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Acta Radiologica Open

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https://www.readbyqxmd.com/read/29662687/efficacy-of-percutaneous-transhepatic-portal-vein-embolization-using-gelatin-sponge-particles-and-metal-coils
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/29163987/medial-collateral-ligament-calcification-a-rare-knee-pain-entity-with-literature-review
#14
Md Abu Bakar Siddiq, Israt Jahan
Medial knee pain can originate from both osseous and non-osseous soft tissue structures including medial collateral ligament (MCL), creating a raft for patients' sufferings. Previously published works demonstrated MCL calcification as a rare medial knee pain entity. Alongside physical examination, radio-imaging techniques, namely conventional X-ray, CT/MRI scanning, etc. have been reported to be useful in recognizing MCL calcification. The present study demonstrates MCL calcification in a 60-year-old Asian-Bangladeshi woman, using high frequency diagnostic ultrasonogram and is the first reported study in the literature...
November 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29123920/a-prospective-study-comparing-whole-body-skeletal-x-ray-survey-with-18f-fdg-pet-ct-18f-naf-pet-ct-and-whole-body-mri-in-the-detection-of-bone-lesions-in-multiple-myeloma-patients
#15
Eva Dyrberg, Helle W Hendel, Gina Al-Farra, Lone Balding, Vibeke B Løgager, Claus Madsen, Henrik S Thomsen
Background: For decades, the most widely used imaging technique for myeloma bone lesions has been a whole-body skeletal X-ray survey (WBXR), but newer promising imaging techniques are evolving. Purpose: To compare WBXR with the advanced imaging techniques 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT), 18F-sodium fluoride (NaF) PET/CT and whole-body magnetic resonance imaging (WB-MRI) in the detection of myeloma bone lesions...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29123919/t2-mapping-and-post-contrast-t1-dgemric-of-the-patellar-cartilage-12-year-follow-up-after-patellar-stabilizing-surgery-in-childhood
#16
Eva Bengtsson Moström, Eveliina Lammentausta, Thröstur Finnbogason, Lars Weidenhielm, Per-Mats Janarv, Carl Johan Tiderius
Background: Cartilage degeneration has been reported after recurrent patellar dislocation. However, effects of surgical stabilization in childhood have not yet been described. Purpose: To examine the cartilage quality in very young adults operated with a patellar stabilizing procedure due to recurrent patellar dislocation in childhood, and evaluate if cartilage quality correlates with clinical parameters and patient-reported outcomes. Material and Methods: Seventeen patients were investigated ≥ 5 years (mean = 11...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29085671/mri-texture-features-may-predict-differentiation-and-nodal-stage-of-cervical-cancer-a-pilot-study
#17
Anton S Becker, Soleen Ghafoor, Magda Marcon, Jose A Perucho, Moritz C Wurnig, Matthias W Wagner, Pek-Lan Khong, Elaine Yp Lee, Andreas Boss
BACKGROUND: Texture analysis in oncological magnetic resonance imaging (MRI) may yield surrogate markers for tumor differentiation and staging, both of which are important factors in the treatment planning for cervical cancer. PURPOSE: To identify texture features which may predict tumor differentiation and nodal status in diffusion-weighted imaging (DWI) of cervical carcinoma. MATERIAL AND METHODS: Twenty-three patients were enrolled in this prospective, institutional review board (IRB)-approved study...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29051834/fdg-avid-breast-cancer-bone-metastases-silent-on-ct-and-scintigraphy-a-case-report-with-radiologic-pathologic-correlation
#18
Daniel Jeong, Marilyn Bui, Daniel Peterson, Jaime Montilla-Soler, Kenneth L Gage
Bone is the one of the most common distant metastatic sites in breast cancer. Routine initial breast cancer staging evaluation typically includes computed tomography (CT) and skeletal scintigraphy while 18F fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) is reserved for clinically high-risk cases. Since FDG PET-CT is not routinely performed during staging or surveillance evaluations, it is important for radiologists and clinicians to appreciate the limitations of bone metastasis detection on CT and scintigraphy...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28989798/how-to-train-radiology-residents-to-diagnose-pulmonary-embolism-using-a-dedicated-mri-protocol
#19
Anna Nordgren Rogberg, Sven Nyrén, Eli Westerlund, Peter Lindholm
BACKGROUND: In recent years, magnetic resonance imaging (MRI) has been suggested as an alternative to computed tomography angiography (CTA) to diagnose pulmonary embolism (PE). In previous studies, only senior radiologists have been evaluated as reviewers. PURPOSE: To investigate if radiology residents can be trained to review MRI regarding PE and to determine the learning curve effects. MATERIAL AND METHODS: Four residents independently went through a training program consisting of 70 participants that had undergone steady-state free precession MRI...
September 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28959457/hemangioma-of-the-rib-showing-a-relatively-high-18f-fdg-uptake-a-case-report-with-a-literature-review
#20
Takahide Itabashi, Makoto Emori, Yoshinori Terashima, Tadashi Hasegawa, Junya Shimizu, Satoshi Nagoya, Toshihiko Yamashita
Hemangioma of the rib is a rare benign tumor that is often difficult to distinguish from malignant bone tumors. Rib hemangioma often shows bony disruption with a slight cortical disruption, extraosseous lesion, and expanded bone on computed tomography (CT). We report the case of a 68-year-old man with atypical rib hemangioma with a slight cortical disruption and no expanded bone. The tumor showed relatively high 18FDG-uptake on positron emission tomography (PET)/CT. Rib hemangioma often shows higher 18FDG-uptake...
September 2017: Acta Radiologica Open
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