Effects of low-tube voltage coronary CT angiography on plaque and pericoronary fat assessment: intraindividual comparison
ConclusionLow tube voltages, particularly of 70 kV, have a significant effect on coronary plaque and FAI. The effect of low voltage on plaque composition is characterized by a polarization pattern, i.e., a decrease in fibrolipid (medium density) and an increase in necrotic core (low density) and calcification (high density).Clinical relevance statementOur results highlight the comparability and repeatability of plaque and pericoronary fat assessments facilitated by the same or a similar tube voltage. It is necessary to carry out studies on the specificity threshold of low tube voltage at each level.Key Points•Low tube vo...
Source: European Radiology - March 11, 2024 Category: Radiology Source Type: research
Prospective validation of the role of PET/CT in detecting disease after neoadjuvant chemotherapy in advanced ovarian cancer
Conclusion2-[18F]FDG PET/CT had no additional value over ceCT with comparable diagnostic accuracy in detecting disease after NACT in advanced OC.Clinical relevance statement2-[18F]FDG PET/CT is not superior to contrast-enhanced CT in determining disease after neoadjuvant chemotherapy in advanced ovarian cancer; contrast-enhanced CT should be suffice for surgical planning before interval debulking surgery.Key Points•Additional value of 2-[18F]FDG PET/CT over contrast-enhanced CT is undefined in detecting disease after neoadjuvant chemotherapy.•2-[18F]FDG PET/CT has comparable diagnostic accuracy compared to contrast-enh...
Source: European Radiology - March 9, 2024 Category: Radiology Source Type: research
Alveolar membrane and capillary function in COVID-19 convalescents: insights from chest MRI
ConclusionImpaired microvascular pulmonary perfusion and alveolar membrane function persisted 12 weeks after symptom onset and resolved within 38 weeks after COVID-19 symptom onset.Clinical relevance statement129Xe MRI shows improvement of microvascular pulmonary perfusion and alveolar membrane function between 11.5 ± 2.7 weeks and 38.0 ± 5.5 weeks after symptom onset in patients after COVID-19, returning to normal in subjects without significant prior disease.Key Points•The study aims to investigate long-term effects of COVID-19 on lung function, in particular gas uptake efficiency, and on the cardiovasc...
Source: European Radiology - March 9, 2024 Category: Radiology Source Type: research
ESR Essentials: Imaging of sacroiliitis —practice recommendations by ESSR
We present a summary of updated evidence-based practice recommendations for imaging of sacroiliitis. MRI remains the imaging modality of choice for patients with suspected sacroiliitis, using at least four sequences: coronal oblique T1-weighted and fluid-sensitive sequences, a perpendicular axial oblique sequence, and a sequence for optimal evaluation of the bone-cartilage interface. Both active inflammatory and structural lesions should be described in the report, indicating location and extent. Radiography and CT, especially low-dose CT, are reasonable alternatives when MRI is unavailable, as patients are often young. Th...
Source: European Radiology - March 9, 2024 Category: Radiology Source Type: research
Post-mortem skeletal survey (PMSS) versus post-mortem computed tomography (PMCT) for the detection of corner metaphyseal lesions (CML) in children
ConclusionPMSS remains preferable to PMCT for CML evaluation. Any investigation of suspected abuse or unexplained deaths should include radiographs of the limbs to exclude CMLs.Clinical relevance statementIn order to avoid missing evidence that could indicate child abuse as a contributory cause for death in children, radiographs of the limbs should be performed to exclude CMLs, even if a PMCT is being acquired.Key Points•Corner metaphyseal lesions (CMLs) are indicative for abuse, but challenging to detect. Skeletal surveys (i.e. radiographs) are standard practice; however, accuracy of CT is unknown.•Sensitivity for CML...
Source: European Radiology - March 9, 2024 Category: Radiology Source Type: research
Altered probe pressure and body position increase diagnostic accuracy for men and women in detecting hepatic steatosis using quantitative ultrasound
ConclusionUGAP provides excellent diagnostic performance to detect liver fat content in metabolic dysfunction-associated steatotic liver diseases, with good to excellent intra-reproducibility. Regardless of sex, the highest diagnostic accuracy is achieved with increased probe force with men in supine and women in 30 ° left decubitus position, yielding different cut-offs.Clinical relevance statementThe ultrasound method ultrasound-guided attenuation parameter shows excellent diagnostic accuracy and performs with good to excellent reproducibility. There is a possibility to alter body position and increase probe pressure, an...
Source: European Radiology - March 8, 2024 Category: Radiology Source Type: research
Safety of non-ionic contrast media in CT examinations for out-patients: retrospective multicenter analysis of 473,482 patients
ConclusionThe use of NICM for out-patients is in general safe with a low ADR incidence. The type of contrast medium (iopromide) and the seasons (summer and autumn) were associated with a higher risk of acute ADRs. Late ADRs were more often observed with iodixanol.Clinical relevance statementIn comparison to in-patients, out-patients may be exposed to higher risk due to a lack of extensive risk screening, less nursing care, and higher throughput pressure. Safety data about NICM from a large population may complement guidelines and avoid ambiguity.Key Points•The incidence and risk factors for adverse events after using non...
Source: European Radiology - March 8, 2024 Category: Radiology Source Type: research
A novel radiomics nomogram based on T2-sampling perfection with application-optimized contrasts using different flip-angle evolutions (SPACE) images for predicting cochlear and vestibular endolymphatic hydrops in Meniere ’s disease patients
ConclusionThe novel radiomics nomograms based on T2-SPACE images were successfully constructed to predict cochlear and vestibular EH in Meniere ’s disease. The models showed a solid and superior performance and may play an important role in the EH prediction.Clinical relevance statementWe constructed a novel radiomics nomogram, which can be a very useful tool for predicting cochlear and vestibular endolymphatic hydrops in Meniere ’s disease patients.Key Points•This is the first T2-SPACE-based nomogram to predict cochlear and vestibular endolymphatic hydrops.•The nomogram is of great value to patients who are unable...
Source: European Radiology - March 8, 2024 Category: Radiology Source Type: research
Safety of non-ionic contrast media in CT examinations for out-patients: retrospective multicenter analysis of 473,482 patients
ConclusionThe use of NICM for out-patients is in general safe with a low ADR incidence. The type of contrast medium (iopromide) and the seasons (summer and autumn) were associated with a higher risk of acute ADRs. Late ADRs were more often observed with iodixanol.Clinical relevance statementIn comparison to in-patients, out-patients may be exposed to higher risk due to a lack of extensive risk screening, less nursing care, and higher throughput pressure. Safety data about NICM from a large population may complement guidelines and avoid ambiguity.Key Points•The incidence and risk factors for adverse events after using non...
Source: European Radiology - March 8, 2024 Category: Radiology Source Type: research
A novel radiomics nomogram based on T2-sampling perfection with application-optimized contrasts using different flip-angle evolutions (SPACE) images for predicting cochlear and vestibular endolymphatic hydrops in Meniere ’s disease patients
ConclusionThe novel radiomics nomograms based on T2-SPACE images were successfully constructed to predict cochlear and vestibular EH in Meniere ’s disease. The models showed a solid and superior performance and may play an important role in the EH prediction.Clinical relevance statementWe constructed a novel radiomics nomogram, which can be a very useful tool for predicting cochlear and vestibular endolymphatic hydrops in Meniere ’s disease patients.Key Points•This is the first T2-SPACE-based nomogram to predict cochlear and vestibular endolymphatic hydrops.•The nomogram is of great value to patients who are unable...
Source: European Radiology - March 8, 2024 Category: Radiology Source Type: research
Cine-cardiac magnetic resonance to distinguish between ischemic and non-ischemic cardiomyopathies: a machine learning approach
ConclusionThe current study demonstrated that using a ML model, multi chamber myocardial strain, and function on non-contrast CMR parameters enables the discrimination between ICM and NICM with competitive diagnostic accuracy.Clinical relevance statementA machine learning model based on non-contrast cardiovascular magnetic resonance parameters may discriminate between ischemic and non-ischemic cardiomyopathy enabling wider access to cardiovascular magnetic resonance examinations with lower costs and faster imaging acquisition.Key Points• The exponential growth in cardiovascular magnetic resonance examinations may require...
Source: European Radiology - March 7, 2024 Category: Radiology Source Type: research
Of editorial processes, AI models, and medical literature: the Magnetic Resonance Audiometry experiment
AbstractThe potential of artificial intelligence (AI) in the field of medical research is unquestionable. Nevertheless, the scientific community has raised several concerns about a possible fraudulent use of these tools that might be used to generate inaccurate or, in extreme cases, erroneous messages that could find their way into the literature. In this experiment, we asked a generative AI program to write a technical report on a non-existing Magnetic Resonance Imaging technique called Magnetic Resonance Audiometry, receiving in return a full seemingly technically sound report, substantiated by equations and references. ...
Source: European Radiology - March 7, 2024 Category: Radiology Source Type: research
The emperor has few clothes: a realistic appraisal of current AI in radiology
(Source: European Radiology)
Source: European Radiology - March 7, 2024 Category: Radiology Source Type: research
Can cone-beam CT evaluation of the temporomandibular joint (TMJ) be the standard criteria for the positional and morphological evaluation of TMJ osseous structures?
(Source: European Radiology)
Source: European Radiology - March 7, 2024 Category: Radiology Source Type: research
Cine-cardiac magnetic resonance to distinguish between ischemic and non-ischemic cardiomyopathies: a machine learning approach
ConclusionThe current study demonstrated that using a ML model, multi chamber myocardial strain, and function on non-contrast CMR parameters enables the discrimination between ICM and NICM with competitive diagnostic accuracy.Clinical relevance statementA machine learning model based on non-contrast cardiovascular magnetic resonance parameters may discriminate between ischemic and non-ischemic cardiomyopathy enabling wider access to cardiovascular magnetic resonance examinations with lower costs and faster imaging acquisition.Key Points• The exponential growth in cardiovascular magnetic resonance examinations may require...
Source: European Radiology - March 7, 2024 Category: Radiology Source Type: research
