Publications by authors named "Zhi Hui Dong"
Objectives: To evaluate the performance of diffusion-weighted imaging (DWI) with an optimal b-value and field-of-view in identifying wall inflammation in abdominal aortic aneurysm (AAA) by comparing it to delayed enhancement T1-weighted imaging (DEI).
Methods: Twenty-five males with AAA were prospectively enrolled and underwent fat-suppressed T1-weighted dark-blood imaging (T1WI), full field-of-view (f-FOV) and reduced field-of-view (r-FOV) DWI (b values = 0, 100, 400 and 800 s/mm), and DEI. Corresponding images on f-FOV, r-FOV DWI and DEI at the same level were evaluated qualitatively and quantitatively using the paired t-test and Wilcoxon signed-rank test.
Article Synopsis
- Anaerobic ammonia oxidation (anammox) is a promising technique for biological nitrogen removal in wastewater treatment, but it faces challenges like slow growth rates and environmental sensitivity that impact nitrogen removal effectiveness.
- Researchers are combining various processes to improve the stability and performance of anaerobic ammonia-oxidizing bacteria (AnAOB), while also exploring their ecological and physiological traits.
- The review discusses the unique characteristics of AnAOB, current methods for isolating them, and the ongoing difficulties in fully understanding their nitrogen metabolism and communication due to the absence of pure cultures.
Background: Transjugular intrahepatic portosystemic shunt (TIPS) is a pivotal intervention for managing esophagogastric variceal bleeding in patients with chronic hepatic schistosomiasis.
Aim: To evaluate the efficacy of digital subtraction angiography image overlay technology (DIT) in guiding the TIPS procedure.
Methods: We conducted a retrospective analysis of patients who underwent TIPS at our hospital, comparing outcomes between an ultrasound-guided group and a DIT-guided group.
Article Synopsis
- Excess sodium intake contributes to hypertension through lymphatic dysfunction, with a focus on the role of the adenosine A2A receptor (A2AR) in lymphatic endothelial cells (LECs) during salt-induced hypertension.* -
- Mice with LEC-specific knockout of A2AR showed higher blood pressure and decreased lymphatic density, while A2AR activation using an agonist improved lymphatic density and lowered blood pressure, indicating its importance in regulating lymphatic function.* -
- The findings suggest A2AR-mediated signaling promotes lymphangiogenesis and sodium balance independently of VEGF, pointing to its potential as a therapeutic target for managing salt-sensitive hypertension.*
Background: The advent of molecular targeted agents and immune checkpoint inhibitors has greatly improved the treatment of advanced renal cell carcinoma (RCC), thus significantly improving patient survival. The incidence of rare drug-related adverse events has gained increased attention.
Case Summary: We report a patient with advanced RCC treated with multiple lines of molecular targeted agents and immune checkpoint inhibitors, who developed a pulmonary infection after treatment with everolimus in combination with lenvatinib.
Purpose: Retrograde type A dissection (RTAD) after thoracic endovascular aortic repair (TEVAR) has been a major drawback of endovascular treatment. To our knowledge, no studies have simulated and validated aortic injuries caused by stent grafts (SGs) in animal models. Therefore, the aim of this study was to evaluate and quantify the SG-aorta interaction through computational simulations and to investigate the underlying mechanism through histopathological examinations.
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- Takayasu arteritis (TAK) is a rare vasculitis affecting large blood vessels, and this study aimed to determine its prevalence and incidence in Shanghai, China, due to a lack of local data.* -
- Researchers analyzed data from 22 hospitals and found 102 diagnosed TAK patients, revealing a point prevalence of 7.01 cases per million and a mean annual incidence of 2.33 cases per million, particularly high among those aged 16 to 34.* -
- Global literature indicates that TAK prevalence and incidence are generally higher in Asian countries compared to others, highlighting significant variation in disease burden across different populations.*
Background: Aortic intimal intussusception is well described in the natural progression of type A aortic dissection. Only 3 cases of aortic intimal intussusception were reported to be related to thoracic endovascular aortic repair (TEVAR) for Stanford type B aortic dissection. In our study, we are reporting a rare but potentially fatal complication, the intraoperative stent-graft (SG)-induced aortic intimal intussusception (ISAII); this study reports a series of endovascular repair for ISAII cases.
View Article and Find Full Text PDFBackground: Although endovascular therapy has been widely used for focal aortoiliac occlusive disease (AIOD), its performance for extensive AIOD (EAIOD) is not fully evaluated. We aimed to demonstrate the long-term results of EAIOD treated by endovascular therapy and to identify the potential risk factors for the loss of primary patency.
Methods: Between January 2008 and June 2018, patients with a clinical diagnosis of the 2007 TransAtlantic Inter-Society Consensus II (TASC II) C and D AIOD lesions who underwent endovascular treatment in our institution were enrolled.
To quantify the global and regional left ventricular (LV) myocardial strain in type 2 diabetes mellitus (T2DM) patients using cardiac magnetic resonance (CMR) tissue-tracking techniques and to determine the ability of myocardial strain parameters to assessment the LV deformation. Our study included 98 adult T2DM patients (preserved LV ejection fraction [LVEF], 72; reduced LVEF, 26) and 35 healthy controls. Conventional LV function, volume-time curve parameters and LV remodeling index were measured using CMR.
View Article and Find Full Text PDFBackground: We report a case of giant gastroduodenal trichobezoar, an extremely rare upper gastrointestinal bezoar due to trichotillomania and trichophagia.
Case Summary: The patient was a 10-year-old girl who presented with an abdominal mass that was discovered at palpation and noninvasive imaging examinations. Computed tomography (CT) showed a well-circumscribed heterogeneous mass extending from the stomach into the duodenum.
Objective: Retrograde type A dissection (RTAD) after thoracic endovascular aortic repair (TEVAR) has been a major drawback of endovascular treatment. To our knowledge, no studies have evaluated aortic injuries caused by stent grafts (SGs). Therefore, the aim of this study was to evaluate and to quantify the SG-aorta interaction and to analyze the risk factors for injury through computational simulation.
View Article and Find Full Text PDFObjective: Stent graft (SG)-induced new entry (SINE) and retrograde type A dissection (RTAD) are serious device-related complications occurring after thoracic endovascular aortic repair (TEVAR) for Stanford type B aortic dissection (TBAD) and may lead to endograft-related complications including retrograde dissection and death. The purpose of this study was to investigate the incidence and risk factors for the development of RTAD and SINE after TEVAR for TBAD and to identify the complications associated with this.
Methods: From April 2005 to October 2013, there were 997 patients who underwent TEVAR for TBAD; 852 were followed up (0-6 years; mean, 2.
We report a reoperation case of a ruptured infectious aortic arch pseudoaneurysm, which was stabilized with thoracic endovascular aortic repair and snorkel bypass of the innominate artery (IA) and the left common carotid artery (LCCA). A 57-year-old Chinese woman with multiple comorbidities and previous open repair for Stanford type A aortic dissection 5 years ago presented with a ruptured 10.7 cm × 7.
View Article and Find Full Text PDFObjective: To evaluate the clinical effect of endovenous laser treatment (EVLT) for patients with varicose veins.
Methods: Our series included 117 patients who underwent EVLT combined with high ligation and stripping since the introduction of the technique in our institution. All EVLT procedures were performed with local skin cooling to prevent skin burns, as well as stripping after exsanguinations to prevent thrombotic phlebitis.
Article Synopsis
- * A study compared MPR and conventional methods in positioning the aortic arch for surgery among 82 patients, revealing significant differences in effectiveness regarding spin and tilt angles.
- * Results indicated that MPR provided superior surgical positioning, leading to potentially safer and more effective stent-grafting outcomes compared to conventional methods.
Article Synopsis
- Genetic studies reveal that aortic dissection is influenced by multiple genes, indicating it is a multi-gene disorder.
- Researchers have identified specific genes linked to the development of aortic dissection using microarray screenings and testing for gene mutations.
- The findings suggest that genetic predispositions and changes play a significant role in the pathogenesis and natural history of aortic dissection.
Article Synopsis
- The study aimed to identify distinguishing features of earthquake-related crush extremity fractures compared to non-earthquake-related fractures using digital radiography and CT scans.
- Researchers analyzed data from 623 earthquake victims and 316 non-earthquake-related fracture victims, focusing on the types and locations of fractures.
- The findings revealed that earthquake-related fractures were more likely to involve multiple extremities and bones, particularly in the lower limbs, indicating a need for improved emergency response strategies in earthquake-prone areas.
[Detection of microvasculature in rat hind limb using synchrotron radiation].
Zhonghua Yi Xue Za Zhi
March 2012
Article Synopsis
- The study aimed to use synchrotron radiation and microangiographic techniques to identify deep-level microvascular structures in rat hind limbs.
- It involved innovative imaging methods, including in vivo and ex vivo microangiography, using specific contrast media to visualize blood vessels in high detail.
- The findings revealed that small blood vessels down to 9 µm could be effectively visualized, highlighting the potential of these techniques for analyzing microvasculature and angiogenesis in lower limbs.
Background: This study prospectively compared the accuracy of a sixty-four slice multidetector row CT (64-MDCT) in cardiac magnetic resonance imaging (MRI) for the assessment of right ventricular (RV) dysfunction and dilatation in patients with mitral regurgitation.
Methods: Eighty-four patients underwent ECG-gated 64-MDCT for the assessment of RV dysfunction and dilatation; 54 of these patients had known mitral regurgitation. End-diastolic and end-systolic volumes, stroke volume, and ejection fraction were measured using the 64-MDCT, and these results were retrospectively compared to the results of MRI (reference standard).
[Complications in endovascular repair of abdominal aortic aneurysms: treatment and prevention].
Zhonghua Wai Ke Za Zhi
October 2011
Article Synopsis
- The study reviews prevention and treatment strategies for complications following endovascular repair (EVAR) of abdominal aortic aneurysms, analyzing data from 344 cases over a period from 2003 to 2010.
- Out of the patients, the surgical success rate was extremely high at 99.7%, with low mortality rates during elective (0.30%) and emergency surgeries (10% in emergencies).
- Key complications included endoleak (5.7%) and aneurysm expansion/rupture (5.4%), emphasizing the importance of thorough preoperative assessments and ongoing follow-up for effective long-term outcomes.
Digital radiography of crush thoracic trauma in the Sichuan earthquake.
World J Radiol
November 2011
Aim: To investigate the features of crush thoracic trauma in Sichuan earthquake victims using chest digital radiography (CDR).
Methods: We retrospectively reviewed 772 CDR of 417 females and 355 males who had suffered crush thoracic trauma in the Sichuan earthquake. Patient age ranged from 0.