Flow chart detailing the recommended US surveillance screening algorithm utilized by LI-RADS US surveillance v2024 core. Positive results refer to observations distinct from background liver greater than 1 cm in size that are not definitely benign, including areas of parenchymal distortion or new throm...
(A) Baseline MR image showing a large colorectal metastasis in the right liver lobe. (B) Signal intensity time course in regions of interest placed over the aorta (upper curve), normal liver parenchyma (middle curve) and tumour tissue (lower curve). (C) Parametric map of Ktrans(ml-1/1000...
Figure 1. A 56-year-old man with two histopathologically proven colorectal liver metastases (CRLM) seen on MRI but invisible on CT. CT images (a and b) do not depict any lesion in the liver. On hepatobiliary phase images of EOB-MRI (c and d) two CRLM are observed, in segment 2 (...
or the appearance of a new lesion. Metabolic responders consisted of CR and PR. Hepatectomy Liver resection was done at a median of 48 days (IQR: 38–55) after the last administration of preoperative chemotherapy in patients with adequate liver function. Indication for surgery was always discusse...
Partial metabolic response (PR) was defined as 425% decrease in SUVmax; progressive disease (PD) was characterised by 425% increase in SUVmax or the appearance of a new lesion. Metabolic responders consisted of CR and PR. Hepatectomy Liver resection was done at a median of 48 days (IQR:...
A study of 32 patients found that both modalities concurred on 77 of 80 primary prostate lesions, with PET/CT missing one prostate lesion and PET/MRI missing one bone and three nodal lesions. Additionally, PET/MRI showed better anatomic localization of active lesions than PET/CT. In another ...
(MRI) were systematically reviewed, and three imaging phenotypes were created based on the lesion distribution pattern. Clinical features and prognoses were compared among the three phenotypes. Liver fibrosis was evaluated visually on T2-weighted imaging (T2WI) and diffusion-weighted imaging (DWI), ...
This threshold was based on the assumption that successful treatment would lead to symptomatic improvement and either complete response (complete lesion resolution) or partial response (≥20% lesion volume reduction). Previous data on MRI-based assessments of EO-treated VMs are limited. Kaji et al....
in SPECT/CT, reducing the need for diagnostic systematic LNE up to 87%. FDG-PET/MRI detected para-aortic LNM in three out of four cases and a liver metastasis. Conclusions: The combination of FDG-PET/MRI and SLNE can reduce the need for diagnostic systematic LNE by up to 87%. PET/MRI...
For instance, in brain MRI—which is a common MRI examination—most studies concentrate on the analysis of lesion, tumor, tissue, whole-brain segmentation, and subcortical structure analysis [3]. In this context, ref. [4] introduced a new framework for segmenting various brain structures, such...