Amit Gupta, Devasenathipathy Kandasamy, Raju Sharma, Nishikant Damle, Ankur Goyal, Alpesh Goyal, Shipra Agarwal, Yamini Dharmashaktu
BACKGROUND: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome associated with phosphaturic mesenchymal tumors (PMTs). Localization of the causative tumor in these cases is an arduous task since the culprit lesions are usually small, slow-growing, and can be located almost anywhere from head to toe. PURPOSE: To describe the morphological characteristics of histologically proven PMTs on various radiological modalities. MATERIAL AND METHODS: After institutional ethical approval, this retrospective study analyzed 20 cases with a histopathological evidence of PMT...
March 13, 2023: Acta Radiologica
Tiebao Meng, Huiming Liu, Jinbo Liu, Feixiang Wang, Chuanmiao Xie, Liangru Ke, Haoqiang He
BACKGROUND: Field-of-view optimized and constrained undistorted single-shot imaging (FOCUS) is a new sequence that shows enhanced anatomical details, improving the diffusion-weighted (DW) images. PURPOSE: To investigate the value of FOCUS diffusion-weighted imaging (DWI) in the evaluation of nasopharyngeal carcinoma (NPC) and compare it with the single-shot echo planner imaging (SS-EPI) DWI approach. MATERIAL AND METHODS: A total of 87 patients with NPC underwent magnetic resonance imaging, including FOCUS and SS-EPI DWI sequences...
March 13, 2023: Acta Radiologica
Namita Mohindra, Neeraj Jain, Shubham Yadav, Vinita Agrawal, Prabhakar Mishra, Anjali Mishra, Gaurav Agarwal
BACKGROUND: Tumor neo-angiogenesis plays an important role in the development and growth of breast cancers, but its detection by imaging is challenging. A novel microvascular imaging (MVI) technique, Angio-PLUS, promises to overcome the limitations of color Doppler (CD) in detecting low-velocity flow and small diameter vessels. PURPOSE: To determine the utility of the Angio-PLUS technique for detecting blood flow in breast masses and compare it with CD for differentiating benign from malignant masses...
March 8, 2023: Acta Radiologica
Lucja Mlynska, Amer Malouhi, Maja Ingwersen, Felix Güttler, Stephanie Gräger, Ulf Teichgräber
BACKGROUND: In hospitals, it is crucial to rule out coronavirus disease 2019 (COVID-19) timely and reliably. Artificial intelligence (AI) provides sufficient accuracy to identify chest computed tomography (CT) scans with signs of COVID-19. PURPOSE: To compare the diagnostic accuracy of radiologists with different levels of experience with and without assistance of AI in CT evaluation for COVID-19 pneumonia and to develop an optimized diagnostic pathway. MATERIAL AND METHODS: The retrospective, single-center, comparative case-control study included 160 consecutive participants who had undergone chest CT scan between March 2020 and May 2021 without or with confirmed diagnosis of COVID-19 pneumonia in a ratio of 1:3...
March 8, 2023: Acta Radiologica
Sabahattin Yuzkan, Serdar Balsak, Ufuk Cinkir, Burak Kocak
BACKGROUND: Multiple sclerosis (MS) and cerebral small vessel disease (CSVD) are relatively common radiological entities that occasionally necessitate differential diagnosis. PURPOSE: To investigate the differences in magnetic resonance imaging (MRI) signal intensity (SI) between MS and CSVD related white matter lesions. MATERIAL AND METHODS: On 1.5-T and 3-T MRI scanners, 50 patients with MS (380 lesions) and 50 patients with CSVD (395 lesions) were retrospectively evaluated...
March 2, 2023: Acta Radiologica
Zengfa Huang, Yi Ding, Yang Yang, Shengchao Zhao, Shutong Zhang, Jianwei Xiao, Chengyu Ding, Ning Guo, Zuoqin Li, Shiguang Zhou, Guijuan Cao, Xiang Wang
BACKGROUND: Limited studies have investigated the accuracy of therapeutic decision-making using machine learning-based coronary computed tomography angiography (ML-CCTA) compared with CCTA. PURPOSE: To investigate the performance of ML-CCTA for therapeutic decision compared with CCTA. MATERIAL AND METHODS: The study population consisted of 322 consecutive patients with stable coronary artery disease. The SYNTAX score was calculated with an online calculator based on ML-CCTA results...
February 27, 2023: Acta Radiologica
Homeira Karim, Maximilian Thormann, Jazan Omari, Alexey Surov, Regina Schinner, Ricarda Seidensticker, Maria Ingenerf, Jens Ricke, Christine Schmid-Tannwald
BACKGROUND: High-dose-rate computed tomography (CT)-guided brachytherapy (HDR-BT) has shown promising results in patients with hepatocellular carcinoma (HCC). While growing evidence shows clear limitations of mRECIST, diffusion-weighted imaging (DWI) has relevant potential in improving the response assessment. PURPOSE: To assess whether DWI allows evaluation of short- and long-term tumor response in patients with HCC after HDR-BT. MATERIAL AND METHODS: A total of 22 patients with 11 non-responding HCCs (NR-HCC; local tumor recurrence within two years) and 24 responding HCCs (R-HCC; follow-up at least two years) were included in this retrospective bi-center study...
February 26, 2023: Acta Radiologica
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February 14, 2023: Acta Radiologica
Dongdong Jiang, Yanan Wang, Peng Zhang, Zhenyu Liu
BACKGROUND: The effect of different computed tomography (CT) scanning methods of the shoulder on image quality is uncertain. PURPOSE: To compare the effect of different methods of CT scanning of the right shoulder on image quality and radiation dose. MATERIAL AND METHODS: A total of 30 adults were divided into five groups. Group A received scans centered on the body's long axis, a scout direction of 0° + 90°, and automatic tube current modulation (ATCM)...
February 12, 2023: Acta Radiologica
Mengsha Zou, Qin Zhou, Ruocheng Li, Manshi Hu, Long Qian, Zhiyun Yang, Jing Zhao
BACKGROUND: Synthetic magnetic resonance imaging (MRI) might replace the conventional MR sequences in brain evaluation to shorten scan time and obtain multiple quantitative parameters. PURPOSE: To evaluate the image quality of multiple-delay-multiple-echo (MDME) sequence-derived synthetic brain MR images compared to conventional images by considering a multi-age sample. MATERIAL AND METHODS: Image sets of conventional and synthetic MRI of 200 participants were included...
February 12, 2023: Acta Radiologica
Xiang Pan, He Cong, Xiaolei Wang, Heng Zhang, Yuxi Ge, Shudong Hu
BACKGROUND: Deep learning surpasses many traditional methods for many vision tasks, allowing the transformation of hierarchical features into more abstract, high-level features. PURPOSE: To evaluate the prognostic value of preoperative computed tomography (CT) image texture features and deep learning self-learning high-throughput features (SHF) on postoperative overall survival in the treatment of patients with colorectal cancer (CRC). MATERIAL AND METHODS: The dataset consisted of 810 enrolled patients with CRC confirmed from 10 November 2011 to 10 February 2018...
February 10, 2023: Acta Radiologica
Guillaume Gravel, Alexandre Roussel, Axel Guth, François Mellot
BACKGROUND: Percutaneous vertebroplasty (PVP) is an effective measure for painful metastases or impending pathological fractures of the spine with cement leakages being the most frequent complication. Posterior extrusion of cement into the spinal canal may result in neurological symptoms and deficits. PURPOSE: To compare the occurrence of intraspinal canal cement leakage between vertebrae with posterior wall disruption and vertebrae without posterior wall disruption...
February 9, 2023: Acta Radiologica
Lars Weber, Markus Hansson, Mats Geijer
BACKGROUND: Whole-body skeletal radiography has traditionally been used in the management of multiple myeloma for defining treatment strategies. For several reasons, radiography has been replaced by computed tomography (CT) covering the same regions. PURPOSE: To evaluate the body mass index (BMI) adjusted effective radiation dose from two different methods of whole-body radiologic imaging for multiple myeloma assessment. MATERIAL AND METHODS: The current investigation analyses the dose to patients resulting from the two methods, conventional radiography supplemented with tomosynthesis (203 examinations) and CT (264 examinations)...
February 9, 2023: Acta Radiologica
Min Xia, Fen Wu, Yawen Yang, Wenye Lu, Mengxing Song, Zhanlong Ma
BACKGROUND: Endothelial TGF-β1 signaling is a primary driver of atherosclerosis-associated vascular inflammation. Targeted imaging and inhibition of the expression of TGF-β1 may reduce the atherosclerotic vessel wall inflammation and stop the progression of atherosclerotic plaque. PURPOSE: To investigate the possibility of the anti-TGF-β1-ultrasmall superparamagnetic iron oxide (USPIO) specific probe as an imaging marker for the expression of TGF-β1 in ApoE-/- mice atherosclerosis detected with 7...
February 9, 2023: Acta Radiologica
Jahfer Hasoon, Oday Al-Dadah
BACKGROUND: Certain anatomical characteristics of the knee have potential relationships with the risk of anterior cruciate ligament (ACL) rupture. There remains a need for stronger evidence using arthroscopy as well as radiological imaging to accurately clarify these relationships. PURPOSE: To compare the anatomic geometry of the knee joint between patients with and without ACL ruptures. MATERIAL AND METHODS: Case-controlled study of patients with arthroscopically confirmed ACL ruptures (ACL group) compared to patients with arthroscopically confirmed normal ACLs (control group)...
February 8, 2023: Acta Radiologica
Ulf Nyman, Torkel Brismar, Jeanette Carlqvist, Mikael Hellström, Maria Lindblom, Mats Lidén, Per Liss, Gunnar Sterner, Franciska Wikner, Peter Leander
The Swedish Society of Uroradiology has revised their computed tomography (CT) guidelines regarding iodine contrast media-induced acute kidney injury (CI-AKI). They are more cautious compared to the European Society of Urogenital Radiology and the American College of Radiology since the actual risk of CI-AKI remains uncertain in patients with moderate to severe kidney damage due to a lack of prospective controlled studies and mainly based on retrospective propensity score-matched studies with low-grade evidence...
February 7, 2023: Acta Radiologica
Hyo Jeong Lee, Jin Sil Kim, Yeung-Chul Mun, Jeong Kyong Lee
BACKGROUND: Patients with underlying hematologic malignancy have a higher risk of developing systemic amyloidosis, which worsens their prognosis. Histopathologic detection of amyloid deposits in tissue biopsy specimens is the only diagnostic method for amyloidosis. PURPOSE: To compare the efficacy of ultrasound-guided percutaneous core needle biopsy (USPCB) of abdominal subcutaneous fat with that of bone marrow biopsy (BMB) for diagnosing amyloidosis. MATERIAL AND METHODS: A total of 90 consecutive patients with underlying hematologic disorders who underwent both USPCB of abdominal subcutaneous fat and BMB for suspicion of amyloid deposition during a 10-year period were included in this retrospective study...
February 6, 2023: Acta Radiologica
Min Chen, Keyan Yu, Xuehan Hu, Lennart Jans, Yulong Qi, Xin Liu, Guanxun Cheng
BACKGROUND: Bone marrow edema (BME) and erosion of the sacroiliac joint are both key lesions for diagnosing axial spondyloarthritis (axSpA) on magnetic resonance imaging (MRI). PURPOSE: To qualitatively and quantitatively compare intermediate-weighted MRI with fat suppression (IW-FS) with T2-weighted short tau inversion recovery (T2-STIR) in assessment of sacroiliac BME and erosion in axSpA. MATERIAL AND METHODS: Patients aged 18-60 years with axSpA were prospectively enrolled...
February 6, 2023: Acta Radiologica
Joelle A Feghali, Roberta A Russo, Adel Mamou, Axel Lorentz, Alfredo Cantarinha, Marie-France Bellin, Olivier Meyrignac
BACKGROUND: Low-dose thoracic protocols were developed massively during the COVID-19 outbreak. PURPOSE: To study the impact on image quality (IQ) and the diagnosis reliability of COVID-19 low-dose chest computed tomography (CT) protocols. MATERIAL AND METHODS: COVID-19 low-dose protocols were implemented on third- and second-generation CT scanners considering two body mass index (BMI) subgroups (<25 kg/m2 and >25 kg/m2 ). Contrast-to-noise ratios (CNR) were compared with a Catphan phantom...
February 6, 2023: Acta Radiologica
Letian Yuan, Xiangtao Lin, Peng Zhao, Hui Ma, Shuai Duan, Shanshan Sun
BACKGROUND: Diffusion kurtosis imaging (DKI) has been applied for gastric adenocarcinoma. Correlations between its parameters and Ki-67 are unclear. PURPOSE: To investigate the correlation between DKI and diffusion-weighted imaging (DWI) parameters with the Ki-67 index in gastric adenocarcinoma. MATERIAL AND METHODS: A total of 54 patients with gastric adenocarcinoma were enrolled in the study and underwent DWI and DKI at 3.0-T MRI before surgery...
February 5, 2023: Acta Radiologica
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