Abstract:
AIM:To investigate the possible clinical application value of second harmonic imaging under low acoustic pressure. METHODS:Six New Zealand rabbits, averaging 2.7+/-0.4 kg, were selected and operated upon to construct hepatic VX2 tumor carrier model. Hepatic VX2 tumors were imaged with B mode Ultrasonography (US), and second harmonic imaging (SHI) under high mechanic index (1.6) and low mechanic index (0.1). Echo agent was intravenously injected through ear vein at a dose of 0.01 mL/kg under B mode US and high MI SHI, and 0.05 mL/kg under low MI SHI, and then the venous channel was cleaned with sterilized saline. All the images were recorded by magnetic optics (MO), and they were analyzed further by at least two independent experienced sonographers. RESULTS:Totally 6 hypoechoic and 3 hyperechoic lesions were found in the six carrier rabbits with a mean size about 2.1+/-0.4 under B mode ultrasound, they were oval or round in shape with a clear outline or a hypoechoic halo at the margin of the lesions. Contrast agent could not change the echogenicity of the lesions under B mode US and SHI under high acoustic pressure. However, it could greatly increase the real time visualization sensitivity of the lesions with SHI under low acoustic pressure. CONCLUSION:Our results suggest that contrast enhanced SHI with low MI and a bubble non-destructive method would be much more helpful than conventional SHI in our future clinical applications.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Du WH,Yang WX,Wang X,Xiong XQ,Zhou Y,Li Tdoi
10.3748/wjg.v9.i8.1679keywords:
subject
Has Abstractpub_date
2003-08-01 00:00:00pages
1679-82issue
8eissn
1007-9327issn
2219-2840journal_volume
9pub_type
杂志文章abstract::Solitary fibrous tumors are predominantly benign and are most commonly found in the thoracic cavity and pleura; while reports exist in the literature of malignant solitary fibrous tumors and those located in extrathoracic organs, these cases are considered extremely rare. Herein, a case is reported of a malignant soli...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i21.3354
更新日期:2013-06-07 00:00:00
abstract:AIM:To validate the Rockall scoring system for predicting outcomes of rebleeding, and the need for a surgical procedure and death. METHODS:We used data extracted from the Registry of Upper Gastrointestinal Bleeding and Endoscopy including information of 1869 patients with non-variceal upper gastrointestinal bleeding t...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i48.7779
更新日期:2006-12-28 00:00:00
abstract::The clinical course of chronic liver diseases is significantly dependent on the progression rate and the extent of fibrosis, i.e. the non-structured replacement of necrotic parenchyma by extracellular matrix. Fibrogenesis, i.e. the development of fibrosis can be regarded as an unlimited wound healing process, which is...
journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.15.2433
更新日期:2009-05-28 00:00:00
abstract:AIM:To evaluate the clinical outcomes and safety of anterior- and conventional-approach hepatectomy for patients with large liver tumors. METHODS:PubMed, EMBASE, Google Scholar and the Cochrane Library databases were searched for randomized controlled trials (RCTs) and controlled clinical trials comparing anterior-app...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.v20.i45.17235
更新日期:2014-12-07 00:00:00
abstract::The annual incidence of adenocarcinoma arising from Barrett's esophagus (BE) is approximately 0.5%. Through a process of gradual transformation from low-grade dysplasia to high-grade dysplasia (HGD), adenocarcinoma can develop in the setting of BE. The clinical importance of appropriate identification and treatment of...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v16.i30.3780
更新日期:2010-08-14 00:00:00
abstract:AIM:To determine short- and long-term outcomes of endoscopic submucosal dissection (ESD) using the stag beetle (SB) knife, a scissor-shaped device. METHODS:Seventy consecutive patients with 96 early esophageal neoplasms, who underwent ESD using a SB knife at Kure Medical Center and Chugoku Cancer Center, Japan, betwee...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v24.i15.1632
更新日期:2018-04-21 00:00:00
abstract::Alcoholism and cirrhosis, which are two of the most serious health problems worldwide, have a broad spectrum of clinical outcomes. Both diseases are influenced by genetic susceptibility and cultural traits that differ globally but are specific for each population. In contrast to other regions around the world, Mexican...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v19.i44.7972
更新日期:2013-11-28 00:00:00
abstract:AIM:To examine the characteristics of colonic polyps, where it is difficult to distinguish adenomatous polyps from hyperplastic polyps, with the aid of acetic acid chromoendoscopy. METHODS:Acetic acid spray was applied to colonic polyps smaller than 10 mm before complete excision. Endoscopic images were taken before a...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.1903
更新日期:2008-03-28 00:00:00
abstract::An inefficient cellular immune response likely leads to chronic hepatitis C virus (HCV) infection. Resolution of chronic HCV infection in the absence of treatment is a rare occurrence. We report the case of a 39-year old white male with a 17-year history of chronic HCV infection, who eradicated HCV following a serious...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i31.4268
更新日期:2007-08-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i10.2542
更新日期:2014-03-14 00:00:00
abstract:BACKGROUND:Pancreatic endocrine insufficiency after acute pancreatitis (AP) has drawn increasing attention in recent years. AIM:To assess the impact of risk factors on the development of pancreatic endocrine insufficiency after AP. METHODS:This retrospective observational long-term follow-up study was conducted in a ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i23.3260
更新日期:2020-06-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i44.16529
更新日期:2014-11-28 00:00:00
abstract::A 65-year-old man with cT1bN0M0 stage I middle thoracic esophageal cancer underwent subtotal esophagectomy and gastric tube reconstruction through the posterior mediastinal route after preoperative carbon-ion radiotherapy and chemotherapy in a clinical trial. Anastomotic leakage occurred, but it spontaneously improved...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i28.5253
更新日期:2017-07-28 00:00:00
abstract:AIM:To examine the effect of Fusobacterium nucleatum (F. nucleatum) on the microenvironment of colonic neoplasms and the expression of inflammatory mediators and microRNAs (miRNAs). METHODS:Levels of F. nucleatum DNA, cytokine gene mRNA (TLR2, TLR4, NFKB1, TNF, IL1B, IL6 and IL8), and potentially interacting miRNAs (m...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v24.i47.5351
更新日期:2018-12-21 00:00:00
abstract:AIM:To study the predictive value of the vegetative-depressive symptoms of the Zung Depression Rating Scale for the occurrence of depression during treatment with peg-interferon alpha-2b of chronic hepatitis C (CHC) patients. METHODS:The predictive value of vegetative-depressive symptoms at 4 wk of treatment for the o...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.3748/wjg.v13.i43.5736
更新日期:2007-11-21 00:00:00
abstract::Colorectal cancer is one of the most common causes of cancer morbidity both in men and in women. However, females over 65 years old show higher mortality and lower 5-year survival rate of colorectal cancer compared to their age-matched male counterparts. The objective of this review is to suggest gender-based innovati...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i17.5167
更新日期:2015-05-07 00:00:00
abstract:AIM:To examine the association between parity and gastric cancer (the cases are almost all premenopausal women) risk in a cohort of young parous women. METHODS:The study cohort consisted of all women with a record of a first and singleton childbirth in the Birth Register between 1978 and 1987. We tracked each woman fr...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v17.i6.784
更新日期:2011-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v17.i35.4013
更新日期:2011-09-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.14.6115
更新日期:2008-10-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v19.i37.6144
更新日期:2013-10-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.14.5385
更新日期:2008-09-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.v13.i40.5376
更新日期:2007-10-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.14.831
更新日期:2008-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i2.265
更新日期:2013-01-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 社论,评审
doi:10.3748/wjg.v12.i35.5599
更新日期:2006-09-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i6.1845
更新日期:2015-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i13.1501
更新日期:2020-04-07 00:00:00
abstract::Hepatitis C virus (HCV) infection disrupts the normal metabolism processes, but is also influenced by several of the host's metabolic factors. An obvious and significantly detrimental pathophysiological feature of HCV infection is insulin resistance in hepatic and peripheral tissues. Substantial research efforts have ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i11.2888
更新日期:2014-03-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.3165
更新日期:2008-05-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 社论,评审
doi:10.3748/wjg.14.3781
更新日期:2008-06-28 00:00:00