Background/aims: To assess the perfusion parameters and angiogenesis of HCC using dynamic contrast enhanced(DCE) MR and to correlate it with histopathologic findings in an experimental rat model.
Methodology: Twenty rats were continuously infused with diethylnitrosamine (DEN) for tumor induction. After 32 to 36 weeks of DEN treatment, the rats underwent MRI of the liver with a 3-T MR imaging system. Perfusion parametric maps and perfusion parameters such as, time to peak (TTP) and peak enhancement (PE) were obtained by using a commercially available software package. The nodules were correlated precisely to DCE MR images.
Results: A total of 13 nodules were found in 12 rats; 5 dysplastic nodule (DN)s were identified in 5 rats and 8 HCCs (3 Edmonson grade I, 2 Edmonson grade I-II, 3 Edmonson grade II) were found in 7 rats. There were significant differences in mean values of PE and HPH (histogram peak height) of PE between DN and HCC. Mean value and HPH of PE showed statistically significant correlation with tumor grade.
Conclusions: There were significant differences in perfusion parameters between DN and HCC. DCE MR imaging can be used in the differential diagnosis and management of liver disease in hepatocarcinogenesis.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Correlation Between the Inferior Vena Cava/Aorta (Ivc/Ao) Ratio and Serum Lactate Levels in Children With Renal Disorder.
Int J Nephrol Renovasc Dis
January 2025
Department of Pediatric, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia.
Background: Acute kidney injury (AKI) is common in critically ill children in the PICU, with incidence rates from 2.5% to 58%, impacting mortality and hospital duration. Early AKI detection is vital, but conventional hemodynamic monitoring often lacks specificity.
View Article and Find Full Text PDFBackground: Intrabdominal pressure (IAP) is an important parameter. Elevated IAP can reduce visceral perfusion, lead to intraabdominal hypertension, and result in life-threatening abdominal compartment syndrome. While ingestible capsular devices have been used for various abdominal diagnoses, their application in continuous IAP monitoring remains unproven.
View Article and Find Full Text PDFCOMPUTED TOMOGRAPHY CEREBRAL PERFUSION TO PREDICT FUNCTIONAL OUTCOME IN PAEDIATRIC HEAD INJURY: A COMPARITIVE STUDY OF VOXEL BASED AND WHOLE BRAIN PERFUSION.
World Neurosurg
January 2025
Department of Neurosurgery, SMS Medical College and Hospital, Jaipur, Rajasthan, India.
Objective: This study evaluates the extent of perfusion abnormalities in pediatric traumatic head injury patients by using computed tomography perfusion (CTP) and compares the efficacy of voxel based and whole brain perfusion data clinically with functional outcome scales GOSE-P and MRS.
Methodology: In this Prospective study 100 eligible patients of age group 0-15 years were enrolled. Subjects were categorized into mild, moderate and severe traumatic brain injury using GCS.
Diffusion-weighted arterial spin labeling MRI to investigate mannitol-induced blood brain barrier disruption.
Magn Reson Imaging
January 2025
Department of Radiology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA. Electronic address:
Purpose: Diffusion-weighted arterial spin labeling (DW-ASL) MRI has been proposed to determine the rate of water exchange (K) across the blood brain barrier (BBB). This study aims to further evaluate K MRI by comparing it with standard dynamic contrast-enhanced (DCE) MRI and histology in association with mannitol-induced disruption of the BBB.
Methods: DW-ASL was measured using a multiple b-value MRI protocol in normal rats at three post-labeling delays (N = 19), before and after intra-carotid injection of mannitol to disrupt BBB in one hemisphere (N = 13).
Effects of routine postural repositioning on the distribution of lung ventilation and perfusion in mechanically ventilated patients.
Intensive Crit Care Nurs
January 2025
Department of Intensive Care Medicine, Hospital Universitario de La Princesa, Madrid, Spain; Centro de investigación en red CIBERES de enfermedades respiratorias, Instituto de Salud, Carlos III, Madrid, Spain. Electronic address:
Objectives: To analyse the effects on respiratory function, lung volume and the regional distribution of ventilation and perfusion of routine postural repositioning in mechanically ventilated critically ill patients.
Methods: Prospective descriptive physiological study. We evaluated gas-exchange, lung mechanics, and Electrical Impedance Tomography (EIT) determined end-expiratory lung impedance and regional ventilation and perfusion distribution in five body positions: supine-baseline (S1); first lateralisation at 30° (L1); second supine position (S2), second contralateral lateralisation (L2) and third final supine position (S3).
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!