Abstract:
BACKGROUND:Early diagnosis and accurate staging are important to improve the cure rate and prognosis for pancreatic cancer. This study was performed to develop an automatic and accurate imaging processing technique system, allowing this system to read computed tomography (CT) images correctly and make diagnosis of pancreatic cancer faster. METHODS:The establishment of the artificial intelligence (AI) system for pancreatic cancer diagnosis based on sequential contrast-enhanced CT images were composed of two processes: training and verification. During training process, our study used all 4385 CT images from 238 pancreatic cancer patients in the database as the training data set. Additionally, we used VGG16, which was pre-trained in ImageNet and contained 13 convolutional layers and three fully connected layers, to initialize the feature extraction network. In the verification experiment, we used sequential clinical CT images from 238 pancreatic cancer patients as our experimental data and input these data into the faster region-based convolution network (Faster R-CNN) model that had completed training. Totally, 1699 images from 100 pancreatic cancer patients were included for clinical verification. RESULTS:A total of 338 patients with pancreatic cancer were included in the study. The clinical characteristics (sex, age, tumor location, differentiation grade, and tumor-node-metastasis stage) between the two training and verification groups were insignificant. The mean average precision was 0.7664, indicating a good training effect of the Faster R-CNN. Sequential contrast-enhanced CT images of 100 pancreatic cancer patients were used for clinical verification. The area under the receiver operating characteristic curve calculated according to the trapezoidal rule was 0.9632. It took approximately 0.2 s for the Faster R-CNN AI to automatically process one CT image, which is much faster than the time required for diagnosis by an imaging specialist. CONCLUSIONS:Faster R-CNN AI is an effective and objective method with high accuracy for the diagnosis of pancreatic cancer. TRIAL REGISTRATION:ChiCTR1800017542; http://www.chictr.org.cn.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Liu SL,Li S,Guo YT,Zhou YP,Zhang ZD,Li S,Lu Ydoi
10.1097/CM9.0000000000000544subject
Has Abstractpub_date
2019-12-05 00:00:00pages
2795-2803issue
23eissn
0366-6999issn
2542-5641pii
00029330-201912050-00005journal_volume
132pub_type
杂志文章abstract:OBJECTIVE:Physiologic cardiac pacing is a novel technique which has been largely popularized in recent decades. His bundle pacing (HBP) has been long considered the most physiologic pacing method; however, with the widespread implementation of this method, its disadvantages have become apparent. In this context, left b...
journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:10.1097/CM9.0000000000000038
更新日期:2019-01-20 00:00:00
abstract::In present study, we examined the effects of NG-nitro-L-arginine (LNNA), an inhibitor of nitric oxide synthase (NOS), and/or methylene blue (MB), a blocker of guanylate cyclase on the vasodilator response of isolated rat arteries including aorta and mesenteric artery to calcitonin gene-related peptide (CGRP) by in vit...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1994-10-01 00:00:00
abstract:BACKGROUND:Associations between glutamine (Gln) enriched nutrition support and surgical patients with gastrointestinal (GI) tumor remain controversy. The purpose of this meta-analysis was to assess the effect of Gln enriched nutrition support on surgical patients with GI tumor in term of relevant biochemical indices, i...
journal_title:Chinese medical journal
pub_type: 杂志文章,meta分析
doi:10.4103/0366-6999.149219
更新日期:2015-01-20 00:00:00
abstract:BACKGROUND:With the progress of perinatal medicine and neonatal technology, more and more extremely low birth weight (ELBW) survived all over the world. This study was designed to investigate the short-term outcomes of ELBW infants during their Neonatal Intensive Care Unit (NICU) stay in the mainland of China. METHODS...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:10.4103/0366-6999.167312
更新日期:2015-10-20 00:00:00
abstract:OBJECTIVE:To study the effect of the body proportion and pubertal growth spurt on the stature of children with beta-thalassaemia major. METHODS:The height, sitting height, upper to lower segment (U:L) ratio and pubertal development were determined in 71 Chinese children (38 girls and 33 boys) with beta-thalassaemia. T...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:Menopausal symptoms and sleep difficulty were physiological processes that were affected by genetic and other factors. This study was to investigate the prevalence of menopausal symptoms and sleep quality in menopausal transition (MT) and postmenopause (PM) women in Taiyuan, Shanxi. METHODS:A community-base...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.178961
更新日期:2016-04-05 00:00:00
abstract:BACKGROUND:The biofragmentable anastomosis ring (BAR) is a simple alternative device to create intestinal anastomosis. Our study was designed to evaluate the clinical value of BAR in intestinal anastomosis. METHODS:A total of 167 patients performed intestinal anastomosis from January 2002 to February 2006 were randomi...
journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2009-08-05 00:00:00
abstract:BACKGROUND:Stereotactic radiosurgery is an alternative to resection of intracranial cerebral arteriovenous malformations (AVMs), while it will fail in some cases. This study aimed to evaluate the changes after stereotactic radiosurgery for AVMs. METHODS:Nineteen cases with cerebral AVMs had failure after stereotactic ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-06-20 00:00:00
abstract:BACKGROUND:Preconditioning with repeated electroacupuncture (EA) could mimic ischemic preconditioning to induce cerebral ischemic tolerance in rats. The present study was designed to investigate whether mu (micro)-, delta (delta)- or kappa (kappa)-opioid receptors are involved in the neuroprotection induced by repeated...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-03-05 00:00:00
abstract:BACKGROUND:Serum expression of cytokines may provide information about the clinical outcome of advanced non-small cell lung cancer (NSCLC) patients. This study aimed to investigate the relationship between serum cytokine levels and the clinical outcome of erlotinib treatment in a second or third line setting in patient...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:The duration of viral shedding and the transmission of 2009 H1N1 influenza among individuals, especially among the younger population with mild illness, are not well understood now. The aim of this study was to determine the viral shedding of the young adult patients with mild 2009 H1N1 influenza in China. ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-05-01 00:00:00
abstract::Atriopeptin III (AP III) and its six analogues were synthesized by solid phase method and their diuretic and hypotensive activities were determined. Among these analogues, analogue [D-Ala-5, D-Arg-23] AP III was nearly 10 times as potent as AP III in diuretic activity while its hypotensive activity increased only 50% ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1995-04-01 00:00:00
abstract:BACKGROUND:In patients with chronic total occlusion (CTO) and multivessel coronary artery disease, the comparison of surgical and the percutaneous revascularization strategies has rarely been conducted. The aim of this study was to compare long term clinical outcomes of drug eluting stent (DES) implantation with corona...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Myoglobin is expressed exclusively in striated skeletal muscles and has been implicated in nitric oxide scavenging. Accumulating data suggest a critical role for nitric oxide in both the endogenous and therapeutic angiogenic response to ischemia. A clear role for myoglobin in ischemic skeletal muscle is unce...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-05-05 00:00:00
abstract:BACKGROUND:The anterior cruciate ligament (ACL) is one of the most commonly injured knee ligaments. Even following ACL reconstruction, significant articular cartilage degeneration can be observed and most patients suffer from premature osteoarthritis. Articular cartilage degeneration and osteoarthritis development afte...
journal_title:Chinese medical journal
pub_type: 杂志文章,meta分析
doi:
更新日期:2010-11-01 00:00:00
abstract::The CRIEPI initiated the Radiation Hormesis Research based on the following rationale. If the Luckey's claim was true, our daily activities in the radiation management would be extremely erroneous. If the Luckey's claim was false, the concept publicated would bring us serious disturbance on the radiation management in...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1994-06-01 00:00:00
abstract:OBJECTIVE:To investigate the localization of Ca(2+)-ATPase (Ca(2+) pump) in the cochlear and its change after endolymphatic hydrops, and to study the relationship between compound action potential (CAP) threshold and the Ca(2+)-ATPase activety. METHODS:The left endolymphatic sac was ablated to induce endolymphatic hyd...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:Pancreatic beta-cell apoptosis induced by lipotoxicity, to a large extent, contributes to the progression of type 2 diabetes. To investigate the mechanism of free fatty acid induced apoptosis, we aimed to study the effects of palmitic acid (PA) on the apoptosis and peroxisome proliferator-activated receptor ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-11-01 00:00:00
abstract:BACKGROUND:Whether an addition of OAC to double antiplatelet therapy for patients with an indication of chronic oral anticoagulation undergoing PCI-S may improve clinical outcomes is still debated. This meta-analysis aimed to update and re-compare the benefits and risks of triple antithrombotic therapy (TT) with double...
journal_title:Chinese medical journal
pub_type: 杂志文章,meta分析
doi:
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:It is important to modulate the expression of glucocorticoids receptor (GR) in tress and maintain the immunity homeostasis in sepsis process. Rhubarb have been shown to have potential effects on anti-inflammatory and immune modulation. The present study was designed to investigate the effects of rhubarb on t...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000000201
更新日期:2019-05-20 00:00:00
abstract::[This corrects the article DOI: 10.4103/0366-6999.181956.]. ...
journal_title:Chinese medical journal
pub_type: 杂志文章,已发布勘误
doi:10.4103/0366-6999.185863
更新日期:2016-07-20 00:00:00
abstract:OBJECTIVE:To explore the mechanism of cisplatin resistance and its reversion in human ovarian cancer. MATERIALS AND METHODS:A cisplatin resistant cell subline of SKOV3, SKOV3/cp, was established, and a xenograft mice model of human ovarian cancer was established by microencapsulation technology. Various biochemical ch...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:Laparoscopic Heller cardiomyotomy and Dor fundoplication is the surgical procedure of choice for esophageal achalasia. The aim of this study was to investigate the clinical outcome of laparoscopic Heller-Dor procedure in our initial series of 25 patients with achalasia. METHODS:Between October 2003 and Janu...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2006-03-20 00:00:00
abstract:BACKGROUND:The medial patellofemoral ligament (MPFL) reconstruction is popular in clinical practice for chronic patellar dislocation; however, the combination with vastus medialis advancement is rare. The aim of this study was to evaluate the clinical outcome of the combination of MPFL reconstruction with vastus medial...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-11-01 00:00:00
abstract:BACKGROUND:Esophageal carcinoma is a common kind of malignant tumor and about 90% of which is esophageal squamous cell carcinoma (ESCC), and it has a high incidence in China. In recent years it has been argued that angiogenesis plays a key role in tumor growth and metastasis and it is a complex process influenced by ma...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-05-20 00:00:00
abstract:BACKGROUND:Connective tissue growth factor (CTGF) contributes greatly to renal tubulointerstitial fibrosis, which is the final event leading to end-stage renal failure. This study was designed to investigate the effects of CTGF antisense oligodeoxynucleotides (ODNs) on the expressions of plasminogen activator inhibitor...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:There are few reports of microsurgical treatment of dorsum sellae meningiomas-which, because of location, size, and differences in growth direction, clinical presentations, degree of surgical difficulty, have varied posttreatment sequelae. In pursuit of an optimal microsurgical treatment option for dorsum se...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-08-20 00:00:00
abstract:OBJECTIVE:To study the mechanism of the cellular proteins involved in the process of replication of hepatitis C virus (HCV) negative-strand RNA. METHODS:Ultraviolet (UV) cross-linking was used to identify the cellular proteins that would bind to the 3'-end of HCV negative-strand RNA. Competition experiment was used to...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2003-06-01 00:00:00
abstract:BACKGROUND:An inflammatory response leading to organ dysfunction and failure continues to be a major problem after injury in many clinical conditions such as sepsis, severe burns, and trauma. It is increasingly recognized that atrial natriuretic peptide (ANP) possesses a broad range of biological activities, including ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:Alpha 2A adrenergic receptor (AR) is a subtype of α2 AR belonging to G protein-coupled receptors, and exerts a variety of biological effects. Recent studies have demonstrated that the α2A AR activation was closely related with inflammatory reaction. The present study aimed to investigate the influence of α2A...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-04-01 00:00:00