Because tuberculous (TB) involvement of mediastinal lymph nodes (LN) could cause false positive results in nodal staging of lung cancer, we examined the accuracy of nodal staging in lung cancer patients with radiographic sequelae of healed TB. A total of 54 lung cancer patients with radiographic TB sequelae in the ...

Several imaging modalities are commonly performed during work-up of intraductal papillary mucinous neoplasm (IPMN), but guidelines do not suggest any one technique. The aim of this study was to evaluate tumour and duct measurements by computed tomography (CT) and endoscopic ultrasound (EUS) and their ability to predict high-grade dysplasia (HGD) ...

To asses the value of computed tomography (CT)-perfusion in the detection of residual hepatocellular carcinoma (HCC) vascularization after transarterial chemoembolization (TACE). Thirty-two consecutive patients were prospectively included in this study. All patients had liver cirrhosis and a confirmed HCC lesion which was treated with TACE. One month after treatment, perfusion ...

To investigate the differences in the extracranial venous system in patients with multiple sclerosis (MS) and healthy control (HC) subjects by using magnetic resonance (MR) venography. This HIPAA-compliant, prospective study was approved by the local institutional review board, and all participants gave informed consent. Fifty-seven patients, 41 (72%) with relapsing-remitting ...

OBJECTIVE: To prove that 1.0 M gadobutrol provides superior contrast enhancement in suspicion of osteomyelitis of the feet compared with 0.5 M gadoterate. METHODS: MRI of feet was performed on 2 separate occasions. Independent injections of 1.0 M gadobutrol and 0.5 M gadoterate at doses of 0.1 mmol Gd/kg body weight were administered per patient. ...

Abstract Background. Cervical carcinoma is the only gynecological tumor still being staged mainly by clinical examination and only a limited use of diagnostic radiology. Cross sectional imaging is increasingly used as an aid in the staging procedure. We wanted to assess the impact of magnetic resonance imaging (MRI) in addition ...

Background: Hemiplegic migraine (HM) is a rare variety of migraine with aura, characterized by motor deficits during the aura, often beginning in childhood. The hemiplegic attacks can be severe and prolonged but the prognosis is usually good. Data on neuroimaging, including diffusion-weighted imaging (DWI) and spectroscopy, during prolonged attacks of ...

CT angiography is the imaging modality of choice for the pre- and postsurgical evaluation of patients with pathologies of the thoracic aorta. The purpose of this review is to familiarize the reader with the technical principle, recent technical developments and requirements for specific examination protocols and image interpretation, and to ...

Cardiovascular magnetic resonance imaging (CMR) plays an increasing role in the assessment of patients with various cardiovascular disorders. Given its enhanced spatial resolution, improved tissue characterization, and lack of ionizing radiation, it has become the test of choice in the evaluation of patients with new-onset cardiomyopathy of unknown etiology. In ...

OBJECTIVE: To evaluate the feasibility, safety, and efficacy of embolization of internal iliac artery aneurysm (IIAA) after percutaneous direct puncture under (cone-beam) computed tomography (CT) guidance. METHODS: A retrospective case series of three patients, in whom IIAA not accessible by way of the transarterial route, was reviewed. CT-guided puncture of ...

Correct mediastinal staging is a cornerstone in the treatment of patients with non-small cell lung cancer. A large range of methods is available for this purpose, making the process of adequate staging complex. The objective of this study was to describe faults and benefits of positron emission tomography (PET)-CT in ...

Quantitative T(1) mapping of delayed gadolinium-enhanced cardiac magnetic resonance imaging has shown promise in identifying diffuse myocardial fibrosis. Despite careful control of magnetic resonance imaging parameters, comparison of T(1) times between different patients may be problematic because of patient specific factors such as gadolinium dose, differing glomerular filtration rates, and ...

PURPOSE: Chyle leaks are rare entities infrequently encountered by most physicians. However, large centers providing advanced surgical care are inevitably confronted with chyle leaks as a complication of surgery, an extension of disease, or as a primary disorder. Regardless of the etiology, proper diagnosis and localization are paramount in the ...

Quantitative T(1) mapping of delayed gadolinium-enhanced cardiac magnetic resonance imaging has shown promise in identifying diffuse myocardial fibrosis. Despite careful control of magnetic resonance imaging parameters, comparison of T(1) times between different patients may be problematic because of patient specific factors such as gadolinium dose, differing glomerular filtration rates, and ...

Purpose: To assess whether carotid plaque hemorrhage depicted with magnetic resonance (MR) imaging was associated with thromboembolic activity as assessed with transcranial Doppler imaging. Materials and Methods: The local research ethics committee approved the study, and all patients gave informed written consent. Between April 2005 and December 2006, patients with ...

Appraisal of the orientation of implants in THA dislocations currently is based on imaging done with the patient in the supine position. However, dislocation occurs in standing or sitting positions. Whether measured anteversion differs in images projected in the position of dislocation is unclear. We compared measured acetabular cup orientations ...

Prospective cohort study. To examine the utility of 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET) to diagnose pyogenic spondylitis in patients showing Modic change. Vertebral bone marrow infection may appear as Modic type 1 signal on magnetic resonance imaging, so it is difficult to distinguish between common Modic change and infection. In the ...

Hemorrhagic cholecystitis with subsequent gallbladder rupture and torrential bleeding is a very rare but life-threatening complication of acute biliary tract diseases. Its clinical presentation may be dubious and therefore Computed Tomography (CT) imaging plays a crucial role in a prompt and accurate diagnosis. We present a case of a 64 ...

Intraosseous venous access can be life-saving in trauma patients when traditional methods for obtaining venous access are difficult or impossible. Because many blunt trauma patients require expeditious evaluation by computed tomography (CT) scans with intravenous contrast, it is important to evaluate whether intraosseous catheters can be used for administering CT ...

BACKGROUND: Comparison of the diagnostic validity of positron emission tomography (PET) alone with integrated PET and CT (PET/CT) in the search for occult primary tumors in patients with cancer of unknown primary (CUP) site in the head and neck. METHODS: Thirty-nine consecutive patients with clinical CUP were investigated with PET ...

BACKGROUND: Calcitonin (CT) is a sensitive marker for evaluation of medullary thyroid cancer (MTC). However, CT measurement can vary with assay- and nonassay-dependent factors, and procalcitonin (PCT) measurement has been proposed for evaluating questionable increases in CT. METHODS: We tested 2 fully automated CT assays (Immulite [IL] and Liaison [LIA]) ...

This study aims to characterize patients with early rheumatoid arthritis (RA) based on different definitions of early RA (disease duration, fulfillment of the American College of Rheumatology (ACR) criteria), and to determine whether these different definitions affect magnetic resonance imaging (MRI) findings of the hand. A cohort of 58 patients ...

OBJECTIVE: To evaluate the feasibility, diagnostic accuracy, and radiation dose of CT coronary angiography (CTCA) in patients with atrial fibrillation (AF) using 320-detector CT. METHODS: Thirty-seven patients with persistent AF and suspected coronary artery disease (CAD) were enrolled. All patients underwent both 320-detector CTCA and conventional coronary angiography (CCA). CT ...

To compare image quality and radiation dose estimates for coronary computed tomography angiography (CCTA) obtained with a prospectively gated transaxial (PGT) CT technique and a retrospectively gated helical (RGH) CT technique using a 256-slice multidetector CT (MDCT) scanner and establish an upper limit of heart rate to achieve reliable diagnostic ...

OBJECTIVE: This study was to evaluate diagnostic performance of unenhanced electrocardiography-gated fast spin echo based MRA with variable flip angle on 3.0 T for assessment of calf arteries in patients with peripheral arterial occlusive disease (PAOD). METHODS: 64 patients underwent unenhanced MRA (UE), time-resolved contrast-enhanced MRA of the calf and bolus-chase ...

With antiangiogenic agents, tumor shrinkage may be absent, despite survival benefit. The present study assessed the predictive value of molecular imaging for the identification of survival benefit during antiangiogenic treatment with bevacizumab and erlotinib in patients with advanced non-small cell lung cancer. Patients were evaluated using an imaging protocol including ...

Radioembolization with 90Y microspheres represents a novel transarterial radiation treatment for liver tumors. The purpose of this pilot study was to evaluate the findings of postimplantation PET/CT of 90Y glass microspheres. Three patients with hepatocellular carcinoma and 2 patients with liver metastases (1 neuroendocrine, 1 colorectal) underwent PET/CT after radioembolization. ...

Acute vestibular syndrome may be due to vestibular neuritis (VN) or posterior circulation strokes. Bedside ocular motor testing performed by experts is superior to early MRI in excluding strokes. We sought to demonstrate that differentiation of strokes from VN in our stroke unit is reliable. During a prospective study at ...

Noninvasive evaluation of hepatic tumor response is necessary to improve the survival rate and quality of life of cancer patients. Among radiologic imaging modalities, MRI plays a significant role in the management of patients with hepatic tumor and is crucial for diagnosis, treatment planning and assessment of response or recurrence, ...

Malignant pleural mesothelioma (MPM) is a neoplasm that grows circumferentially along the pleura. The tumor and concurrent pleural effusion may reduce lung function by restricting or preventing lung expansion. The purpose of this study was to provide objective evidence that pleurectomy/decortication (P/D) allows trapped lung to reexpand, quantify the reexpansion ...

ABSTRACTRationale: Respiratory tract exacerbation rate (RTE-R) is a key clinical efficacy endpoint in cystic fibrosis (CF) trials. Chest computed tomography (CT) holds great potential as a surrogate endpoint. Evidence supporting the ability of CT scores to predict RTE-R is an important step in validating CT as a surrogate endpoint. OBJECTIVES: ...

Background: Use of quantitative magnetic resonance imaging (MRI) metrics as surrogates for clinical outcomes in multiple sclerosis (MS) trials is controversial. Objectives: We sought to validate, at the individual-patient level, the number of MRI active lesions, as a surrogate marker for relapses in MS. Methods: Individual-patient data from two large, ...

OBJECTIVES.: The aim of this study was to evaluate the computerized tomography (CT) features of keratocystic odontogenic tumors (KCOTs). Another aim was to determine the recurrence rate of KCOTs during a mean follow-up of 4.7 years. STUDY DESIGN.: The CT features of histopathologically verified KCOTs in 46 patients were reviewed. ...

The clinical value of imaging is well established for the follow-up of many lymphoid malignancies but not for chronic lymphocytic leukemia (CLL). A meta-analysis was performed with the dataset of 3 German CLL Study Group phase 3 trials (CLL4, CLL5, and CLL8) that included 1372 patients receiving first-line therapy for ...

A recent approach for the management of chronic obstructive pulmonary disease (COPD) is the measurement of systemic biomarkers. The aim of this study was to evaluate the usefulness of mid regional pro-atrial natriuretic peptide (MR-proANP) to predict short and long term prognosis. We included 318 COPD patients: 46 in a ...

The purpose of this study was to evaluate the morphology and composition of atherosclerotic coronary plaques in patients with stable coronary artery disease by 64-row multidetector computed tomography (CT) angiography. A total of 56 patients were divided into an ischemia-related (n = 31) and a nonischemia-related lesion group (n = 25) based on myocardial ...

Blunt traumatic aortic injury (TAI) refers to a spectrum of pathology that ranges from intimal tears to aortic rupture. Computed tomography angiography (CTA) has been widely used as a diagnostic tool in this setting. Additional imaging is required when CTA studies are equivocal. The purpose of this study is to ...

The term "misty mesentery" indicates a pathological increase in mesenteric fat attenuation at computed tomography (CT). It is frequently observed on multidetector CT (MDCT) scans performed during daily clinical practice and may be caused by various pathological conditions, including oedema, inflammation, haemorrhage, neoplastic infiltration or sclerosing mesenteritis. In patients suffering ...

Purpose: To compare the accuracy of magnetic resonance (MR) imaging with that of the current clinical standard of endoscopy and endoscopic biopsy, to determine whether MR imaging depicts subclinical cancers missed at endoscopy and endoscopic biopsy, and to determine whether MR imaging can identify patients without nasopharyngeal carcinoma (NPC) who ...

Serial computed tomography (CT) scanning is routinely used to follow up endovascular exclusion of abdominal aortic aneurysms (AAAs). Nonvascular diseases can be identified, and these exams include images of the lung bases, which can provide information that leads to the diagnosis of pulmonary neoplasms. This study was conducted to determine ...

To investigate the performance of an open MRI system at its conceptual limits by examining excessively obese patients who otherwise could not receive adequate imaging examinations. Twenty-six excessively obese patients (BMI ≥ 35, average age 46) where CT, standard MR or ultrasound examinations were not possible or not conclusive were referred to ...

To evaluate the rate of positive, negative, and indeterminate results and the agreement between initial and expert readings for lung scintigraphy and computed tomographic (CT) angiography performed in patients suspected of having pulmonary embolism (PE) during pregnancy. Institutional review board approval was obtained. The authors retrospectively analyzed the images from ...

We investigated the evaluability of left atrial appendix by dual source coronary CT angiography and analyzed morphologic features. We included 106 consecutive patients who underwent coronary CT angiography for various indications. Technical parameters were slice thickness 0.6mm, reconstruction interval 0.3mm, gantry rotation time 165ms. Images were reconstructed from 10% to ...

To compare the use of endorectal plus phased-array coils with use of phased-array coil alone with respect to the accuracy of magnetic resonance imaging for detecting mesorectal involvement of rectal cancer. Retrospective study. A tertiary referral centre in Hong Kong. Ethnic Chinese patients with rectal adenocarcinoma who underwent staging magnetic ...

We present the case of a patient with the rare triad of Von Recklinghausen's disease associated with a somatostatinoma and a gastrointestinal stromal tumour (GIST). The patient had recurrent jaundice, the typical somatostatinoma syndrome, positive MR imaging but negative ⁶⁸Ga-DOTATOC PET scanning in a histopathology-proven somatostatinoma tumour.

ObjectiveTo evaluate the clinical value of retrospective electrocardiogram (ECG) -editing technique in dual-source computed tomography (CT) coronary angiography in patients with arrhythmia. MethodsTotally 73 patients with arrhythmia during dual-source CT coronary angiography were included into this study. A retrospective gating technique and ECG-editing technique (Insert Sync; Disable Sync; Delete Sync; ...

The incorporation of positron emission tomography-computed tomography (PET-CT) into oncological imaging has expanded rapidly since the hybrid scanners were introduced approximately 10 years ago. PET-CT is becoming the standard of practice for the imaging diagnosis and staging of most cancers. Since its introduction, hardware-registered PET and CT images produced by ...

ObjectiveTo evaluate image quality (IQ) and radiation exposure of coronary computed tomographic angiography (CTA) with prospectively electrocardiographic (ECG) triggered high-pitch spiral acquisition using dual source CT. MethodsTotally 75 consecutive patients with a stable heart rate (HR) ≤65 bpm underwent coronary CTA. patients were divided into two groups according to their ...

To assess performance of CT finding in differentiation of perforated from non-perforated appendicitis in Siriraj hospital, Bangkok, Thailand and evaluate accuracy of each finding by using multidetector row computer tomography (MDCT). Between June 2006 and May 2009, all adult patients (age more than 15 years) who had a diagnosis of ...

Our objective was to show that a chest X-ray (CXR) and an abdominal computed tomography (CT) scan are sufficient to identify most clinically significant thoracic injuries in trauma patients, rendering the thoracic CT scan useful in only a subset of patients. A retrospective study identified thoracic injuries in 374 trauma ...