journal
https://read.qxmd.com/read/38882634/imaging-differentiation-of-solid-pseudopapillary-neoplasms-and-neuroendocrine-neoplasms-of-the-pancreas
#1
JOURNAL ARTICLE
Ekaterina Khristenko, Matthias M Gaida, Christine Tjaden, Verena Steinle, Martin Loos, Korbinian Krieger, Tim F Weber, Hans-Ulrich Kauczor, Miriam Klauß, Philipp Mayer
PURPOSE: The present study aimed to compare the computed tomography (CT) and magnetic resonance imaging (MRI) features of solid pseudopapillary neoplasms (SPNs) and pancreatic neuroendocrine neoplasms (pNENs). METHOD: Lesion imaging features of 39 patients with SPNs and 127 patients with pNENs were retrospectively extracted from 104 CT and 91 MRI scans. RESULTS: Compared to pNEN patients, SPN patients were significantly younger (mean age 51...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38882633/roles-of-spectral-dual-layer-ct-d-dimer-concentration-and-covid-19-pneumonia-in-diagnosis-of-pulmonary-embolism
#2
JOURNAL ARTICLE
Tomáš Jůza, Vlastimil Válek, Daniel Vlk, Marek Dostál, Tomáš Andrašina
PURPOSE: To demonstrate advantages of spectral dual-layer computed tomography (CT) in diagnosing pulmonary embolism (PE). To compare D-dimer values in patients with PE and concomitant COVID-19 pneumonia to those in patients without PE and COVID-19 pneumonia. To compare D-dimer values in cases of minor versus extensive PE. METHODS: A monocentric retrospective study of 1500 CT pulmonary angiographies (CTPAs). Three groups of 500 consecutive examinations: 1) using conventional multidetector CT (CTC), 2) using spectral dual-layer CT (CTS), and 3) of COVID-19 pneumonia patients using spectral dual-layer CT (COV)...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38882632/increasing-the-rate-of-datasets-amenable-to-ct-ffr-and-quantitative-plaque-analysis-value-of-software-for-reducing-stair-step-artifacts-demonstrated-in-photon-counting-detector-ct
#3
JOURNAL ARTICLE
Costanza Lisi, Lukas J Moser, Victor Mergen, Thomas Flohr, Matthias Eberhard, Hatem Alkadhi
PURPOSE: To determine the value of an algorithm for reducing stair-step artifacts for advanced coronary analyses in sequential mode coronary CT angiography (CCTA). METHODS: Forty patients undergoing sequential mode photon-counting detector CCTA with at least one stair-step artifact were included. Twenty patients (14 males; mean age 57±17years) with 45 segments showing stair-step artifacts and without atherosclerosis were included for CTFFR analysis. Twenty patients (20 males; mean age 74±13years) with 22 segments showing stair-step artifacts crossing an atherosclerotic plaque were included for quantitative plaque analysis...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38872711/t1-and-t2-mapping-in-pancreatic-mri-current-evidence-and-future-perspectives
#4
JOURNAL ARTICLE
Alessandro Beleù, Davide Canonico, Giovanni Morana
Conventional T1- and T2-weighted magnetic resonance imaging (MRI) of the pancreas can vary significantly due to factors such as scanner differences and pulse sequence variations. This review explores T1 and T2 mapping techniques, modern MRI methods providing quantitative information about tissue relaxation times. Various T1 and T2 mapping pulse sequences are currently under investigation. Clinical and research applications of T1 and T2 mapping in the pancreas include their correlation with fibrosis, inflammation, and neoplasms...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38859979/investigation-in-image-quality-and-immediate-patient-safety-using-pre-dual-flow-injection-for-low-contrast-dose-spectral-pulmonary-artery-ct-angiography
#5
JOURNAL ARTICLE
Liwei Xue, Qing Zhong, Nianjie Xu, Yanping Zheng, Yuanfen Liu
PURPOSE: The patient safety of iodine contrast-enhanced pulmonary artery CT angiography (CTPA) is widely concerned. This study aimed to investigate the image quality and immediate patient safety of spectral CTPA using a lower-contrast dose pre-dual-flow injection method. METHODS: This retrospective study included 120 patients with suspected pulmonary embolisms who received spectral CTPA between February and December 2022. Patients were divided into normal contrast injection (Group A, n=60) and pre-dual-flow group (Group B, n=60)...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38855720/shear-wave-elastography-for-solid-breast-masses-evaluation-quantitative-measurement-of-mean-elasticity-value-and-elasticity-ratio
#6
JOURNAL ARTICLE
N Marukatat, P Parklug, S Issaragrisil, C Sumanasrethakul
PURPOSE: Shear wave elastography (SWE), an ultrasonographic technique to measure the elasticity of mass lesions to evaluate breast mass. This study aimed to find out the cutoff values identifying breast malignancy using the mean elasticity (E-mean) and elasticity ratio (E-ratio) of breast masses. METHODS: This retrospective study included women underwent SWE and US-guided biopsy of breast masses. During conventional US, the SWE mode was also performed, determining elasticity measurements, E-mean and E-ratio...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38828096/super-resolution-deep-learning-reconstruction-for-coronary-ct-angiography-a-structured-phantom-study
#7
JOURNAL ARTICLE
Toru Higaki, Fuminari Tatsugami, Mickaël Ohana, Yuko Nakamura, Ikuo Kawashita, Kazuo Awai
PURPOSE: Super-resolution deep-learning-based reconstruction: SR-DLR is a newly developed and clinically available deep-learning-based image reconstruction method that can improve the spatial resolution of CT images. The image quality of the output from non-linear image reconstructions, such as DLR, is known to vary depending on the structure of the object being scanned, and a simple phantom cannot explicitly evaluate the clinical performance of SR-DLR. This study aims to accurately investigate the quality of the images reconstructed by SR-DLR by utilizing a structured phantom that simulates the human anatomy in coronary CT angiography...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38765668/insertional-achilles-tendinopathy-a-radiographic-cross-sectional-comparison-between-symptomatic-and-asymptomatic-heel-of-71-patients
#8
JOURNAL ARTICLE
Kenichiro Nakajima
PURPOSE: This retrospective study aimed to investigate whether the standard radiographic indicators for Haglund's syndrome are applicable to insertional Achilles tendinopathy. METHODS: Patients who underwent surgery for insertional Achilles tendinopathy in one heel and experienced no pain in the other heel were enrolled in this study. Preoperative calibrated radiographs of the lateral view of the calcaneus were assessed using (1) calcaneal pitch angle, (2) Fowler-Phillip angle, (3) posterior calcaneal angle, (4) Chauveau-Liet angle, (5) X/Y ratio, (6) Haglund's deformity height, (7) Haglund's deformity peak angle, (8) calcification length, (9) calcification width, (10) parallel pitch test, and (11) presence of free body...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38711678/advanced-deep-learning-based-image-reconstruction-in-lumbar-spine-mri-at-0-55%C3%A2-t-effects-on-image-quality-and-acquisition-time-in-comparison-to-conventional-deep-learning-based-reconstruction
#9
JOURNAL ARTICLE
Felix Schlicht, Jan Vosshenrich, Ricardo Donners, Alina Carolin Seifert, Matthias Fenchel, Dominik Nickel, Markus Obmann, Dorothee Harder, Hanns-Christian Breit
OBJECTIVES: To evaluate an optimized deep leaning-based image post-processing technique in lumbar spine MRI at 0.55 T in terms of image quality and image acquisition time. MATERIALS AND METHODS: Lumbar spine imaging was conducted on 18 patients using a 0.55 T MRI scanner, employing conventional (CDLR) and advanced (ADLR) deep learning-based post-processing techniques. Two musculoskeletal radiologists visually evaluated the images using a 5-point Likert scale to assess image quality and resolution...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38699593/comparing-2-dimensional-versus-3-dimensional-mr-myelography-for-cerebrospinal-fluid-leak-detection
#10
JOURNAL ARTICLE
Iichiro Osawa, Takashi Mitsufuji, Keita Nagawa, Yuki Hara, Toshimasa Yamamoto, Nobuo Araki, Eito Kozawa
PURPOSE: We compared cerebrospinal fluid (CSF) leak conspicuity and image quality as visualized using 3D versus 2D magnetic resonance (MR) myelography in patients with spinal CSF leaks. METHODS: Eighteen patients underwent spinal MR imaging at 3 Tesla. Three board-certified radiologists independently evaluated CSF leak conspicuity and image quality on a 4-point scale; the latter assessed by scoring fat suppression, venous visualization, and severity of CSF flow artifacts...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38699592/machine-learning-approaches-in-the-prediction-of-positive-axillary-lymph-nodes-post-neoadjuvant-chemotherapy-using-mri-ct-or-ultrasound-a-systematic-review
#11
REVIEW
Shirin Yaghoobpoor, Mobina Fathi, Hamed Ghorani, Parya Valizadeh, Payam Jannatdoust, Arian Tavasol, Melika Zarei, Arvin Arian
BACKGROUND AND OBJECTIVE: Neoadjuvant chemotherapy is a standard treatment approach for locally advanced breast cancer. Conventional imaging modalities, such as magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound, have been used for axillary lymph node evaluation which is crucial for treatment planning and prognostication. This systematic review aims to comprehensively examine the current research on applying machine learning algorithms for predicting positive axillary lymph nodes following neoadjuvant chemotherapy utilizing imaging modalities, including MRI, CT, and ultrasound...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38681663/narrow-band-imaging-based-radiogenomics-for-predicting-radiosensitivity-in-nasopharyngeal-carcinoma
#12
JOURNAL ARTICLE
Cheng-Wei Tie, Xin Dong, Ji-Qing Zhu, Kai Wang, Xu-Dong Liu, Yu-Meng Liu, Gui-Qi Wang, Ye Zhang, Xiao-Guang Ni
OBJECTIVES: This study aims to assess the efficacy of narrow band imaging (NBI) endoscopy in utilizing radiomics for predicting radiosensitivity in nasopharyngeal carcinoma (NPC), and to explore the associated molecular mechanisms. MATERIALS: The study included 57 NPC patients who were pathologically diagnosed and underwent RNA sequencing. They were categorized into complete response (CR) and partial response (PR) groups after receiving radical concurrent chemoradiotherapy...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38681662/modified-respiratory-triggered-space-sequences-for-magnetic-resonance-cholangiopancreatography
#13
JOURNAL ARTICLE
Dayong Jin, Xin Li, Yifan Qian, Yanqiang Qiao, Liyao Liu, Juan Tian, Lei Wang, Yongli Ma, Yue Qin, Yinhu Zhu
BACKGROUND: Respiratory-triggered (RT) and breath-hold are the most common acquisition modalities for magnetic resonance cholangiopancreatography (MRCP). The present study compared the three different acquisition modalities for optimizing the use of MRCP in patients with diseases of the pancreatic and biliary systems. MATERIALS AND METHODS: Three MRCP acquisition modalities were used in this study: conventional respiratory-triggered sampling perfection with application-optimized contrasts using different flip evolutions (RT-SPACE), modified RT-SPACE, and breath-hold (BH)-SPACE...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38681661/diagnostic-performance-of-different-imaging-modalities-for-splenic-malignancies-a-comparative-meta-analysis
#14
JOURNAL ARTICLE
Parya Valizadeh, Payam Jannatdoust, Mohammadreza Tahamtan, Hamed Ghorani, Soroush Soleimani Dorcheh, Khashayar Farnoud, Faeze Salahshour
BACKGROUND AND OBJECTIVES: The spleen hosts both benign and malignant lesions. Despite multiple imaging modalities, the distinction between these lesions poses a diagnostic challenge, marked by varying diagnostic accuracy levels across methods. In this study, we aimed to evaluate and compare the diagnostic performance of various imaging techniques for detecting malignant splenic lesions. METHODS: Following PRISMA guidelines, we searched PubMed, Scopus, and Web of Sciences databases for studies evaluating imaging techniques in detecting malignant splenic lesions...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38660370/reproducing-recist-lesion-selection-via-machine-learning-insights-into-intra-and-inter-radiologist-variation
#15
JOURNAL ARTICLE
Teresa M Tareco Bucho, Liliana Petrychenko, Mohamed A Abdelatty, Nino Bogveradze, Zuhir Bodalal, Regina G H Beets-Tan, Stefano Trebeschi
BACKGROUND: The Response Evaluation Criteria in Solid Tumors (RECIST) aims to provide a standardized approach to assess treatment response in solid tumors. However, discrepancies in the selection of measurable and target lesions among radiologists using these criteria pose a significant limitation to their reproducibility and accuracy. This study aimed to understand the factors contributing to this variability. METHODS: Machine learning models were used to replicate, in parallel, the selection process of measurable and target lesions by two radiologists in a cohort of 40 patients from an internal pan-cancer dataset...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38559359/evaluation-of-multi-parameter-mri-in-preoperative-staging-of-endometrial-carcinoma
#16
JOURNAL ARTICLE
Lianbi Zhang, Liqiong Liu
BACKGROUND: Endometrial carcinoma (EC) is a prevalent gynecological malignancy, necessitating accurate preoperative staging for effective treatment planning. This study explores the application value of multi-parameter MRI in diagnosing and staging endometrial cancer. METHODS: Seventy-six patients diagnosed with endometrial cancer underwent 3.0 T pelvic MRI within two weeks before surgery. Imaging data were analyzed based on FIGO clinical staging criteria...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38544918/radiomics-approach-to-distinguish-between-benign-and-malignant-soft-tissue-tumors-on-magnetic-resonance-imaging
#17
JOURNAL ARTICLE
Lei Xu, Meng-Yue Wang, Liang Qi, Yue-Fen Zou, W U Fei-Yun, Xiu-Lan Sun
OBJECTIVE: To build a radiomics signature based on MRI images and evaluate its capability for preoperatively identifying the benign and malignant Soft tissue neoplasms (STTs). MATERIALS AND METHODS: 193 patients (99 malignant STTs and 94 benign STTs) were at random segmented into a training cohort (69 malignant STTs and 65 benign STTs) and a validation cohort (30 malignant STTs and 29 benign STTs) with a portion of 7:3. Radiomics features were extracted from T2 with fat saturation and T1 with fat saturation and gadolinium contrast images...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38544917/differentiation-between-normal-and-metastatic-lymph-nodes-in-patients-with-skin-melanoma-preliminary-findings-using-a-dixon-based-whole-body-mri-approach
#18
JOURNAL ARTICLE
C Brussaard, L Faggioni, F E Ramirez-Barbosa, M Vervoort, Y Jansen, B Neyns, J de Mey, I Willekens, D Cioni, E Neri
PURPOSE: Metastatic melanoma lymph nodes (MMLns) might be challenging to detect on MR-WBI, as both MMLns and normal lymph nodes (NLns) can show restricted water diffusion. Our purpose is to assess the potential contribution of the DIXON sequence in differentiating MMLns from NLns. MATERIAL AND METHODS: We followed a cohort of 107 patients with stage IIIb/c and IV skin melanoma for 32 months using MR-WBI with DIXON, STIR, and DWI/ADC sequences. We compared signal intensity (SI) values of MMLns and NLns in the four series of the DIXON sequence (in/out-of-phase, fat_only, and water_only series)...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38495213/fast-5-minute-shoulder-mri-protocol-with-accelerated-tse-sequences-and-deep-learning-image-reconstruction-for-the-assessment-of-shoulder-pain-at-1-5-and-3%C3%A2-tesla
#19
JOURNAL ARTICLE
Judith Herrmann, You-Shan Feng, Sebastian Gassenmaier, Jan-Peter Grunz, Gregor Koerzdoerfer, Andreas Lingg, Haidara Almansour, Dominik Nickel, Ahmed E Othman, Saif Afat
PURPOSE: The objective of this study was to implement a 5-minute MRI protocol for the shoulder in routine clinical practice consisting of accelerated 2D turbo spin echo (TSE) sequences with deep learning (DL) reconstruction at 1.5 and 3 Tesla, and to compare the image quality and diagnostic performance to that of a standard 2D TSE protocol. METHODS: Patients undergoing shoulder MRI between October 2020 and June 2021 were prospectively enrolled. Each patient underwent two MRI examinations: first a standard, fully sampled TSE (TSES ) protocol reconstructed with a standard reconstruction followed by a second fast, prospectively undersampled TSE protocol with a conventional parallel imaging undersampling pattern reconstructed with a DL reconstruction (TSEDL )...
June 2024: European Journal of Radiology Open
https://read.qxmd.com/read/38482518/detection-of-acute-pulmonary-embolism-using-native-repeated-magnetic-resonance-imaging-acquisitions-under-free-breathing-and-without-respiratory-or-cardiac-gating-a-diagnostic-accuracy-study
#20
JOURNAL ARTICLE
Koshiar Medson, Roberto Vargas Paris, Alexander Fyrdahl, Peder Wiklund, Sven Nyren, Eli Westerlund, Peter Lindholm
OBJECTIVES: Computed tomography pulmonary angiography (CTPA) is the gold standard diagnostic method for patients with suspected pulmonary embolism (PE), but it has its drawbacks, including exposure to ionizing radiation and iodinated contrast agent. The present study aims to evaluate the diagnostic performance of our in-house developed non-contrast MRI protocol for PE diagnosis in reference to CTPA. METHODS: 107 patients were included, all of whom underwent MRI immediately before or within 36 hours after CTPA...
June 2024: European Journal of Radiology Open
journal
journal
50007
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.