Ventricular dilatation in ex-prematures: only confined to the occipital region? MRI-based normative standards for 19-year-old ex-prematures without major handicaps.
Abstract BACKGROUND: Premature birth may be associated with white matter injury later developing with widening of the ventricles. However, population-based data on normal ventricular size by age are sparse, making the evaluation of possible ventricular dilatation difficult. PURPOSE: To present the linear measurements of the ventricular system, to compare these to subjectively assessed ventricular size, and to examine differences in ventricular size between ex-prematures and controls. MATERIAL AND METHODS: Eligible survivors (n = 113) from the initial birth cohort (n = 217, bor...
Source: Acta Radiologica - August 12, 2013 Category: Radiology Authors: Aukland SM, Elgen IB, Odberg MD, Chong WK, Eide GE, Rosendahl K Tags: Acta Radiol Source Type: research

MRI findings before and after prolapse surgery.
Abstract BACKGROUND: Therapeutical outcome after prolapse surgery is evaluated using a standardized grading system based on maximum prolapse extent, which might not provide the full picture of the patient's subjective outcome. We therefore applied an evaluation method, which is detached from a grading system. PURPOSE: To evaluate the impact of pelvic organ mobility in dynamic magnetic resonance imaging (MRI) before and after mesh-repair surgery in patients with symptomatic pelvic organ prolapse. MATERIAL AND METHODS: To obtain measurements, we performed parasagittal T2-weighted turbo spin echo sequence a...
Source: Acta Radiologica - August 12, 2013 Category: Radiology Authors: Alt CD, Brocker KA, Lenz F, Sohn C, Kauczor HU, Hallscheidt P Tags: Acta Radiol Source Type: research

The costs and effects of contrast-enhanced magnetic resonance angiography and digital substraction angiography on quality of life in patients with peripheral arterial disease.
CONCLUSION: A treatment plan for peripheral arterial occlusive disease employing MRA versus DSA as the principal imaging modality yields a better cost/QoL ratio for MRA. PMID: 23939383 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 12, 2013 Category: Radiology Authors: Bosma J, Dijksman LM, Lam K, Wisselink W, van Swijndregt AD, Vahl A Tags: Acta Radiol Source Type: research

Weighted subtraction in 3D ultrashort echo time (UTE) imaging for visualization of short T2 tissues of the knee.
Abstract BACKGROUND: Ultrashort echo time (UTE) image to directly visualize short T2 tissues requires postprocessing for the suppression of the surrounding long T2 tissues in a clinical magnetic resonance imaging (MRI) scanner. Weighted subtraction of UTE images with an optimal weighting factor could provide high positive contrast with adequate suppression. PURPOSE: To demonstrate in-vivo UTE MRI with weighted subtractions of dual echo UTE imaging using a 3 T clinical MRI and to determine the optimal weighting factors through the analyses of signal-to-noise ratios (SNRs) and contrast-to-noise ratios (C...
Source: Acta Radiologica - August 10, 2013 Category: Radiology Authors: Lee YH, Kim S, Song HT, Kim I, Suh JS Tags: Acta Radiol Source Type: research

A motive for the use of a posterior approach in shoulder arthography: ventral leakage of contrast medium.
CONCLUSION: As ventral leakage of contrast was seen in a substantial number of cases when using a posterior approach in shoulder MR arthrography, the use of a posterior approach is advised to avoid misinterpretation of ventral contrast leakage with accidental extra articular contrast injection, and to increase confidence in the final radiological diagnosis. PMID: 23928007 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 8, 2013 Category: Radiology Authors: Adriaensen ME, Ertl OT, Laar PJ, Nix M, Vanhoenacker FM Tags: Acta Radiol Source Type: research

Bronchial artery hypertrophy is correlated with coronary artery disease.
CONCLUSION: There is an association between CAD and BAH. In patients with no pulmonary alterations, BAH could be caused by undiagnosed underlying CAD. PMID: 23928008 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 8, 2013 Category: Radiology Authors: Tresoldi S, Di Leo G, Villa F, Squarza SA, Beneggi IM, Flor N, Sardanelli F, Cornalba G Tags: Acta Radiol Source Type: research

Posterior root of lateral meniscus: the detailed anatomic description on 3T MRI.
CONCLUSION: The PRLM inserts mainly in the intertubercular area with a thin, long anterior extension to the point just posteromedial to the tibial attachment of the ACL. It is well delineated on PDW 3.0-T MRI as a dark signal line parallel to the tibial plateau on mid-sagittal images and dark signal foci traversing the intertubercular crest on contiguous coronal images. PMID: 23928009 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 8, 2013 Category: Radiology Authors: You MW, Park J, Park S, Jin W, Ryu K Tags: Acta Radiol Source Type: research

Diagnostic role of Gallium-68 DOTATOC and Gallium-68 DOTATATE PET in patients with neuroendocrine tumors: a meta-analysis.
CONCLUSION: The molecular imaging agents 68Ga-DOTATOC and 68Ga-DOTATATE demonstrated high sensitivity and specificity in the diagnosis of NETs on PET scan. Although both are accurate tools in the diagnosis of NETs, 68Ga-DOTATATE PET may be more sensitive and specific than 68Ga-DOTATOC PET scan. PMID: 23928010 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 8, 2013 Category: Radiology Authors: Yang J, Kan Y, Ge BH, Yuan L, Li C, Zhao W Tags: Acta Radiol Source Type: research

Detection of hypoplasia of bony cochlear nerve canal by the opening threshold of virtual endoscopy: a pilot study.
Abstract BACKGROUND: Dimensions of the bony cochlear nerve canal (BCNC) have been proposed as a potential diagnostic standard for BCNC hypoplasia, but the standard remains inconsistent. Some studies have revealed that computed tomography virtual endoscopy (CTVE) with variation of reconstruction threshold is good at identifying labyrinthine fistulas or semi-circular canal dehiscence. PURPOSE: To examine diagnostic accuracy of VE in the evaluation of BCNC hypoplasia on basis of opening threshold. MATERIAL AND METHODS: Twenty ears diagnosed with BCNC hypoplasia were included in this study. One hundred ears ...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Quan Y, Liu J, Liu Z, Wu L, Gong R Tags: Acta Radiol Source Type: research

Thin-section CT findings in peripheral lung cancer of 3 cm or smaller: are there any characteristic features for predicting tumor histology or do they depend only on tumor size?
This study included 106 solid peripheral lung cancers of 3 cm or smaller (56 adenocarcinomas, 33 squamous cell carcinomas, and 17 small cell carcinomas) in which 16-slice CT with 1 mm collimation was performed before surgery. Six morphologic findings (presence or absence of lobulation, coarse spiculation, air bronchogram, cavity, pleural tag, and pleural-based lesion) and four measurements (ratio of the greatest transverse and vertical diameter to the shortest transverse diameter and density of lobulation and coarse spiculation) on thin-section CT images were evaluated. Density of lobulation (coarse spiculati...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Jiang B, Takashima S, Miyake C, Hakucho T, Takahashi Y, Morimoto D, Numasaki H, Nakanishi K, Tomita Y, Higashiyama M Tags: Acta Radiol Source Type: research

Ovarian volume and antral follicle count assessed by MRI and transvaginal ultrasonography: a methodological study.
m M Abstract BACKGROUND: Ultrasonographic measurements of ovarian volume and antral follicle count are of clinical importance as diagnostic features of polycystic ovarian syndrome (PCOS), and as a parameter in estimation of ovarian follicular reserve in infertility care. PURPOSE: To compare two-dimensional (2D)/three-dimensional (3D) transvaginal ultrasonography (TVUS) and magnetic resonance imaging (MRI) for estimation of ovarian volume and antral follicle count, and to assess reproducibility and inter-observer agreement of MRI measurements. MATERIAL AND METHODS: Volumes of 172 ovaries in 99 women aged ...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Leonhardt H, Gull B, Stener-Victorin E, Hellström M Tags: Acta Radiol Source Type: research

Diagnosis of intracranial hemorrhagic lesions: comparison between 3D-SWAN (3D T2*-weighted imaging with multi-echo acquisition) and 2D-T2*-weighted imaging.
Abstract BACKGROUND: 3D-susceptibility-weighted angiography (SWAN) can produce high-resolution images that yield excellent susceptibility-weighted contrast at a relatively short acquisition time. PURPOSE: To compare SWAN- and 2D-T2*-weighted gradient-echo images (T2*-WI) for their sensitivity in the depiction of cerebral hemorrhagic lesions. MATERIAL AND METHODS: We subjected 75 patients with suspected cerebral hemorrhagic lesions to SWAN and T2*-WI at 3T. We first measured the contrast-to-noise ratio (CNR) using an agar phantom that contained different concentrations of superparamagnetic iron oxide (SPI...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Hayashida Y, Kakeda S, Hiai Y, Ide S, Ogasawara A, Ooki H, Watanabe K, Nishimura J, Ohnari N, Korogi Y Tags: Acta Radiol Source Type: research

Lymphoscintigraphy with peritumoral injection versus lymphoscintigraphy with subdermal periareolar injection of technetium-labeled human albumin to identify sentinel lymph nodes in breast cancer patients.
CONCLUSION: PT versus PA injection of radiotracer showed comparable success rates for axillary SLN identification, and can be considered a rapid and reliable method. PMID: 23926236 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Caruso G, Cipolla C, Costa R, Morabito A, Latteri S, Fricano S, Salerno S, Latteri MA Tags: Acta Radiol Source Type: research

Detection of cardiac myxomas with non-contrast chest CT.
Abstract BACKGROUND: Cardiac myxomas are sources of systemic embolism. Currently a large volume of chest CT and calcium-scoring CT scans are performed without contrast injection. PURPOSE: To evaluate the diagnostic capability of non-contrast CT covering heart in detecting cardiac myxomas. MATERIAL AND METHODS: This retrospective study included 36 non-contrast CT scans of 36 consecutive patients (16 men, 20 women) who underwent CT scan before surgery for left atrial myxomas and 20 patients without myxoma as a control group. Two independent readers who were blinded to medical information reviewed non-contr...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Shin W, Choe YH, Kim SM, Song IY, Kim SS Tags: Acta Radiol Source Type: research

Three-phase, contrast-enhanced, multidetector CT in the evaluation of complicated renal cysts: comparison of the postcontrast phase combination.
Abstract BACKGROUND: Multiphasic multidetector computed tomography (MDCT) is widely used for the assessment and diagnosis of complicated renal cysts. PURPOSE: To determine the optimal combination of postcontrast phases of MDCT for the evaluation of complicated renal cysts. MATERIAL AND METHODS: In 164 renal cysts with pathology confirmation or follow-up>2 years, the Bosniak category was recorded by two radiologists in consensus. They reviewed the MDCT images during three interpretation sessions. In the first session, the radiologists evaluated two phases of images (unenhanced and corticomedullary phas...
Source: Acta Radiologica - August 7, 2013 Category: Radiology Authors: Kim MH, Yi R, Cho KS, Choi HJ Tags: Acta Radiol Source Type: research

Computed tomography angiography of coronary artery bypass grafts: robustness in emergency and clinical routine settings.
CONCLUSION: Dual-source CTA is a robust and accurate method for assessment of graft patency and detection of relevant extra-cardiac pathologies in a non-selected patient population after CABG surgery in routine as well as emergency clinical settings. Artifacts caused by irregular heart rhythm or surgical clips do not impair graft patency evaluation but limit stenosis assessment. PMID: 23908242 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 1, 2013 Category: Radiology Authors: Heye T, Kauczor HU, Szabo G, Hosch W Tags: Acta Radiol Source Type: research

US-guided transthoracic biopsy of peripheral lung lesions: pleural contact length influences diagnostic yield.
CONCLUSION: In US-guided transthoracic biopsy of peripheral lung lesions, the LPCAL of the lesions is an important factor for a correct diagnosis. PMID: 23908243 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 1, 2013 Category: Radiology Authors: Jeon KN, Bae K, Park MJ, Choi HC, Shin HS, Shin S, Kim HC, Ha CY Tags: Acta Radiol Source Type: research

Evaluation of gadolinium-EOB-DTPA uptake after portal vein embolization: value of an increased flip angle.
CONCLUSION: A flip angle of 30° increases the contrast between liver partitions with and without portal venous embolization. Thereby, the sensitivity for differences in uptake intensity is increased. This could be of value for a more exact determination of differences in regional liver function and, consequently, the estimation of the future remnant liver function. PMID: 23908244 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - August 1, 2013 Category: Radiology Authors: Geisel D, Lüdemann L, Wagner C, Stelter L, Grieser C, Malinowski M, Stockmann M, Seehofer D, Hamm B, Gebauer B, Denecke T Tags: Acta Radiol Source Type: research

Endovascular embolization strategy for renal arteriovenous malformations.
CONCLUSION: TAE treatment was safe, effective, and provided a good outcome, except when only coils were used as the embolization agent. PMID: 23904088 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 31, 2013 Category: Radiology Authors: Murata S, Onozawa S, Nakazawa K, Akiba A, Mine T, Ueda T, Yasui D, Sugihara F, Kondoh Y, Kumita SI Tags: Acta Radiol Source Type: research

Spectrum of superficial nerve-related tumor and tumor-like lesions: MRI features.
Abstract Superficial soft-tissue masses arising from skin appendages, metastasis, and inflammatory lesions have been widely reported. However, nerve-related superficial mass-like lesions other than peripheral nerve sheath tumors are less commonly described. High resolution magnetic resonance imaging (MRI) is an excellent non-invasive tool for the evaluation of such lesions. In this article, the authors discuss the entire spectrum of these lesions and also outline a systemic diagnostic approach. PMID: 23904089 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 31, 2013 Category: Radiology Authors: Wadhwa V, Lee PP, Strome GM, Suh KJ, Carrino JA, Chhabra A Tags: Acta Radiol Source Type: research

Outcome and predictive factors of successful transarterial embolization for the treatment of acute gastrointestinal hemorrhage.
Abstract BACKGROUND: Transarterial embolization (TAE) is an effective procedure for the treatment of acute gastrointestinal bleeding (GIB). Factors associated with clinical success have not been well delineated. PURPOSE: To evaluate the technical and clinical successes of TAE for acute GIB in order to identify factors influencing clinical success and in-hospital mortality. MATERIAL AND METHODS: This was a retrospective study of 70 consecutive patients with GIB who underwent angiography and embolization between January 2004 and December 2011. The technical success rate, clinical success rate, and in-hospi...
Source: Acta Radiologica - July 31, 2013 Category: Radiology Authors: Hongsakul K, Pakdeejit S, Tanutit P Tags: Acta Radiol Source Type: research

Imaging requirements for medical applications of additive manufacturing.
This article gives an overview of the main requirements for medical imaging affected by needs of AM, as well as provides a brief literature review from existing clinical cases concentrating especially on the kind of radiology they required. As an example application, a pair of CT images of the facial skull base was turned into 3D models in order to illustrate the significance of suitable imaging parameters. Additionally, the model was printed into a preoperative medical model with a popular AM device. Successful clinical cases of AM are recognized to rely heavily on efficient collaboration between various disciplines - not...
Source: Acta Radiologica - July 30, 2013 Category: Radiology Authors: Huotilainen E, Paloheimo M, Salmi M, Paloheimo KS, Björkstrand R, Tuomi J, Markkola A, Mäkitie A Tags: Acta Radiol Source Type: research

Evaluation of effects of bronchiectasis on bronchial artery diameter with multidetector computed tomography.
Abstract BACKGROUND:: Among patients with increased bronchial artery diameter there is a significant association between hemoptysis and bronchiectasis score. The higher score of bronchiectasis, the higher risk of hemoptysis development. PURPOSE:: To investigate the association of stages of bronchiectasis based on a computed tomography (CT) grading system, with bronchial artery diameter and hemoptysis in patients with bronchiectasis. MATERIAL AND METHODS:: Patients with lung pathologies other than bronchiectasis, which may cause hemoptysis, were excluded from the study. One hundred and forty-five patients...
Source: Acta Radiologica - July 29, 2013 Category: Radiology Authors: Kosar M, Kurt A, Keskin S, Keskin Z, Arslan H Tags: Acta Radiol Source Type: research

Hybrid iterative reconstruction algorithm in brain CT: a radiation dose reduction and image quality assessment study.
urtscher IM Abstract BACKGROUND: Iterative reconstruction (IR) algorithms improve image quality and allow for radiation dose reduction in CT. Dose reduction is particularly challenging in brain CT where good low-contrast resolution is essential. Ideally, evaluation of image quality combines objective measurements and subjective assessment of clinically relevant quality criteria. Subjective assessment is associated with various pitfalls and biases. PURPOSE: To evaluate the potential of the hybrid IR algorithm iDOSE(4) to preserve image quality in phantom and clinical brain CT acquired with 30% reduced radiatio...
Source: Acta Radiologica - July 29, 2013 Category: Radiology Authors: Löve A, Siemund R, Höglund P, Van Westen D, Stenberg L, Petersen C, Björkman-Burtscher IM Tags: Acta Radiol Source Type: research

The value of gadoxetic acid-enhanced and diffusion-weighted MRI for prediction of grading of pancreatic neuroendocrine tumors.
Abstract BACKGROUND: Parenchyma-preserving resection for the treatment of benign pancreatic neuroendocrine tumors (NETs) has been tried, and preoperative prediction of benign pancreatic NET is important. Recently, diffusion-weighted imaging (DWI) of abdomen magnetic resonance imaging (MRI) has been used to characterize benign and malignant tumors and DWI might be helpful in prediction of benign pancreatic NETs. PURPOSE: To evaluate the value of gadoxetic acid-enhanced MRI and DWI in predicting benign pancreatic NETs for determination of parenchyma-preserving resection. MATERIAL AND METHODS: Our ethics co...
Source: Acta Radiologica - July 29, 2013 Category: Radiology Authors: Jang KM, Kim SH, Lee SJ, Choi D Tags: Acta Radiol Source Type: research

Low-dose multidetector computed tomography of the cervical spine: optimization of iterative reconstruction strength levels.
Abstract BACKGROUND: Iterative reconstruction (IR) techniques reduce image noise in multidetector computed tomography (MDCT) imaging. They can therefore be used to reduce radiation dose while maintaining diagnostic image quality nearly constant. However, CT manufacturers offer several strength levels of IR to choose from. PURPOSE: To determine the optimal strength level of IR in low-dose MDCT of the cervical spine. MATERIAL AND METHODS: Thirty consecutive patients investigated by low-dose cervical spine MDCT were prospectively studied. Raw data were reconstructed using filtered back-projection and sinogr...
Source: Acta Radiologica - July 29, 2013 Category: Radiology Authors: Omoumi P, Verdun FR, Salah YB, Berg BC, Lecouvet FE, Malghem J, Ott JG, Meuli R, Becce F Tags: Acta Radiol Source Type: research

Detection of prostate cancer in peripheral zone: comparison of MR diffusion tensor imaging, quantitative dynamic contrast-enhanced MRI, and the two techniques combined at 3.0 T.
Abstract BACKGROUND: Previous studies have shown that the diagnostic accuracy for prostate cancer improved with diffusion tensor imaging (DTI) or quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) only. However, the efficacy of combined DTI and quantitative DCE-MRI in detecting prostate cancer at 3.0 T is still indeterminate. PURPOSE: To investigate the utility of diffusion tensor imaging (DTI), quantitative DCE-MRI, and the two techniques combined at 3.0 T in detecting prostate cancer of the peripheral zone (PZ).Material and Methods: DTI and DCE-MRI of 33 patients was acquired prior ...
Source: Acta Radiologica - July 26, 2013 Category: Radiology Authors: Li C, Chen M, Li S, Zhao X, Zhang C, Luo X, Zhou C Tags: Acta Radiol Source Type: research

Non-invasive quantification of anti-angiogenic therapy by contrast-enhanced MRI in experimental pancreatic cancer.
Abstract BACKGROUND: Currently, early changes of tumor vasculature after angiogenesis inhibition can only be evaluated by histopathology, a method not suitable in a clinical setting. PURPOSE: To quantify effects of different angiogenesis inhibitors on the microvasculature of orthotopically implanted pancreatic cancers by contrast-enhanced magnetic resonance imaging (MRI) in order to establish a non-invasive technique for monitoring antiangiogenic cancer treatment. MATERIAL AND METHODS: DSL-6A/C1 pancreatic cancers were implanted in the pancreas of 109 Lewis rats. Three weeks later, antiangiogenic treatme...
Source: Acta Radiologica - July 26, 2013 Category: Radiology Authors: Raatschen HJ, Fischer S, Zsivcsec B, Schoenfeld CO, Hotz B, Buhr HJ, Hotz HG Tags: Acta Radiol Source Type: research

Post-endoscopic biliary sphincterotomy bleeding: an interventional radiology approach.
CONCLUSION: Our experience demonstrates that TAE can effectively control bleeding post-ES avoiding the need for invasive surgery in most patients. PMID: 23892235 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 26, 2013 Category: Radiology Authors: Dunne R, McCarthy E, Joyce E, McEniff N, Guiney M, Ryan JM, Beddy P Tags: Acta Radiol Source Type: research

MR imaging of the chest in children.
Abstract The application of magnetic resonance imaging (MRI) to diseases of the pediatric chest has been complicated, selective and cautious. More specifically, MRI of the pediatric lung has been a highly anticipated technique that has inherent great potential for improved imaging of the chest without the use of ionizing radiation. Practical issues impede the transition from multidetector computed tomography (MDCT) to MRI in some chest diseases in children, while other disease states are intrinsically easier to image using MRI. More rapid respiratory and cardiac rates, patient instability, sedation requirements, a...
Source: Acta Radiologica - July 25, 2013 Category: Radiology Authors: Manson DE Tags: Acta Radiol Source Type: research

Sclerosis and varicocele embolization with N-butyl cyanoacrylate: experience in 41 patients.
CONCLUSION: N2BCA as an embolic agent is a therapeutic alternative for the endovascular treatment of varicocele. This technique is uncomplicated, inexpensive, efficient, and safe. PMID: 23888063 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 25, 2013 Category: Radiology Authors: Urbano J, Cabrera M, Alonso-Burgos A Tags: Acta Radiol Source Type: research

MRI-guided stereotactic aspiration of brain abscesses by use of an optical tracking navigation system.
CONCLUSION: Punctures of brain abscesses with subsequent aspiration can be performed safely and efficiently by monitoring the procedure using an open interventional MRI system. PMID: 23884838 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 24, 2013 Category: Radiology Authors: Lü Y, Li C, Liu M, Fritz J, Carrino JA, Wu L, Zhao B Tags: Acta Radiol Source Type: research

Radiation exposure of the radiologist's eye lens during CT-guided interventions.
CONCLUSION: Estimating 50-200 CT-guided interventions per year performed by one interventionalist, the median dose of the eye lens of the interventional radiologist does not exceed the maximum of the ICRP-recommended equivalent eye lens dose limit of 20 mSv per year. PMID: 23884839 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 24, 2013 Category: Radiology Authors: Heusch P, Kröpil P, Buchbender C, Aissa J, Lanzman RS, Heusner TA, Ewen K, Antoch G, Fürst G Tags: Acta Radiol Source Type: research

The clinical and CT imaging features of metanephric adenoma.
Abstract BACKGROUND: Patients with metanephric adenoma have a good prognosis after undergoing total nephrectomy or local resection with kidney preservation. Accurate diagnosing is important for guiding clinical treatment. Only few previous case reports have been found focusing on the imaging findings of metanephric adenoma. PURPOSE: To evaluate the multislice computed tomography (MSCT) imaging characteristics of metanephric adenoma. MATERIAL AND METHODS: The imaging findings in eight patients with metanephric adenoma were studied retrospectively. MSCT was undertaken to investigate tumor location, size, a...
Source: Acta Radiologica - July 24, 2013 Category: Radiology Authors: Zhu Q, Zhu W, Wu J, Chen W, Wang S Tags: Acta Radiol Source Type: research

PET/CT imaging of skeletal muscle metastases.
CONCLUSION: SMM manifested on PET/CT as focal hypermetabolic intramuscular areas with different SUV. There were no significant differences between SUV or size of the identified SMM in esophageal cancer, renal cell carcinoma, and lung cancer. PMID: 23884841 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 24, 2013 Category: Radiology Authors: Surov A, Pawelka MK, Wienke A, Schramm D Tags: Acta Radiol Source Type: research

Fish bone foreign bodies in the pharynx and upper esophagus: evaluation with 64-slice MDCT.
CONCLUSION: MDCT is useful for the evaluation of the pharynx and upper esophageal FB foreign bodies. PMID: 23884842 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 24, 2013 Category: Radiology Authors: Park S, Choi DS, Shin HS, Cho JM, Jeon KN, Bae KS, Koh EH, Park JJ Tags: Acta Radiol Source Type: research

Volumetric breast composition analysis: reproducibility of breast percent density and fibroglandular tissue volume measurements in serial mammograms.
DM Abstract BACKGROUND: Volumetric breast composition analysis represents a useful tool for assessing changes in breast composition over time. However, no data exist on the reproducibility of this method in serial mammograms. PURPOSE: To assess the reproducibility of two volumetric breast composition parameters, breast percent density (PD) and fibroglandular tissue volume (FTV), in consecutive mammograms. MATERIAL AND METHODS: Volumetric breast composition analysis to determine PD and FTV was performed in two consecutive unilateral mammograms of 211 patients. All mammograms were obtained on the same dig...
Source: Acta Radiologica - July 22, 2013 Category: Radiology Authors: Engelken F, Singh JM, Fallenberg EM, Bick U, Böttcher J, Renz DM Tags: Acta Radiol Source Type: research

The prevalence of osteoarthritis of the atlanto-odontoid joint in adults using multidetector computed tomography.
CONCLUSION: Osteoarthritis of the atlanto-odontoid joint could be detected by MDCT in a young adult. It increased rapidly with increasing age on MDCT. PMID: 23878357 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 22, 2013 Category: Radiology Authors: Liu K, Lü Y, Cheng D, Guo L, Liu C, Song H, Chhabra A Tags: Acta Radiol Source Type: research

Diffusion-weighted magnetic resonance imaging combined with T2-weighted images in the detection of small breast cancer: a single-center multi-observer study.
Abstract BACKGROUND: Breast cancer is the most common cancer in women worldwide. However, it remains a difficult diagnosis problem to differentiate between benign and malignant breast lesions, especially in small early breast lesions. PURPOSE: To assess the diagnostic value of diffusion-weighted imaging (DWI) combined with T2-weighted imaging (T2WI) for small breast cancer characterization. MATERIAL AND METHODS: Fifty-eight patients (65 lesions) with a lesion
Source: Acta Radiologica - July 22, 2013 Category: Radiology Authors: Wu LM, Chen J, Hu J, Gu HY, Xu JR, Hua J Tags: Acta Radiol Source Type: research

Discriminative analysis of early-stage Alzheimer's disease and normal aging with automatic segmentation technique in subcortical gray matter structures: a multicenter in vivo MRI volumetric and DTI study.
Abstract BACKGROUND: Previous studies have revealed that amyloid depositions exist in not only the hippocampus but in other subcortical gray matter structures as well. Diffusion-tensor imaging (DTI) parameters might be more sensitive measures of early degeneration in Alzheimer's disease (AD) than conventional magnetic resonance imaging (MRI) techniques. PURPOSE: To evaluate the significance of the volumes and the mean diffusivity (MD) values of subcortical gray matter structures in discrimination between early-stage AD and normal subjects using the Integrated Registration and Segmentation Tool in FMRIB's Soft...
Source: Acta Radiologica - July 22, 2013 Category: Radiology Authors: Li YD, He HJ, Dong HB, Feng XY, Xie GM, Zhang LJ Tags: Acta Radiol Source Type: research

3-T in-bore MR-guided prostate biopsy based on a scoring system for target lesions characterization.
CONCLUSION: A simple 5-point scoring system of functional prostate MRI achieves excellent sensitivity and moderate specificity for directing 3-T-guided prostate biopsy relative to the histopathological findings. PMID: 23878360 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 22, 2013 Category: Radiology Authors: Quentin M, Schimmöller L, Arsov C, Rabenalt R, Antoch G, Albers P, Blondin D Tags: Acta Radiol Source Type: research

Advances in pediatric oncology MRI.
Abstract Refined stratification of disease is thought to result in better survival from childhood malignant disease while minimizing the adverse effects of anticancer therapies. There is a potential for magnetic resonance imaging (MRI) to contribute to such stratification by improved tissue characterization, anatomical depiction, staging, and assessment of early treatment response. Recent advances in pediatric MRI outside the central nervous system (CNS) are reviewed in this context. The focus is on new applications for conventional MRI and on clinical implementation of tissue-specific and quantitative techniques....
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Olsen YE Tags: Acta Radiol Source Type: research

Imaging in juvenile idiopathic arthritis (JIA): an update with particular emphasis on MRI.
Abstract Juvenile idiopathic arthritis (JIA) is a heterogeneous condition encompassing all forms of chronic arthritis of unknown origin and with onset before 16 years of age. During the last decade new, potent therapeutic agents have become available, underscoring the need for accurate monitoring of therapeutic response on both disease activity and structural damage to the joint. However, so far, treatment efficacy is based on clinical ground only, although clinical parameters are poor markers for disease activity and progression of structural damage. Not so for rheumatoid arthritis patients where the inclusion of...
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Damasio MB, de Horatio LT, Boavida P, Lambot-Juhan K, Rosendahl K, Tom P, Ording L Tags: Acta Radiol Source Type: research

Radial MRI during free breathing in contrast-enhanced hepatobiliary phase imaging.
CONCLUSION: RADAR-SE can be useful for hepatobiliary phase Gd-EOB-DTPA-enhanced MRI in patients who have difficulty holding their breath. PMID: 23873886 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Gomi T, Nagamoto M, Hasegawa M, Tabata A, Iwasaki M, Ooka M, Murata N, Tsunoo M, Iizuka Y, Kohda E, Shiraga N Tags: Acta Radiol Source Type: research

Pulmonary involvement in rheumatoid arthritis: multidetector computed tomography findings.
CONCLUSION: Rheumatoid arthritis is associated with a high frequency of CT findings and CT patterns, with nodules and pleural thickening being the most common CT findings and FB and ND being the most common CT patterns. MDCT identification of patients with RA may be helpful in the evaluation of pulmonary disease, even in patients without symptoms and PFT abnormalities. PMID: 23873887 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Yuksekkaya R, Celikyay F, Yilmaz A, Arslan S, Inanir A, Inonu H, Deniz C Tags: Acta Radiol Source Type: research

Quantitative evaluation of the axonal degeneration of central motor neurons in chronic cerebral stroke with diffusion tensor imaging.
CONCLUSION: The changes and diffusions of water molecule associated with the axonal degeneration of central motor neurons after chronic cerebral stroke can be detected by DTI, which can directly quantitatively reflect the degree and extent of axonal degeneration of central motor neurons and can compensate the shortcomings of conventional MRI and diffusion-weighted imaging (DWI). PMID: 23873888 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Lai C, Zhou HC, Ma XH, Zhang HX Tags: Acta Radiol Source Type: research

2D versus 3D roadmap for uterine artery catheterization: impact on several angiographic parameters.
CONCLUSION: Both roadmap techniques are effective imaging-guided tools for uterine artery catheterization, without difference in terms of radiation exposure or contrast load. The total procedure time is shorter in the 2D group. PMID: 23873889 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 19, 2013 Category: Radiology Authors: Maleux G, Michielsen K, Timmerman D, Poppe W, Heye S, Vaninbroukx J, Bosmans H Tags: Acta Radiol Source Type: research

CMR assessment of right ventricular function in patients with combined pulmonary stenosis and insufficiency after correction of tetralogy of Fallot.
Abstract BACKGROUND: Tetralogy of Fallot (TOF) is one of the most common types of congenital heart disease and requires prompt surgical correction. Post-correction pulmonary insufficiency (PI) often ensues in adulthood. At times, the PI is accompanied by residual pulmonary stenosis (PS). Little is known regarding right ventricular (RV) function in the setting of combined PS and PI. PURPOSE: To compare cardiac magnetic resonance (CMR) parameters for the assessment of RV function between patients with combined pulmonary stenosis and pulmonary insufficiency (PSPI) and isolated PI following surgical repair of TOF...
Source: Acta Radiologica - July 17, 2013 Category: Radiology Authors: Kohi MP, Ordovas KG, Naeger DM, Meadows AK, Foster E, Higgins CB Tags: Acta Radiol Source Type: research

The contribution of diffusion tensor imaging and magnetic resonance spectroscopy for the differentiation of breast lesions at 3T.
CONCLUSION: In conclusion, applying DTI and 1H-MRS together, adds incremental diagnostic value in the characterization of breast lesions and may sufficiently improve the low specificity of conventional breast MRI. PMID: 23864060 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - July 17, 2013 Category: Radiology Authors: Tsougos I, Svolos P, Kousi E, Athanassiou E, Theodorou K, Arvanitis D, Fezoulidis I, Vassiou K Tags: Acta Radiol Source Type: research

Pulmonary embolism in oncologic patients: frequency and embolus burden of symptomatic and unsuspected events.
Abstract BACKGROUND: Pulmonary embolism (PE) is a common cause of morbidity and mortality in oncologic patients. Furthermore, PE is an unsuspected finding in many cases. PURPOSE: To determine the frequency and embolus burden of PE in a consecutive oncologic patient group including symptomatic as well as incidental and initially unreported events. MATERIAL AND METHODS: In a retrospective, single-center study from June 2005 to January 2010 all patients with an oncologic disease (ICD-10 code C00 to C96) that received at least one contrast-enhanced computed tomography (CT) examination of the chest were revie...
Source: Acta Radiologica - July 17, 2013 Category: Radiology Authors: Bach AG, Schmoll HJ, Beckel C, Behrmann C, Spielmann RP, Wienke A, Abbas J, Surov A Tags: Acta Radiol Source Type: research