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Acta Radiologica Open

Thet-Thet-Lwin, Akio Yoneyama, Motoki Imai, Hiroko Maruyama, Kazuyuki Hyodo, Tohoru Takeda
Spontaneously growing testicular seminoma in the aged rat was imaged by one of the most sensitive imaging modalities, namely, phase-contrast X-ray computed tomography (CT) with crystal X-ray interferometry. Phase-contrast X-ray CT clearly depicted the detailed inner structures of the tumor and provided 20× magnified images compared to light-microscopic images. Phase-contrast X-ray CT images are generated based on density variations in the object, whereas pathological images are based on differentiation of cellular structures, such as the cellular nuclei and cytoplasm...
September 2018: Acta Radiologica Open
Elias Vaattovaara, Marko Nikki, Mika Nevalainen, Mervi Ilmarinen, Osmo Tervonen
Background: In many emergency radiology units, most of the night-time work is performed by radiology residents. Residents' preliminary reports are typically reviewed by an attending radiologist. Accordingly, it is known that discrepancies in these preliminary reports exist. Purpose: To evaluate the quality of night-time computed tomography (CT) interpretations made by radiology residents in the emergency department. Material and Methods: Retrospectively, 1463 initial night-time CT interpretations given by a radiology resident were compared to the subspecialist's re-interpretation given the following weekday...
September 2018: Acta Radiologica Open
Johan Bohlin, Erik Dahlin, Julia Dreja, Bodil Roth, Olle Ekberg, Bodil Ohlsson
Background: Gastrointestinal symptoms and changes in colonic transit time (CTT) are common in the population. Purpose: To evaluate consecutive patients who had been examined for CTT, along with completion of a diary about laxative and drug use, lifestyle factors, and gastrointestinal symptoms, to identify possible associations with longer or prolonged CTT. Material and Methods: A total of 610 consecutive patients had undergone the radiopaque marker method with an abdominal X-ray for clinical purposes...
September 2018: Acta Radiologica Open
Tomohide Sanada, Jinho Park, Masaru Hagiwara, Norihiko Ikeda, Takeshi Nagai, Jun Matsubayashi, Kazuhiro Saito
Intrathoracic endometriosis is classified into pleurodiaphragmatic endometriosis and bronchopulmonary endometriosis. Bronchopulmonary endometriosis is rare. Computed tomography (CT) findings of bronchopulmonary endometriosis are lung nodules, with or without cavities, or surrounding ground-glass opacities. Features vary with menstrual status. Recently, the usefulness of magnetic resonance imaging (MRI) was reported for diagnosis of intrathoracic endometriosis, but most published reports were about pleurodiaphragmatic endometriosis...
September 2018: Acta Radiologica Open
Georg J Wengert, Thomas H Helbich, Panagiotis Kapetas, Pascal At Baltzer, Katja Pinker
Mammography, as the primary screening modality, has facilitated a substantial decrease in breast cancer-related mortality in the general population. However, the sensitivity of mammography for breast cancer detection is decreased in women with higher breast densities, which is an independent risk factor for breast cancer. With increasing public awareness of the implications of a high breast density, there is an increasing demand for supplemental screening in these patients. Yet, improvements in breast cancer detection with supplemental screening methods come at the expense of increased false-positives, recall rates, patient anxiety, and costs...
September 2018: Acta Radiologica Open
Bo Mussmann, Poul Erik Andersen, Trine Torfing, Søren Overgaard
Background: Measuring bone mineral density (BMD) around acetabular prosthetic components with computed tomography (CT) is challenged by the complex anatomy and metal artifacts. Three-dimensional (3D) segmentation is required for the analysis, but it is usually not practically applicable on current CT workstations. Purpose: To test the between-scan agreement and reliability of custom segmentation software for BMD measurements adjacent to cemented and uncemented acetabular cups in dual-energy CT (DECT)...
September 2018: Acta Radiologica Open
Thomas Kjeld, Tem S Jørgensen, Gitte Fornitz, Jan Roland, Henrik C Arendrup
Closure of persistent foramen ovale (PFO) to avoid cryptogenic strokes is performed globally with enthusiasm but lacks prove of efficacy. We present a 79-year-old man who had had a PFO device introduced nine years previously because of cryptogenic strokes presenting as syncopes. The patient was referred from his general practitioner with two new syncopes. Transthoracic echocardiography revealed no cardiac causes of embolism. Transesophageal echocardiography (TEE) revealed a misplaced device like an umbrella in a storm, but no septum defects...
September 2018: Acta Radiologica Open
Subba Rao Digumarthy, Rachel Vining, Azadeh Tabari, Sireesha Nandimandalam, Alexi Otrakji, JoAnne O Shepard, Mannudeep K Kalra
Background: Laterality errors in radiology reports can lead to serious errors in management. Purpose: To reduce errors related to side discrepancies in radiology reports from thoracic imaging by 50% over a six-month period with education and voice recognition software tools. Material and Methods: All radiology reports at the Thoracic Imaging Division from the fourth quarter of 2016 were reviewed manually for presence of side discrepancies (baseline data)...
July 2018: Acta Radiologica Open
Leena Lehti, Marcus Söderberg, Peter Höglund, Ulf Nyman, Anders Gottsäter, Johan Wassélius
Background: Computed tomographic angiography (CTA) may require a non-contrast enhanced dataset for the diagnostic workup. By using dual-energy acquisition, it is possible to obtain a virtual non-contrast-enhanced (VNC) dataset, thereby possibly eliminating the non-contrast acquisition and reducing the radiation dose. Purpose: To compare image quality of VNC images reconstructed from arterial phase dual-energy CTA to true non-contrast (TNC) images, and to assess whether VNC images were of sufficient quality to replace TNC images...
July 2018: Acta Radiologica Open
Roberto Vargas Paris, Mikael Skorpil, Eli Westerlund, Peter Lindholm, Sven Nyrén
Background: Magnetic resonance imaging (MRI) can be an alternative method to computed tomography angiography (CTA) for pulmonary embolism. Purpose: To evaluate the feasibility of diffusion-weighted imaging (DWI) detecting acute pulmonary embolism (PE) in free-breathing humans. Material and Methods: Twenty patients with PE verified by CTA and 20 controls were investigated with MRI (1.5 Aera, Siemens Healthcare). All sequences were performed in the transversal plane using free-breathing without gating...
June 2018: Acta Radiologica Open
Ludovico M Garau, Daniele Guerrieri, Flaminia De Cristofaro, Alice Bruscolini, Giuseppe Panzironi
Background: Current magnetic resonance imaging (MRI) techniques for measuring extraocular muscle (EOM) volume enlargement are not ideally suited for routine follow-up of Graves' ophthalmopathy (GO) because the difficulty of segmenting the muscles at the tendon insertion complicates and lengthens the study protocol. Purpose: To measure the EOM sampled volume (SV) and assess its correlation with proptosis. Material and Methods: A total of 37 patients with newly diagnosed GO underwent 3-T MRI scanning with iterative decomposition of water and fat (IDEAL) sequences with and without contrast enhancement...
June 2018: Acta Radiologica Open
Anders Svensson, Kerstin Cederlund, Torkel B Brismar, Raquel Themudo
Aortic subvalvular pseudoaneurysms (PSA) are particularly subjected to strain and shear stress forces from blood flow and therefore their size can vary along the heart cycle. Here we describe a case of an aortic subvalvular PSA that shows significant variation in size between systolic and diastolic phase during retrospective ECG-triggered cardiac computed tomography angiography.
June 2018: Acta Radiologica Open
Anders Svensson, Torkel B Brismar, Fabian Morsbach
Occlusion of the thoracic venous system and/or occlusion of central venous catheters (CVC) of unknown cause can, in selected cases, require advanced imaging. Here, we describe a case study of a patient with a failing central dialysis catheter (CDC) which was diagnosed by computed tomography (CT) in connection with a single-phase bilateral low-dose contrast medium (CM) injection using only 3.6 g of iodine. By injecting a low CM dose, the risk of streak artifacts from first-pass of high intravascular concentrations of CM can be avoided...
June 2018: Acta Radiologica Open
Gracijela Bozovic, Catharina Adlercreutz, Isabella M Björkman-Burtscher, Peter Reinstrup, Richard Ingemansson, Elin Skansebo, Mats Geijer
Background: Organ donation guidelines recommend a "clear" conventional bedside chest radiograph before lung transplantation despite only moderate accuracy for cardiopulmonary abnormalities. Purpose: To evaluate the influence of donor image interpretation on lung transplantation outcome in recipients by following early and late complications, one-year survival, and to correlate imaging findings and blood gas analysis with lung transplantation outcome in recipients...
June 2018: Acta Radiologica Open
Suraindra Rajadurai, Numan Kutaiba
No abstract text is available yet for this article.
June 2018: Acta Radiologica Open
Hye Rin Kim, Hae Kyoung Jung
Background: There is little research done on non-mass cancers (NMCs) on breast ultrasound (US). Purpose: To evaluate large-sectional histopathology findings of NMCs on breast US. Material and Methods: The mammographic and histopathology features of biopsy proven 36 breast cancers which showed pure non-mass lesions on US were retrospectively reviewed. Results: The most common mammographic finding was microcalcification (23/35, 65...
June 2018: Acta Radiologica Open
Olivia Francies, Levan Makalanda, Dimitris Paraskevopolous, Ashok Adams
The anterior skull base (ASB) is intimately associated with the unique soft tissue subtypes of the nasal cavity, paranasal sinuses, orbits, and intracranial compartment. Pathology involving the ASB is rare but the causes are manifold and can be broadly subdivided into those intrinsic to the skull base and processes extending from below or above. Sinonasal pathology is the most commonly encountered and poses significant management challenges that rely heavily on accurate interpretation of the radiological findings...
May 2018: Acta Radiologica Open
Doriana Vergara, Francesco Ginolfi, Stefano Moscati, Beniamino Giordano, Nicola Ferrara, Camilla Panico, Massimo Imbriaco
Hepatic splenosis represents the heterotopic implantation of splenic tissue caused by the spillage of cells from the spleen usually after splenectomy or splenic trauma. This condition is usually an incidental finding during surgery and its real incidence is unknown. Splenic implants, which can be placed anywhere in the abdominal cavity, are usually multiple and may be confused with different benign and malignant conditions such as renal tumors, abdominal lymphomas, and endometriosis. We hereby report an unusual case of multiple abdominal splenosis, with a particular intra-hepatic location, that could be misinterpreted as an hepato-cellular carcinoma...
May 2018: Acta Radiologica Open
Sana Boudabbous, Angeliki Neroladaki, Ilias Bagetakos, Marion Hamard, Bénédicte Ma Delattre, Maria Isabel Vargas
Background: Synthetic magnetic resonance (MR) is a method allowing reduction of examination time and access to quantitative imaging. Purpose: This study sought to assess the image quality and diagnostic accuracy of synthetic magnetic resonance imaging (MRI) compared to standard MRI in patients with knee pain. Material and Methods: In total, 22 patients underwent standard 1.5 knee MRI with an added synthetic sequence. Quantitative T1, T2, and proton density (PD) images were generated synthetically; T1, PD, and short tau inversion recovery (STIR) weighted images were created with chosen echo time (TE), repetition time (TR), and inversion time (TI)...
May 2018: Acta Radiologica Open
Oili Piippo-Huotari, Eva Norrman, Agneta Anderzén-Carlsson, Håkan Geijer
Background: The radiation dose for patients can be reduced with many methods and one way is to use abdominal compression. In this study, the radiation dose and image quality for a new patient-controlled compression device were compared with conventional compression and compression in the prone position . Purpose: To compare radiation dose and image quality of patient-controlled compression compared with conventional and prone compression in general radiography. Material and Methods: An experimental design with quantitative approach...
May 2018: Acta Radiologica Open
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