Pathophysiology of radiocontrast nephropathy: a role for medullary hypoxia.

abstract：PURPOSE:To evaluate the diagnostic performance of 1.0-M gadobutrol-enhanced, 3-dimensional (3D), dynamic MR images with 3D-MR cholangiography (MRC) in the preoperative evaluation of bile duct cancer staging and resectability. MATERIALS AND METHODS:Our institutional review board approved this retrospective study. Sixty...

journal_title：Investigative radiology

authors： Ryoo I,Lee JM,Chung YE,Park HS,Kim SH,Han JK,Choi BI

更新日期：2010-04-01 00:00:00

abstract：:Diagnostic radiology is expanding, playing an increasingly central role in patient care, which heightens the importance of radiology teaching in undergraduate medical education. This study examined the impact of increased structure and systematic evaluation on student performance in a radiology elective. The evaluatio...

journal_title：Investigative radiology

authors： Blane CE,Calhoun JG,Maxim BR,Martel W,Davis WK

更新日期：1985-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Ultrasound can cause destruction of microbubble contrast agents used to enhance medical ultrasound imaging. This study sought to characterize the dynamics of this interaction by direct visual observation of microbubbles during insonification in vitro by a medical ultrasound imaging system. MET...

journal_title：Investigative radiology

authors： Klibanov AL,Ferrara KW,Hughes MS,Wible JH Jr,Wojdyla JK,Dayton PA,Morgan KE,Brandenburger GH

更新日期：1998-12-01 00:00:00

abstract：:Receiver operating characteristic (ROC) analysis has been used in a broad variety of medical imaging studies during the past 15 years, and its advantages over more traditional measures of diagnostic performance are now clearly established. But despite the essential simplicity of the approach, workers in the field ofte...

journal_title：Investigative radiology

authors： Metz CE

更新日期：1989-03-01 00:00:00

abstract：:Recent publications of the magnetic resonance safety profile of neurostimulators, cardiac pacemakers, and other implanted devices imply that these devices are no longer a contraindication for magnetic resonance imaging. It is very promising that patients who have these implanted devices may in the future no longer be ...

journal_title：Investigative radiology

authors： Nitz WR,Brinker G,Diehl D,Frese G

更新日期：2005-12-01 00:00:00

abstract：:The biliary and urinary excretion of sodium tyropanoate (Bilopaque) and sodium ipodate (Oragrafin) were studied in unanesthetized bile-fistula dogs using stepwise, increasing, intravenous infusions of the contrast materials. A constant intravenous infusion of sodium taurocholate was administered at the rate of either ...

journal_title：Investigative radiology

authors： Berk RN,Loeb PM,Cobo-Frenkel A,Barnhart JL

更新日期：1977-01-01 00:00:00

abstract：:Pyrroxamide [N-(1-hydroxymethyl-2,3-dihydroxypropyl)-2,2,5,5-tetramethyl pyrrolidine-1-oxyl-3-carboxyamide] is a newly tested nonionic monomeric nitroxyl compound with demonstrated effectiveness for MRI contrast enhancement at doses as low as 10(-3) M. Pyrroxamide and its hydroxylamine metabolic derivative were tested...

journal_title：Investigative radiology

authors： Gordon DG,Brasch RC,Ogan MD,Deen D

更新日期：1988-08-01 00:00:00

abstract：PURPOSE:The purpose of this study was to evaluate the magnetic resonance prostate imaging reporting and data system (PI-RADS) for the detection of prostate cancer by the results of magnetic resonance imaging (MRI)-guided biopsy of the prostate as a reference standard. PATIENTS AND METHODS:In 55 patients who had underg...

journal_title：Investigative radiology

authors： Baur AD,Maxeiner A,Franiel T,Kilic E,Huppertz A,Schwenke C,Hamm B,Durmus T

更新日期：2014-06-01 00:00:00

abstract：:The developing trend for all medical images to be in digital form raises an important question: should diagnostic interpretations be made directly from a CRT or from some form of hard copy recording of the CRT? This question was studied by having two observers read a series of digital images of the thyroid including b...

journal_title：Investigative radiology

authors： Keyes JW Jr,Kline RC,Resinger WW,Rose EA,Koral KF,Rogers WL

更新日期：1983-05-01 00:00:00

abstract：:The extent to which various concentrations of the paramagnetic metal ions [gadolinium (III), manganese (II), chromium (III), iron (III), nickel (II), copper (II), and cobalt (II)] affect proton magnetic relaxation times of distilled water, 4% human serum albumin (HSA), and dog plasma was studied in vitro. The pH of wa...

journal_title：Investigative radiology

authors： Barnhart JL,Berk RN

更新日期：1986-02-01 00:00:00

abstract：OBJECTIVE:We aimed to assess whether migraine is associated with changes in the distribution of the venous drainage through primary and secondary pathways by using phase-contrast magnetic resonance imaging (MRI). METHODS:We examined 26 patients (37.3 ± 13.9 years) with recurring migraine headaches and 26 age- and gend...

journal_title：Investigative radiology

authors： Koerte IK,Schankin CJ,Immler S,Lee S,Laubender RP,Grosse C,Eftimov L,Milde-Busch A,Reiser M,Straube A,Heinen F,Alperin N,Ertl-Wagner B

更新日期：2011-07-01 00:00:00

abstract：:Gadolinium was attached to antibodies and tested in vitro and in vivo for its effect on proton relaxation enhancement. Using the cyclic anhydride method, diethylenetriaminepentaacetic acid (DTPA) was attached to albumin, IgG and anti-CEA monoclonal antibody. Gadolinium (Gd) was then chelated to the protein complexes f...

journal_title：Investigative radiology

authors： Unger EC,Totty WG,Neufeld DM,Otsuka FL,Murphy WA,Welch MS,Connett JM,Philpott GW

更新日期：1985-10-01 00:00:00

abstract：PURPOSE:To prospectively determine the accuracy of 1.5 Tesla (T) and 3 T magnetic resonance angiography (MRA) versus digital subtraction angiography (DSA) in the depiction of infrageniculate arteries in patients with symptomatic peripheral arterial disease. PATIENTS AND METHODS:A prospective 1.5 T, 3 T MRA, and DSA co...

journal_title：Investigative radiology

authors： Diehm N,Kickuth R,Baumgartner I,Srivastav SK,Gretener S,Husmann MJ,Jaccard Y,Do do D,Triller J,Bonel HM

更新日期：2007-06-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to evaluate the extent to which various commercially available gadolinium-containing contrast-enhancing (CE) agents can interfere with the measurement of calcium levels by currently used laboratory methods, suggesting (spurious) hypocalcemia or hypercalcemia with a potential ris...

journal_title：Investigative radiology

authors： Löwe A,Balzer T,Hirt U

更新日期：2005-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Air microemboli may damage the cerebral microvasculature. The aim of this study was to evaluate the safety of ultrasound contrast agents composed of air microspheres with regard to cerebral damage when administered into the arterial system (ie, when not filtered by the capillary system of the l...

journal_title：Investigative radiology

authors： Haggag KJ,Russell D,Walday P,Skiphamn A,Torvik A

更新日期：1998-03-01 00:00:00

abstract：:In this article, we propose a semiautomatic method for time-continuous contour detection in all phases of the cardiac cycle in magnetic resonance sequences. The method is based on multidimensional dynamic programming. After shape parameterization, cost hypercubes are filled with image-feature derived cost function val...

journal_title：Investigative radiology

authors： Uzümcü M,van der Geest RJ,Swingen C,Reiber JH,Lelieveldt BP

更新日期：2006-01-01 00:00:00

abstract：OBJECTIVES:Ferumoxytol, an intravenous iron supplement, can be used in off-label mode as a contrast agent in magnetic resonance imaging. The aim of this study was to assess whether ferumoxytol can be used as a marker of inflammation in animal models of acute and chronic inflammatory kidney diseases. MATERIAL AND METHO...

journal_title：Investigative radiology

authors： Budjan J,Neudecker S,Schock-Kusch D,Kraenzlin B,Schoenberg SO,Michaely HJ,Attenberger UI

更新日期：2016-02-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to evaluate the potential of iterative metal artifact reduction (IMAR) for the improvement of computed tomography (CT)-based position emission tomography (PET) attenuation correction in the vicinity of metal implants and compare it with dual-energy-based metal artifact reduction stra...

journal_title：Investigative radiology

authors： Schabel C,Gatidis S,Bongers M,Hüttig F,Bier G,Kupferschlaeger J,Bamberg F,la Fougère C,Nikolaou K,Pfannenberg C

更新日期：2017-01-01 00:00:00

abstract：OBJECTIVES:Altered systolic blood flow in the ascending aorta has been correlated with increased aortic growth in patients with bicuspid aortic valves (BAVs). We used conventional, 2-dimensional (2D) phase contrast magnetic resonance imaging (PC-MRI) to assess the relationship between altered flow and future growth in ...

journal_title：Investigative radiology

authors： Burris NS,Sigovan M,Knauer HA,Tseng EE,Saloner D,Hope MD

更新日期：2014-10-01 00:00:00

abstract：OBJECTIVES:Pancreatic ductal adenocarcinoma (PDAC) is a very aggressive tumor with a very low 5-year survival rate of 8%. The aims of this study are to determine reference values and physiologic confounders in healthy pancreas and to assess the diagnostic accuracy of ultrasound time-harmonic elastography (THE) in the d...

journal_title：Investigative radiology

authors： Burkhardt C,Tzschätzsch H,Schmuck R,Bahra M,Jürgensen C,Pelzer U,Hamm B,Braun J,Sack I,Marticorena Garcia SR

更新日期：2020-05-01 00:00:00

abstract：:The authors correlated sonographic findings with histologic findings in a rabbit model of osteomyelitis. Staphylococcus aureus osteomyelitis was induced in the femora of 11 New Zealand white rabbits. The opposite leg was used as a control. Sonographic findings showed fluid adjacent to the bone in 11 cases. The fluid w...

journal_title：Investigative radiology

authors： Abiri MM,DeAngelis GA,Kirpekar M,Abou AN,Ablow RC

更新日期：1992-02-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to assess and compare the overall performance, reliability, variability, as well as the accuracy of diffusion tensor imaging (DTI) and fiber tracking metrics, for the muscles of the calf at 3 T and 7 T. MATERIALS AND METHODS:Ten volunteers (5 males; mean age, 29.1 ± 4.7 years), with...

journal_title：Investigative radiology

authors： Giraudo C,Motyka S,Weber M,Feiweier T,Trattnig S,Bogner W

更新日期：2019-01-01 00:00:00

abstract：PURPOSE:We aimed to determine whether diffusion-weighted magnetic resonance imaging, by means of the apparent diffusion coefficient (ADC), is able to guide magnetic resonance-guided biopsy in patients fit for active surveillance (AS) and identify patients harboring high-grade Gleason components not suitable for AS. MA...

journal_title：Investigative radiology

authors： Somford DM,Hoeks CM,Hulsbergen-van de Kaa CA,Hambrock T,Fütterer JJ,Witjes JA,Bangma CH,Vergunst H,Smits GA,Oddens JR,van Oort IM,Barentsz JO,MR-PRIAS Collaboration Group.

更新日期：2013-03-01 00:00:00

abstract：PURPOSE:The aim was to investigate the feasibility and image quality of prospective respiratory gating for 3-D computed tomography (CT) of the lung. MATERIAL AND METHODS:Eight anesthetized pigs underwent prospectively gated multidetector computed tomography using 2 devices: a charge-coupled device (CCD) camera and a l...

journal_title：Investigative radiology

authors： Zaporozhan J,Ley S,Unterhinninghofen R,Saito Y,Fabel-Schulte M,Keller S,Szabo G,Kauczor HU

更新日期：2006-05-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to evaluate the diagnostic value of x-ray dark-field imaging in projection radiography-based depiction of pneumothoraces in the neonatal murine lung, a potentially life-threatening medical condition that requires a timely and correct diagnosis. MATERIALS AND METHODS:By the use of a ...

journal_title：Investigative radiology

authors： Hellbach K,Yaroshenko A,Willer K,Pritzke T,Baumann A,Hesse N,Auweter S,Reiser MF,Eickelberg O,Pfeiffer F,Hilgendorff A,Meinel FG

更新日期：2016-10-01 00:00:00

abstract：OBJECTIVE:To evaluate the feasibility of adenosine-stress dynamic myocardial volume perfusion imaging with second generation dual source computed tomography (CT) for the qualitative and quantitative assessment of myocardial blood flow (MBF) compared with stress perfusion and viability magnetic resonance imaging (MRI). ...

journal_title：Investigative radiology

authors： Bastarrika G,Ramos-Duran L,Rosenblum MA,Kang DK,Rowe GW,Schoepf UJ

更新日期：2010-06-01 00:00:00

abstract：:Fractures modeled in the dried skull indicate that the initial plane of computed tomography (CT) section contributes to the accuracy of three-dimensional (3D) images generated from two-dimensional (2D) CT data. The authors retrospectively analyzed seven clinical cases of tripod zygomatic fractures that were imaged wit...

journal_title：Investigative radiology

authors： Levy RA,Kellman RM,Rosenbaum AE

更新日期：1991-05-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the effects of gadolinium (Gd3+), provided as gadolinium chloride, on fibroblast function. MATERIALS AND METHODS:Human dermal fibroblasts in monolayer culture and intact skin in organ culture were exposed to the lanthanide metal (1-20 μM). RESULTS:Increased proliferat...

journal_title：Investigative radiology

authors： Bhagavathula N,Dame MK,DaSilva M,Jenkins W,Aslam MN,Perone P,Varani J

更新日期：2010-12-01 00:00:00

abstract：PURPOSE:To evaluate the feasibility of ex vivo ablation implementing a cryo-based internally cooled bipolar radiofrequency (RF) applicator and to determine the influence of power and gas pressure on the size and shape of the resulting ablation zones. MATERIALS AND METHODS:Two hundred twenty-five ablations were perform...

journal_title：Investigative radiology

authors： Rempp H,Voigtländer M,Clasen S,Kempf S,Neugebauer A,Schraml C,Schmidt D,Claussen CD,Enderle MD,Goldberg SN,Pereira PL

更新日期：2009-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To investigate the capacity of manganese dipyridoxyl diphosphate (MnDPDP)-enhanced magnetic resonance imaging (MRI) to discriminate the injured myocardium from the normal myocardium in a cat model. MATERIALS AND METHODS:Fourteen cats were prepared for acute myocardial infarction with 90-minute...

journal_title：Investigative radiology

authors： Kim TH,Yang DH,Choi JW,Kim ST,Yoon JH,Shin JH,Seo JB,Gong GY,Lim TH

更新日期：2005-01-01 00:00:00