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Acta Radiologica Open

Verena Plodeck, Ulrich Sommer, Gustavo B Baretton, Daniela E Aust, Michael Laniado, Ralf-Thorsten Hoffmann, Ivan Platzek
Pancreatic endometriosis is very rare with only a few cases reported in the literature. The imaging features are non-specific and the definitive diagnosis is usually only established after surgery. We report on a 68-year-old woman with left upper quadrant pain who demonstrated a mass in the pancreatic tail on imaging. Laboratory results showed only mildly elevated liver enzymes, tumor markers were within the normal range. A left pancreatectomy was performed, frozen section suggesting a benign lesion, and final histopathology confirmed endometriotic cysts...
September 2016: Acta Radiologica Open
Saleh Saleh Elessawy, Eman Muhammad Abdelsalam, Eman Abdel Razek, Samar Tharwat
BACKGROUND: Conventional magnetic resonance imaging (MRI) is a highly valuable tool for full assessment of the extent of bilateral symmetrical diffuse inflammatory myopathy, owing to its high sensitivity in the detection of edema which correlates with, and sometimes precedes, clinical findings. PURPOSE: To evaluate the use of whole-body (WB)-MRI in characterization and full assessment of the extent and distribution of diffuse inflammatory myopathy. MATERIAL AND METHODS: A prospective study on 15 patients presenting with clinical evidence of inflammatory myopathy...
September 2016: Acta Radiologica Open
Yan Zhang, Wenwen Liang, Guijun Wu, Xuelin Zhang, Ge Wen
BACKGROUND: Glaucoma is a neurodegenerative disease that affects both the retina and central visual pathway. Magnetization transfer imaging (MTI) is a sensitive magnetic resonance imaging (MRI) technique that can detect degenerative changes in the brain. PURPOSE: To investigate the geniculocalcarine (GCT) and striate areas in primary glaucoma patients using region of interest (ROI) analysis of magnetization transfer ratio (MTR). MATERIAL AND METHODS: Twenty patients with primary glaucoma in both eyes were compared with 31 healthy control patients...
September 2016: Acta Radiologica Open
Seiichiro Kojima, Hiroyuki Ito, Shinji Takashimizu, Hitoshi Ichikawa, Tomohiro Matsumoto, Terumitsu Hasebe, Norihito Watanabe
A 64-year-old woman treated for anemia and ascites exhibited hepatic encephalopathy. Abdominal ultrasonography and computed tomography (CT) showed communication between the portal vein and the middle hepatic vein, indicating an intrahepatic portosystemic venous shunt (PSS). Since hepatic encephalopathy of the patient was resistant to medical treatment, interventional radiology was performed for the treatment of shunt obliteration. Hepatic venography showed anastomosis between the hepatic vein branches, supporting the diagnosis of idiopathic portal hypertension (IPH)...
September 2016: Acta Radiologica Open
Daisuke Katayama, Keiko Kuriyama, Tatsuya Kinoshita, Keisuke Nagai, Hidenari Hongyo, Kentaro Kishimoto, Atsuo Inoue, Manabu Takamura, Soomi Choi
Pulmonary tumor thrombotic microangiopathy (PTTM) is a fatal malignancy-related condition that involves rapidly progressing hypoxia and pulmonary hypertension. We report a case of PTTM caused by prostate carcinoma, which was diagnosed before autopsy in an 81-year-old man. Computed tomography showed diffuse ground-glass opacities, consolidation, and small nodules in the peripheral regions of the lung. Autopsy showed adenocarcinoma cells embolizing small pulmonary arteries with fibrocellular intimal proliferation, which was consistent with PTTM caused by prostate carcinoma...
August 2016: Acta Radiologica Open
Heloise Barras, Vincent Dunet, Anne-Lise Hachulla, Jochen Grimm, Catherine Beigelman-Aubry
BACKGROUND: Model-based iterative reconstruction (MBIR) reduces image noise and improves image quality (IQ) but its influence on post-processing tools including maximal intensity projection (MIP) and minimal intensity projection (mIP) remains unknown. PURPOSE: To evaluate the influence on IQ of MBIR on native, mIP, MIP axial and coronal reformats of reduced dose computed tomography (RD-CT) chest acquisition. MATERIAL AND METHODS: Raw data of 50 patients, who underwent a standard dose CT (SD-CT) and a follow-up RD-CT with a CT dose index (CTDI) of 2-3 mGy, were reconstructed by MBIR and FBP...
August 2016: Acta Radiologica Open
Karen Cecilie Duus Thestrup, Vibeke Logager, Ingerd Baslev, Jakob M Møller, Rasmus Hvass Hansen, Henrik S Thomsen
BACKGROUND: Since multiparametric magnetic resonance imaging (mp-MRI) of the prostate exceeds 30 min, minimizing the evaluation time of significant (Gleason scores > 6) prostate cancer (PCa) would be beneficial. A reduced protocol might be sufficient for the diagnosis. PURPOSE: To study whether a short unenhanced biparametric MRI (bp-MRI) matches mp-MRI in detecting significant PCa. MATERIAL AND METHODS: A total of 204 men (median age, 65 years; mean ± SD, 64...
August 2016: Acta Radiologica Open
Bjørn Helge Østerås, Kristin Livelten Heggen, Hans Kristian Pedersen, Hilde Kjernlie Andersen, Anne Catrine T Martinsen
BACKGROUND: Iterative reconstruction can reduce image noise and thereby facilitate dose reduction. PURPOSE: To evaluate qualitative and quantitative image quality for full dose and dose reduced head computed tomography (CT) protocols reconstructed using filtered back projection (FBP) and adaptive statistical iterative reconstruction (ASIR). MATERIAL AND METHODS: Fourteen patients undergoing follow-up head CT were included. All patients underwent full dose (FD) exam and subsequent 15% dose reduced (DR) exam, reconstructed using FBP and 30% ASIR...
August 2016: Acta Radiologica Open
Chang Ho Jeon, Nak Jong Seong, Chang Jin Yoon, Seok-Soo Byun, Sang Eun Lee
BACKGROUND: With the wider application of nephron-sparing surgery, there has been an increase in the occurrence of postoperative hemorrhage. However, despite such an increase, there are only a limited number of reports regarding renal artery embolization (RAE) for the management of postoperative bleeding after nephron-sparing surgery, especially after robot-assisted laparoscopic partial nephrectomy (RALPN). PURPOSE: To evaluate the safety and clinical efficacy of transcatheter RAE for postoperative hemorrhage after open partial nephrectomy (OPN) and RALPN...
August 2016: Acta Radiologica Open
Peter Wostyn, Veva De Groot, Debby Van Dam, Kurt Audenaert, Hanspeter Esriel Killer, Peter Paul De Deyn
No abstract text is available yet for this article.
August 2016: Acta Radiologica Open
Emeka John Agwu, Anthony C Ugwu, Samuel L Shem, Muhammed Abba
BACKGROUND: Amniotic fluid (AF) is one of the major determinants of fetal biophysical profile and can predict pregnancy outcome. Abnormal value of amniotic fluid index (AFI) may indicate fetal and maternal disorders. PURPOSE: To establish reference standards for AFI for this population after 28 weeks of pregnancy and evaluate the relationship between AFI, the estimated fetal weight (EFWT), and fetal gender. MATERIAL AND METHODS: A prospective cross-sectional estimation of AFI and FWT was done in 385 apparently healthy pregnant women in the gestational age range of 28-42 weeks...
August 2016: Acta Radiologica Open
Kei Shibuya, Yoshinori Koyama, Yoshito Tsushima
The accordion phenomenon occurs because of mechanical distortion of a straightened vessel during coronary and vascular interventions. To date, however, this phenomenon has not been reported in vessels of the upper abdomen. We therefore describe the accordion phenomenon of the hepatic artery during transarterial chemoembolization seen while treating a liver tumor. As the accordion phenomenon is now known to involve hepatic arteries, it should be differentiated from vascular complications such as vasospasm or intimal injury...
August 2016: Acta Radiologica Open
Yumi Imamura, Reiko Nakajima, Kazuha Hatta, Akiyoshi Seshimo, Tatsuo Sawada, Koichiro Abe, Shuji Sakai
We report the 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) findings of sclerosing angiomatoid nodular transformation (SANT) of the spleen. The patient was a 37-year-old woman with a splenic mass incidentally found on abdominal ultrasound. FDG-PET/CT showed weak FDG accumulation (maximum standardized uptake value = 3.65). An unenhanced CT scan showed a low density and well-circumscribed splenic tumor that demonstrated weak enhancement from the arterial to delayed phase...
August 2016: Acta Radiologica Open
Sachintha Hapugoda, Charlie Chia-Tsong Hsu, Gigi Nga Chi Kwan, Trevor William Watkins, John A Rophael
An extremely rare case of duplicated superficial femoral artery (SFA) was incidentally observed on computed tomography angiogram (CTA) of the lower limbs for presurgical planning for an osteomyocutaneous fibula flap in a patient with T4a oropharyngeal squamous cell carcinoma (SCC). To our knowledge, this is the sixth reported case in the imaging literature. We performed a comprehensive review of the English literature and discuss the underlying embryological origin underpinning this rare anatomical variant.
July 2016: Acta Radiologica Open
Malene Roland Pedersen, Palle Jørn Sloth Osther, Søren Rafael Rafaelsen
BACKGROUND: Elastography of the testis can be used as a part of multiparametric examination of the scrotum. PURPOSE: To determine the testicular stiffness using acoustic radiation force impulse imaging (ARFI) technique in men with testicular microlithiasis (TML). MATERIAL AND METHODS: In 2013, 12 patients with diagnosed testicular microlithiasis in 2008 (mean age, 51 years; age range, 25-76 years) underwent a 5-year follow-up B-mode ultrasonography with three ARFI elastography measurements of each testis...
July 2016: Acta Radiologica Open
Daniel Jeong, Jung W Choi, Katherine Jeong, Lubomir Sokol
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy that is frequently misdiagnosed. We present a case of a 53-year-old man diagnosed with blastic plasmacytoid dendritic cell neoplasm with extensive computed tomography (CT) findings and provide an imaging focused review of this uncommon malignancy.
July 2016: Acta Radiologica Open
Nobuyuki Kawai, Hiroki Kato, Masayuki Kanematsu, Shimpei Kawaguchi, Toshihisa Kojima, Tatsuro Furui, Ken-Ichirou Morishige, Masayuki Matsuo
BACKGROUND: The usefulness of T2*-weighted (T2*W) imaging for the detection of adnexal torsion has yet to be determined. PURPOSE: To assess the usefulness of T2*W imaging for detecting and differentiating adnexal torsion. MATERIAL AND METHODS: Eight patients with eight ovaries with torsion and 44 patients with 72 ovaries without torsion were included in this study. All patients underwent 1.5-T magnetic resonance imaging (MRI) including T2*W images...
June 2016: Acta Radiologica Open
Silanath Terpenning, Loren H Ketai, Shawn D Teague, Stacy M Rissing
BACKGROUND: Atrial fibrillation (AF) may be the cause or sequela of left atrial abnormalities and variants. PURPOSE: To determine the prevalence of left atrial (LA) abnormalities in AF patients compared to normal sinus rhythm (NSR) patients. MATERIAL AND METHODS: We retrospectively reviewed 281 cardiac CT examinations from 2010 to 2012, excluding patients with prior pulmonary vein ablation, known coronary artery disease, prior coronary stent placement, or coronary artery bypass grafts...
June 2016: Acta Radiologica Open
Eiji Matsusue, Yoshio Fujihara, Kazunori Maeda, Masaru Okamoto, Atsushi Yanagitani, Kiwamu Tanaka, Kazuhiko Nakamura, Toshihide Ogawa
A rare complication of acute or chronic pancreatitis is the formation of a mediastinal pancreatic pseudocyst (MPP), which is caused by tracking of pancreatic fluids through anatomical openings of the diaphragm into the mediastinum. Herein, we report the imaging characteristics of three cases of this condition. Our results revealed three features in common: (i) the connection between the mediastinum and the pancreatic cystic lesion; (ii) the presence of pleural effusions; and (iii) imaging findings consistent with chronic pancreatitis, such as pancreatic atrophy and calcifications and dilatation and/or stricture of main pancreatic duct (MPD)...
June 2016: Acta Radiologica Open
Eiji Matsusue, Yoshio Fujihara, Yutaka Suto, Shotaro Takahashi, Kenichiro Tanaka, Hiroyuki Nakayasu, Kazuhiko Nakamura, Toshihide Ogawa
Neuromyelitis optica (NMO) is characterized by attacks of optic neuritis and longitudinally extensive transverse myelitis. Cases positive for aquaporin 4 antibodies are classified to NMO spectrum disorder (NMOSD) which includes cases with optic neuritis, transverse myelitis, or with brain lesions typical of NMO. Our three cases with NMO/NMOSD revealed five imaging features: (i) extensive transverse cord lesions, extending more than three vertebral segments, partially persisting as cavitation; (ii) periependymal lesions; (iii) lesions of the corticospinal tracts; (iv) extensive and confluent hemispheric white matter lesions reflecting vasogenic edema and partially involving the cerebral cortices and basal ganglia; and (v) two patterns of serial hemispheric white matter lesions: one is cavitation and another is partial regression or disappearance...
May 2016: Acta Radiologica Open
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