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Acta Radiologica

Chonglin Yang, Xiangyang Xu, Mu Hu, Bibo Wang, Yuan Zhu, Jinhao Liu
Background Cobey and Buck described methods to evaluate hindfoot alignment, but it is still unclear which method is better and easier to perform in clinical practice. Purpose To evaluate the optimal method for radiography of hindfoot alignment. Material and Methods We randomly selected 50 patients visiting the foot and ankle surgery outpatient department who underwent hindfoot alignment radiography between 1 July and 31 August 2015. Radiographs were taken using both Cobey's and Buck's methods. The patients were divided into three groups by calcaneal inclination angle...
June 2017: Acta Radiologica
Eli Eikefjord, Erling Andersen, Erlend Hodneland, Erik A Hanson, Steven Sourbron, Einar Svarstad, Arvid Lundervold, Jarle T Rørvik
Background High repeatability, accuracy, and precision for renal function measurements need to be achieved to establish renal dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) as a clinically useful diagnostic tool. Purpose To investigate the repeatability, accuracy, and precision of DCE-MRI measured renal perfusion and glomerular filtration rate (GFR) using iohexol-GFR as the reference method. Material and Methods Twenty healthy non-smoking volunteers underwent repeated DCE-MRI and an iohexol-GFR within a period of 10 days...
June 2017: Acta Radiologica
Karin Persson, Geir Selbæk, Anne Brækhus, Mona Beyer, Maria Barca, Knut Engedal
Background The dementia syndrome has been regarded a clinical diagnosis but the focus on supplemental biomarkers is increasing. An automatic magnetic resonance imaging (MRI) volumetry method, NeuroQuant® (NQ), has been developed for use in clinical settings. Purpose To evaluate the clinical usefulness of NQ in distinguishing Alzheimer's disease dementia (AD) from non-dementia and non-AD dementia. Material and Methods NQ was performed in 275 patients diagnosed according to the criteria of ICD-10 for AD, vascular dementia and Parkinson's disease dementia (PDD); the Winblad criteria for mild cognitive impairment; the Lund-Manchester criteria for frontotemporal dementia; and the revised consensus criteria for Lewy body dementia (LBD)...
June 2017: Acta Radiologica
Youichi Machida, Akiko Shimauchi, Yoshifumi Kuroki, Mitsuhiro Tozaki, Yoshiaki Kato, Kazuei Hoshi, Eisuke Fukuma
Background Because of its small size, a focus in breast magnetic resonance imaging (MRI) must be evaluated on the basis of characteristics other than morphologic features. Patient-related factors including patient age, in conjunction with lesion-related factors, could be useful for decision-making. Purpose To assess the probability of malignant foci based on both lesion- and patient-related factors, and to propose a relevant decision-making method. Material and Methods Foci in our breast MRI database dating from April 2006 to June 2013 were retrospectively identified and analyzed...
June 2017: Acta Radiologica
Vibhor Wadhwa, Aws S Hamid, Yogesh Kumar, Kelly M Scott, Avneesh Chhabra
Pudendal neuralgia is being increasingly recognized as a cause of chronic pelvic pain, which may be related to nerve injury or entrapment. Due to its complex anatomy and branching patterns, the pudendal nerve abnormalities are challenging to illustrate. High resolution 3 T magnetic resonance neurography is a promising technique for the evaluation of peripheral neuropathies. In this article, the authors discuss the normal pudendal nerve anatomy and its variations, technical considerations of pudendal nerve imaging, and highlight the normal and abnormal appearances of the pudendal nerve and its branches with illustrative case examples...
June 2017: Acta Radiologica
Vuslat Lale Bakir, Baris Bakir, Sükrü Sanli, Sevda Ozel Yildiz, Ahmet Cem Iyibozkurt, Merve Gülbiz Kartal, Ekrem Yavuz
Background Many publications have examined the relationship between apparent diffusion coefficient (ADC) values and tumor grade in endometrial cancer. Nevertheless, none were designed to evaluate according to the histopathological type of endometrioid and non-endometrioid tumors. Purpose To evaluate the role of diffusion-weighted imaging (DWI) in the differential diagnosis of endometrioid and non-endometrioid cancer of the uterus, by comparing them with contrast-enhanced magnetic resonance imaging (MRI) findings...
June 2017: Acta Radiologica
Zhongyi Chen, Irina Boldeanu, Simon Nepveu, Madeleine Durand, Anne S Chin, Claude Kauffmann, Samer Mansour, Gilles Soulez, Cécile Tremblay, Carl Chartrand-Lefebvre
Background Coronary computed tomography angiography (CTA) allows the evaluation of coronary plaque volume and low attenuation (lipid-rich) component, for plaque vulnerability assessment. Purpose To determine the effect of iterative reconstruction (IR) on coronary plaque volume and composition. Material and Methods Consecutive patients without coronary artery disease were prospectively enrolled for 256-slice CT. Images were reconstructed with both filtered back projection (FBP) and a hybrid IR algorithm (iDose(4), Philips) levels 1, 3, 5, and 7...
June 2017: Acta Radiologica
Caroline Clausen, Benny Dahl, Susanne Christiansen Frevert, Julie Lyng Forman, Michael Bachmann Nielsen, Lars Lönn
Background Preoperative embolization is based on the preoperative digital subtraction angiography (DSA) tumor blush, and as such is considered the "gold standard" for determining tumor vascularity. However, to our knowledge reliability studies evaluating vascularity ratings of DSA tumor blush in spinal metastases have not been published previously. Purpose To evaluate inter- and intra-rater agreement in the assessment of the vascularity of spinal metastases using DSA tumor blush. Material and Methods This reliability study included 46 patients with symptomatic metastatic spinal cord compression requiring surgery...
June 2017: Acta Radiologica
Juliano Lara Fernandes, Luciana Andrea Barozi Fioravante, Monica P Verissimo, Sandra R Loggetto
Background Iron overload assessment with magnetic resonance imaging (MRI) using T2* has become a key diagnostic method in the management of many diseases. Quantitative analysis of the MRI images with a cost-effective tool has been a limitation to increased use of the method. Purpose To provide a free software solution for this purpose comparing the results with a commercial solution. Material and Methods The free tool was developed as a standalone program to be directly downloaded and ran in a common personal computer platform without the need of a dedicated workstation...
June 2017: Acta Radiologica
Kirsi Miettunen, Eija Metsälä
Background The purpose of clinical audits performed in radiology units is to reduce the radiation dose of patients and staff and to implement evidence-based best practices. Purpose To describe auditor recommendations in three Finnish clinical audit rounds performed in 2002-2014, and to determine if auditor recommendations have had any impact on improving medical imaging practice. Material and Methods The retrospective observational study was performed in radiology units holding a radiation safety license issued by the Finnish Radiation and Nuclear Safety Authority...
June 2017: Acta Radiologica
Meeyoung Nam, Han-Seong Jeong, Jung Hee Shin
Background Parathyroid carcinomas (PTC) are very rare. There have been a few studies on the contribution of ultrasound (US) in the diagnosis of PTC compared with parathyroid adenomas (PTA). Purpose To identify the differences between US findings of PTC and PTA in patients with primary hyperparathyroidism (PHPT). Material and Methods We enrolled seven patients with PTC and 32 consecutive patients with PTA whose diagnoses were confirmed by surgery at our institution between March 1994 and June 2015. We retrospectively compared the US features of the two groups, as well as the demographic, clinical, and biochemical characteristics (age, gender, palpability, and serum ionized calcium and parathyroid hormone [PTH] levels)...
June 2017: Acta Radiologica
Gwy Suk Seo, Gregory Dieudonne, Scott A Mooney, Johnny Uv Monu
Background We observed cases of extensive osteolysis of the femoral head following acetabular fractures even though the original fracture did not involve the femoral head or neck. This observation has been called massive osteolysis of the femoral head (MOFH). Purpose To evaluate the clinical and imaging features of MOFH to gain a better understanding of its patho-etiology. Material and Methods We retrospectively collected cases of acetabular fractures seen over a period of 10 years and evaluated the clinical features and imaging characteristics...
June 2017: Acta Radiologica
Soo Jeong Yoon, Dae Young Yoon, Young Kwon Cho, Sora Baek, Kyoung Ja Lim, Young Lan Seo, Eun Joo Yun
Background Animal research has played an important role in the field of radiology. Purpose To evaluate the characteristics and quality of published radiological animal research. Material and Methods A PubMed search was performed for radiological animal research articles (defined as studies using animal models with a radiologist as the first author) published in 1994, 2004, and 2014. The following information was extracted from each article: journal name, radiological subspecialty, imaging technique, animal species, number of animals used, number of authors, declared funding, country of origin, methodological quality, and ethical quality...
June 2017: Acta Radiologica
Guven Kahriman, Nevzat Ozcan, Serap Dogan, Oguz Karaborklu
Background Hydatid liver disease (HLD) is a significant health problem, especially in endemic areas worldwide. Percutaneous treatment is an effective alternative therapeutic option. Purpose To present the clinical and radiological results of percutaneous treatment of HLD in 190 patients. Material and Methods Percutaneous treatment of HLD between April 2005 and March 2015 was analyzed retrospectively. The demographic data, numbers and types of cysts, initial and final volumes of the cysts, types of percutaneous treatment, and procedure-related complications were determined...
June 2017: Acta Radiologica
Lixin Du, Yongqiang Yu, Yuli Wang, Jun Xia, Xixiong Qiu, Yi Lei
Background Multimodality magnetic resonance imaging (MRI) is an imaging technology that is used to integrate the structural and functional information of lesions. MRI can determine the staging of endometrial carcinoma, provide guidance for selection of surgical treatment and postoperative prognostic assessment, and has an important role in improving the survival of patients with endometrial carcinoma. Purpose To evaluate multimodality MRI staging accuracy for endometrial carcinoma based on the International Federation of Gynecology and Obstetrics (FIGO 2009) staging system...
May 2017: Acta Radiologica
Jiaywei Tsauo, Moon-Won Yoo, Jung-Hoon Park, Ho-Young Song, Eun Jung Jun, Young Chul Cho, Guk Bae Kim
Background Self-expandable metallic stent (SEMS) placement is a well-established palliative treatment approach for malignant gastroduodenal obstruction. In patients with a long (>10 cm) stricture, multiple stents placed in an overlapping fashion are often required. Purpose To investigate the outcomes of overlapping SEMS placement for the palliative treatment of malignant gastroduodenal obstruction in patients with a long (>10 cm) stricture. Material and Methods The medical records of 40 patients who underwent fluoroscopic overlapping SEMS placement for malignant gastroduodenal obstruction due to a long (>10 cm) stricture were reviewed...
May 2017: Acta Radiologica
Leif-Christopher Engel, Wai-Ee Thai, Hector Medina-Zuluaga, Mihaly Karolyi, Manavjot S Sidhu, Pal Maurovich-Horvat, Ronan Margey, Eugene Pomerantsev, Suhny Abbara, Brian B Ghoshhajra, Udo Hoffmann, Gary Y Liew
Background Heavy coronary artery calcification (CAC) impairs diagnostic accuracy of coronary computed tomography angiography (cCTA) and is considered to be a major limitation. Purpose To investigate the effect of non-evaluable CAC seen on cCTA on clinical decision-making by determining the degree of subsequent invasive testing and to assess the relationship between non-evaluable segments containing CAC and significant stenosis as seen in invasive coronary angiography (ICA). Material and Methods The study comprised of 356 patients who underwent cCTA and subsequent ICA within 2 months between 2005 and 2009...
May 2017: Acta Radiologica
Pirita Tahvonen, Heljä Oikarinen, Jaakko Niinimäki, Esa Liukkonen, Seija Mattila, Osmo Tervonen
Background Spinal disorders are a major public health problem. Appropriate diagnostic imaging is an essential part in the management of back complaints. Nevertheless, inappropriate imaging increases population collective dose and health costs without improving outcome. Purpose To determine the effects of active implementation of referral guidelines on the number and justification of spine radiography in primary care in one city. Material and Methods Specified guidelines for spine radiography were distributed to referring practitioners altogether three times during the study period...
May 2017: Acta Radiologica
Caterina Gaudiano, Riccardo Schiavina, Valerio Vagnoni, Fiorenza Busato, Marco Borghesi, Marco Bandini, Maddalena Di Carlo, Eugenio Brunocilla, Giuseppe Martorana, Rita Golfieri
Background Small renal masses (SRMs; ≤4 cm) represent a challenging issue. Computed tomography (CT) is widely used for investigating renal tumors even if its ability to differentiate among the different subtypes has not yet been definitively established. Purpose To assess the potential role of the morphological features and angiodynamic behavior on multiphasic CT in the preoperative evaluation of SRMs. Material and Methods The CT images of 80 patients with SRMs who underwent surgical resection at our institution were retrospectively reviewed...
May 2017: Acta Radiologica
Leilei Yuan, Jun Liu, Ying Kan, Jigang Yang, Xufu Wang
Background 99mTc-sestamibi (MIBI) parathyroid SPECT is generally regarded as the best preoperative localizing method in patients with hyperparathyroidism (HPT). However, 99mTc-MIBI SPECT is false negative in approximately 25% of adenomas. 11C-methionine positron emission tomography (PET) has been used in HPT with negative 99mTc-MIBI SPECT scan results. Purpose To systematically review and conduct a meta-analysis of published data on the performance of 11C-methionine PET in patients with HPT with negative 99mTc-MIBI SPECT...
May 2017: Acta Radiologica
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