Publications by authors named "Guo Ruijun"

Article Synopsis
  • The study examined the effectiveness of contrast-enhanced ultrasound (CEUS) and superb microvascular imaging (SMI) in assessing blood vessel growth in carotid artery plaques and predicting outcomes for stroke patients.
  • Sixty-one patients with carotid atherosclerotic plaques were analyzed using conventional ultrasound, CEUS, and SMI, including a mix of patients who had experienced cerebral infarction and those who had not.
  • Results showed that both SMI and CEUS detected higher levels of neovascularization in plaques from patients with cerebral infarction compared to those without, indicating that SMI can effectively indicate neovascularization related to higher stroke risk.
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To determine whether ultrasound (US) features of breast cancer are associated with Breast Imaging and Reporting Data System molecular subtype, histologic grade, and hormone receptor status as well as to assess the predictive value of these features. Retrospective analysis of the medical records of 220 consecutive patients with invasive breast cancer was reviewed according to the -mutated molecular tumor subtype. US findings of all patients were analyzed.

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Background: The aim of this study was to investigate the application value of laparoscopic ultrasound (LU) in retroperitoneal radical nephrectomy for renal cell carcinoma with Type II inferior vena cava tumor thrombectomy (RRN-RCC-TII-IVCTT).

Methods: The clinical data (operative time, length of tumor thrombus, tumor length, intraoperative bleeding, clinical stage, histological type, residual tumor tissue, and postoperative follow-up) of 6 patients who underwent LU-guided RRN-RCC-TII-IVCTT were retrospectively analyzed, and the intraoperative experience of LU was also summarized.

Results: All 6 patients recovered well with liver and kidney functions returning to normal, and no tumor recurrence, metastasis, or vena cava tumor thrombus.

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To evaluate the changes in testicular stiffness and microcirculation caused by spermatic vein ligation in patients with varicocele, we conducted a case-controlled study. A total of 27 grade III left varicocele cases were enrolled. Testicular stiffness and perfusion were evaluated by shear wave elastography and contrast-enhanced ultrasound during subinguinal microscopic varicocelectomy.

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  • A study examined changes in the elasticity of paravertebral fascia and muscles in adolescent idiopathic scoliosis patients post-surgery for Lenke Type 1, 2, or 3 curves.
  • Ten female patients showed significant correction in Cobb angles and trunk length post-operation, with muscle elasticity on the concave side increasing significantly, while deep fascia elasticity remained unchanged.
  • Results indicated that while elasticity asymmetry of deep fascia decreased, the asymmetry of paravertebral muscle increased at the upper curve end, suggesting further research is needed to understand these changes.
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  • This text discusses advancements in creating optically trapped atom arrays with different species, which are useful for various quantum applications.
  • It highlights the successful assembly of a two-dimensional array containing two types of Rubidium atoms, specifically ^{85}Rb and ^{87}Rb, demonstrating a high filling fraction for both species.
  • The assembly process involves a sorting algorithm that allows for specific geometries and species ratios, paving the way for improved quantum logic, simulations, and the formation of single molecule arrays.
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Background: According to published guidelines, gynecologic surgical patients should be stratified into different risk level groups to receive prophylaxis for venous thromboembolism (VTE), but the applicability of available risk assessment models (RAMs) in common gynecologic surgical patients remained to be confirmed. We aimed to validate the use of the Caprini RAM and gynecologic Caprini (G-Caprini) RAM for assessing postoperative VTE risk in gynecologic surgical patients.

Methods: The database of a randomized controlled trial (RCT) was used to select patients who underwent gynecologic surgeries for benignant and malignant diseases in five institutions in China between 2011 and 2018.

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Background: The aim of this study was to evaluate the effect of lung ultrasound on bronchoalveolar lavage in the treatment of mycoplasma pneumonia in children.

Methods: Thirty children with mycoplasma pneumonia who were treated with medication and bronchial lavage were selected. We collected the results of laboratory and imaging examinations after admission, and the changes in lung consolidation area were examined by ultrasound before, immediately upon completion, and at 1, 3, and 7 days after bronchoalveolar lavage.

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Background: The study aimed to quantify the characteristics of trapezius myofascial trigger points (MTrPs) using shear wave elastography (SWE) and contrast-enhanced ultrasound (CEUS) and explore the application value of the new ultrasound techniques in identifying MTrPs.

Methods: Forty patients participated in this study. MTrPs in the trapezius muscle were determined by palpation, and SWE and CEUS were used to quantify the focal and adjacent areas.

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  • The study investigates the effectiveness of using the SMI scoring method alongside the 2017 ACR TI-RADS for distinguishing between benign and malignant thyroid nodules.
  • The nodules were categorized into different score groups based on their characteristics and changes in scores were observed to assess diagnostic accuracy.
  • Results showed improved specificity, positive predictive value, and overall accuracy after the scoring assignment, indicating enhanced diagnostic capability, although negative predictive value decreased slightly.
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Background: There is no standardized system to evaluate pleural effusion size on ultrasound (US). We aimed to explore the role of US in determining the amount of pleural effusion, with an attempt to provide evidence for clinical efficacy evaluation and treatment program selection.

Methods: A total of 98 patients undergoing thoracoscopy at our center were enrolled in this study.

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Lung ultrasound (LUS) is now widely used in the diagnosis and monitor of neonatal lung diseases. Nevertheless, in the published literatures, the LUS images may display a significant variation in technical execution, while scanning parameters may influence diagnostic accuracy. The inter- and intra-observer reliabilities of ultrasound exam have been extensively studied in general and in LUS.

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Aim: Intrathyroidal parathyroid adenoma (IPA) is rare and may easily be mistaken for thyroid nodule in ultrasonography. The aim of this study was to investigate the characteristic features of IPA and explore the value of preoperative and intraoperative ultrasound in the diagnosis and localization of IPA.

Methods: 13 of 216 patients who were found to have intrathyroidal parathyroid lesions underwent parathyroidectomy in our hospital because of PHPT.

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  • Primary hyperparathyroidism (PHPT) is caused by excessive parathyroid hormone from an overactive gland, and this study focused on identifying sonographic features of parathyroid adenomas while evaluating the effectiveness of ultrasound (US) and Tc-99m MIBI SPECT/CT for locating these adenomas prior to surgery.
  • A total of 107 patients with PHPT were studied, with 97 undergoing both US and Tc-99m MIBI SPECT/CT to identify parathyroid nodules; results showed that US had significantly higher sensitivity (93%) and accuracy (88%) compared to Tc-99m MIBI SPECT/CT (63% for both).
  • The findings indicate that while US
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Objective: To evaluate the clinical outcomes of transvaginal ultrasound-guided (US-guided) radiofrequency ablation (RFA) combined with mifepristone for the treatment of large uterine fibroids.

Methods: Between June 2016 and December 2018, a total of 30 patients with symptomatic uterine fibroids (≥5cm) who underwent transvaginal US-guided RFA combined with mifepristone were included in this retrospective study. A matching cohort of 30 patients underwent transvaginal US-guided RFA without mifepristone as controls.

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Objective: To evaluate the clinical outcomes of transvaginal ultrasound-guided radiofrequency ablation (RFA) combined with a levonorgestrel-releasing intrauterine system (LNG-IUS) for the treatment of symptomatic uterine adenomyosis.

Methods: Patients with symptomatic uterine adenomyosis treated with ultrasound-guided RFA in combined with an LNG-IUS from January 2013 to January 2016 and followed up for 3 years after treatment were selected. Assessment endpoints included the uterine volume reduction rate, dysmenorrheal score, symptom severity score and adverse events.

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Ultracold single molecules have wide-ranging potential applications, such as ultracold chemistry, precision measurements, quantum simulation, and quantum computation. However, given the difficulty of achieving full control of a complex atom-molecule system, the coherent formation of single molecules remains a challenge. Here, we report an alternative route to coherently bind two atoms into a weakly bound molecule at megahertz levels by coupling atomic spins to their two-body relative motion in a strongly focused laser with inherent polarization gradients.

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Purpose: Lung ultrasonography (LU) is useful to assess lung lesions and variations at bedside. To investigate the results of LU in severe and critical patients with coronavirus disease 2019 (COVID-19), we performed a single-institution study to evaluate the related lung lesions and variations, and prophylactic strategies, in a large referral and treatment center.

Methods: We included 91 adult patients with severe and critical COVID-19, namely 62 males and 29 females, with an average age of 59 ± 11 years, who underwent LU.

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Purpose: The aim of this study was to evaluate the applicability of bedside ultrasonography for the diagnosis of deep venous thrombosis (DVT) in patients infected with corona virus disease 2019 (COVID-19) with and without treatment with low molecular weight heparin (LMWH).

Methods: We retrospectively analyzed the records of deceased and surviving patients in whom ultrasonography detected or not a DVT, and in whom LMWH was or not prescribed.

Results: The incidence of DVT is higher in the deceased (33/35) than in the surviving (22/46) patients.

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We construct a polarization-mediated magic-intensity (MI) optical dipole trap (ODT) array, in which the detrimental effects of light shifts on the mixed-species qubits are efficiently mitigated so that the coherence times of the mixed-species qubits are both substantially enhanced and balanced for the first time. This mixed-species magic trapping technique relies on the tunability of the coefficient of the third-order cross term and ground state hyperpolarizability, which are inherently dependent on the degree of circular polarization of the trapping laser. Experimentally, polarization of the ODT array for ^{85}Rb qubits is finely adjusted to a definite value so that its working magnetic field required for magic trapping amounts to the one required for magically trapping ^{87}Rb qubits in another ODT array with fully circular polarization.

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Objective: To evaluate application of a computed tomography (CT)-ultrasound fusion imaging technique to unilateral percutaneous vertebroplasty (PVP) for treating patients with osteoporotic thoracolumbar compression fracture.

Methods: Fourteen patients with osteoporotic thoracolumbar compression fractures were included, randomly divided into CT-ultrasound fusion imaging (n = 7) and traditional X-ray fluoroscopy groups (n = 7). Patients in the first group underwent unilateral PVP using real-time CT-ultrasound fusion imaging.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of deep learning in diagnosing nonalcoholic fatty liver disease (NAFLD) by comparing three different image-processing techniques.
  • A total of 240 participants were divided into four groups based on the severity of NAFLD, and imaging data was analyzed using envelope signal, grayscale signal, and a deep-learning index.
  • Results showed that all three methods effectively identified NAFLD, but the deep-learning index demonstrated the highest diagnostic capability for distinguishing moderate and severe cases, indicating its potential as a superior tool in clinical assessments.
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Background: We sought to assess the biomechanical properties of the paravertebral muscles in adolescent idiopathic scoliosis patients with Lenke Type 1, 2, or 3 (Lenke 1-3) curves.

Methods: The MyotonPro® and shear wave elasticity imaging system were used to assess the biomechanical features of the thoracic paravertebral muscles on concave and convex side in adolescent idiopathic scoliosis patients with Lenke 1-3 curves. The Cobb angle of the main curve was measured using the anteroposterior whole spine radiograph in the standing position.

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Article Synopsis
  • The study addresses the limitations of traditional optical dipole trap (ODT) arrays used for assembling neutral-atom qubits in quantum computers, which suffer from significant errors due to scalar differential light shifts (DLS).
  • A new method called magic-intensity optical dipole trap (MI-ODT) is introduced, which compensates for DLS effects and improves the performance of microwave-driven gates.
  • The research shows that the MI-ODT arrays can achieve a much lower average error rate in gate operations, highlighting their potential for creating scalable quantum computing systems with neutral atoms.
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The aim of this study was to explore changes in the common carotid arterial wall elasticity after smoking cessation. Carotid artery ultrasonographic examination was performed in 136 patients, then 1 or 2 years after smoking cessation. We used echo-tracking (ET) to measure stiffness index (β), pressure-strain elasticity modulus (Ep), arterial compliance (AC), augmentation index (AI), and local pulse wave velocity (PWVβ).

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