Contribution of 18F-FDG PET/CT in a case-mix of fever of unknown origin and inflammation of unknown origin: a meta-analysis.
Conclusion In patients with non-specific symptoms and signs, 18F-FDG PET/CT is very helpful for recognizing and excluding diseases, directing further diagnostic decisions, and avoiding unnecessary invasive examinations. We recommend that 18F-FDG PET/CT should be considered among the first-line diagnostic tools for patients with FUO and IUO. PMID: 30205705 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - September 11, 2018 Category: Radiology Authors: Kan Y, Wang W, Liu J, Yang J, Wang Z Tags: Acta Radiol Source Type: research

The effect of abdominal contrast-enhanced CT on DNA double-strand breaks in peripheral blood lymphocytes: an in vitro and in vivo study.
This study was performed in two parts: (i) an in vitro study: venous blood samples from 12 volunteers were divided into four groups. Samples in group A did not undergo radiation exposure, while groups B, C, and D received one CT scan with 1-3 times the radiation dose equivalent to abdominal CE-CT scan, respectively; and (ii) an in vivo study: blood was taken before CT and 5 min after CT in 30 patients. Lymphocytes were isolated and stained by immunofluorescence of γ-H2AX protein. DSB levels were compared by variance analysis or paired t-test. The relationship between radiation dose and γ-H2AX focus increase was...
Source: Acta Radiologica - September 10, 2018 Category: Radiology Authors: Tao SM, Zhou F, Schoepf UJ, Johnson AA, Lin ZX, Zhou CS, Lu GM, Zhang LJ Tags: Acta Radiol Source Type: research

Feasibility study using iodine quantification on dual-energy CT enterography to distinguish normal small bowel from active inflammatory Crohn's disease.
Abstract Background Assessment of Crohn's disease (CD) activity is important to identify patients with active inflammation for therapy management. Quantitative analysis can provide objective measurement of disease presence. Purpose To evaluate the feasibility of quantitative analysis of contrast-enhanced dual-energy computed tomography (DECT) data in detection of small bowel inflammation in patients with CD with an emphasis on iodine quantification. Material and Methods DECT enterography was prospectively performed in 20 patients with active CD and in 20 healthy individuals, as the control group. Iodine overlay im...
Source: Acta Radiologica - September 5, 2018 Category: Radiology Authors: De Kock I, Delrue L, Lecluyse C, Hindryckx P, De Vos M, Villeirs G Tags: Acta Radiol Source Type: research

Standardization of hippocampus volumetry using automated brain structure volumetry tool for an initial Alzheimer's disease imaging biomarker.
Conclusion AccuBrain™ provides accurate automated hippocampus segmentation in accordance with the EADC-ADNI standard, with great potential value in assisting clinical diagnosis of AD. PMID: 30185071 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - September 5, 2018 Category: Radiology Authors: Abrigo J, Shi L, Luo Y, Chen Q, Chu WCW, Mok VCT, Alzheimer’s Disease Neuroimaging Initiative Tags: Acta Radiol Source Type: research

Iterative scatter correction for grid-less skeletal radiography allows improved image quality equal to an antiscatter grid in adjunct with dose reduction: a visual grading study of 20 body donors.
Conclusion ISC for plain skeletal radiography has the ability to replace the antiscatter grid without image quality impairment, to improve image quality in grid-less imaging, and to reduce patient radiation dose by 50% without substantial loss in image quality. PMID: 30149748 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 27, 2018 Category: Radiology Authors: Lisson CG, Lisson CS, Kleiner S, Regier M, Beer M, Schmidt SA Tags: Acta Radiol Source Type: research

Diagnostic significance of magnetic resonance imaging in patients with cervical cancer after brachytherapy: a meta-analysis.
Conclusion MRI-directed BCT is commonly used for cervical cancer patients. Based on our investigation of four independent studies, MRI showed better prediction of positive results than negative results in patients with cervical cancer after BCT. However, more data on the greater numbers of patients are needed to establish the accuracy of MRI detection of cervical cancer after BCT. PMID: 30149749 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 27, 2018 Category: Radiology Authors: Zhang J, Tian W, Bu X, Wang X, Tian F, Wu L Tags: Acta Radiol Source Type: research

Is MRI an adequate replacement for CT scans in the three-dimensional assessment of acetabular morphology?
Conclusion Modern MRI scans are equally applicable to assess the bony pelvis as CT scans. In addition, MRI would enable the examination of soft tissues such as chondrolabral structures and muscle in the same examination. Since hip-preserving surgery is mostly conducted in younger patients, the reduction of radiation exposure is a benefit. PMID: 30149750 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 27, 2018 Category: Radiology Authors: Goronzy J, Blum S, Hartmann A, Plodeck V, Franken L, Günther KP, Thielemann F Tags: Acta Radiol Source Type: research

Percutaneous cryoablation for renal cell carcinoma using ultrasound-guided targeting and computed tomography-guided ice-ball monitoring: radiation dose and short-term outcomes.
Conclusion PCA using US-guided targeting and CT-guided ice-ball monitoring may allow acceptable local tumor control for RCC, as a radiation-reducing strategy. PMID: 30149751 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 27, 2018 Category: Radiology Authors: Kim DK, Won JY, Park SY Tags: Acta Radiol Source Type: research

Normal development of the fetal spinal canal and spinal cord at T12 on 3.0-T MRI.
Conclusion Postmortem MRI is a reliable method for understanding the growth dynamics of the spinal canal and spinal cord at T12. Findings from this study would benefit the prenatal diagnosis of congenital malformations by MRI. PMID: 30142995 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 24, 2018 Category: Radiology Authors: Miao M, Lin X, Zhang Z, Zhao H Tags: Acta Radiol Source Type: research

Time course of diffusion tensor imaging metrics in the chronic spinal cord compression rat model.
This study was aimed to investigate DTI changes in the different stages of compressive spinal cord induced by water-absorbing material implantation. Material and Methods The spinal cord compression was administered over the fourth cervical vertebral level in rat. Rat models were divided into five subgroups according to compression stages: sham group, group A: three-day compression rat models; group B: 12-day compression rat models; group C: 20-day compression rat models; group D: 60-day compression rat models. DTI including fractional anisotropy (FA) and apparent diffusion coefficient (ADC) in the compressive spinal cord w...
Source: Acta Radiologica - August 24, 2018 Category: Radiology Authors: Zheng W, Xu F, Chen H, Wang N, Xiao W, Liang Y, Wen S Tags: Acta Radiol Source Type: research

Single- vs. double-dose gadolinium contrast in delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) in knee osteoarthritis: is dose reduction possible on 3-T MRI?
Abstract Background Reduction in gadolinium (Gd) contrast agents is wanted due to the uncertainty of the potential side effects. Purpose To investigate whether it is possible to reduce the contrast dose from conventional double dose to single dose when increasing the field strength from 1.5-T to 3-T for separating early cartilage degeneration from healthy cartilage, assessed by delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC). Material and Methods Nine patients with knee osteoarthritis (OA), Kellgren-Lawrence grade (KLG) 1-4, were recruited from an ongoing weight loss cohort study. dGE...
Source: Acta Radiologica - August 24, 2018 Category: Radiology Authors: Hangaard S, Gade JS, Hansen P, Damm Nybing J, Gudbergsen H, Bliddal H, Boesen M Tags: Acta Radiol Source Type: research

Whole spine localizers of magnetic resonance imaging detect unexpected vertebral fractures.
Conclusion WS-locs from MR examinations of the lumbar spine provide a good diagnostic tool for the detection and evaluation of unsuspected vertebral fractures. WS-locs show strong inter-reader agreement for fracture detection in the thoracic and lumbar spine. PMID: 30142998 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 24, 2018 Category: Radiology Authors: Kaniewska M, de Beus JM, Ahlhelm F, Mameghani A, Eid K, Kubik-Huch RA, Anderson SE Tags: Acta Radiol Source Type: research

Non-contrast liver MRI as an alternative to gadoxetic acid-enhanced MRI for liver metastasis from colorectal cancer.
Conclusion Non-contrast liver MRI may serve as an alternative to gadoxetic acid-enhanced MRI for detecting and characterizing liver metastasis from CRC, at least in patients with relatively high risk of liver metastasis who underwent MDCT. Non-contrast liver MRI could be beneficial especially for patients with lesions that are already documented as benign but require additional follow-up MRIs. PMID: 30130970 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 21, 2018 Category: Radiology Authors: Hwang JA, Kim YK, Min JH, Song KD, Sohn I, Ahn HS Tags: Acta Radiol Source Type: research

Maximum lesions area and orthogonal values accessed from DWI images would be alternative imaging markers for predicting the outcome of acute ischemia in the middle cerebral artery territory.
Abstract Background Evaluating the acute ischemic volume on diffusion-weighted imaging (DWI) in the middle cerebral artery (MCA) territory would predict outcome. Purpose To investigate the correlations between maximum area with restricted diffusion (MaxA), the orthogonal diameters (OD) as well as lesion volume on DWI, and to explore the role of MaxA and OD on predicting unfavorable outcome after an acute MCA ischemic stroke. Material and Methods Sixty consecutive adult patients, including modified Rankin Scale score (mRS) ≤2 (n = 31) and mRS > 2 (n = 29) groups, were...
Source: Acta Radiologica - August 21, 2018 Category: Radiology Authors: Yuan T, Ren G, Quan G, Liu Y Tags: Acta Radiol Source Type: research

Vertebral bone marrow fat content in normal adults with varying bone densities at 3T magnetic resonance imaging.
Abstract Background Sex-related differences of vertebral bone marrow fat in relation to varying bone densities have not yet been evaluated although some studies have reported an inverse association of bone marrow fat and bone mineral density (BMD). Purpose To evaluate the relationship between bone marrow fat and BMD and to demonstrate the sex-related differences of the vertebral bone marrow fat in normal adults with varying bone densities. Material and Methods A total of 123 normal adult volunteers were enrolled in this study. 1H-MRS of the lumbar spine was performed. The fat fraction (FF) values of vertebral bone...
Source: Acta Radiologica - August 21, 2018 Category: Radiology Authors: He J, Fang H, Li X Tags: Acta Radiol Source Type: research

Perfusion-CT analysis for assessment of hepatocellular carcinoma lesions: diagnostic value of different perfusion maps.
Conclusion Among available CTLP-derived perfusion parameters, MSI was found to provide the highest diagnostic accuracy in discriminating HCCs from non-tumorous parenchyma. Perfusion parameters for non-tumorous livers and HCCs were not found to significantly differ between cirrhotic and non-cirrhotic patients. PMID: 30114926 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 16, 2018 Category: Radiology Authors: Hatzidakis A, Perisinakis K, Kalarakis G, Papadakis A, Savva E, Ippolito D, Karantanas A Tags: Acta Radiol Source Type: research

DCE-MR imaging of orbital lesions: diagnostic performance of the tumor flow residence time τ calculated by a multi-compartmental pharmacokinetic tumor model based on individual factors.
DCE-MR imaging of orbital lesions: diagnostic performance of the tumor flow residence time τ calculated by a multi-compartmental pharmacokinetic tumor model based on individual factors. Acta Radiol. 2018 Aug 16;:284185118795324 Authors: Erb-Eigner K, Asbach P, Ro SR, Haas M, Bertelmann E, Pietsch H, Schwenke C, Taupitz M, Denecke T, Hamm B, Lawaczeck R Abstract Background Differentiating benign from malignant orbital lesions by imaging and clinical presentation can be challenging. Purpose To differentiate benign from malignant orbital masses using dynamic contrast-enhanced magnetic resonance imagi...
Source: Acta Radiologica - August 16, 2018 Category: Radiology Authors: Erb-Eigner K, Asbach P, Ro SR, Haas M, Bertelmann E, Pietsch H, Schwenke C, Taupitz M, Denecke T, Hamm B, Lawaczeck R Tags: Acta Radiol Source Type: research

Perfusion-sensitive parameters of intravoxel incoherent motion MRI in rectal cancer: evaluation of reproducibility and correlation with dynamic contrast-enhanced MRI.
Conclusion Perfusion-sensitive parameters derived from IVIM-MRI correlated fairly to moderately with DCE-MRI in rectal cancer patients and showed moderate measurement reproducibility. IVIM-MRI supplements routine high-resolution MRI without contrast enhancement to provide information of tumor microcirculation. PMID: 30114928 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 16, 2018 Category: Radiology Authors: Yang X, Xiao X, Lu B, Chen Y, Wen Z, Yu S Tags: Acta Radiol Source Type: research

Craniofacial venous malformations treated by percutaneous sclerotherapy using polidocanol: a single-center experience.
Abstract Background Percutaneous therapy with various sclerosants is an established treatment of venous malformations in general. We investigated the safety and effectiveness of polidocanol in the craniofacial region. Purpose To present and evaluate our subjective and objective mid- and long-term results of patients with craniofacial venous malformations (CFVM) after percutaneous sclerotherapy using polidocanol. Material and Methods Twenty patients with CFVM treated by percutaneous sclerotherapy were followed up and asked to fill in a questionnaire comparing levels of the following CFVM-related symptoms before and...
Source: Acta Radiologica - August 15, 2018 Category: Radiology Authors: Grieb D, Meila D, Greling B, Jacobs C, Hechtner M, Schlunz-Hendann M, Brassel F Tags: Acta Radiol Source Type: research

The relationship between rotator cuff tear and four acromion types: cross-sectional study based on shoulder magnetic resonance imaging in 227 patients.
Conclusion Our study revealed that the age at which degeneration could occur also was associated with multiple RCTs and is considered to be the most important factor in RCT, not anatomical structures such as acromion type. PMID: 30111192 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 15, 2018 Category: Radiology Authors: Kim JM, Kim YW, Kim HS, Lee SC, Chun YM, Joo SH, Lim HS Tags: Acta Radiol Source Type: research

18F FDG-PET/CT evaluation of histological response after neoadjuvant treatment in patients with cancer of the esophagus or gastroesophageal junction.
Conclusion Our results are similar to those of previous studies and show that changes in the rate of SUR can be used reliably to differentiate histological responders from non-responders after neoadjuvant treatment with either chemoradiotherapy or chemotherapy. Limitations of current PET technology are likely to restrict the possibility of accurately ruling out limited residual disease. PMID: 30111193 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 15, 2018 Category: Radiology Authors: Gabrielson S, Sanchez-Crespo A, Klevebro F, Axelsson R, Albert Tsai J, Johansson O, Nilsson M Tags: Acta Radiol Source Type: research

The 100 top-cited articles focused on magnetic resonance: a bibliometric analysis.
Conclusion Our study presents a detailed list and analysis of the 100 top-cited articles on MR, which provides an insight into historical development in this field. PMID: 30111194 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 15, 2018 Category: Radiology Authors: Yoon SJ, Yoon DY, Ja Lim K, Moon JY, Hong SJ, Baek S, Yun EJ Tags: Acta Radiol Source Type: research

Outcomes of percutaneous transluminal biopsy of biliary lesions using a dedicated forceps system.
Conclusion Percutaneous transluminal biopsy of biliary strictures during PTBD using the specific forceps system was proven safe and resulted in high technical success and diagnostic accuracy rates. PMID: 30111195 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 15, 2018 Category: Radiology Authors: Inchingolo R, Spiliopoulos S, Nestola M, Nardella M Tags: Acta Radiol Source Type: research

Third generation dual-energy CT with 80/150  Sn kV for head and neck tumor imaging.
Third generation dual-energy CT with 80/150 Sn kV for head and neck tumor imaging. Acta Radiol. 2018 Aug 08;:284185118788896 Authors: Suntharalingam S, Stenzel E, Wetter A, Guberina N, Umutlu L, Schlosser T, Nassenstein K Abstract Background Dual-energy CT (DECT) provides additional image datasets which enable improved tumor delineation or reduction of beam hardening artifacts in patients with head and neck squamous cell carcinoma (SCC). Purpose To assess radiation dose and image quality of third-generation DECT of the head and neck in comparison to single-energy CT (SECT). Material and ...
Source: Acta Radiologica - August 8, 2018 Category: Radiology Authors: Suntharalingam S, Stenzel E, Wetter A, Guberina N, Umutlu L, Schlosser T, Nassenstein K Tags: Acta Radiol Source Type: research

Non-traumatic ligamentum teres tears: association with MRI morphometry of the hip.
Conclusion There is an association between LT tears and acetabular bony morphology; an insufficient acetabular coverage is associated with complete tear of the LT. As the insufficient acetabular coverage may predispose to ligamentum teres tear, the ligamentum teres should be thoroughly evaluated in those with insufficient acetabular coverage, as a potential cause of hip pain. PMID: 30086650 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 7, 2018 Category: Radiology Authors: Park J, Kang Y, Ahn JM, Lee E, Lee JW, Kang HS Tags: Acta Radiol Source Type: research

Differentiation of intrapancreatic accessory spleen from small hypervascular neuroendocrine tumor of the pancreas: textural analysis on contrast-enhanced computed tomography.
Abstract Background Intrapancreatic accessory spleens (IPASs) are usually misdiagnosed as pancreatic neuroendocrine tumors (PNETs). Texture analysis is valuable in tumor detection, diagnosis, and staging. Purpose To identify the potential of texture features in differentiating IPASs from small hypervascular PNETs. Material and Methods Twenty-one patients with PNETs and 13 individuals with IPASs who underwent pretreatment dynamic contrast-enhanced computed tomography (CT) were retrospectively analyzed. The routine imaging features-such as location, size, margin, cystic or solid appearance, enhancement degree and pa...
Source: Acta Radiologica - August 7, 2018 Category: Radiology Authors: Lin X, Xu L, Wu A, Guo C, Chen X, Wang Z Tags: Acta Radiol Source Type: research

Association between aortic valvular calcification and characteristics of the aortic valve in patients with bicuspid aortic valve stenosis.
This study included 161 BAV patients with AS regardless of aortic regurgitation who underwent transthoracic echocardiography and CCT. BAVs were classified according to orientation of cusps and presence of raphe. Associations of AVCS with characteristics of BAV morphology and functional variables were determined by linear regression analysis. Area under the receiver operating characteristic curve (AUC) was used to determine the cut-off AVCS greater than which the diagnosis of severe AS was optimized. Results AVCS was significantly different according to sex ( P 
Source: Acta Radiologica - August 6, 2018 Category: Radiology Authors: Choi BH, Ko SM, Shin JK, Chee HK, Kim JS, Kim J Tags: Acta Radiol Source Type: research

Regional differences of fat depot attenuation using non-contrast, contrast-enhanced, and delayed-enhanced cardiac CT.
Abstract Background Regional fat density assessed by computed tomography (CT) has been suggested as a marker of perivascular adipose tissue inflammation. Dual energy CT (DECT) allows improved tissue characterization compared to conventional CT. Purpose To explore whether DECT might aid regional fat density discrimination. Material and Methods We included patients who had completed a non-enhanced cardiac CT scan, CT coronary angiography (CTCA), and a delayed enhancement CT. Attenuation levels (Hounsfield units [HU]) were assessed at the epicardial, paracardial, visceral, and subcutaneous fat. The number of coronary...
Source: Acta Radiologica - July 31, 2018 Category: Radiology Authors: Rodriguez-Granillo GA, Capunay C, Deviggiano A, De Zan M, Carrascosa P Tags: Acta Radiol Source Type: research

Imaging findings of radiologically misdiagnosed nodular fasciitis.
Conclusion Nodular fasciitis in young adults and children is usually superficial, rapid growing, well-defined, and homogeneous, frequently with a "fascial tail" sign. Radiologically, it can resemble a benign cyst and might be easily misdiagnosed. Therefore, nodular fasciitis should be remembered in the differential diagnosis for superficial soft tissue tumor found in young adult and children. PMID: 30060672 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 31, 2018 Category: Radiology Authors: Hu PA, Zhou ZR Tags: Acta Radiol Source Type: research

Prediction of postoperative lung function in lung cancer patients using perfusion scintigraphy.
Conclusion Predictions with each processing method of lung perfusion scintigraphy showed nearly similar results to the actual postoperative lung function. The posterior oblique method of lung perfusion scintigraphy showed a very small difference to such an extent as to be equal to the observed FEV1, implying that this method may be applied for predicting postoperative lung function in lung cancer patients. PMID: 30056737 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 30, 2018 Category: Radiology Authors: Yoo ID, Im JJ, Chung YA, Choi EK, Oh JK, Lee SH Tags: Acta Radiol Source Type: research

Growth rate of serous pancreatic neoplasms in  vivo: a retrospective, observational study.
Conclusions In the absence of diagnostic intervention, the in vivo growth rate of SPNs was 1.9 mm/year (95% CI = 1.6-2.2). EUS-guided FNA or CNB may affect the growth rate of SPNs. PMID: 30056739 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 28, 2018 Category: Radiology Authors: Park C, Kim HJ, Kim SY, Lee SS, Byun JH, Kim SC, Kim MH Tags: Acta Radiol Source Type: research

Accuracy of tumor size measurement: comparison of B-mode ultrasound, strain elastography, and 2D and 3D shear wave elastography with histopathological lesion size.
FK Abstract Background Predicting the exact extent of a breast tumor is of great importance for oncologic treatment strategies. Different types of elastography can be used as new tools for measuring lesion size. Purpose To provide evidence regarding the accuracy of tumor size measurement of strain elastography (SE), two-dimensional (2D) and three-dimensional (3D) shear wave elastography (SWE), and conventional B-image ultrasound. Material and Methods In this prospective study, the diameter of 105 malignant breast lesions was measured by SE, 2D and 3D SWE, and B-mode ultrasound. The histopathological lesion size w...
Source: Acta Radiologica - July 25, 2018 Category: Radiology Authors: Farrokh A, Maass N, Treu L, Heilmann T, Schäfer FK Tags: Acta Radiol Source Type: research

Radiological prizes awarded in 2017.
PMID: 29787311 [PubMed - in process] (Source: Acta Radiologica)
Source: Acta Radiologica - May 26, 2018 Category: Radiology Authors: Skjennald A Tags: Acta Radiol Source Type: research

Complications in Vascular Interventional Therapy: Case-Based Solutions Mueller Huelsbeck S and Jahnke T (eds), Complications in Vascular Interventional Therapy: Case-Based Solutions , Thieme: Stuttgart, Germany, 2016, 269 pp.: 978-3-13-175831-6, £125 (hbk).
Complications in Vascular Interventional Therapy: Case-Based Solutions Mueller Huelsbeck S and Jahnke T (eds), Complications in Vascular Interventional Therapy: Case-Based Solutions , Thieme: Stuttgart, Germany, 2016, 269 pp.: 978-3-13-175831-6, £125 (hbk). Acta Radiol. 2018 Jun;59(6):NP1 Authors: Lonn L PMID: 29787312 [PubMed - in process] (Source: Acta Radiologica)
Source: Acta Radiologica - May 26, 2018 Category: Radiology Authors: Lonn L Tags: Acta Radiol Source Type: research

Radiographic analysis of the correlation between ossification of the nuchal ligament and sagittal alignment and segmental stability of the cervical spine in patients with cervical spondylotic myelopathy.
Conclusion Patients with ONL are more likely to have abnormal sagittal alignment and instability of the cervical spine. Thus, increased awareness and appreciation of this often-overlooked radiographic finding is warranted during diagnosis and treatment of instability-related cervical pathologies and injuries. PMID: 29788751 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Ying J, Teng H, Qian Y, Hu Y, Wen T, Ruan D, Zhu M Tags: Acta Radiol Source Type: research

Lung cancer screening with MRI: characterization of nodules with different non-enhanced MRI sequences.
Conclusion Malignant as well as calcified and subsolid nodules seem to have distinctive characteristics on different MRI sequences. T2-imaging was most suitable for the detection of nodules ≥ 6 mm. PMID: 29792040 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Meier-Schroers M, Homsi R, Schild HH, Thomas D Tags: Acta Radiol Source Type: research

Increased diagnostic confidence in the diagnosis of pituitary micro-lesions with the addition of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions sequences.
Abstract Background Conventional magnetic resonance imaging (MRI) is adversely affected by thick slices, small intersection gaps, and the partial volume effect, leading to the missed diagnosis or misdiagnosis of pituitary micro-lesions. Purpose To evaluate the diagnostic yield of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-T2 SPACE) sequences compared with a standard MRI protocol for the diagnosis of pituitary micro-lesions. Material and Methods The MRI findings of 664 patients with clinically suspected pituitary lesions were retrospectively ...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Tang Y, Wu Y, Zhang H, Wang J, Yao Z Tags: Acta Radiol Source Type: research

Imaging predictors of outcome in acute spontaneous subarachnoid hemorrhage: a review of the literature.
e;o P Abstract Spontaneous subarachnoid hemorrhage (SAH) accounts for about 5% of strokes, but has a very high morbidity and mortality. Many survivors are left with important cognitive impairment and are severely incapacitated. Prediction of complications such as vasospasm and delayed cerebral ischemia, and of clinical outcome after SAH, is challenging. Imaging studies are essential in the initial evaluation of SAH patients and are increasingly relevant in assessing for complications and prognosis. In this article, we reviewed the role of imaging studies in evaluating early brain injury and predicting complication...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Fragata I, Canhão P Tags: Acta Radiol Source Type: research

A new method for visualizing pulmonary artery microvasculature using synchrotron radiation pulmonary microangiography: the measurement of pulmonary arterial blood flow velocity in the high pulmonary blood flow rat model.
Abstract Background Increased pulmonary blood flow (PBF) and shear stress may provoke irreversible vascular remodeling, yet invasive visualization of the microvasculature complicates monitoring. A non-invasive imaging methodology would therefore safely provide mechanistic insights into the progression of high PBF-induced vascular remodeling. Purpose To establish a novel microvasculature visualization method using synchrotron radiation pulmonary microangiography (SRPA) that can also calculate PBF velocity in vivo. Material and Methods A high PBF rat model was established by making a fistula between the abdominal ao...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Tokunaga C, Matsushita S, Sakamoto H, Hyodo K, Kubota M, Tanioka K, Hiramatsu Y Tags: Acta Radiol Source Type: research

Ultrasonographic optic nerve sheath diameter to detect increased intracranial pressure in adults: a meta-analysis.
Conclusion US ONSD > 5.0 mm can be used to rapidly detect IICP in adults in emergency departments and intensive care units. Further meta-analysis based on individual patient-level databases is needed to confirm these results. PMID: 29768927 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Kim SE, Hong EP, Kim HC, Lee SU, Jeon JP Tags: Acta Radiol Source Type: research

Automated daily quality control analysis for mammography in a multi-unit imaging center.
Conclusion Automated image quality analysis enables monitoring the performance of digital mammography systems in an efficient, centralized manner. PMID: 29768928 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Sundell VM, Mäkelä T, Meaney A, Kaasalainen T, Savolainen S Tags: Acta Radiol Source Type: research

Diagnostic accuracy of dual-source and 320-row computed tomography angiography in detecting coronary in-stent restenosis: a systematic review and meta-analysis.
Abstract Background Dual-source and 320-row computed tomography angiography (CTA) are increasingly used in diagnosing coronary in-stent restenosis (CISR). Purpose We sought to perform this meta-analysis to evaluate the diagnostic accuracy of dual-source computed tomography angiography (DSCTA) and 320-row CTA in detecting CISR when compared to invasive coronary angiography. Material and Methods Five scientific databases (PubMed, Embase, Scopus, The Cochrane Library, and Web of Science) were searched for research studies in which DSCTA and/or 320-row CTA were used as diagnostic tools for CISR, as recently as October...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Liu HF, Wang M, Xu YS, Shrestha MK, Lu XR, Lei JQ Tags: Acta Radiol Source Type: research

Patterns of malignant non-mass enhancement on 3-T breast MRI help predict invasiveness: using the BI-RADS lexicon fifth edition.
Abstract Background Non-mass enhancements (NME) with invasive components account for 10-42% of total malignant NMEs. The factors associated with invasiveness on magnetic resonance imaging (MRI) could be useful for clinical assessment and treatment. Purpose To evaluate the clinical significances of the distributions and internal enhancement patterns (IEP) of malignant NMEs on 3-T breast MRI. Material and Methods A total of 448 consecutive women with newly diagnosed breast cancer that had undergone preoperative MRI and surgery between February 2013 and March 2016 were identified. After exclusions, 72 malignant NMEs ...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Lee SM, Nam KJ, Choo KS, Kim JY, Jeong DW, Kim HY, Kim JY Tags: Acta Radiol Source Type: research

Temporal bone contrast-enhanced high-resolution CT evaluation of pulsatile tinnitus after sigmoid sinus wall reconstruction.
Abstract Background Sigmoid sinus wall reconstruction (SSWR) is a proven effective treatment for pulsatile tinnitus (PT) caused by sigmoid sinus wall dehiscence (SSWD) with or without sigmoid sinus diverticulum (SSD); however, comprehensive analysis of the postoperative imaging manifestations has not yet been reported. Purpose To analyze temporal bone computed tomography (CT) imaging features following SSWR in patients with PT. Material and Methods Following SSWR, temporal bone contrast-enhanced high-resolution CT (HRCT) images from 33 PT cases were retrospectively analyzed. Patients were divided into two groups b...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Ding H, Zhao P, Lv H, Liu X, Zeng R, Wang G, Gong S, Wang Z Tags: Acta Radiol Source Type: research

Change in microcalcifications on mammography after neoadjuvant chemotherapy in breast cancer patients: correlation with tumor response grade and comparison with lesion extent.
Abstract Background After neoadjuvant chemotherapy (NAC), persistent microcalcifications are often observed in spite of a decrease in the primary tumor size. Purpose To analyze the changes in microcalcifications after NAC and to evaluate the accuracy of residual microcalcifications in predicting the extent of residual cancer. Material and Methods Eighty patients who received NAC and underwent both mammography and magnetic resonance imaging (MRI) before and after the completion of NAC were included. The location of microcalcifications was classified into two types: inside the mass and outside the mass. Results The ...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Yim H, Ha T, Kang DK, Park SY, Jung Y, Kim TH Tags: Acta Radiol Source Type: research

Evaluation of anterior intermeniscal ligament in discoid lateral meniscus cases and presenting the accompanying meniscal pathologies with MRI.
Conclusion No statistically significant correlation was found between the type of DLM and type of AIML ( P = 0.855), between the type of DLM and meniscal pathology ( P = 0.791), or between the type of AIML and meniscal pathology ( P = 0.282). PMID: 29754495 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Koç A, Tokmak TT, Karabıyık Ö, Türk G Tags: Acta Radiol Source Type: research

Detection of loco-regional recurrence in malignant head and neck tumors: a comparison of CT, MRI, and FDG PET-CT.
Conclusion MRI + PET-CT offered the highest diagnostic performance in the detection of loco-regional recurrence of malignant head and neck tumor, compared with CT, MRI, PET-CT, and other combinations including CT. PMID: 29754496 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Kim ES, Yoon DY, Moon JY, Baek S, Han YM, Seo YL, Yun EJ Tags: Acta Radiol Source Type: research

Dependence of intravoxel incoherent motion diffusion MR threshold b-value selection for separating perfusion and diffusion compartments and liver fibrosis diagnostic performance.
Lu PX Abstract Background Intravoxel incoherent motion (IVIM) tissue parameters depend on the threshold b-value. Purpose To explore how threshold b-value impacts PF ( f), Dslow ( D), and Dfast ( D*) values and their performance for liver fibrosis detection. Material and Methods Fifteen healthy volunteers and 33 hepatitis B patients were included. With a 1.5-T magnetic resonance (MR) scanner and respiration gating, IVIM data were acquired with ten b-values of 10, 20, 40, 60, 80, 100, 150, 200, 400, and 800 s/mm2. Signal measurement was performed on the right liver. Segmented-unconstrained analysis was used t...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Wáng YXJ, Li YT, Chevallier O, Huang H, Leung JCS, Chen W, Lu PX Tags: Acta Radiol Source Type: research

Diagnostic value of MRI signs in differentiating Ewing sarcoma from osteomyelitis.
TC Abstract Background The value of magnetic resonance imaging (MRI) signs in differentiating Ewing sarcoma from osteomyelitis has not be thoroughly investigated. Purpose To investigate the value of various MRI signs in differentiating Ewing sarcoma from osteomyelitis. Material and Methods Forty-one patients who underwent MRI because of a bone lesion of unknown nature with a differential diagnosis that included both Ewing sarcoma and osteomyelitis were included. Two observers assessed several MRI signs, including the transition zone of the bone lesion, the presence of a soft-tissue mass, intramedullary and extram...
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Kasalak Ö, Overbosch J, Adams HJ, Dammann A, Dierckx RA, Jutte PC, Kwee TC Tags: Acta Radiol Source Type: research

Can unenhanced MRI of the breast replace contrast-enhanced MRI in assessing response to neoadjuvant chemotherapy?
Conclusion Ue-MRI can achieve similar results to CE-MRI for the assessment of tumor response to NAC. ADC values can differentiate responders from non-responders. PMID: 29742918 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 1, 2018 Category: Radiology Authors: Cavallo Marincola B, Telesca M, Zaccagna F, Riemer F, Anzidei M, Catalano C, Pediconi F Tags: Acta Radiol Source Type: research