Nonstenotic carotid artery plaques on computed tomography angiography in embolic stroke of undetermined source.

This study aims to evaluate the role of <50% stenotic cervical carotid artery plaques in embolic stroke of undetermined source (ESUS), focusing on plaque characteristics in symptomatic versus asymptomatic carotid arteries (contralateral). In this cross-sectional observational study, 81 patients who met the diagnostic criteria for ESUS and underwent were retrospectively analyzed. Carotid plaques causing <50% stenosis were examined, noting features such as plaque thickness, degree of luminal stenosis, irregularity, ulceration, calcification, and hypodensity.

Efficacy of diffusion weighted imaging in sacroiliac joint MRI in children.

Objective: Because of the immature bone marrow signal in children, assessment of the sacroiliac joint is more difficult than in adults. Aim of this study is to evaluate the efficacy of diffusion-weighted imaging (DWI) in sacroiliac joint magnetic resonance imaging (MRI).

Methods: Sacroiliac joint MRI, including DWI sequences, were evaluated by two pediatric radiologists in 54 patients with sacroiliitis and 85 completely normal controls.

PROPELLER diffusion weighted imaging for diagnosis of cholesteatoma in comparison with surgical and histopathological results: emphasis on false positivity and false negativity.

Purpose: To investigate the role of non-echo planar diffusion weighted imaging (DWI) using "periodically rotated overlapping parallel lines with enhanced reconstruction" (PROPELLER) sequence for the diagnosis of cholesteatoma compared to surgical and histopathological results in an attempt to determine the factors causing false negative and false positive diagnoses.

Methods: Patients who had PROPELLER DWI before ear surgery were retrospectively reviewed. The presence of a lesion with diffusion restriction on PROPELLER DWI was accepted as positive for cholesteatoma, and the results were compared to the intraoperative and histopathological findings.

Chest computed tomography findings of 1271 patients with COVID-19 pneumonia and classifications with different age groups: a descriptive study from Istanbul, Turkey.

Objective: The objectives of this study were to describe lung computed tomography findings of patients with COVID-19 diagnosed by real-time reverse transcription polymerase chain reaction test, investigate whether the findings differ regarding age and gender, and evaluate the diagnostic performance of chest computed tomography based on the duration of symptoms at the time of presentation to the hospital.

Methods: From March 11 to May 11, 2020, 1271 consecutive patients (733 males and 538 females) were included in this retrospective, cross-sectional study. Based on age, patients were divided into five separate subgroups.

Evaluation of radiological findings in pediatric patients with COVID-19 in Turkey.

Objective: The objective of the study was to describe the findings of pediatric patients diagnosed with COVID-19 in computed tomography (CT) and chest X-ray (CXR) images. Therefore, the aim of this study is to show protecting the children from radiation as much as possible while guiding the diagnosis.

Methods: Between March and June 2020, 148 pediatric patients examined who underwent CT due to suspicion of COVID-19.

Does Gadoterate Meglumine Cause Gadolinium Retention in the Brain of Children? A Case-Control Study.

Background: Accumulation of macrocyclic gadolinium agents in children's brains remain to be determined.

Purpose: To demonstrate whether there is an intracranial macrocyclic gadolinium deposition after multiple contrast-enhanced MRI with gadoterate meglumine in a pediatric population.

Study Type: Retrospective case-control.

Role of Interface Sign and Diffusion-Weighted Magnetic Resonance Imaging in Differential Diagnosis of Exophytic Renal Masses.

Purpose: We aimed to investigate the role of interfaces of exophytic solid and cystic renal masses on magnetic resonance imaging (MRI) and the added value of diffusion-weighted imaging in differentiating benign from malignant lesions.

Methods: The Institutional Review Board approved this retrospective study, and informed consent was waived. A total of 265 patients (109 [41%] women and 156 [59%] men) with a mean age of 57 ± 12 (standard deviation) years were enrolled in this study.

Misleading findings of liver-specific MR contrast agent for radiological diagnosis of cysto-biliary communication in hydatid cysts.

Objective: To investigate the effectiveness of gadoxetic acid-enhanced magnetic resonance cholangiopancreatography (CE-MRCP) and T2-weighted half-Fourier acquisition single-shot turbo spin-echo (T2W HASTE) sequences for diagnosis of cysto-biliary communication in hydatid cysts compared to surgical results.

Methods: Preoperative abdominal magnetic resonance imaging examinations of patients who underwent surgery for hepatic hydatid cysts were reviewed by two radiologists retrospectively. A total of 45 patients with hydatid cysts were included.

Bone Deformities as a Complication of Giant Thoracic Aortic Aneurysm.

The contained rupture of thoracic aortic aneurysm and related bone deformities is a rare condition. The diagnosis is critical due to potential and fatal complications. Radiologic evaluation is required to show the location, extension, and complications.

Percutaneous cholecystostomy: A curative treatment modality forelderly and high ASA score acute cholecystitis patients.

Background: Acute cholecystitis (AC) is a common emergency seen by general surgeons. Optimal treatment is laparoscopic cholecystectomy (LC); however, in cases where surgery cannot be performed due to high risk of morbidity and mortality, such as in elderly patients with comorbid diseases, other treatment modalities may be used. Percutaneous cholecystostomy (PC) is one alternative method to treat AC.

The association of patellofemoral joint morphology with chondromalacia patella: a quantitative MRI analysis.

The relationship of patellofemoral congruency with chondromalacia patellae (CP) was retrospectively evaluated. Lateral patellar tilt angle (LPTA), sulcus angle (SA), trochlear depth (TD), and patella angle (PA) were measured at 301 knee magnetic resonance images and compared between groups with and without CP. In the CP group, LPTA and TD were significantly low (P<.

The value of ultrasound elastography in differentiation of malignancy in thyroid nodules.

We aimed to determine the value of ultrasound elastography (US-E) using carotid artery pulsation in differentiation of malignant and benign thyroid nodules. One hundred ten nodules were evaluated by US-E, and stiffness scores were compared to biopsy results. When cutoff for malignancy was determined as score 4, sensitivity, specificity, positive predictive value, and negative predictive value were 100%, 95%, 40%, and 100%, respectively.

Thyroid functions after contrast agent administration for coronary angiography: a prospective observational study in euthyroid patients.

Objective: This study aims to investigate long-term effects of iodinated radiographic contrast media used for coronary angiography (CAG) on the thyroid function in euthyroid patients.

Methods: In a prospective observational cohort study, nonionic iodinated contrast material was electively used in 101 patients for coronary angiography. The patients were recruited without age restrictions and, at baseline, all had normal levels of free triiodothyronine (FT3), free thyroxine (FT4) and thyrotropin (TSH).

Pulmonary multislice computed tomography findings in acute aortic dissection.

Objective: To document the type and incidence of pulmonary multislice computed tomography (CT) findings at presentation in patients with acute aortic dissection.

Materials And Methods: Multidetector CT scans of 36 patients with a diagnosis of acute aortic dissection or intramural hematoma were retrospectively reviewed.

Results: Pleural effusion, dependent stasis, mosaic attenuation, interlobular septal thickening, thickening of the peribronchovascular interstitium, vascular enlargement, compression atelectasis were common findings.

Anomalous left pulmonary artery without sling formation.

A case of aberrant left pulmonary artery originating from the right pulmonary artery resembling pulmonary artery sling malformation, but without true sling formation, is presented. Anomalous left pulmonary artery was accompanied with long-segment proximal tracheal stenosis and other congenital malformations typically associated with PAS complex. The anomalous pulmonary artery passed anterior to the trachea; therefore, no true sling was formed.

Stent-graft placement for urgent treatment or prevention of bleeding.

Background: Stent-graft treatment of the patients with ongoing bleeding may be beneficial in specific situations, especially when preservation of blood flow to the distant organs is important.

Purpose: To present the results of stent-graft placement for urgent treatment or prevention of the bleeding.

Material And Methods: Stent-graft placement was performed urgently for the treatment of active bleeding and/or pseudoaneurysm/aneurysm in 17 patients.

Polysplenia/heterotaxy syndrome associated with aortic coarctation and multiple venous anomalies: multidetector computed tomography findings.

Polysplenia/heterotaxy syndrome is a rare condition involving multiple gastrointestinal, vascular, and cardiac malformations. We present a previously unreported association of aortic coarctation, double superior vena cava, a left-hand side inferior vena cava with hemiazygos vein continuation and a right retroaortic renal vein with polysplenia/heterotaxy syndrome. Multidetector computed tomography with multiplanar reconstruction images were useful in the detection of these abnormalities.

The Günther-Tulip retrievable filter: a method for assessing tilting of the filter.

Purpose: Tilting of the Günther-Tulip filter may be responsible for failure or difficulty to retrieve. Assessment of the filter tilt can be difficult when only AP imaging is available. This study is performed in vitro to develop a simple method to assess the Günther-Tulip filter for tilting.

Interventional radiological management of prehepatic obstruction of [corrected] the splanchnic venous system.

Purpose: The purpose of this study was to retrospectively evaluate interventional radiological management of patients with symptomatic portal hypertension secondary to obstruction of splanchnic veins.

Material And Methods: Twenty-four patients, 15 males and 9 females, 0.75 to 79 years old (mean, 36.

Transjugular intrahepatic portosystemic shunt prior to cardiac surgery with cardiopulmonary bypass in patients with cirrhosis and portal hypertension.

Because of the increased complications associated with cardiac surgery in patients with cirrhosis and portal hypertension, various preoperative preparations have been utilised. In order to reduce the bleeding risk by decompressing portosystemic collaterals and to correct the fluid shift, we performed transjugular intrahepatic portosystemic shunt (TIPS) in two patients with cirrhosis and portal hypertension prior to major cardiac surgery with cardiopulmonary bypass. Both patients had satisfactory surgical outcome with no bleeding complications.

Endovascular management of acute enteric bleeding from pancreas transplant.

Arterioenteric fistula is a rare but serious complication of enteric drained pancreas transplant, which may lead to massive gastrointestinal bleeding. We present 3 patients with failed enteric drained pancreas transplants and massive gastrointestinal bleeding secondary to arterioenteric fistula. One patient was treated by embolization and the 2 others by stent graft placement.

Dynamic contrast-enhanced MRI in the differentiation of posttreatment fibrosis from recurrent carcinoma of the head and neck.

Objective: The aim of this study was to investigate the value of dynamic contrast-enhanced magnetic resonance imaging (MRI) in the differentiation of posttreatment fibrosis from recurrent carcinoma, by comparing the dynamic contrast-enhancement characteristics of the lesions.

Materials And Methods: Twenty-six patients with previously treated carcinoma of the head and neck are studied by conventional and dynamic contrast-enhanced MRI at least 6 months after treatment by radiotherapy and/or surgery. Patients are divided into tumor-positive or -negative groups according to the radiological and clinical follow-up and biopsy.

[Evaluation of autologous fat volume with magnetic resonance imaging following vocal cord injection].

Objectives: The aim of this study was to measure the change in the volume of the autologous fat used for the treatment of glottic insufficiency caused by recurrent laryngeal nerve palsy.

Patients And Methods: Six patients who were treated by autologous fat injection for the treatment of glottic closure deficiency were included in the study. MRI was performed one week, and 1, 3, 6, and 12 months after the injection.