Zeyu Piao, Mingzhu Meng, Huijie Yang, Tongqing Xue, Zhongzhi Jia, Wei Liu
BACKGROUND: You Only Look Once version 5 (YOLOv5), a one-stage deep-learning (DL) algorithm for object detection and classification, offers high speed and accuracy for identifying targets. PURPOSE: To investigate the feasibility of using the YOLOv5 algorithm to non-invasively distinguish between aldosterone-producing adenomas (APAs) and non-functional adrenocortical adenomas (NF-ACAs) on computed tomography (CT) images. MATERIAL AND METHODS: A total of 235 patients who were diagnosed with ACAs between January 2011 and July 2022 were included in this study...
May 20, 2024: Acta Radiologica
Libin Yang, Xiaomin Dai, Jiawei Su, Shengsheng Yang, Yonghong Zheng, Mingping Ma, Shun Yu
BACKGROUND: Discriminating the stage of Graves' ophthalmopathy (GO) is crucial for clinical decision. Application of conventional T2-weighted imaging in the staging is still limited. PURPOSE: To evaluate the performance of T2 mapping based on two different regions of interest (ROIs) for staging GO. MATERIAL AND METHODS: In total, 56 GO patients were retrospectively enrolled and divided into two groups according to the clinical activity score (CAS)...
May 20, 2024: Acta Radiologica
Andrzej Urbanik, Wiesław Guz, Maciej Brożyna, Monika Ostrogórska
BACKGROUND: Football (soccer) is the world's most popular team sport. PURPOSE: To comprehensively examine the brain in football (soccer) players, with the use of magnetic resonance imaging (MRI) techniques. MATERIAL AND METHODS: The study involved 65 football players and 62 controls. The MR examinations were performed using MR 1.5-T system (Optima MR 360; GE Medical Systems). The examinations were carried out in the 3D Bravo, CUBE, FSEpropeller, and diffusion-weighted imaging (DWI) sequences...
May 20, 2024: Acta Radiologica
Flemming Kromann Nielsen, Flemming Brandt Sørensen, Niels Egund, Lene Warner Boel, Carsten Holm, Anne Grethe Jurik
BACKGROUND: Bone marrow lesions (BMLs) in knee osteoarthritis (OA) have been assessed histopathologically and by dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI); however, a direct comparison of the results has not been reported. PURPOSE: To evaluate and compare the findings by DCE-MRI and histopathology of subchondral BMLs in knee OA. MATERIAL AND METHODS: In total, 19 patients with medial tibiofemoral knee OA undergoing total knee arthroplasty were analyzed...
May 20, 2024: Acta Radiologica
Sirkku Setänen, Harri Merisaari, Virva Saunavaara, Karoliina Uusitalo, Katri Lahti, Peter Ngum, Leena Haataja, Riitta Parkkola
BACKGROUND: Major brain injuries in structural brain magnetic resonance imaging (MRI) at term affect concurrent diffusion tensor imaging (DTI) parameters in very preterm infants. White matter is known to gradually maturate along with increasing gestational age, which is characterized by increasing fractional anisotropy (FA) and decreasing mean diffusivity (MD). PURPOSE: To study the difference between DTI parameters at term and 13 years in adolescents born very preterm with and without major pathologies in structural brain MRI at term...
May 17, 2024: Acta Radiologica
Omar Seyam, Fabiano N Cardoso, Suhitha Bysani, Bianca Constantin, Juan Pretell-Mazzini, Ty Subhawong
Pseudolesions in bone and muscle are encountered mostly incidentally in routine imaging studies, especially due to the recent advancements on many different imaging modalities. These lesions can be categorized into the following categories: normal variants; congenital; iatrogenic; degenerative; and postoperative. In this review, we discuss the many different radiological characteristics of musculoskeletal pseudolesions that appear on imaging, which can prevent non-essential additional studies.
May 16, 2024: Acta Radiologica
Syed Ali Raza Naqvi, Ahmad Junaid Hassan, Muhammad Ramzan Saeed Ashraf Janjua, Naseem Abbas, Ameer Fawad Zahoor, Sadaf Ul Hassan, Amjad Hussain
BACKGROUND: Advances in molecular imaging strategies have had an effect on precise diagnosis and treatment. Research has been intensified to develop more effective and versatile radiopharmaceuticals to uplift diagnostic efficiency and, consequently, the treatment. PURPOSE: To label the flutamide (FLUT) coupled with diethylenetriamine pentaacetate (DTPA) with technetium-99 m (99m Tc) and to evaluate its binding efficiency with rhabdomyosarcoma (RMS) cancer cells...
May 15, 2024: Acta Radiologica
Yuemei Zheng, Hong Wang, Tingting Weng, Qiong Li, Li Guo
BACKGROUND: Ovarian thecoma-fibroma and solid ovarian cancer have similar clinical and imaging features, and it is difficult for radiologists to differentiate them. Since the treatment and prognosis of them are different, accurate characterization is crucial. PURPOSE: To non-invasively differentiate ovarian thecoma-fibroma and solid ovarian cancer by convolutional neural network based on magnetic resonance imaging (MRI), and to provide the interpretability of the model...
May 15, 2024: Acta Radiologica
Yoshie Kunihiro, Tsuneo Matsumoto, Hideko Onoda, Tomoyuki Murakami, Masato Iduki, Yasushi Hirano, Katsuyoshi Ito
BACKGROUND: The results of a quantitative analysis of computed tomography (CT) of interstitial lung disease (ILD) using a computer-aided detection (CAD) technique were correlated with the results of pulmonary function tests. PURPOSE: To evaluate the correlation between a quantitative analysis of CT of progressive fibrosing interstitial lung disease (PF-ILD) including idiopathic pulmonary fibrosis (IPF) and non-IPF, which can manifest progressive pulmonary fibrosis and the vital capacity (VC), and to identify indicators for the assessment of a decreased VC...
May 15, 2024: Acta Radiologica
Athina C Tsili, Thomas Benekos, Maria I Argyropoulou
The Ancient Greeks were great innovators in all academic fields, including medicine. Hippocrates of Kos, the Father of Medicine, established many terms for the genitourinary (GU) system, such as nephros, urethra, urogenital, and adenocarcinoma. According to Hesiod's Theogony , Aphrodite, the goddess of love and beauty, was born off the coast of Kythera, from the foam produced by Uranus's genitals, after his son Cronus had thrown them into to the sea. In this review, we present the etymology of the GU vocabulary, review the Ancient Greeks' understanding of the GU system and the origins of Greek myths related to the male genitals...
May 8, 2024: Acta Radiologica
Weiwei Zhao, Chenxi Liu, Yi Huan, Yuyu Bi, Yuanqiang Zhu, Weiqi Zhang, Shuai Wang, Yong Yang, Zhiyong Quan
BACKGROUND: Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) with an extended Tofts linear (ETL) model for tissue and tumor evaluation has been established, but its effectiveness in evaluating the pancreas remains uncertain. PURPOSE: To understand the pharmacokinetics of normal pancreas and serve as a reference for future studies of pancreatic diseases. MATERIAL AND METHODS: Pancreatic pharmacokinetic parameters of 54 volunteers were calculated using DCE-MRI with the ETL model...
May 7, 2024: Acta Radiologica
Shahriar Atai, Martin Knudtzon Andersen, Markus Wiedmann, Daniel Dahlberg, Kristin Astrid B Øystese, Jens Bollerslev, Geir Ringstad, Ansgar Heck
BACKGROUND: In acromegaly, the primary tumor is usually found during magnetic resonance imaging (MRI) of the pituitary gland. A remnant tumor after surgery is, however, harder to depict. When a tumor is missed, the remaining option is usually lifelong pharmacological treatment. PURPOSE: To identify tumors by reassessment of all available MRI scans in pharmacologically treated patients, operated or not, and to compare our results with the routine MRI reports. MATERIAL AND METHODS: Adult patients diagnosed with acromegaly and managed at a tertiary care center between 2005 and 2021 and currently on pharmacological treatment were included...
April 24, 2024: Acta Radiologica
Duygu Erkal Tonkaz, Rifat Ozpar, Mehmet Tonkaz, Zeynep Yazici
BACKGROUND: Fat quantification methods in magnetic resonance imaging (MRI) have been studied to differentiate bone marrow pathologies in adult patients; however, scarce literature is available in pediatric patients. PURPOSE: To evaluate the efficacy of the T1 signal intensity value (T1-SIV), out-of-phase/in-phase signal ratio (OP/IP SR), and fat fraction (FF) to differentiate between normal, benign, and malignant pathological processes. MATERIAL AND METHODS: A total of 48 pediatric patients with lumbar and pelvic MRI were classified into three groups according to bone marrow pathology (group 1, normal; group 2, benign pathology/reconversion; group 3, malignant)...
April 24, 2024: Acta Radiologica
Si-Ru Kang, Kai Wang
BACKGROUND: We aimed to establish a novel model using a radiomics analysis of magnetic resonance (MR) images for predicting osteoporosis. PURPOSE: To investigate the effectiveness of a radiomics approach utilizing magnetic resonance imaging (MRI) of the lumbar spine in identifying osteoporosis. MATERIAL AND METHODS: In this retrospective study, a total of 291 patients who underwent MRI were analyzed. Radiomics features were extracted from the MRI scans of all 1455 lumbar vertebrae, and build the radiomics model based on T2-weighted (T2W), T1-weighted (T1W), and T2W + T1W imaging...
April 23, 2024: Acta Radiologica
Tariq Ali, Ahmad Al-Thaher, Karen Man Yan Chan, Zahra Al-Alwani, Amr Moussa, Kelvin Tan
BACKGROUND: Percutaneous cholecystostomy (PC) is a therapeutic intervention for acute cholecystitis. The benefits of cholecystostomy have been demonstrated in the medical literature, with up to 90% of acute cholecystitis cases shown to resolve postoperatively, and only 40% of patients subsequently undergoing an interval cholecystectomy. PURPOSE: To compare the survival outcomes between acute complicated and uncomplicated cholecystitis in patients undergoing PC as an initial intervention, as there is a paucity of evidence in the literature on this perspective...
April 22, 2024: Acta Radiologica
Yingxia She, Xianwang Liu, Jian Jiang, Xuwen Wang, Qian Niu, Junlin Zhou
BACKGROUND: The grading of adult isocitrate dehydrogenase (IDH)-mutant astrocytomas is a crucial prognostic factor. PURPOSE: To investigate the value of conventional magnetic resonance imaging (MRI) features and apparent diffusion coefficient (ADC) in the grading of adult IDH-mutant astrocytomas, and to analyze the correlation between ADC and the Ki-67 proliferation index. MATERIAL AND METHODS: The clinical and MRI data of 82 patients with adult IDH-mutant astrocytoma who underwent surgical resection and molecular genetic testing with IDH and 1p/19q were retrospectively analyzed...
April 22, 2024: Acta Radiologica
Leyla Ramazanoglu, Kalyoncu Isil Aslan, Yilmaz Onal, Murat Velioglu, Osman Melih Topcuoglu
BACKGROUND: The safety and efficacy of mechanical thrombectomy (MT) for proximal large vessel occlusion after acute ischemic stroke (AIS) have been demonstrated. Clinical investigations of endovascular approaches for treating AIS due to M2 occlusions have been ongoing. PURPOSE: To assess the outcomes of M2 occlusions according to treatment modality and anatomical division. METHODS: A total of 113 consecutive M2 occlusions treated with endovascular treatment (EVT) at our tertiary stroke center between January 2019 and December 2022 were retrospectively analyzed...
April 22, 2024: Acta Radiologica
Murat Vural, Betül Akdal Dölek, Gülsüm Kılıçkap, Gülsüm Kübra Bahadır, Yasin Celal Güneş
BACKGROUND: Epicardial adipose tissue (EAT) volume is usually measured with ECG-gated computed tomography (CT). Measurement of EAT thickness is a more convenient method; however, it is not clear whether EAT thickness measured with non-gated CT is reliable and at which localization it agrees best with the EAT volume. PURPOSE: To examine the agreement between ECG-gated EAT volume and non-gated EAT thickness measured from various localizations and to assess the predictive role of EAT thickness for high EAT volume...
April 22, 2024: Acta Radiologica
Olga Sliwicka, Luuk J Oostveen, Zaneta Swiderska Chadaj, Wouter M van Everdingen, Koen Michielsen, Jessie Gommers, Monique Brink, Miranda Snoeren, Khibar Salah, Liesbeth Peters-Bax, Tip Stille, Jesse Habets, Ioannis Sechopoulos
BACKGROUND: Dynamic myocardial computed tomography perfusion (CTP) is a novel imaging technique that increases the applicability of CT for cardiac imaging; however, the scanning requires a substantial radiation dose. PURPOSE: To investigate the feasibility of dose reduction in dynamic CTP by comparing all-heartbeat acquisitions to periodic skipping of heartbeats. MATERIAL AND METHODS: We retrieved imaging data of 38 dynamic CTP patients and created new datasets with every fourth, third or second beat (Skip1:4, Skip1:3, Skip1:2, respectively) removed...
April 17, 2024: Acta Radiologica
Su Young Yun, Young Jin Heo
BACKGROUND: Post-contrast T1-Sampling Perfection with Application-optimized Contrasts using different flip angle Evolutions (SPACE) is the preferred 3D T1 spin-echo sequence for evaluating brain metastases, regardless of the prolonged scan time. PURPOSE: To evaluate the application of accelerated post-contrast T1-SPACE with iterative denoising (ID) for intracranial enhancing lesions in oncologic patients. MATERIAL AND METHODS: For evaluation of intracranial lesions, 108 patients underwent standard and accelerated T1-SPACE during the same imaging session...
April 16, 2024: Acta Radiologica
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.