Publications by authors named "J Lonjon"
Article Synopsis
- - The study aimed to compare how well arterial phase hyperenhancement (APHE) can be detected in small hepatocellular carcinoma (HCC) using single arterial phase versus triple hepatic arterial phase MRI, along with different types of contrast agents.
- - In a sample of 109 cirrhotic patients with 136 HCCs, both single-AP and triple-AP showed similar detection rates for APHE when using extracellular contrast agents (ECA) and hepato-specific agents (HBA), with no significant differences based on patient variables like age or nodule size.
- - The findings recommend utilizing both single- and triple-AP for liver MRI, emphasizing that early and middle phases of triple-AP are the most
Purpose: The purpose of this study was to evaluate the feasibility, safety and efficacy of percutaneous ablation (PA) of obscure hypovascular liver tumors in challenging locations using arterial CT-portography (ACP) guidance.
Materials And Methods: A total of 26 patients with a total of 28 obscure, hypovascular malignant liver tumors were included. There were 18 men and 6 women with a mean age of 58±14 (SD) years (range: 37-75 years).
A proposal for a useful algorithm to diagnose small hepatocellular carcinoma on MRI.
Eur J Gastroenterol Hepatol
January 2020
Objective: To assess MRI features for the diagnosis of small hepatocellular carcinomas (HCCs) and especially for nodules not showing both of the typical hallmarks.
Patients And Methods: Three hundred and sixty-four cirrhotic patients underwent liver MRI for 10-30 mm nodules suggestive of HCC. The diagnostic performances of MRI features [T1, T2; diffusion-weighted (DW) imaging signal, enhancement, capsule, fat content] were tested, both individually and in association with both typical hallmarks and as substitutions for one hallmark.
Aims: To evaluate the diagnostic performance of CT, MRI and CEUS alone and in combination, for the diagnosis of HCC between 10 and 30 mm, in a large population of cirrhotic patients.
Patients And Methods: In a multicentre prospective trial, 442 patients have been enrolled. Within a month, CEUS, CT and MRI were performed for all patients.
We describe the main tools for MR assessment of the response of rectal cancer tumors after chemotherapy, before surgery. In locally advanced cases of rectal and lower rectal cancer, MR is useful in allowing the treatment strategy to be adjusted, enabling conservative surgery to be performed if the patient responds well. The different types of response (fibrous, desmoplastic and colloid), their appearances and difficulties in MR interpretation are described.
View Article and Find Full Text PDF