Incidence of malignancy in adrenal nodules detected on staging CTs of patients with potentially resectable colorectal cancer
ConclusionAdrenal nodules detected in staging CTs in patients with otherwise resectable colorectal cancers are rarely malignant.Key Points•Among 6474 patients who underwent staging CT and had potentially resectable colorectal cancer, 363 had adrenal nodules ( ≥ 10 mm) detected in retrospective CT image review.• Three out of the 363 patients with adrenal nodules detected on staging CT had malignant adrenal nodules, one of whom had metastasis from colorectal cancer. (Source: European Radiology)
Source: European Radiology - June 3, 2022 Category: Radiology Source Type: research

Transient severe motion artifacts on gadoxetic acid –enhanced MRI: risk factor analysis in 2230 patients
ConclusionKnowing risk factors for transient severe motion artifact on gadoxetic acid –enhanced MRI can be clinically useful for providing diagnostic strategies more tailored to individual patients.Key Points•Old age, high body mass index, chronic obstructive pulmonary disease, and moderate to severe pleural effusion were independent risk factors for transient severe motion artifact on gadoxetic acid –enhanced MRI.•Patients with hepatitis B or previous experience of gadoxetic acid –enhanced MRI were less likely to show transient severe motion artifact.•As the number of risk factors for transient severe motion a...
Source: European Radiology - June 3, 2022 Category: Radiology Source Type: research

Value of 3-T MR imaging in intraductal papillary mucinous neoplasm with a concomitant invasive carcinoma
ConclusionsThese observations suggest that the PDFF of the pancreas is associated with the presence of IPMN-IC.Key Points• The cause and risk factors of IPMN with a concomitant invasive carcinoma have not yet been clarified.• The PDFF of the pancreas was significantly higher in the IPMN-IC group than in the normal pancreas group or the IPMN group.• Pancreatic PDFF may be a potential biomarker for the development of IPMN with a concomitant invasive carcinoma. (Source: European Radiology)
Source: European Radiology - June 3, 2022 Category: Radiology Source Type: research

Prognostic value of post-treatment fluid-attenuated inversion recovery vascular hyperintensity in ischemic stroke after endovascular thrombectomy
ConclusionsPost-treatment FVH may be an effective prognostic marker associated with clinical outcome in patients with AIS after EVT.Key Points• Post-treatment FVH correlates with incomplete recanalization and higher infarct volume.• Post-treatment FVH is independently associated with an unfavorable outcome.• Post-treatment FVH may provide prognostic information in patients with AIS after EVT. (Source: European Radiology)
Source: European Radiology - June 3, 2022 Category: Radiology Source Type: research

Virtual conferences: results of an international survey on radiologist preferences and perspectives
ConclusionsRespondents appreciated the opportunity to attend the main radiological congresses online and found it a good opportunity to stay updated without having to travel. However, in general, they would prefer these conferences to be structured differently. The lack of networking opportunities was the main reason for preferring an in-person meeting.Key Points• Respondents appreciated the opportunity to attend the main radiological meetings online, considering it a good opportunity to stay updated without having to travel.• In the future, it is likely for congresses to offer attendance options both in person and onl...
Source: European Radiology - June 2, 2022 Category: Radiology Source Type: research

Initial comparative analysis of pulmonary involvement on HRCT between vaccinated and non-vaccinated subjects of COVID-19
ConclusionsCT severity scores in individuals receiving both doses of SARS-CoV-2 vaccination were less severe in comparison to those receiving a single dose of vaccine or no vaccine at all.Key Points• Patients who received complete two doses of vaccination had significantly low mean CT scores compared to the partially vaccinated patients and non-vaccinated patients.• The mean CT scores were significantly lower in completely vaccinated patients of lower ages (<  60  years) while patients >  60  years did not show significantly different CT scores between the vaccinated and non-vaccinated groups.• Consolid...
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Prediction of pathologic complete response on MRI in patients with breast cancer receiving neoadjuvant chemotherapy according to molecular subtypes
ConclusionsThe diagnostic accuracy of MRI for predicting pCR differed by molecular subtypes. When the residual enhancement on MRI after NAC is subtle and seen only in the delayed phase, overinterpretation of residual tumors should be performed with caution.Key Points•In patients with breast cancer after completion of neoadjuvant chemotherapy, the diagnostic accuracy of MRI for predicting pathologic complete response (pCR) differed according to molecular subtype.•When residual enhancement on MRI is subtle and seen only in the delayed phase, this finding could be associated with false-negative pCR results. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Radiographers ’ actions and challenges when confronted with inappropriate radiology referrals
ConclusionRadiographers consult colleagues about suspected unjustified referrals. Effective communication pathways, training and time allocation to improve radiographers ’ skills to assess referrals may enhance appropriate imaging and delivery of quality patient care.Key Points• Radiographers’ actions of supplementing missing information in radiology referrals facilitate provision of high-quality health services.• Radiographers’ strategy when confronted with inappropriate referrals is to consult radiologists and referring clinicians.• Better inter-professional communication and organisation of tasks can facilit...
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Mean apparent propagator-MRI in evaluation of glioma grade, cellular proliferation, and IDH-1 gene mutation status
ConclusionsMAP-MRI is a potent approach in evaluating the microstructural changes in gliomas with different grades, cellular proliferation, and IDH-1 mutation statuses.Key Points• MAP-MRI, a newly developed diffusion technique, accurately reveals microstructure-related features in the complex white matter by recovering important microstructural tissue parameters.• MAP-MRI is a potent approach in evaluating the glioma grade, IDH-1 mutation status, and Ki-67 expression.• Compared with DTI, MAP-MRI seems to demonstrate higher diagnostic performance. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Influence of diabetes mellitus on the diagnostic performance of machine learning –based coronary CT angiography–derived fractional flow reserve: a multicenter study
ConclusionsDM has no negative impact on the diagnostic accuracy of machine learning –based FFRCT.Key Points• ML-based FFRCThas a high discriminative accuracy of hemodynamic ischemia, which is not affected by DM.• FFRCTwas superior to the CCTA alone for the detection of ischemia relevance of coronary artery stenosis in both DM and non-DM patients.• Coronary calcification had no significant effect on the diagnostic accuracy of FFRCTto detect ischemia in DM patients. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

MRI-derived radiomics analysis improves the noninvasive pretreatment identification of multimodality therapy candidates with early-stage cervical cancer
ConclusionsThe clinical-radiomics model and nomogram can potentially identify multimodality therapy candidates inpatients with early-stage cervical cancer.Key Points• Pretreatment identification of multimodality therapy candidates among patients with early-stage cervical cancer helped to select the optimal primary treatment and reduce severe complication risk and costs.• The clinical-radiomics model achieved a better prediction performance compared with the clinical model and the clinical-conventional radiological model.• An easy-to-use nomogram exhibited good performance for individual preoperative prediction. (Sour...
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

A systematic review of cost-effectiveness analyses on endovascular thrombectomy in ischemic stroke patients
ConclusionsOur study reveals significant heterogeneity in previously published thrombectomy CEAs, highlighting need for better standardization in future CEAs.Key Points• All included studies concluded thrombectomy to be cost-effective, from both long- and short-term perspectives.• Only 5 out of 22 studies undertook a societal perspective, and only 1 accounted for indirect costs.• The range of value for mRS 0–2 was 0.71–0.85 quality-adjusted life year (QALY) and 0.21–0.40 QALY for mRS 3–5. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

A radiomics approach for lung nodule detection in thoracic CT images based on the dynamic patterns of morphological variation
ConclusionThe morphological dynamics radiomic features might serve as an effective set of radiomic features for lung nodule detection.Key Points• Texture features varied with such CT system settings as reconstruction kernels of CT images, CT scanner models, and parameter settings, and so on.• Shape and first-order statistics were shown to be the most robust features against variation in CT imaging parameters.• The morphological dynamics radiomic features, which mainly characterized the dynamic patterns of morphological variation, were shown to be effective for lung nodule detection. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Low-dose coronary calcium scoring CT using a dedicated reconstruction filter for kV-independent calcium measurements
AbstractIn this prospective, pilot study, we tested a kV-independent coronary artery calcium scoring CT protocol, using a novel reconstruction kernel (Sa36f). From December 2018 to November 2019, we performed an additional research scan in 61 patients undergoing clinical calcium scanning. For the standard protocol (120 kVp), images were reconstructed with a standard, medium-sharp kernel (Qr36d). For the research protocol (automated kVp selection), images were reconstructed with a novel kernel (Sa36f). Research scans were sequentially performed using a higher (cohort A,n = 31) and a lower (cohort B,n = 30) dose opti...
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Evaluation of intracranial artery stenosis using time-of-flight magnetic resonance angiography: new wine in an old bottle
Key Points•TOF MRA is very important in the evaluation of cerebrovascular stenosis, and a novel evaluation system can further enhance its strengths.•This evaluation system is more accurate based on the fact that cerebral vascular stenosis alters hemodynamics and leads to different imaging presentations. (Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research