Extraction of cement leakages and malpositioned spindles complicating percutaneous interventions: why, when and how?
ConclusionsSpindle malpositions and soft tissue cement leakages are not uncommon. We described 5 different percutaneous techniques that were safe and effective to extract spindles and paravertebral cement fragments.Key Points•Soft tissue cement leakages or spindle malpositions are a non-rare occurrence during cementoplasty, and may cause technical failure and/or chronic pain.•Most soft tissue cement fragments and malpositioned spindles can easily be extracted using simple percutaneous techniques. (Source: European Radiology)
Source: European Radiology - April 21, 2022 Category: Radiology Source Type: research

Kinematic 4D CT case-control study of wrist in dart throwing motion “in vivo”: comparison with other maneuvers
Conclusion4D CT of the wrist during DT showed a similar performance than RUD and a better performance than CF for the differentiation between patients with and without SLIL tears.Key Points• Four-dimensional computed tomography can dynamically assess scapholunate instability.• The best results for differentiating between patients with and without SLIL tears were obtained with SLG median and maximal values.• The dart throwing and radio-ulnar deviation maneuvers yielded the best results for the dynamic evaluation of scapholunate instability. (Source: European Radiology)
Source: European Radiology - April 21, 2022 Category: Radiology Source Type: research

Using MRI to differentiate upper-lateral intracavitary pregnancy and interstitial pregnancy for the patients with pregnancies in the uterotubal junction during the first trimester
ConclusionsMRI can be used to differentiate the upper-lateral intracavitary pregnancy and interstitial pregnancy during the first trimester.Key Points•We demonstrated MRI diagnostic criteria for the interstitial pregnancy and upper-lateral intracavitary pregnancy.•MRI might be used to identify the complex interstitial pregnancies, those with a gestational sac protruding into the uterine cavity. (Source: European Radiology)
Source: European Radiology - April 20, 2022 Category: Radiology Source Type: research

Image quality comparison of single-energy and dual-energy computed tomography for head and neck patients: a prospective randomized study
ConclusionsDECT weighted average images deliver higher objective and subjective image quality than SECT performed with TVA in head and neck imaging.Key Points• Weighted average images derived from dual-energy CT deliver higher objective and subjective image quality than single-energy CT using automated tube voltage adaptation in head and neck imaging.• If available, dual-energy CT acquisition may be preferred over automated low tube voltage adopted single-energy CT for both malignant and non-malignant conditions. (Source: European Radiology)
Source: European Radiology - April 20, 2022 Category: Radiology Source Type: research

TIPS plus sequential systemic therapy of advanced HCC patients with tumour thrombus-related symptomatic portal hypertension
ConclusionTIPS plus sequential systemic therapy is safe and feasible for treating advanced HCC with tumour thrombus-related SPH.Key Points•Portal vein tumour thrombus (PVTT) is common in advanced hepatocellular carcinoma (HCC) and transforms compensated portal hypertension into symptomatic portal hypertension (SPH).•HCC patients with PVTT-related SPH have a very poor prognosis, and there are no effective treatments recommended by the guidelines.•Therefore, a treatment strategy that utilises a transjugular intrahepatic portosystemic shunt (TIPS) to manage SPH combined with sequential systemic therapy in advanced HCC p...
Source: European Radiology - April 20, 2022 Category: Radiology Source Type: research

3-T MR neurography of lumbo-sacral plexus in hereditary transthyretin-related amyloidosis with polyneuropathy
ConclusionsMRN of the LSP can help differentiate ATTRv-PN patients from AVC. LSP root enlargement and increased intraneural signal are significantly associated with clinical impairment, suggesting potential implications for patient care.Key Points• ATTRv-PN patients showed abnormal LSP changes on MRN.• MRN of the LSP can help to differentiate ATTRv-PN patients from AVC and healthy controls.• LSP root enlargement and increased intraneural signal were significantly associated with clinical impairment in ATTRv-PN patients. (Source: European Radiology)
Source: European Radiology - April 19, 2022 Category: Radiology Source Type: research

Evaluation of neuroradiology emergency MRI interpretations: low discrepancy rates between on-call radiology residents ’ preliminary interpretations and neuroradiologists’ final reports
ConclusionsThe great majority of examinations were correctly interpreted. The rate of major discrepancies in our study was comparable to the data in the literature, and there was no adverse clinical outcome. The level of residency has an effect on the rate of serious errors in residents ’ reports.Key Points• The rate of major discrepancies between preliminary MRI interpretations by on-call radiology residents and final reports by attending neuroradiologists is low, and comparable to discrepancy rates reported for head CT interpretations.• The youngest residents made significantly more serious errors when compared to ...
Source: European Radiology - April 18, 2022 Category: Radiology Source Type: research

Whole-tumour apparent diffusion coefficient (ADC) histogram analysis to identify MYCN-amplification in neuroblastomas: preliminary results
ConclusionsWhole tumour ADC histogram analysis of neuroblastomas can differentiate between tumours with and without MYCN-amplification. These parameters can help identify areas for targeted biopsies or can be used to predict subtypes of these high-risk tumours before biopsy results are available.Key Points• MYCN-amplification significantly affects treatment decisions in neuroblastomas.• MYCN-amplified neuroblastomas had significantly different ADC histogram metrics as compared to tumours without amplification.• ADC histogram metrics can be used to predict MYCN-amplification status based on imaging. (Source: European Radiology)
Source: European Radiology - April 18, 2022 Category: Radiology Source Type: research

Prognostic value of quantitative cervical nodal necrosis burden on MRI in nasopharyngeal carcinoma and its role as a stratification marker for induction chemotherapy
ConclusionsUpgrading patients with multiple CNNs to stage N3 may improve prognostication of the current AJCC staging system. Multiple CNNs might be a potential marker for stratifying patients who would benefit from induction chemotherapy.Key Points•Quantitatively assessed the prognostic value of CNN burden in patients with NPC.•Upgrading patients with multiple CNNs to stage N3 may improve prognostication.•Multiple CNNs may be used as a stratification marker for induction chemotherapy. (Source: European Radiology)
Source: European Radiology - April 18, 2022 Category: Radiology Source Type: research

Deep learning –based fully automated body composition analysis of thigh CT: comparison with DXA measurement
ConclusionsVolumetric CT measurements with DL-based fully automated segmentation are a rapid and more accurate method for measuring thigh tissue composition.Key Points• There was a positive correlation between CT and DXA measurements in both the whole body and thigh.• DXA overestimated thigh lean mass by 10%, lean muscle mass by 47%, but underestimated total fat mass by 20% compared to the CT method.• The equations for predicting CT volume (cm3) were developed using DXA data (g), age, height (cm), and body weight (kg) and good model performance was proven in the validation study. (Source: European Radiology)
Source: European Radiology - April 18, 2022 Category: Radiology Source Type: research

The growth pattern of liver metastases on MRI predicts early recurrence in patients with colorectal cancer: a multicenter study
ConclusionThe FEP- and NC-type liver metastases were associated with early recurrence, which may facilitate the clinical treatment of CRCLM patients.Key Points• In the primary cohort, patients with FEP- and NC-type metastases had shorter disease-free survival (DFS) and a higher intrahepatic recurrence rate than patients without such metastases in the liver.• In the primary cohort, there were no significant differences in DFS or intrahepatic recurrence rate between patients with rough- and smooth-type metastases and those without such metastases in the liver.• High-risk patients had shorter DFS and a higher intrahepat...
Source: European Radiology - April 14, 2022 Category: Radiology Source Type: research

Fractional anisotropy helps to differentiate the optic nerve impairment between neuromyelitis optica spectrum disorders and multiple sclerosis
ConclusionFA could quantify the characteristics of NMOSD – and MS–related optic nerve impairment. DTI was a simple and effective imaging tool to differentiate between the two.Key Points• NMOSD–related optic nerve impairment is extensive, often greater than half of the optic nerve, with the most significant involvement of the posterior segment of the optic nerve.• MS–related optic nerve impairment is more limited than NMOSD, and anterior and middle optic nerve involvement is common.• Optic nerve DTI is a convenient and effective imaging tool that can help characterize NMOSD and MS. (Source: European Radiology)
Source: European Radiology - April 14, 2022 Category: Radiology Source Type: research

A deep learning masked segmentation alternative to manual segmentation in biparametric MRI prostate cancer radiomics
ConclusionsA DLM auto-fixed VOI segmentation can provide a potentially more accurate radiomics diagnosis of CS PCa than expert manual segmentation while also reducing expert time investment by more than 97%.Key Points•Compared to traditional expert-based segmentation, a deep learning mask (DLM) auto-fixed VOI placement is more accurate at detecting CS PCa.•Compared to traditional expert-based segmentation, a DLM auto-fixed VOI placement is faster and can result in a 97% time reduction.•Applying deep learning to an auto-fixed VOI radiomics approach can be valuable. (Source: European Radiology)
Source: European Radiology - April 14, 2022 Category: Radiology Source Type: research

Automated quality assessment of chest radiographs based on deep learning and linear regression cascade algorithms
ConclusionsTen quantitative indices correlated well with the subjective perceptions of radiologists regarding the image layout and position of chest radiographs. The automated system provided high performance in measuring quantitative indices and assessing image quality.Key Points• Objective and reliable assessment for image quality of chest radiographs is important for improving image quality and diagnostic accuracy.• Deep learning can be used for automated measurements of quantitative indices from chest radiographs.• Linear regression can be used for interpretation-based quality assessment of chest radiographs. (So...
Source: European Radiology - April 14, 2022 Category: Radiology Source Type: research

Tumor fibrosis correlates with the survival of patients with pancreatic adenocarcinoma and is predictable using clinicoradiological features
ConclusionsTumor fibrosis was associated with poor OS and DFS in patients with PDAC. The nomogram incorporating clinicoradiological features was useful for preoperatively predicting tumor fibrosis.Key Points•Tumor fibrosis is correlated with poor prognosis in patients with pancreatic adenocarcinoma.•Tumor fibrosis can be categorized according to its association with overall survival and disease-free survival.•A nomogram incorporating carbohydrate antigen 19-9 level, tumor diameter, and peripancreatic tumor infiltration is useful for preoperatively predicting tumor fibrosis. (Source: European Radiology)
Source: European Radiology - April 14, 2022 Category: Radiology Source Type: research