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    8004 results match your criteria Acta Radiologica [Journal]

    1 OF 161

    Investigation of cerebrospinal fluid flow in the cerebral aqueduct using high-resolution phase contrast measurements at 7T MRI.
    Acta Radiol 2017 Jan 1:284185117740762. Epub 2017 Jan 1.
    2 Department of Diagnostic Radiology, Lund University, Skåne University Hospital, Lund, Sweden.
    Background The cerebral aqueduct is a central conduit for cerebrospinal fluid (CSF), and non-invasive quantification of CSF flow in the aqueduct may be an important tool for diagnosis and follow-up of treatment. Magnetic resonance (MR) methods at clinical field strengths are limited by low spatial resolution. Purpose To investigate the feasibility of high-resolution through-plane MR flow measurements (2D-PC) in the cerebral aqueduct at high field strength (7T). Read More

    Core needle biopsy of thyroid nodules: outcomes and safety from a large single-center single-operator study.
    Acta Radiol 2017 Jan 1:284185117741916. Epub 2017 Jan 1.
    Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, 65526 Asan Medical Center , Seoul, Republic of Korea.
    Background There currently remains a debate over the use of core needle biopsy (CNB) or fine needle aspiration (FNA) for diagnosis of thyroid nodules. The major drawbacks of previous CNB studies include heterogeneity of the study population, variable techniques, devices, and operator experience affecting the outcome of the procedure. Purpose To assess the diagnostic performance and safety of CNB of thyroid nodules performed by a single experienced operator in consecutive patients. Read More

    Optimization of T2-weighted imaging for shoulder magnetic resonance arthrography by synthetic magnetic resonance imaging.
    Acta Radiol 2017 Jan 1:284185117740761. Epub 2017 Jan 1.
    1 Department of Radiology, Research Institute of Radiological Science, YUHS-KRIBB Medical Convergence Research Institute, and Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
    Background Synthetic magnetic resonance imaging (MRI) allows reformatting of various synthetic images by adjustment of scanning parameters such as repetition time (TR) and echo time (TE). Optimized MR images can be reformatted from T1, T2, and proton density (PD) values to achieve maximum tissue contrast between joint fluid and adjacent soft tissue. Purpose To demonstrate the method for optimization of TR and TE by synthetic MRI and to validate the optimized images by comparison with conventional shoulder MR arthrography (MRA) images. Read More

    Preoperative quantitative dynamic contrast-enhanced MRI and diffusion-weighted imaging predict aggressive disease in endometrial cancer.
    Acta Radiol 2017 Jan 1:284185117740932. Epub 2017 Jan 1.
    1 Department of Radiology, Haukeland University Hospital, Bergen, Norway.
    Background Quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and diffusion-weighted imaging (DWI) may yield preoperative tumor biomarkers relevant for prognosis and therapy in cancer. Purpose To explore the value of preoperative DCE-MRI and DWI for the prediction of aggressive disease in endometrial cancer patients. Material and Methods Preoperative MRI (1. Read More

    Quality of life after endovascular sclerotherapy of low-flow venous malformations: the efficacy of polidocanol compared with ethanol.
    Acta Radiol 2017 Jan 1:284185117741774. Epub 2017 Jan 1.
    1 Department of Otorhinolaryngology, Kokkola Central Hospital, Kokkola, Finland.
    Background Limited information is available on mid-term results and quality of life (QOL) after endovascular sclerotherapy of venous malformations. Purpose To compare two agents-polidocanol and ethanol-with a focus on the influence on QOL after sclerotherapy. Material and Methods Forty-one consecutive patients with a venous malformation in the head and neck area or in the extremities were treated with polidocanol between 2008 and 2013. Read More

    Susceptibility of iodine concentration map of dual-energy contrast-enhanced digital mammography for quantitative and tumor enhancement assessment.
    Acta Radiol 2017 Jan 1:284185117740760. Epub 2017 Jan 1.
    1 Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
    Background Dual-energy (DE) contrast-enhanced digital mammography (DE-CEDM) provides additional information on tumor angiogenesis. Purpose To investigate the susceptibility of reconstructing color-coded iodine concentration maps on the basis of quantitative calibrations of the iodine concentration and contrast-to-noise ratio (CNR) in DE-CEDM applications. Material and Methods A custom-made phantom filled with iodine concentrations in the range of 0. Read More

    Effects of contrast-enhancement on diffusion weighted imaging and apparent diffusion coefficient measurements in 3-T magnetic resonance imaging of breast lesions.
    Acta Radiol 2017 Jan 1:284185117740759. Epub 2017 Jan 1.
    Department of Radiological, Oncological and Pathological Sciences, University of Rome "Sapienza," Rome, Italy.
    Background The effect of gadolinium-based contrast agents on diffusion-weighted imaging (DWI) measurements of breast lesions is still not clear. Purpose To investigate gadolinium effects on DWI and apparent diffusion coefficient (ADC) in breast lesions and normal parenchyma with 3 Tesla contrast-enhanced MRI. Material and Methods Pre- and post-contrast DWI (b = 0 and b = 1000 s/mm(2)) were acquired in 47 patients. Read More

    High-pitch dual-source paranasal sinus CT in agitated patients with maxillofacial trauma: analysis of image quality, motion artifacts, and dose aspects.
    Acta Radiol 2017 Jan 1:284185117740931. Epub 2017 Jan 1.
    1 Department of Diagnostic and Interventional Radiology, Clinic of the Goethe University Frankfurt, Frankfurt am Main, Germany.
    Background Image quality benefits from high-pitch scanning in agitated patients by reducing acquisition time. Purpose To compare image quality and exposure parameters in patients with maxillofacial trauma on second- and third-generation dual-source computed tomography (DSCT). Material and Methods Four groups were compared. Read More

    Can imaging kinetic parameters of dynamic contrast-enhanced magnetic resonance imaging be valuable in predicting clinicopathological prognostic factors of invasive breast cancer?
    Acta Radiol 2017 Jan 1:284185117740746. Epub 2017 Jan 1.
    1 Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
    Background Intrinsic molecular profiling of breast cancer provides clinically relevant information that helps tailor therapy directed to the specific tumor subtype. We hypothesized that dynamic contrast-enhanced MRI (DCE-MRI) derived quantitative kinetic parameters (CD-QKPs) may help predict molecular tumor profiles non-invasively. Purpose To determine the association between DCE-MRI (CD-QKPs) and breast cancer clinicopathological prognostic factors. Read More

    Differentiation between papillary renal cell carcinoma and fat-poor angiomyolipoma: a preliminary study assessing detection of intratumoral hemorrhage with chemical shift MRI and T2*-weighted gradient echo.
    Acta Radiol 2017 Jan 1:284185117723371. Epub 2017 Jan 1.
    1 Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea.
    Background Recent literature suggests that intratumoral hemorrhage detection may be helpful in differentiating papillary renal cell carcinoma (pRCC) from fat-poor angiomyolipoma (fpAML). Purpose To determine whether intratumoral hemorrhage detected using chemical shift magnetic resonance imaging (MRI) and T2*-weighted (T2*W) gradient echo (GRE) can be used to differentiate pRCC from fpAML. Material and Methods This retrospective study included 42 patients with pRCC (n = 28) and fpAML (n = 14) who underwent MRI followed by surgery. Read More

    Diagnostic performance of advanced modeled iterative reconstruction applied images for detecting urinary stones on submillisievert low-dose computed tomography.
    Acta Radiol 2017 Jan 1:284185117738548. Epub 2017 Jan 1.
    2 Department of CT research collaborations, SIEMENS Healthcare Ltd., Poongsan Building, Seoul, Republic of Korea.
    Background Repeated computed tomography (CT) scans may be an issue in young adults with urinary stones. Therefore, it is important to know how far the dose can be reduced while maintaining the diagnostic performance. Purpose To generate a hypothesis that it is feasible to decrease the radiation dose to a sub-millisievert (mSv) level with the addition of advanced modeled iterative reconstruction (ADMIRE) while maintaining the sensitivity to standard-dose CT (SDCT) for the detection of urinary stones. Read More

    Diffusion-weighted MRI combined with susceptibility-weighted MRI: added diagnostic value for four common lateral ventricular tumors.
    Acta Radiol 2017 Jan 1:284185117738562. Epub 2017 Jan 1.
    Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, PR China.
    Background Diffusion-weighted imaging (DWI) and susceptibility-weighted imaging (SWI) are reliable imaging modalities for brain tumors. However, the role of DWI and SWI in the diagnosis of common lateral ventricular tumors has not been systematically evaluated. Purpose To evaluate the diagnostic performance of DWI and SWI in common lateral ventricular tumors. Read More

    Safety and effectiveness of transarterial embolization for splenic artery hemorrhage in patients undergoing radical gastrectomy.
    Acta Radiol 2017 Jan 1:284185117738561. Epub 2017 Jan 1.
    1 Department of Radiology, 54678 Severance Hospital , Research Institute of Radiological Science, Yonsei University, College of Medicine, Seoul, Republic of Korea.
    Background Perigastric lymph nodes are dissected during gastrectomy, potentially resulting in life-threatening postoperative bleeding. Purpose To evaluate the safety and effectiveness of transarterial embolization (TAE) for bleeding from the splenic artery in patients who underwent gastrectomy. Material and Methods Between January 2004 and December 2016, 14,523 patients underwent gastrectomy at our institution, and ten patients (nine men; mean age = 64. Read More

    Decreased background parenchymal enhancement of the contralateral breast after two cycles of neoadjuvant chemotherapy is associated with tumor response in HER2-positive breast cancer.
    Acta Radiol 2017 Jan 1:284185117738560. Epub 2017 Jan 1.
    1 Department of Radiology, Fudan University Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, PR China.
    Background Several recent studies have focused on the association between background parenchymal enhancement (BPE) and tumor response to neoadjuvant chemotherapy (NAC), but early prediction of tumor response based on BPE has yet not been investigated. Purpose To retrospectively investigate whether changes in the BPE of the contralateral breast following NAC could help predict tumor response in early stage HER2-positive breast cancer. Material and Methods Data from 71 patients who were diagnosed with unilateral HER2 positive breast cancer and then underwent NAC with trastuzumab before surgery were analyzed retrospectively. Read More

    Postpartum hemorrhage from non-uterine arteries: clinical importance of their detection and the results of selective embolization.
    Acta Radiol 2017 Jan 1:284185117738547. Epub 2017 Jan 1.
    2 Department of Radiology, 65633 Seoul Metropolitan Government Seoul National University Boramae Medical Center , Seoul, Republic of Korea.
    Background Identification of the source of postpartum hemorrhage (PPH) is important for embolization because PPH frequently originates from non-uterine arteries. Purpose To evaluate the clinical importance of identifying the non-uterine arteries causing the PPH and the results of their selective embolization. Material and Methods This retrospective study enrolled 59 patients who underwent embolization for PPH from June 2009 to July 2016. Read More

    Contrast-enhanced spectral mammography in patients with MRI contraindications.
    Acta Radiol 2017 Jan 1:284185117735561. Epub 2017 Jan 1.
    1 Department of Diagnostic and Interventional Radiology, 9188 Eberhard-Karls-Universität Tübingen , Tübingen, Germany.
    Background Contrast-enhanced spectral mammography (CESM) is a novel breast imaging technique providing comparable diagnostic accuracy to breast magnetic resonance imaging (MRI). Purpose To show that CESM in patients with MRI contraindications is feasible, accurate, and useful as a problem-solving tool, and to highlight its limitations. Material and Methods A total of 118 patients with MRI contraindications were examined by CESM. Read More

    Performance of shear-wave elastography for breast masses using different region-of-interest (ROI) settings.
    Acta Radiol 2017 Jan 1:284185117735562. Epub 2017 Jan 1.
    1 Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
    Background Various size and shape of region of interest (ROI) can be applied for shear-wave elastography (SWE). Purpose To investigate the diagnostic performance of SWE according to ROI settings for breast masses. Material and Methods To measure elasticity for 142 lesions, ROIs were set as follows: circular ROIs 1 mm (ROI-1), 2 mm (ROI-2), and 3 mm (ROI-3) in diameter placed over the stiffest part of the mass; freehand ROIs drawn by tracing the border of mass (ROI-M) and the area of peritumoral increased stiffness (ROI-MR); and circular ROIs placed within the mass (ROI-C) and to encompass the area of peritumoral increased stiffness (ROI-CR). Read More

    Combined transarterial chemoembolization and radiofrequency ablation for small treatment-naïve hepatocellular carcinoma infeasible for ultrasound-guided radiofrequency ablation: long-term outcomes.
    Acta Radiol 2017 Jan 1:284185117735349. Epub 2017 Jan 1.
    1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
    Background Ultrasound (US)-guided radiofrequency ablation (RFA) for small hepatocellular carcinoma (HCC) is often infeasible due to unfavorable location and poor conspicuity. Those small HCCs can be treated with combined transarterial chemoembolization (TACE) and RFA. Purpose To evaluate long-term outcomes of combined TACE and RFA for small treatment-naïve HCC infeasible for US-guided RFA. Read More

    Rejection evaluation after renal transplantation using MR diffusion tensor imaging.
    Acta Radiol 2017 Jan 1:284185117733777. Epub 2017 Jan 1.
    6 Department of Radiology, Bahcesehir University, Istanbul, Turkey.
    Background Renal allograft dysfunction monitoring is mainly performed using the serum creatinine (SC) level, Doppler ultrasound (US), or renal biopsy. Recently proposed diffusion-based magnetic resonance imaging (MRI) methods have been explored as new, non-invasive tools for assessing renal function after transplantation. Purpose To investigate the value of fractional anisotropy (FA) measurements in the evaluation of acute rejection cases after renal transplant. Read More

    Computed tomography-guided preoperative localization of small lung nodules with indocyanine green.
    Acta Radiol 2017 Jan 1:284185117733507. Epub 2017 Jan 1.
    Osaka National Hospital, Osaka, Japan.
    Background Small, deep-seated lung nodules and sub-solid nodules are often difficult to locate without marking. Purpose To evaluate the success and complication rates associated with the use of indocyanine green (ICG) to localize pulmonary nodules before resection. Material and Methods This retrospective study was approved by our institutional review board. Read More

    Accuracy of pre-interventional computed tomography angiography post-processing software and extravascularly calibrated devices to determine vessel diameters: comparison with an intravascularly located calibrated catheter.
    Acta Radiol 2017 Jan 1:284185117734242. Epub 2017 Jan 1.
    1 Clinic for Radiology and Nuclear Medicine, 54360 University Hospital of Schleswig Holstein , Campus Lübeck, Lübeck, Germany.
    Background Accurate vessel sizing might affect treatment outcome of endovascular therapy. Purpose To compare accuracy of peripheral vessel diameter measurements using pre-interventional computed tomography angiography post processing software (CTA-PPS) and extravascularly located calibrated devices used during digital subtraction angiography (DSA) with an intravascular scaled catheter (SC). Material and Methods In 33 patients (28 men, mean age = 72 ± 11 years) a SC was used during DSA of the femoro-popliteal territory. Read More

    Transthoracic Coronary Flow Data at Rest Predict High-Risk Stress Tests.
    Acta Radiol 2017 Jan 1:284185117733143. Epub 2017 Jan 1.
    5 Second Department of Surgery, Center for Vascular Disease, St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
    Background Several recent studies have reported the opportunity to diagnose significant narrowing of the coronary arteries without stress testing using local flow acceleration. Purpose To define how often patients with increased coronary flow velocities at rest (≥ 0.70 m/s) have a positive exercise echocardiography test. Read More

    Longitudinal changes in the brain in mild cognitive impairment: a magnetic resonance imaging study using the visual rating method and tensor-based morphometry.
    Acta Radiol 2017 Jan 1:284185117734418. Epub 2017 Jan 1.
    1 Turku PET Centre, Turku University Hospital, Turku, Finland.
    Background Brain atrophy is associated with mild cognitive impairment (MCI), and by using volumetric and visual analyzing methods, it is possible to differentiate between individuals with progressive MCI (MCIp) and stable MCI (MCIs). Automated analysis methods detect degenerative changes in the brain earlier and more reliably than visual methods. Purpose To detect and evaluate structural brain changes between and within the MCIs, MCIp, and control groups during a two-year follow-up period. Read More

    Clinical outcome and subsequent sequelae of cement extravasation after percutaneous kyphoplasty and vertebroplasty: a comparative review.
    Acta Radiol 2017 Jan 1:284185117732599. Epub 2017 Jan 1.
    2 Department of Orthopedics Surgery, 70257 University of Toledo Medical Center , Toledo, OH, USA.
    Background Injection of cement during vertebroplasty and kyphoplasty can leak into surrounding structures and could be symptomatic. Purpose To identify the sites and incidence of cement extravasation after kyphoplasty and vertebroplasty, and to evaluate their impacts on clinical outcomes. Material and Methods A retrospective review of 316 patients treated with kyphoplasty and vertebroplasty; 411 cases were included (223 kyphoplasty and 188 vertebroplasty). Read More

    Peripherally inserted central catheters: dependency of radiation exposure from puncture site and level of training.
    Acta Radiol 2017 Jan 1:284185117730101. Epub 2017 Jan 1.
    1 Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Radiology, Berlin, Germany.
    Background Several interventional procedures show a dependency on fluoroscopy times (FT) and level of training. Furthermore, FT and dose area products (DAP) vary depending on access site and target vessel for chest port implantations, but not for other thoracic interventions such as percutaneous coronary interventions. Purpose To evaluate the influence of the combination of venous access site and level of training on FTs and DAPs during peripherally inserted central catheters (PICC) implantations in a large cohort of patients. Read More

    Measurements of renal shear wave velocities in chronic kidney disease patients.
    Acta Radiol 2017 Jan 1:284185117734417. Epub 2017 Jan 1.
    3 Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
    Background Chronic kidney disease (CKD) patients have advanced glomerulosclerosis and renal interstitial fibrosis. Shear wave elastography (SWE) is useful to diagnose liver fibrosis. However, there are few data available regarding evaluation of kidney function on the use of SWE. Read More

    Use of single-view digital breast tomosynthesis (DBT) and ultrasound vs. additional views and ultrasound for the assessment of screen-detected abnormalities: German multi-reader study.
    Acta Radiol 2017 Jan 1:284185117732600. Epub 2017 Jan 1.
    1 National Reference Centre Mammography Munich, Munich, Germany.
    Background Data on the value of digital breast tomosynthesis (DBT) for further assessment of screen-detected lesions are still limited. Purpose To compare screening mammography, single-view DBT and ultrasound-information (TS) vs. screening mammography, additional views and ultrasound-information (AV) for assessment of screen-detected abnormalities. Read More

    Evaluation of image quality and radiation dose of abdominal dual-energy CT.
    Acta Radiol 2017 Jan 1:284185117732806. Epub 2017 Jan 1.
    1 Department of Translational Medicine - Medical Radiology, Lund University, Lund, Sweden.
    Background Dual-energy computed tomography (DECT) has conceptually been known since the late 1970s and commercially available as dual-source CT (DSCT) systems since 2006; however, the technique has not yet seen widespread implementation in routine protocols. Part of the cause for this is likely due to misconceptions about radiation dose and/or image quality when using DECT. Purpose To compare image quality and radiation dose of single-energy CT (SECT) and DECT abdominal examinations obtained in clinical practice on a second generation DSCT. Read More

    Prognostic value of perfusion CT in hepatocellular carcinoma treatment with sorafenib: comparison with mRECIST in longitudinal follow-up.
    Acta Radiol 2017 Jan 1:284185117732805. Epub 2017 Jan 1.
    1 Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University, Tübingen, Germany.
    Background Targeted therapies are of increasing clinical importance and classic radiologic therapy response-criteria often fail to detect early therapeutic response or failure. For hepatocellular carcinoma (HCC), this is of major importance as therapeutic options are limited. Purpose To investigate the impact of sorafenib-treatment on intralesional perfusion using perfusion computed tomography (PCT) in HCC and to correlate the observed changes with mRECIST and the course of serum alpha-fetoprotein (AFP) for identification of their prognostic value. Read More

    Clinical value of the VTIQ technology in the differential diagnosis of superficially enlarged lymph nodes.
    Acta Radiol 2017 Jan 1:284185117732601. Epub 2017 Jan 1.
    Department of Ultrasound, Ningbo No. 2 Hospital, Ningbo, Zhejiang, PR China.
    Background Lymph node enlargement is a common clinical finding in clinical practice with different treatment strategies. Purpose To investigate the application of Virtual Touch Image Quantification (VTIQ) to diagnose benign and malignant superficial enlarged lymph nodes. Material and Methods Between December 2015 and August 2016, 116 superficial enlarged lymph nodes were examined by VTIQ. Read More

    In vivo MR spectroscopy predicts high tumor grade in endometrial cancer.
    Acta Radiol 2017 Jan 1:284185117733297. Epub 2017 Jan 1.
    1 Department of Radiology, Haukeland University Hospital, Bergen, Norway.
    Background In vivo magnetic resonance spectroscopy (MRS) enables non-invasive measurements of tumor metabolites. Choline-containing metabolites play a key role in tumor metabolism. Purpose To explore whether preoperative MRS-derived tumor choline levels are associated with clinical and histological features in endometrial carcinomas. Read More

    MRI findings and demographics of elastofibroma dorsi: assessment of diffusion-weighted imaging and contrast enhancement patterns.
    Acta Radiol 2017 Jan 1:284185117732099. Epub 2017 Jan 1.
    1 Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Okinawa, Japan.
    Background Elastofibroma dorsi is a rare pseudotumoral lesion. Thus, there is no report of magnetic resonance imaging (MRI) findings that investigates multiple patients particularly with respect to diffusion-weighted imaging (DWI) findings and contrast enhancement patterns. Purpose To describe the imaging findings of elastofibroma on MRI, particularly DWI findings and contrast enhancement patterns, and to further investigate patient demographics. Read More

    Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation.
    Acta Radiol 2017 Jan 1:284185117732100. Epub 2017 Jan 1.
    3 Department of Pathology, Faculty of Medicine, Health Sciences Center, Kuwait University, Safat, Kuwait.
    Background Soft-tissue chondroma (STC) is a rare benign soft tissue tumor that arises primarily in acral extra-skeletal locations. Occasionally, STCs may arise in more proximal non-acral locations, accompanied by non-classic features that label them as indeterminate lesions and pose diagnostic challenge for both radiologists and pathologists alike. Purpose To explicate the potential of diagnostic imaging in the identification and characterization of appendicular non-acral STCs with emphasis on their morphologic magnetic resonance imaging (MRI) enhancement. Read More

    Impact of region of interest (ROI) size on the diagnostic performance of shear wave elastography in differentiating solid breast lesions.
    Acta Radiol 2017 Jan 1:284185117732097. Epub 2017 Jan 1.
    3 Department of Radiology, Hallym Sacred Heart Hospital, Gyeonggi-do, Republic of Korea.
    Background Shear wave elastography (SWE) using a region of interest (ROI) can demonstrate the quantitative elasticity of breast lesions. Purpose To prospectively evaluate the impact of two different ROI sizes on the diagnostic performance of SWE for differentiating benign and malignant breast lesions. Material and Methods A total of 154 breast lesions were included. Read More

    Reduction of metal artifacts from unilateral hip arthroplasty on dual-energy CT with metal artifact reduction software.
    Acta Radiol 2017 Jan 1:284185117731475. Epub 2017 Jan 1.
    1 Department of Radiology, Cancer Hospital of China Medical University, LiaoNing Cancer Hospital, LiaoNing, PR China.
    Background The evaluation of hip arthroplasty is a challenge in computed tomography (CT). The virtual monochromatic spectral (VMS) images with metal artifact reduction software (MARs) in spectral CT can reduce the artifacts and improve the image quality. Purpose To evaluate the effects of VMS images and MARs for metal artifact reduction in patients with unilateral hip arthroplasty. Read More

    Apparent diffusion coefficient (ADC) does not correlate with different serological parameters in myositis and myopathy.
    Acta Radiol 2017 Jan 1:284185117731448. Epub 2017 Jan 1.
    2 Department of Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany.
    Background Magnetic resonance imaging (MRI) is widely used in several muscle disorders. Diffusion-weighted imaging (DWI) is an imaging modality, which can reflect microstructural tissue composition. The apparent diffusion coefficient (ADC) is used to quantify the random motion of water molecules in tissue. Read More

    Subchondral bone microarchitecture analysis in the proximal tibia at 7-T MRI.
    Acta Radiol 2017 Jan 1:284185117732098. Epub 2017 Jan 1.
    1 Center for Musculoskeletal Care, Department of Radiology, NYU School of Medicine, New York, NY, USA.
    Background Bone remodels in response to mechanical loads and osteoporosis results from impaired ability of bone to remodel. Bone microarchitecture analysis provides information on bone quality beyond bone mineral density (BMD). Purpose To compare subchondral bone microarchitecture parameters in the medial and lateral tibia plateau in individuals with and without fragility fractures. Read More

    MRI assessment of pituitary iron accumulation by using pituitary-R2 in β-thalassemia patients.
    Acta Radiol 2017 Jan 1:284185117730099. Epub 2017 Jan 1.
    2 Department of Radiology, 60521 Ege University Faculty of Medicine , Izmir, Turkey.
    Background Patients with thalassemia major (TM) require repeated blood transfusions, which leads to accumulation of iron in a wide variety of tissues. Accumulation of iron in the pituitary gland can lead to irreversible hypogonadotropic hypogonadism (HH) in this group of patients. Purpose To investigate the reliability of pituitary-R2 as a marker to estimate the extent of pituitary iron load by comparing the pituitary magnetic resonance imaging (MRI) findings with hepatic iron load and serum ferritin levels. Read More

    MRI evaluation of ligaments and tendons of foot arch in talar dome osteochondral lesions.
    Acta Radiol 2017 Jan 1:284185117730853. Epub 2017 Jan 1.
    Department of Radiology, Kayseri Training and Research Hospital, Kayseri, Turkey.
    Background There are no publications in literature describing an association between disorders of the ligaments and tendons supporting the foot arch and osteochondral lesions of the talus (OCLT). We believe there may be a correlation between the damage of these structures. Purpose To investigate the pathologies of main ligaments and tendons that support the foot arch in sprained ankles, by reviewing magnetic resonance imaging (MRI) studies and comparing the results in two groups of patients, with and without OCLT. Read More

    Role of acoustic radiation force impulse and shear wave velocity in prediction of preterm birth: a prospective study.
    Acta Radiol 2017 Jan 1:284185117730689. Epub 2017 Jan 1.
    1 Department of Radiodiagnosis, 471653 Teerthanker Mahaveer Medical College and Research Centre , Teerthanker Mahaveer University, Moradabad, India.
    Background Preterm birth is one of the important causes of neonatal morbidity where we rely on subjective criteria such as modified Bishop's scoring and contemporary sonographic measurement of cervical length. Acoustic radiation force impulse (ARFI) is a technological advancement in elastography that can be employed in prediction of cervical softening and preterm labor. Purpose To evaluate the role of ARFI technique and shear wave velocity (SWV) estimates as a predictor of preterm birth and its comparison with other clinical and sono-elastographic measures. Read More

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