Publications by authors named "Peidi Zhang"
Objective: The aim of the work described here was to develop and validate a predictive nomogram based on combined image features of gray-scale ultrasonography (US), elastosonography (ES) and contrast-enhanced US (CEUS) to differentiate malignant from benign American College of Radiology Thyroid Imaging, Reporting and Data System (ACR TI-RADS) 3-5 thyroid nodules.
Methods: Among 2767 thyroid nodules scanned by CEUS in Xijing Hospital between April 2014 and November 2018, 669 nodules classified as ACR TI-RADS 3-5 were included, with confirmed diagnosis and ES examination. Four hundred fifty-five nodules were set as a training cohort and 214 as a validation cohort.
The effectiveness of thermal ablation for the treatment of liver tumours is limited by the risk of incomplete ablation, which can result in residual tumours. Herein, an enhancement strategy is proposed based on the controlled release of Ganoderma applanatum polysaccharide (GAP) liposome-microbubble complexes (GLMCs) via ultrasound (US)-targeted microbubble destruction (UTMD) and sublethal hyperthermic (SH) field. GLMCs were prepared by conjugating GAP liposomes onto the surface of microbubbles via biotin-avidin linkage.
View Article and Find Full Text PDFBackground: This study aims to compare the contrast-enhanced ultrasound (CEUS) characteristics of inflammatory thyroid nodules with those of papillary thyroid carcinomas using time-intensity curve (TIC) analysis.
Methods: This was a retrospective cohort study. Among the thyroid nodules in 2161 patients who underwent CEUS from July 2014 to April 2018, 44 nodules in 44 patients ultimately diagnosed as inflammatory nodules and 44 nodules in 44 patients confirmed as papillary carcinomas (enrolled from July 2016 to April 2018) were included after propensity score matching analysis (1:1).
Article Synopsis
- The study aimed to assess the effectiveness of contrast-enhanced ultrasonography (CEUS) in selecting uterine fibroids for MR-guided focused ultrasound (MRgFUS) ablation and evaluating the treatment's outcomes compared to traditional MR imaging.
- Involving 44 fibroids from 38 patients, the research analyzed pre-ablation characteristics using multivariable linear regression to determine their association with non-perfusion volume (NPV) after treatment.
- Results showed CEUS's performance (AUC 0.95) in predicting NPV was superior to MR imaging (AUC 0.86), indicating that CEUS can be a viable alternative for patient assessment and outcome evaluation in fibroid ablation procedures.
The present study aimed to establish a decision tree (DT) model by combining the parameters of conventional gray-scale ultrasonography (US), elastosonography (ES), color Doppler US (CDUS) and contrast-enhanced US (CEUS) for the differential diagnosis of thyroid nodules. A single-center, retrospective study of 321 thyroid nodules was conducted. For 222 nodules, parameters of conventional gray-scale US, CDUS, ES and CEUS were evaluated using univariate logistic regression.
View Article and Find Full Text PDFAim: This study investigated the enhancement patterns observed on contrast-enhanced ultrasound (CEUS) images for differentiating thyroid nodules.
Material And Methods: A retrospective review was conducted of CEUS cine loops of 252 nodules by two independent readers. Seven categories of enhancement patterns were identified: concentric hypoenhancement; heterogeneous hypoenhancement; hypoenhancement with sharp margin; homogeneous hyper/isoenhancement; hyper/isoenhancement with ring-like vascularity; island-like enhancement; and no perfusion.