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Acta Radiologica Open

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https://www.readbyqxmd.com/read/28321332/cervical-vertebral-injuries-associated-with-the-ossification-of-the-posterior-longitudinal-ligament-imaging-features
#1
Tetsuo Nakayama, Shigeru Ehara
BACKGROUND: Spinal injuries associated with ossification of the posterior longitudinal ligament (OPLL) have been characterized. However, the imaging features of traumatic cervical spine fractures in patients with OPLL have not been assessed adequately. PURPOSE: To characterize the patterns of traumatic cervical spine fractures associated with different types of OPLL. MATERIAL AND METHODS: We retrospectively analyzed the patterns of fractures resulting from cervical spine injury in patients with OPLL of different types and assessed the fracture patterns in patients with ankylosed segments...
March 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28321331/ct-patterns-of-organizing-pneumonia-in-patients-treated-with-vegf-mtor-inhibitors-for-metastatic-renal-cell-cancer-an-observational-study
#2
Sabine Dettmer, Viktor Grünwald, Thomas Fuehner, Arnold Ganser, Frank Wacker, Philipp Ivanyi, Thomas Rodt
BACKGROUND: Targeted therapies are the standard treatment in patients with metastatic renal cell carcinoma (mRCC) and are known to cause adverse pulmonary events. Organizing pneumonia (OP) with its various manifestations in computed tomography (CT) has therefore lately received more attention. PURPOSE: To describe the spectrum of CT patterns of OP in patients with mRCC receiving targeted therapies. MATERIAL AND METHODS: Seventeen patients with known therapy-related OP were analyzed retrospectively by two blinded radiologists in consensus...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28321330/ct-venography-after-knee-replacement-surgery-comparison-of-dual-energy-ct-based-monochromatic-imaging-and-single-energy-metal-artifact-reduction-techniques-on-a-320-row-ct-scanner
#3
Masafumi Kidoh, Daisuke Utsunomiya, Seitaro Oda, Takeshi Nakaura, Yoshinori Funama, Hideaki Yuki, Kenichiro Hirata, Masahiro Hatemura, Tomohiro Namimoto, Yasuyuki Yamashita
BACKGROUND: An optimal metal artifact reduction (MAR) technique is needed for a reliable and accurate image-based diagnosis. PURPOSE: Using a 320-row scanner, we compared the dual-energy computed tomography (CT)-based monochromatic and the single-energy metal artifact reduction (SEMAR) techniques for CT venography (CTV) to identify the better imaging method for diagnosing deep vein thrombosis (DVT) in patients who had undergone knee replacement surgery. MATERIAL AND METHODS: Twenty-three consecutive patients with suspected DVT after unilateral knee replacement surgery underwent dual-energy CT (135/80 kVp)...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28203389/mr-appearance-of-the-temporal-evolution-and-resolution-of-spontaneous-osteonecrosis-of-the-knee-a-case-report
#4
Mats Geijer, Jan Jureus, Mari Hanni, Adel Shalabi
Spontaneous osteonecrosis of the knee (SONK) is a feared condition of unknown cause, in its classic form appearing in the medial femoral condyle in middle-aged or elderly subjects. Diagnosis with radiography is notoriously difficult with a long latency before typical changes appear. Magnetic resonance imaging (MRI) is regarded as a diagnostic tool with the possibility to give an earlier diagnosis with improved chances for treatment. However, also with MRI there may be an initial diagnostic blind spot before typical changes appear...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28210496/the-additional-utility-of-apparent-diffusion-coefficient-values-of-clear-cell-renal-cell-carcinoma-for-predicting-metastasis-during-clinical-staging
#5
Rika Yoshida, Takeshi Yoshizako, Araki Hisatoshi, Hiroshi Mori, Yukihisa Tamaki, Noriyoshi Ishikawa, Hajime Kitagaki
BACKGROUND: The apparent diffusion coefficient (ADC) value is known to be an indicator of tumor activity. The ADC value of high-grade clear-cell renal cell carcinoma (RCC) is significantly lower than that of low-grade clear-cell RCC. PURPOSE: To investigate the utility of ADC values of clear-cell RCC by comparing ADC values between groups with T1a RCC (tumor size ≤ 4 cm) without metastasis and the group with metastasis. MATERIAL AND METHODS: A retrospective review was performed on 51 patients with 51 RCCs who underwent 1...
January 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28210495/reproducibility-of-pulmonary-blood-flow-measurements-by-phase-contrast-mri-using-different-1-5-t-mr-scanners-at-two-institutions
#6
Rin Iraha, Nanae Tsuchiya, Tsuneo Yamashiro, Tae Iwasawa, Sadayuki Murayama
BACKGROUND: Magnetic resonance imaging (MRI) can be beneficial for diagnosis of disease by offering quantitative information. However, reproducibility can be a major problem when there is a numerical threshold in multi-institution, multi-vendor situations. PURPOSE: To measure pulmonary blood flow with phase-contrast (PC) imaging using two different MR scanners (1.5 T) at different institutions in the same participants and to examine the reproducibility of the measurements...
January 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28286672/is-ultrasonography-useful-for-population-studies-on-schistosomiasis-mansoni-an-evaluation-based-on-a-survey-on-a-population-from-kome-island-tanzania
#7
Mats Sl Asztely, Bo Eriksson, Reverianus M Gabone, Lars-Åke Nilsson
BACKGROUND: Observation of characteristic alterations at liver ultrasonography in clinical schistosomiasis mansoni cases has initiated utilization of this examination method in population surveys in areas where this disease is endemic. PURPOSE: To present results of liver ultrasonography and their relation to epidemiological data of a population in an area endemic for S. mansoni, to estimate the precision of classification of periportal anatomy changes known as periportal fibrosis (PPF), and to evaluate the relevance of ultrasonography in epidemiological studies on S...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/28286671/low-dose-ct-pulmonary-angiography-on-a-15-year-old-ct-scanner-a-feasibility-study
#8
Moritz Kaup, Tatjana Gruber-Rouh, Jan E Scholtz, Moritz H Albrecht, Andreas Bucher, Claudia Frellesen, Thomas J Vogl, Martin Beeres
BACKGROUND: Computed tomography (CT) low-dose (LD) imaging is used to lower radiation exposure, especially in vascular imaging; in current literature, this is mostly on latest generation high-end CT systems. PURPOSE: To evaluate the effects of reduced tube current on objective and subjective image quality of a 15-year-old 16-slice CT system for pulmonary angiography (CTPA). MATERIAL AND METHODS: CTPA scans from 60 prospectively randomized patients (28 men, 32 women) were examined in this study on a 15-year-old 16-slice CT scanner system...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27994882/jugular-venous-reflux-on-magnetic-resonance-angiography-and-radionuclide-venography
#9
Yasutaka Fushimi, Tomohisa Okada, Sachi Okuchi, Akira Yamamoto, Mitsunori Kanagaki, Koji Fujimoto, Kaori Togashi
BACKGROUND: The relationship between the signal from retrograde venous flow on magnetic resonance angiography (MRA) and retrograde upward flow from the left brachiocephalic vein has not been explored. PURPOSE: To reveal the frequency of jugular venous reflux using MRA and nuclear venography in patients being evaluated for cerebral volume and blood flow. MATERIAL AND METHODS: A total of 229 patients with cognitive disturbance who had undergone brain magnetic resonance imaging (MRI) and single-photon emission computed tomography (SPECT) on the same day to evaluate cerebral blood flow were evaluated...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27994881/endovascular-treatment-of-spontaneous-isolated-abdominal-aortic-dissection
#10
Anna Maria Giribono, Doriana Ferrara, Flavia Spalla, Donatella Narese, Umberto Bracale, Felice Pecoraro, Renata Bracale, Luca Del Guercio, Umberto Marcello Bracale
Isolated abdominal aortic dissection is a rare clinical disease representing only 1.3% of all dissections. There are a few case series reported in the literature. The causes of this pathology can be spontaneous, iatrogenic, or traumatic. Most patients are asymptomatic and symptoms are usually abdominal or back pain, while claudication and lower limb ischemia are rare. Surgical and endovascular treatment are two valid options with acceptable results. We herein describe nine cases of symptomatic spontaneous isolated abdominal aortic dissection, out of which four successfully were treated with an endovascular approach between July 2003 and July 2013...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27994880/a-computer-assisted-systematic-quality-monitoring-method-for-cervical-hip-fracture-radiography
#11
Mats Geijer, Olof Laurin, Ragnar Johnsson, Sven Laurin
BACKGROUND: A thorough quality analysis of radiologic performance is cumbersome. Instead, the prevalence of missed cervical hip fractures might be used as a quality indicator. PURPOSE: To validate a computer-based quality study of cervical hip fracture radiography. MATERIAL AND METHODS: True and false negative and positive hip trauma radiography during 6 years was assessed manually. Patients with two or more radiologic hip examinations before surgery were selected by computer analysis of the databases...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27900204/preoperative-mr-staging-of-cervical-carcinoma-are-oblique-and-contrast-enhanced-sequences-necessary
#12
Susanne Fridsten, Ann-Cathrin Hellström, Kristina Hellman, Anders Sundin, Boel Söderén, Lennart Blomqvist
BACKGROUND: As the choice of treatment in patients with cervical carcinoma depends on cancer stage at diagnosis, accurate staging is essential. PURPOSE: To compare three different combinations of magnetic resonance (MR) sequences for preoperative staging. MATERIAL AND METHODS: Fifty-seven consecutive patients with biopsy proven cervical carcinoma underwent MR imaging (MRI) staging followed by primary surgical treatment. Thirty-two of 57 patients had had a cone biopsy prior to MRI...
November 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27900203/combined-hepatocellular-cholangiocarcinoma-with-stem-cell-features-cholangiolocellular-subtype-after-inferior-vena-cava-stent-placement-for-a-patient-with-budd-chiari-syndrome
#13
Makoto Sakane, Keigo Osuga, Takahiro Matsui, Hidetoshi Eguchi, Masatoshi Hori, Noriyuki Tomiyama
We report a case of combined hepatocellular-cholangiocarcinoma with stem cell features, cholangiolocellular subtype arising about 15 years after placement of an inferior vena cava stent for primary Budd-Chiari syndrome. Pre-surgical differentiation of the tumor from hepatocellular carcinoma was difficult because of elevated levels of alpha-fetoprotein and hypervascularity in the arterial phase. Histopathological examination revealed atypical cells forming ductal and alveolar structures showing a vague border with the surrounding liver...
November 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27900202/radiological-imaging-features-of-glioblastoma-with-oligodendroglioma-component-a-comparison-with-conventional-glioblastoma
#14
Masafumi Kanoto, Kazukuni Kirii, Yuuki Toyoguchi, Masashi Nishihara, Keita Sakurai, Kazuhiro Murayama, Tomoyuki Noguchi, Kenichiro Matsuda, Kaori Sakurada, Yukihiko Sonoda, Takaaki Hosoya
BACKGROUND: Glioblastoma with oligodendroglioma component (GBMO) is a subtype of conventional glioblastoma (cGBM), which is categorized as WHO grade IV. GBMO can be histopathologically distinguished from cGBM and the prognosis of GBMO is better than that of cGBM. However, no systematic review of GBMO imaging findings has been published to date. PURPOSE: To clarify the radiological imaging features of GBMO compared with those of cGBM. MATERIAL AND METHODS: The participants were 15 patients with GBMO and 32 patients with cGBM as a control group, all of whom were histopathologically diagnosed...
November 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27900201/the-diagnosis-and-treatment-of-rapunzel-syndrome
#15
Zhe Wang, Feng Cao, Diangang Liu, Yu Fang, Fei Li
Trichobezoars are hairballs or hair-like fibers formed by chewing and swallowing hair or any other indigestible materials. Trichobezoars usually form in the gastric body and are thus prepyloric. However, trichobezoars may rarely pass through the pylorus into the duodenum, jejunum, ileum, and even the colon, in a condition referred to as Rapunzel syndrome. Here, we present a case of a 13-year-old girl with this rare syndrome and discuss the diagnosis and treatment of the disease.
November 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27867536/life-threatening-mrsa-sepsis-with-bilateral-pneumonia-osteomyelitis-and-septic-arthritis-of-the-knee-in-a-previously-healthy-13-year-old-boy-a-case-report
#16
Nina Hardgrib, Michala Wang, Anne Grethe Jurik, Klaus K Petersen
The incidence and severity of methicillin resistant Staphylococcus aureus (MRSA) infections are increasing and cause high mortality and morbidity. We describe the first pediatric case in Scandinavia with Panton-Valentine leucocidin (PVL) positive MRSA septicemia who developed bilateral pneumonia, arthritis of the knee, and osteomyelitis of the tibia. Radiological investigation and interpretation directed the treatment, especially the surgical debridement, and combined with clinical and biochemical findings lead to close interdisciplinary treatment with frequent surgical interventions and antimicrobial combination therapy...
October 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27733937/a-rare-case-of-pancreatic-endometriosis-in-a-postmenopausal-woman-and-review-of-the-literature
#17
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
https://www.readbyqxmd.com/read/27708860/whole-body-mri-for-full-assessment-and-characterization-of-diffuse-inflammatory-myopathy
#18
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
https://www.readbyqxmd.com/read/27651931/magnetization-transfer-imaging-reveals-geniculocalcarine-and-striate-area-degeneration-in-primary-glaucoma-a-preliminary-study
#19
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
https://www.readbyqxmd.com/read/27651930/combination-therapy-using-pse-and-tio-ameliorates-hepatic-encephalopathy-due-to-intrahepatic-portosystemic-venous-shunt-in-idiopathic-portal-hypertension
#20
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
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