We have performed a study on 28 patients (20 with valve disease and eight with Eisenmenger syndrome) to evaluate the degree of pulmonary hypertension by means of continuous, pulsed and color Doppler, comparing these results with those obtained at cardiac catheterisation. Invasive systolic pulmonary pressure corresponded excellently with the transtricuspid gradient determined by continuous Doppler (r = 0.97). The study by pulsed Doppler of pulmonary artery flow enabled us to establish a good correlation between total pulmonary resistance with the quotient time to peak flow/ejection time and time to peak flow (r = 0.87 and r = -0.81), and between systolic pulmonary pressure and the time to peak flow (r = -0.80). Color Doppler enabled us to easily establish the presence of tricuspid and pulmonary regurgitation.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Artificial Intelligence in Transcranial Doppler Ultrasonography.
Curr Med Imaging
January 2025
UOC Neurologia e Rete Stroke Metropolitana, Istituto delle Scienze Neurologiche di Bologna, Italy.
Transcranial Doppler is an instrumental ultrasound method capable of providing data on various brain pathologies, in particular, the study of cerebral hemodynamics in stroke, quickly, economically, and with repeatability of the data themselves. However, literature reviews from clinical studies and clinical trials reported that it is an operator-dependent method, and the data can be influenced by external factors, such as noise, which may require greater standardization of the parameters. Artificial intelligence can be utilized on transcranial Doppler to increase the accuracy and precision of the data collected while decreasing operator dependencies.
View Article and Find Full Text PDFDual-modal radiomics ultrasound model to diagnose cervical lymph node metastases of differentiated thyroid carcinoma: a two-center study.
Cancer Imaging
January 2025
Department of Ultrasound, China-Japan Friendship Hospital, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine of Chinese Academy of Medical Sciences, Beijing, China.
Objectives: To establish and validate a dual-modal radiomics nomogram from grayscale ultrasound and color doppler flow imaging (CDFI) of cervical lymph nodes (LNs), aiming to improve the diagnostic accuracy of metastatic LNs in differentiated thyroid carcinoma (DTC).
Methods: DTC patients with suspected cervical LNs in two medical centers were retrospectively enrolled. Pathological results were set as gold standard.
Cesarean Section and Its Impact on Uterine Artery Resistance and the Risk of Pre-eclampsia in Subsequent Pregnancies.
J Reprod Infertil
January 2024
Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran.
Background: The purpose of the current study was to compare the color Doppler findings of uterine arteries and perinatal outcomes in pregnant women with and without previous cesarean section (C/S).
Methods: This cohort study enrolled 308 pregnant women aged 20-35 without underlying diseases, with at least one previous pregnancy and childbirth. The participants were divided into two groups: 154 women without C/S and 154 women with C/S.
Comparative Diagnostic Performance of Color Doppler Flow Imaging, MicroFlow Imaging and Contrast-enhanced Ultrasound in Solid Renal Tumors.
Acad Radiol
January 2025
Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China (C.L., X.W., T.Z., X.W.); National Clinical Research Center for Cancer, Tianjin, China (C.L., L.Q., C.G., H.X., X.W., T.Z., Z.Z., X.W.); Key laboratory of Cancer Prevention and Therapy, Tianjin, China (C.L., L.Q., C.G., H.X., X.W., T.Z., Z.Z., X.W.); Tianjin's Clinical Research Center for Cancer, Tianjin, China (C.L., L.Q., C.G., H.X., X.W., T.Z., Z.Z., X.W.). Electronic address:
Rationale And Objectives: Accurate distinguish malignant from benign renal masses remains a challenge for radiologists. The purpose of this study was to evaluate the value of Color Doppler Flow Imaging (CDFI), MicroFlow Imaging (MFI) and Contrast-enhanced Ultrasound (CEUS) in diagnosing solid renal tumors.
Materials And Methods: A total of 291 patients with 300 solid renal tumors pathologically confirmed were retrospectively analyzed between January 2020 and December 2022.
Systematic Review on definitions of Intestinal Ultrasound Treatment Response and Remission in Inflammatory Bowel Disease.
J Crohns Colitis
January 2025
IRCCS Hospital San Raffaele and University Vita-Salute San Raffaele, Gastroenterology and Endoscopy, Milan, Italy.
Background: Intestinal ultrasound (IUS) is emerging as a valuable tool to assess treatment response in inflammatory bowel disease (IBD) clinical trials. This study details how IUS defines response and remission to evaluate treatment efficacy in IBD patients.
Methods: We conducted a comprehensive search of studies from 1984 to 31 March 2024, focusing on IUS use in assessing treatment efficacy in IBD.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!