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Acta Radiologica Open

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https://www.readbyqxmd.com/read/29900008/re-efficacy-of-oral-contrast-agents-for-upper-gastrointestinal-signal-suppression-in-mrcp-a-systematic-review-of-the-literature-by-frisch-et-al
#1
Suraindra Rajadurai, Numan Kutaiba
No abstract text is available yet for this article.
June 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29872548/histopathology-findings-of-non-mass-cancers-on-breast-ultrasound
#2
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
https://www.readbyqxmd.com/read/29872547/imaging-review-of-the-anterior-skull-base
#3
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
https://www.readbyqxmd.com/read/29780616/multiple-intra-hepatic-and-abdominal-splenosis-an-easy-call-if-you-know-about-it
#4
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
https://www.readbyqxmd.com/read/29780615/feasibility-of-synthetic-mri-in-knee-imaging-in-routine-practice
#5
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
https://www.readbyqxmd.com/read/29760949/new-patient-controlled-abdominal-compression-method-in-radiography-radiation-dose-and-image-quality
#6
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
https://www.readbyqxmd.com/read/29770228/acoustic-radiation-force-impulse-arfi-elastography-in-a-cohort-of-alpha-1-antitrypsin-deficient-individuals-and-healthy-volunteers
#7
Sandra Diaz, Behrouz Mostafavi, Hanan A Tanash, Eeva Piitulainen
Background: Acoustic radiation force impulse (ARFI) elastography has been used to assess liver stiffness non-invasively. However, its usefulness in alpha-1 antitripsin-deficient (AATD) individuals is unknown. Purpose: To assess if liver fibrosis is present in a cohort of AATD individuals using ARFI elastography. Material and Methods: Eighty-three participants aged 38-39 years, except for two who were aged 40 years, underwent ultrasound elastography of the liver with ARFI technique...
April 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29662687/efficacy-of-percutaneous-transhepatic-portal-vein-embolization-using-gelatin-sponge-particles-and-metal-coils
#8
Tomohiro Komada, Kojiro Suzuki, Takashi Mizuno, Tomoki Ebata, Masaya Matsushima, Shinji Naganawa, Masato Nagino
Background: Percutaneous transhepatic portal vein embolization (PTPE) can increase the future liver remnant (FLR) volume before extended liver resection; however, there is no current consensus regarding the best embolic material for PTPE. Purpose: To evaluate the efficacy of PTPE using gelatin sponge particles and coils. Material and Methods: The medical records of 136 patients who underwent PTPE using gelatin sponge particles and metal coils were retrospectively reviewed...
April 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29623218/the-influence-of-a-peritoneovenous-shunt-for-cirrhotic-and-malignant-intractable-ascites-on-renal-function
#9
Takafumi Segawa, Kenichi Kato, Kazuya Kawashima, Tomohiro Suzuki, Shigeru Ehara
Background: Peritoneovenous shunts (PVS) are widely used for palliation of intractable ascites caused by peritoneal carcinomatosis (PC) or liver cirrhosis (LC). Some patients who need PVS have renal dysfunction. However, renal dysfunction is considered a relative contraindication. Therefore, it is important to assess renal function before PVS placement. Purpose: To evaluate the relationship between PVS and renal function. Material and Methods: Between October 2007 and July 2015, 60 patients (PC = 47; LC = 10; others = 3) underwent PVS placement for intractable ascites...
March 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29531795/growth-of-the-colon-and-rectum-throughout-gestation-evaluation-with-fetal-mri
#10
Michalle Soudack Ben-Nun, Aviva Ben-Shlush, Lisa Raviv Zilka
Background: Congenital abnormalities of the gastrointestinal tract are increasingly being evaluated by prenatal magnetic resonance imaging (MRI). However, there is a paucity of reports describing the normal quantitative development of the fetal colon and rectum on MRI. Purpose: To provide growth curves of the MRI estimated diameter of the fetal colon and rectum as a function of gestational age. Material and Methods: This is a retrospective review of 191 singleton fetal MRI studies at 25-39 weeks of gestation...
March 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29531794/role-of-ct-angiography-in-bilateral-pulmonary-sequestration-a-case-report
#11
Rizwana Yasmin, Dorte R Stærk, Anna Kalhauge, Henrik J Hansen, Tina E Olsen, Lisa L Maroun
Bilateral pulmonary sequestration (PS) is a very rare congenital malformation. We describe a case of bilateral intralobar pulmonary sequestration (ILS) in a newborn. Both sequestrations received arterial supply from separate branches of the descending aorta and venous drainage was into ipsilateral inferior pulmonary veins. Prenatal ultrasonography showed cystic changes in the lungs. Computed tomography angiography (CTA) with supplemental two-dimensional (2D) and three-dimensional (3D) images was performed to clearly define the pathology and revealed bilateral intralobar pulmonary sequestration with aberrant blood supply...
March 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29511573/selective-venous-sampling-supports-localization-of-adenoma-in-primary-hyperparathyroidism
#12
Masaya Ikuno, Takayuki Yamada, Yasumoto Shinjo, Tsuyoshi Morimoto, Reiko Kumano, Kunihiro Yagihashi, Takuyuki Katabami, Yasuo Nakajima
Background: Selective venous sampling (SVS) is an invasive localization study for persistent or recurrent hyperparathyroidism. Purpose: To assess the role of SVS in addition to non-invasive imaging for primary hyperparathyroidism (pHPT). Material and Methods: This study was approved by the institutional review board and included 14 patients who underwent SVS and subsequent parathyroidectomy between January 2014 and April 2017 following a clinical diagnosis of pHPT...
February 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29487748/factors-associated-with-pericolic-fat-stranding-of-colon-cancer-on-computed-tomography-colonography
#13
Tsuyoshi Morimoto, Takayuki Yamada, Kunihisa Miyakawa, Yasuo Nakajima
Background: Pericolic fat stranding on computed tomography (CT) scans has been an important feature for staging colon cancer. However, the factors associated with pericolic fat stranding have not been elucidated to date. Purpose: To determine factors associated with pericolic fat stranding of colon cancer on CT colonography (CTC). Material and Methods: Overall, 150 patients with 155 colon cancer lesions were retrospectively assessed by two radiologists for pericolic fat stranding on CTC...
February 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29456872/accuracy-in-local-staging-of-prostate-cancer-by-adding-a-three-dimensional-t2-weighted-sequence-with-radial-reconstructions-in-magnetic-resonance-imaging
#14
Fredrik Jäderling, Tommy Nyberg, Michael Öberg, Stefan Carlsson, Mikael Skorpil, Lennart Blomqvist
Background: The evidence supporting the use of magnetic resonance imaging (MRI) in prostate cancer detection has been established, but its accuracy in local staging is questioned. Purpose: To investigate the additional value of multi-planar radial reconstructions of a three-dimensional (3D) T2-weighted (T2W) MRI sequence, intercepting the prostate capsule perpendicularly, for improving local staging of prostate cancer. Material and Methods: Preoperative, bi-parametric prostate MRI examinations in 94 patients operated between June 2014 and January 2015 where retrospectively reviewed by two experienced abdominal radiologists...
February 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29375894/screening-detected-desmoid-tumor-of-the-breast-findings-at-conventional-imaging-and-digital-breast-tomosynthesis
#15
Tatjana Samardzic, Jon Lømo, Per Skaane
Desmoid tumor of the breast is a rare benign entity that usually is mistaken for carcinoma clinically and radiologically. We report two cases of desmoid tumor of the breast detected by mammography screening using digital breast tomosynthesis (DBT). The larger tumor was detected at both full-field digital mammography (FFDM) and DBT. The smaller desmoid tumor, however, was identified only at tomosynthesis. Mammographic and ultrasonographic findings at diagnostic work-up were consistent with carcinoma of the breast...
January 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29375893/a-comparative-ultrasonographic-evaluation-of-intrarenal-artery-resistive-index-among-hypertensive-and-normotensive-adults-in-a-black-african-population-compared-to-a-european-population
#16
George Madubueze, Emmanuel Ugwa
Background: Hypertensive nephropathy is an important medical problem among the black African population. Early detection of renovascular changes using ultrasonography can provide opportunity for immediate intervention towards preventing or at least delaying the irreversible hypertensive nephropathy. Purpose: To compare intrarenal resistive index (RI) in healthy normotensive and hypertensive adults in Kano, Nigeria. Material and Methods: A prospective comparative study of intrarenal RI using ultrasound in 150 hypertensives and 150 normotensive controls...
January 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29372076/effects-of-diffusion-time-on-non-gaussian-diffusion-and-intravoxel-incoherent-motion-ivim-mri-parameters-in-breast-cancer-and-hepatocellular-carcinoma-xenograft-models
#17
Mami Iima, Tomomi Nobashi, Hirohiko Imai, Sho Koyasu, Tsuneo Saga, Yuji Nakamoto, Masako Kataoka, Akira Yamamoto, Tetsuya Matsuda, Kaori Togashi
Background: Perfusion-related intravoxel incoherent motion (IVIM) and non-Gaussian diffusion magnetic resonance (MR) parameters are becoming important biomarkers for differentiating malignant from benign tumors without contrast agents. However, diffusion-time dependence has rarely been investigated in tumors. Purpose: To investigate the relationship between diffusion time and diffusion parameters in breast cancer and hepatocellular carcinoma xenograft mouse models...
January 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29242748/optimization-of-prostate-mri-acquisition-and-post-processing-protocol-a-pictorial-review-with-access-to-acquisition-protocols
#18
REVIEW
Ivan Jambor
The aim of this review article is to provide insight into the optimization of 1.5-Testla (T) and 3-T prostate magnetic resonance imaging (MRI). An approach for optimization of data quantification, especially diffusion-weighted imaging (DWI), is provided. Benefits and limitations of various pulse sequences are discussed. Importable MRI protocols and access to imaging datasets is provided. Careful optimization of prostate MR acquisition protocol allows the acquisition of high-quality prostate MRI using clinical 1...
December 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29225924/ct-dental-artifact-comparison-of-an-iterative-metal-artifact-reduction-technique-with-weighted-filtered-back-projection
#19
Felix E Diehn, Gregory J Michalak, David R DeLone, Amy L Kotsenas, E Paul Lindell, Norbert G Campeau, Ahmed F Halaweish, Cynthia H McCollough, Joel G Fletcher
Background: Dental hardware produces streak artifacts on computed tomography (CT) images reconstructed with the standard weighted filtered back projection (wFBP) method. Purpose: To perform a preliminary evaluation of an iterative metal artifact reduction (IMAR) technique to assess its ability to improve anatomic visualization over wFBP in patients with dental amalgam or other hardware. Material and Methods: CT images from patients with dental hardware were reconstructed using wFBP and IMAR software and soft-tissue or bone window/level settings...
November 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29201434/influence-of-longitudinal-position-on-the-evolution-of-steady-state-signal-in-cardiac-cine-balanced-steady-state-free-precession-imaging
#20
Tyler J Spear, Tori A Stromp, Steve W Leung, Moriel H Vandsburger
Background: Emerging quantitative cardiac magnetic resonance imaging (CMRI) techniques use cine balanced steady-state free precession (bSSFP) to measure myocardial signal intensity and probe underlying physiological parameters. This correlation assumes that steady-state is maintained uniformly throughout the heart in space and time. Purpose: To determine the effects of longitudinal cardiac motion and initial slice position on signal deviation in cine bSSFP imaging by comparing two-dimensional (2D) and three-dimensional (3D) acquisitions...
November 2017: Acta Radiologica Open
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