abstract：OBJECTIVES AND RATIONALE:Medulloblastoma/primitive neuroectodermal tumor (MB/PNET) is the most common malignant tumor of the central nervous system (CNS) in children. MB/PNET survivors are at an increased risk for developing second malignancies. Little has been reported on development of low-grade lesions of the calvar...

journal_title：Academic radiology

authors： Koral K,Roy D,Timmons CF,Gargan L,Bowers DC

更新日期：2012-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:A national needs assessment of radiology program directors was performed to characterize grand rounds (GR) programs, assess the perceived educational value of GR programs, and determine the impact of the recent economic downturn on GR. MATERIALS AND METHODS:A 28-question survey was developed q...

journal_title：Academic radiology

authors： Yablon CM,Wu JS,Slanetz PJ,Eisenberg RL

更新日期：2011-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Diffraction-enhanced imaging (DEI) is a type of phase contrast x-ray imaging that has improved image contrast at a lower dose than conventional radiography for many imaging applications, but no studies have been done to determine if DEI might be useful for diagnosing lung injury. The goals of t...

journal_title：Academic radiology

authors： Connor DM,Zhong Z,Foda HD,Wiebe S,Parham CA,Dilmanian FA,Cole EB,Pisano ED

更新日期：2011-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to present and evaluate a fully automated system for emphysema quantification on low-dose computed tomographic images. The platform standardizes emphysema measurements against changes in the reconstruction algorithm and slice thickness. MATERIALS AND METHODS:Emphysema...

journal_title：Academic radiology

authors： Ceresa M,Bastarrika G,de Torres JP,Montuenga LM,Zulueta JJ,Ortiz-de-Solorzano C,Muñoz-Barrutia A

更新日期：2011-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Mammographic breast density is an important and widely accepted risk factor for breast cancer. A statement about breast density in the mammographic report is becoming a requirement in many States. However, there is significant inter-observer variation between radiologists in their interpretatio...

journal_title：Academic radiology

authors： Heine JJ,Fowler EE,Flowers CI

更新日期：2011-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aims of this study were to review the role of a quality information program (QUIP) as a semiautomated educational feedback mechanism and to review common errors in cross-sectional abdominal and pelvic studies as an initiative for continuing medical education and improving patient care. MAT...

journal_title：Academic radiology

authors： Kielar AZ,McInnes M,Quan M,O'Sullivan J

更新日期：2011-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Organomegaly in POEMS syndrome generally refers to the liver, spleen, and lymph nodes. This study investigates whether there is a significant difference in kidney sizes in patients with POEMS compared to normal controls. MATERIALS AND METHODS:Calculated kidney volumes from 77 patients with POE...

journal_title：Academic radiology

authors： Clapp AJ,Lee CU,Wood-Wentz CM,Leung N,Dispenzieri A

更新日期：2011-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Early-stage diagnosis of Parkinson's disease (PD) is essential in making decisions related to treatment and prognosis. However, there is no specific diagnostic test for the diagnosis of PD. The aim of this study was to evaluate the role of texture analysis (TA) of magnetic resonance images in d...

journal_title：Academic radiology

authors： Sikiö M,Holli KK,Harrison LC,Ruottinen H,Rossi M,Helminen MT,Ryymin P,Paalavuo R,Soimakallio S,Eskola HJ,Elovaara I,Dastidar P

更新日期：2011-10-01 00:00:00

abstract：:Innovation in the field of diagnostic imaging is based primarily on the availability of new and improved equipment that opens the door for new clinical applications. Payments for these imaging procedures are subject to complex Medicare price control schemes, affecting incentives for appropriate use and innovation. Ach...

journal_title：Academic radiology

authors： Garrison LP Jr,Bresnahan BW,Higashi MK,Hollingworth W,Jarvik JG

更新日期：2011-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to develop a pulmonary nodule viewing system to visualize and retrieve data from the Lung Image Database Consortium. MATERIALS AND METHODS:The pulmonary nodule viewing system, developed using Microsoft C++ and the .NET 2.0 Framework, is composed of a clinical informat...

journal_title：Academic radiology

authors： Lin H,Chen Z,Wang W

更新日期：2011-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aims of this study were to quantify resident anxiety when beginning independent call and to assess whether an apprenticeship experience (buddy call) can lessen anxiety and improve confidence. MATERIALS AND METHODS:A prospective cohort comparison of two groups of radiology residents beginni...

journal_title：Academic radiology

authors： Trout AT,Wang PI,Cohan RH,Bailey JE,Khalatbari S,Myles JD,Dunnick NR

更新日期：2011-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to compare different sequences for olfactory bulb volumetry using 3-T magnetic resonance imaging, evaluating reproducibility, repeatability, and systematic biases. MATERIALS AND METHODS:Twenty-two volunteers underwent 3-T magnetic resonance imaging of the frontal skul...

journal_title：Academic radiology

authors： Burmeister HP,Baltzer PA,Möslein C,Bitter T,Gudziol H,Dietzel M,Guntinas-Lichius O,Kaiser WA

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Percutaneous liver biopsy for tumors performed under local anesthesia is still a painful procedure. The aim of this study was to evaluate the patient's reaction and the analgesic efficacy and safety of an equimolar mixture of oxygen and nitrous oxide (EMONO) inhalation. MATERIALS AND METHODS:A...

journal_title：Academic radiology

authors： Meskine N,Vullierme MP,Zappa M,d'Assignies G,Sibert A,Vilgrain V

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to investigate the effects of exogenous endothelial progenitor cells (EPCs) on the growth and invasiveness of glioma in vivo to provide an experimental basis for the value and safety of using magnetically labeled EPCs as target vectors to detect early infiltration of g...

journal_title：Academic radiology

authors： Fang J,Wang S,Chen J,Zhang Y,Zhang B,Liang H,Zhang W

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To determine whether an unenhanced low-dose image acquired during automated contrast bolus timing can be used to assess hepatic steatosis. MATERIALS AND METHODS:Fifty subjects (29 male, 21 female; 26-92 years; mean body mass index (BMI; 26.9) with abdominal multiphasic computed tomography were...

journal_title：Academic radiology

authors： Husarik DB,Boll DT,Nelson RC,Merkle EM

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Q-space analysis using high b-value diffusion-weighted magnetic resonance (MR) data provides information on tissue microstructure in contrast to conventional MR imaging (MRI) based on low b-value diffusion-weighted imaging (DWI). The purpose of this study was to evaluate the use of mean displac...

journal_title：Academic radiology

authors： Hori M,Motosugi U,Fatima Z,Kumagai H,Ikenaga S,Ishigame K,Aoki S,Onodera T,Yagi K,Araki T

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To validate the hypothesis that a multisegmented approach during subtraction computed tomography (CT) angiography of the lower extremities can improve bone removal efficiency by suppressing regional motion. MATERIALS AND METHODS:The institutional review board of our hospital approved this retr...

journal_title：Academic radiology

authors： Lee IJ,Chung JW,Hong H,Yin YH,Kim S,Park EA,Lee W

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Geometrical distortion is a well-known problem in structural magnetic resonance imaging (MRI), leading to pixel shifts with variations up to several millimeters. Because the main factors of geometrical distortion are proportional to B(0), MRI spatial encoding distortions tend to increase with h...

journal_title：Academic radiology

authors： Dammann P,Kraff O,Wrede KH,Özkan N,Orzada S,Mueller OM,Sandalcioglu IE,Sure U,Gizewski ER,Ladd ME,Gasser T

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To retrospectively analyze the significance of 3.0-T contrast-enhanced (CE) magnetic resonance angiography (MRA) with calf compression in the lower limbs of diabetic patients with peripheral vascular disease. MATERIALS AND METHODS:Sixty-one type 2 diabetes patients underwent both MRA and digit...

journal_title：Academic radiology

authors： Li J,Zhao JG,Li MH

更新日期：2011-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The Accreditation Council on Graduate Medical Education (ACGME) through its Outcome Project requires training programs in all medical specialties to integrate six general competencies into residency training: patient care, medical knowledge, professionalism, interpersonal and communication skil...

journal_title：Academic radiology

authors： Relyea-Chew A,Talner LB

更新日期：2011-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Most secondary intramammary tumors occur as metastatic involvement from the contralateral breast. Breast metastases (BM) from nonmammary malignancies are very rare. The aims of this study were to estimate retrospectively the prevalence of BM from nonmammary malignancies and to describe their ra...

journal_title：Academic radiology

authors： Surov A,Fiedler E,Holzhausen HJ,Ruschke K,Schmoll HJ,Spielmann RP

更新日期：2011-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the correlations of tracheal volume and collapsibility on inspiratory and end-expiratory computed tomography (CT) with lung volume and with lung function in smokers. MATERIALS AND METHODS:The institutional review board approved this study at each institution. 85 smokers (mean age 6...

journal_title：Academic radiology

authors： Yamashiro T,San José Estépar R,Matsuoka S,Bartholmai BJ,Ross JC,Diaz A,Murayama S,Silverman EK,Hatabu H,Washko GR

更新日期：2011-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Our purpose in this study was to develop an automated computer-aided volumetry (CAV) scheme for quantifying pneumothorax in multidetector computed tomography (MDCT) images for pediatric patients and to investigate the imaging parameters that may affect its accuracy. MATERIALS AND METHODS:Fifty...

journal_title：Academic radiology

authors： Cai W,Lee EY,Vij A,Mahmood SA,Yoshida H

更新日期：2011-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Osteoarthritis (OA) is a common disease, and early diagnosis is essential for preventing further cartilage destruction and decreasing severe complications. Ultrasound biomicroscopy (UBM) is sensitive for detecting minute lesions in tissue because of its higher resolution, but its B-mode charact...

journal_title：Academic radiology

authors： Wang Y,Guo Y,Zhang L,Niu H,Xu M,Zhao B,Wan W

更新日期：2011-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Hepatic ischemia/reperfusion injury (IRI) occurs during certain hepatobiliary surgeries, hemorrhagic shock, and veno-occlusive disease. Biochemical changes caused by hepatic IRI lead to hepatocellular remodeling, including cellular regeneration or irreversible apoptosis. This study aims to char...

journal_title：Academic radiology

authors： Chow AM,Chan KW,Fan SJ,Yang J,Cheung JS,Khong PL,Wu EX

更新日期：2011-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Acoustic noise both in terms of its magnitude and frequency during magnetic resonance imaging (MRI) scan is influenced by imaging parameters and pulse sequences. It varies because of many different factors such as structure, materials, and magnetic field strength. The purpose of our study is to...

journal_title：Academic radiology

authors： Hamaguchi T,Miyati T,Ohno N,Hirano M,Hayashi N,Gabata T,Matsui O,Matsushita T,Yamamoto T,Fujiwara Y,Kimura H,Takeda H,Takehara Y

更新日期：2011-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to compare the efficacy of dual-energy computed tomography (DECT), time-resolved magnetic resonance (MR) imaging (MRI) perfusion measurements, and high-resolution MR angiography (MRA) for the detection of pulmonary embolism (PE) in a rabbit model. MATERIALS AND ME...

journal_title：Academic radiology

authors： Zhang LJ,Lu L,Bi J,Jin LX,Chai X,Zhao YE,Chen B,Lu GM

更新日期：2010-12-01 00:00:00

abstract：:Radiology articles are primarily designed to be read on paper or a screen. Audio versions let users hear this material during activities when reading is not practical. Currently, there are relatively few radiology materials in audio format. However, inexpensive text-to-speech software can easily produce spoken-word ve...

journal_title：Academic radiology

authors： Richardson ML

更新日期：2010-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Epicardial adipose tissue (EAT), pericardial adipose tissue (PAT), and subcutaneous adipose tissue (SAT) are mediators of metabolic risk and may be involved in the pathogenesis of coronary artery disease. The aim of this study was to investigate the association of visceral and subcutaneous fat ...

journal_title：Academic radiology

authors： Ahmadi N,Nabavi V,Yang E,Hajsadeghi F,Lakis M,Flores F,Zeb I,Bevinal M,Ebrahimi R,Budoff M

更新日期：2010-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to evaluate whether texture analysis (TA) can detect subtle changes in cerebral tissue caused by mild traumatic brain injury (MTBI) and to determine whether these changes correlate with neuropsychological and diffusion tensor imaging (DTI) findings. MATERIALS AND METH...

journal_title：Academic radiology

authors： Holli KK,Wäljas M,Harrison L,Liimatainen S,Luukkaala T,Ryymin P,Eskola H,Soimakallio S,Ohman J,Dastidar P

更新日期：2010-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To investigate a multimodality computer-aided diagnosis (CAD) scheme that combines image information from full-field digital mammography (FFDM) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for computerized breast cancer classification. MATERIALS AND METHODS:From a retrosp...

journal_title：Academic radiology

authors： Yuan Y,Giger ML,Li H,Bhooshan N,Sennett CA

更新日期：2010-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of our study is to perform an internal validation of a new reference standard for vasospasm diagnosis in aneurysmal subarachnoid hemorrhage (A-SAH) patients. MATERIALS AND METHODS:A retrospective study was performed on A-SAH patients between January 2002 and May 2009. All patients ...

journal_title：Academic radiology

authors： Reichman M,Gold R,Greenberg E,Ivanidze J,Elias E,Comunale J,Tsiouris AJ,Johnson C,Sanelli PC

更新日期：2010-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of this study was to retrospectively evaluate an automated global scoring system for evaluating the extent and severity of disease in a known cohort of patients with documented bronchiectasis. On the basis of a combination of validated three-dimensional automated algorithms for bronchia...

journal_title：Academic radiology

authors： Odry BL,Kiraly AP,Godoy MC,Ko J,Naidich DP,Novak CL,Lerallut JF

更新日期：2010-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to determine the acquisition and interpretation times of screen-film mammography and soft-copy digital mammography in a diagnostic mammography center. MATERIALS AND METHODS:The study was conducted in three phases for patients presenting for clinical diagnostic wor...

journal_title：Academic radiology

authors： Kuzmiak CM,Cole E,Zeng D,Kim E,Koomen M,Lee Y,Pavic D,Pisano ED

更新日期：2010-09-01 00:00:00

abstract：:Hematopoietic malignancies that can be encountered in the breast include lymphoma, leukemia, and multiple myeloma/plasmacytoma. These are readily imaged via [18]F-fluorodeoxyglucose position emission tomography (PET)/computed tomography (CT) and can manifest as unilateral, bilateral, single, multiple, round/oval masse...

journal_title：Academic radiology

authors： Ginat DT,Puri S

更新日期：2010-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of the study was to investigate the optimal protocols of dual-source computed tomography (CT) angiography in aortic stent grafting in terms of image noise and radiation dose, based on an in vitro phantom study. MATERIALS AND METHODS:A series of helical CT cans were performed on a human...

journal_title：Academic radiology

authors： Sun Z,Ng C

更新日期：2010-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). MAT...

journal_title：Academic radiology

authors： Ozgun M,Kirchhof P,Bunck AC,Heindel W,Eckardt L,Maintz D

更新日期：2010-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The goal of this article is to analyze and compare the performance of a developed mass computer-aided detection (CAD) system that takes breast density information into account when using manual or automatic breast density annotations in the training step. The advantages of considering this brea...

journal_title：Academic radiology

authors： Oliver A,Lladó X,Freixenet J,Martí R,Pérez E,Pont J,Zwiggelaar R

更新日期：2010-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Comprehensive training in cardiac imaging during radiology residency is imperative if radiologists are to maintain a significant role in this rapidly growing field. In this study, radiology chief residents were surveyed to assess the current status of cardiac imaging training in radiology resid...

journal_title：Academic radiology

authors： Minocha J,Yaghmai V,Hammond N,Pyrros AT,Nikolaidis P

更新日期：2010-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Sample-size estimation is an important consideration when planning a receiver operating characteristic (ROC) study. The aim of this work was to assess the prediction accuracy of a sample-size estimation method using the Monte Carlo simulation method. MATERIALS AND METHODS:Two ROC ratings simul...

journal_title：Academic radiology

authors： Chakraborty DP

更新日期：2010-05-01 00:00:00