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

Do you dare with a health-economy methodology issue? An editorial comment on “A systematic review of cost-effectiveness analyses on endovascular thrombectomy in ischemic stroke patients”
(Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Correction to: Preoperative breast magnetic resonance imaging in patients with ductal carcinoma in situ: a systematic review for the European Commission Initiative on Breast Cancer (ECIBC)
(Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Correction to: Mean apparent propagator-MRI in evaluation of glioma grade, cellular proliferation, and IDH-1 gene mutation status
(Source: European Radiology)
Source: European Radiology - May 20, 2022 Category: Radiology Source Type: research

Contrast-enhanced ultrasound of solid pancreatic head lesions: a prospective study
ConclusionCEUS is a useful tool for the evaluation of SPHL. CEUS can be incorporated into the diagnostic algorithm to differentiate PDAC from non-PDAC lesions.Key Points• Hypoenhancement and incomplete enhancement at CEUS were significantly more common in PDAC than in non-PDAC.• Central vessels at CEUS were significantly associated with PDAC.• There was no difference in TTP and WT between PDAC and non-PDAC lesions. (Source: European Radiology)
Source: European Radiology - May 19, 2022 Category: Radiology Source Type: research

MRI –radiomics–clinical–based nomogram for prenatal prediction of the placenta accreta spectrum disorders
ConclusionsAn MRI –radiomics–clinical nomogram had a robust performance in antenatal predicting the PAS in pregnancies.Key Points•An MRI –radiomics–clinical–based nomogram might serve as an adjunctive approach for the treatment decision-making in pregnancies suspicious of PAS.• The radiomic score provides a mathematical formula that predicts the possibility of PAS by using the MRI data, and pregnant women with PAS had higher radiomic scores than those without PAS. (Source: European Radiology)
Source: European Radiology - May 19, 2022 Category: Radiology Source Type: research