Publications by authors named "Zhitong Ge"
This study evaluates the performance of subharmonic-aided pressure estimation (SHAPE) with ultrasound contrast agents using data obtained from calibration procedures. A commercial scanner of ultrasonography (GE Healthcare Logiq E20, Wuxi, China) was used to perform SHAPE on a flowing contrast agent (Sonazoid) in a phantom setup under controlled microbubble stability and flow velocity conditions. Subharmonic time-intensity curves were collected during the SHAPE calibration procedure for analysis.
View Article and Find Full Text PDFBackground: Superb microvascular imaging (SMI) is an advanced form of Doppler flow imaging which has advantages in tiny vessels and low-speed flow. This study aimed to evaluate the diagnostic performance of combining greyscale ultrasound (US) with SMI in differentiating between benign and malignant thyroid nodules.
Methods: A search was conducted in PubMed, Embase, Cochrane Library, Scopus, and Web of Science for relevant studies published till 25 October 2023 that investigated the combined use of greyscale US and SMI to differentiate between benign and malignant thyroid nodules.
A floating mass in the heart: a rare case of renal carcinoma with intracardiac extension.
Eur Heart J Cardiovasc Imaging
October 2024
Objective: This study aimed to investigate the impact of microbubble degradation and flow velocity on Sub-Harmonic Aided Pressure Estimation (SHAPE), and to explore the correlation between subharmonic amplitude and pressure as a single factor.
Methods: We develop an open-loop vascular phantom platform system and utilize a commercial ultrasound machine and microbubbles for subharmonic imaging. Subharmonic amplitude was measured continuously at constant pressure and flow velocity to assess the impact of microbubble degradation.
Background: Intravenous leiomyomatosis (IVL) is a rare endocrine-associated tumor with unique characteristics of intravascular invasion. This study aimed to identify reliable biomarkers to supervise the development or recurrence of IVL in the context of predictive, preventive, and personalized medicine (PPPM/3PM).
Methods: A total of 60 cases were recruited to detect differentially expressed proteins (DEPs) in serum samples from IVL patients.
Background: This study intends to analyze the hemodynamic parameters of the renal artery in patients with Takayasu's arteritis (TAK) to explore the diagnostic efficacy of duplex ultrasonography in assessing the involved renal artery in TAK patients.
Methods: One hundred fifteen TAK patients with 314 renal arteries were retrospectively analyzed, who were admitted to Peking Union Medical College Hospital between 2017 and 2022. These patients underwent both renal artery ultrasonography and angiography within a 4-week period.
Article Synopsis
- Intravenous leiomyomatosis (IVL) is an uncommon tumor that can invade the inferior vena cava and is often misdiagnosed, prompting a study to better understand its ultrasound features for more accurate diagnosis.
- The research involved analyzing ultrasound data from 284 patients with IVC-occupying lesions, identifying IVL in 67 cases, and comparing its ultrasound signs to other lesion types.
- Key features like "sieve hole" and "multi-track" signs were found in IVL lesions but absent in non-IVL cases, highlighting their potential use as diagnostic indicators, although no significant differences were seen in different ultrasound modalities.
Objectives: To evaluate the efficacy of ultrasound and contrast-enhanced ultrasound (CEUS) in disease activity assessment of Takayasu arteritis (TA) with carotid involvement.
Methods: This is a cohort study of 115 patients of TA with carotid involvement. We investigated correlations between clinical data, sonographic features, and CEUS enhancement at the site most prominent lesion of each patient.
Objective: Intravenous leiomyomatosis (IVL) is a rare disease, and few studies have focused on the diagnostic value of contrast-enhanced ultrasound (CEUS) in this condition. This study aimed to investigate the diagnostic value of CEUS in IVL and summarize the specific CEUS characteristics of IVL.
Materials And Method: From December 2016 to March 2021, 93 patients admitted to our hospital with inferior vena cava (IVC) occupying lesions were prospectively enrolled and underwent detailed ultrasound multi-modality examinations, including conventional and contrast-enhanced ultrasound scans.
Background Evidence of the association between serum lipid profiles and intraplaque neovascularization (IPN) is still limited. We aimed to study the value of a novel Doppler method, superb microvascular imaging, in correlating serum lipid profiles and evidence of IPN in a population with a high risk of stroke. Methods and Results A community-based cross-sectional study was conducted in Beijing, China.
View Article and Find Full Text PDFBackground: Intravenous leiomyomatosis (IVL) is a rare estrogen-dependent neoplasm. However, identifiable and reliable biomarkers are still not available for clinical application, especially for the diagnosis and prognosis of the disease.
Methods: In the present study, 30 patients with IVL and 30 healthy controls were recruited.
Previous studies demonstrated that could repress various cancers on proliferation, angiogenesis, and metastasis. However, little attention has been paid to its role in ovarian cancer as a novel biomarker or intervention target, especially its clinical significance and underlying regulatory network. A meta-analysis of six microarrays was adopted here to determine the expression trend of , and was further validated by gene expression profile data and cellular experiments.
View Article and Find Full Text PDFPurpose: To investigate the impact of different breath-holding conditions on the results of renal artery Doppler ultrasonography (RADS).
Methods: In 45 healthy volunteers, we performed RADS examination during breath-holding while breathing naturally and after a deep inspiration. We measured and compared peak systolic flow velocity (PSV), end diastolic velocity (EDV), and resistance index (RI) of the right (RRA) and left (LRA) renal artery, and PSV, EDV, RI, acceleration time and acceleration index (AI) of the right and left interlobar arteries.
Improved stroke risk stratification may improve stroke prevention. We aimed to study the value of a novel Doppler method, superb microvascular imaging (SMI), in correlating plaque thickness and evidence of intra-plaque neovascularization with a history stroke and TIA involving any cerebrovascular territory among community residents considered at high stroke risk. We selected residents aged at least 40 years from the Donghuashi community in China who had at least three stroke risk factors (including a history of stroke or TIA) and carotid plaque thickness of at least 1.
View Article and Find Full Text PDFUltrasound appearance of intravenous leiomyomatosis: A case report.
Medicine (Baltimore)
August 2019
Rationale: Intravenous leiomyomatosis (IVL) is a rare benign smooth muscle tumor that can develop from the pelvic or uterine veins and spread into the central veins and heart. Here, we report a case of recurrent IVL in a 48-year-old woman. To the best of our knowledge, this is the first case report of IVL that describes the characteristic ultrasound features of the tumor, including the rainbow sign.
View Article and Find Full Text PDFIntroduction: Contrast-enhanced ultrasound (CEUS) was recently used to evaluate vascularization within the carotid artery wall, and this process of vascularization was correlated with arteritis activity. We aimed to use CEUS to evaluate disease activity in Takayasu arteritis (TAK) patients.
Method: We used CEUS to analyze 28 consecutive TAK patients.