUP flaps),can be an optimal reconstruction method for repairing massive soft tissue defects in the forelimb.

摘要： Building processing,structure,and property(PSP)relations for computational materials design is at the heart of the Materials Genome Initiative in the era of high-throughput computational materials science.Recent technological advancements in data acquisition and storage,microstructure characterization and reconstruction(MCR),machine learning(ML),materials modeling and simulation,data processing,manufacturing,and experimentation have significantly advanced researchers’abilities in building PSP relations and inverse material design.In this article,we examine these advancements from the perspective of design research.In particular,we introduce a data-centric approach whose fundamental aspects fall into three categories:design representation,design evaluation,and design synthesis.Developments in each of these aspects are guided by and benefit from domain knowledge.Hence,for each aspect,we present a wide range of computational methods whose integration realizes data-centric materials discovery and design.

摘要： BACKGROUND Hepatic artery aneurysm(HAA)is the second most common visceral aneurysm.A significant number of hepatic aneurysms are found accidentally on examination.However,their natural history is characterized by their propensity to rupture,which is very serious and requires urgent treatment.An emergent giant hepatic aneurysm with an abdominal aortic dissection is less commonly reported.CASE SUMMARY We report the complicated case of a giant hepatic aneurysm with an abdominal aortic dissection.A 66-year-old female presented with the complaint of sudden upper abdominal pain accompanied by vomiting.Physical examination showed that her blood pressure was 214/113 mmHg.Her other vital signs were stable.Computed tomography found a giant hepatic proper aneurysm and dissection of the lower segment of the abdominal aorta.Furthermore,angiography showed a HAA with the maximum diameter of approximately 56 mm originating from the proper hepatic artery and located approximately 15 mm from the involved bifurcation of the left and right hepatic arteries with no collateral circulation.Therefore,we decided to use a stent to isolate the abdominal aortic dissection first,and then performed open repair.After the operation,the patient recovered well without complications,and her 3-month follow-up checkup did not reveal any late complications.CONCLUSION Open surgery is a proven method for treating giant hepatic aneurysms.If the patient's condition is complex,staged surgery is an option.

摘要： BACKGROUND Hilar cholangiocarcinoma(HC)is a good adaptation certificate of hepatic arterectomy,and hepatic arterectomy is conductive to the radical resection of cholangiocarcinoma,which simplifies the operation and helps with a combined resection of the peripheral portal tissue.With continuous development of surgical techniques,especially microsurgical technique,vascular invasion is no longer a contraindication to surgery in the past 10 years.However,hepatic artery reconstruction after hepatic arterectomy has been performed to treat liver tumor in many centers with better results,but it is rarely applied in advanced HC.AIM To determine the prognosis of patients with advanced HC after hepatic artery resection and reconstruction.METHODS A total of 98 patients with HC who underwent radical operation in our hospital were selected for this retrospective analysis.According to whether the patients underwent hepatic artery resection and reconstruction or not,they were divided into reconstruction(n=40)and control(n=58)groups.The traumatic indices,surgical resection margin,liver function tests before and after the operation,and surgical complications were compared between the two groups.RESULTS Operation time,blood loss,hospital stay,and gastrointestinal function recovery time were higher in the reconstruction group than in the control group(P0.05),but was higher in the reconstruction group(P0.05).Two-year survival rate(42.50%vs 39.66%)and two-year survival time(22.0 mo vs 23.0 mo)were similar between the groups(P>0.05).CONCLUSION Radical surgery combined with reconstruction after hepatic artery resection improves R0 resection rate and reduces postoperative liver injury in advanced HC.However,the operation is difficult and the effect on survival time is not clear.

摘要： In order to promote the transformation and development of China’s economy and cope with the realistic challenges posed by the global economic recession and slowing domestic economic growth,the Fourth Session of the 12 th National People’s Congress adopted a strategic resolution on developing the "new economy" and fostering new drivers of growth.Chengdu,capital of Sichuan province,is one of the cities in China which firstly begin to carry out the layout of the new economy development.While achieving results,it also faces many troubles due to its insufficient cognition of the connotation,definition,and path of the "new economy." The paper is based on a theoretical study in combination with the new economic development of Chengdu’s five new paths,to analyze the concept and connotation of the "new economy." It also analyzes from the perspective of higher dimensional reconstruction and new strategic path of economic development,in order to add some insights to the theorectical study and to promote better strategic value of the new economy.

摘要： The anterolateral ligament(ALL)is a primary structure of the anterolateral complex of the knee that contributes to internal rotational stability of the joint.Injury of the ALL is commonly associated with rupture of the anterior cruciate ligament.If left untreated,ALL lesions may lead to residual anterolateral rotational instability of the knee after anterior cruciate ligament reconstruction,which is a common cause of anterior cruciate ligament graft failure.The function of the ALL can be restored by lateral extraarticular tenodesis or anterolateral ligament reconstruction(ALLR).In the lateral extraarticular tenodesis procedure,a strip of the iliotibial band is placed in a non-anatomical position to restrain the internal rotation of the tibia,while in ALLR,a free graft is fixed at the insertion points of the native ALL.Gracilis and semitendinosus grafts have mainly been utilized for ALLR,but other autografts have also been suggested.Furthermore,allografts and synthetic grafts have been applied to minimize donor-site morbidity and maximize the size and strength of the graft.Nevertheless,there has been no strong evidence to fully support one method over another thus far.The present review presents a detailed description of the graft choices for ALLR and the current literature available in regard to the effectiveness and outcomes of published surgical techniques.

摘要： BACKGROUNDEwing’s sarcoma is a highly malignant primary bone tumor that commonly affectschildren. For young patients, multidisciplinary treatment and limb salvage arerecommended, and surgical plans considering the growth potential and boneactivity after tumor resection are essential.CASE SUMMARYAn 11-year-old Asian boy had a 1-mo history of a right-sided limping gait.Imaging revealed a proximal tumor with bone destruction and physealinvolvement over the right femoral neck. He was diagnosed with stage IV(T1N0M1aG3) Ewing’s sarcoma with bilateral lung metastases. Neoadjuvantchemotherapy decreased the tumor size and confined it to the metaphysealregion. The patient underwent four stages of surgery: wide tumor excision plusreconstruction with vascular fibular bone graft plus internal fixation;repeat openreduction and internal fixation;femoral lengthening with orthosis after physealmaturity;and orthosis removal and bone elongation (approximately 6 cm).Following surgery, he could walk without discomfort and had almost equal-sizedbilateral femoral heads, indicating physis preservation. The surgery wassuccessful, and normal femoral head growth was achieved after completeremission. The patient was able to resume normal activities with equal length ofthe bilateral lower limbs.CONCLUSIONTumor treatment and reconstruction following resection are important in skeletally immature patients with Ewing’s sarcoma to improve quality of life.

摘要： In this paper,we propose a compressive sampling and reconstruction system based on the shift-invariant space associated with the fractional Gabor transform.With this system,we aim to achieve the subNyquist sampling and accurate reconstruction for chirp-like signals containing time-varying characteristics.Under the proposed scheme,we introduce the fractional Gabor transform to make a stable expansion for signals in the joint time-fractional-frequency domain.Then the compressive sampling and reconstruction system is constructed under the compressive sensing and shift-invariant space theory.We establish the reconstruction model and propose a block multiple response extension of sparse Bayesian learning algorithm to improve the reconstruction effect.The reconstruction error for the proposed system is analyzed.We show that,with considerations of noises and mismatches,the total error is bounded.The effectiveness of the proposed system is verified by numerical experiments.It is shown that our proposed system outperforms the other systems state-of-the-art.

摘要： There is a clear clinical need for efficient physiotherapy and rehabilitation programs during and after bone lengthening and reconstruction for gaining the optimal effect and also prevention or treatment of lengthening side effects.Pin tract infection is the most prevalent side effect during lengthening which could be prevented and treated initially via proper wound care.Muscle contractures are typically a consequence of the generated tension on the distracted muscle.It can be managed by physiotherapy initially and surgically in later severe stages.Furthermore,it is essential to avoid muscle contracture development,which is the demonstration of the imbalanced muscle appeals on the joint to inhibit the following subluxation.The knee is the furthermost affected joint by the aforementioned problem due to the inherent lack of ligamentous and bony stability.Joint stiffness is the other possible unfavorable effect of lengthening.It happens because of extensive muscle contractures or may possibly be attributed to rigidity of the joint following the amplified pressure on the joint surface during the process of lengthening.Physiotherapy and occupational therapy including endurance and strength exercise as well as stretching play an important role during the rehabilitation periods for the prevention and also the treatment of muscle contracture and the following deformity and also joint stiffness.Likewise,the effect of mental and physical rehabilitation programs should not be overlooked.