Incompatibility of water-soluble contrast media and intravascular pharmacologic agents. An in vitro study.

abstract：RATIONALE AND OBJECTIVES:To investigate image mottle in conventional CT images of the abdomen as a function of radiographic technique factors and patient size. METHODS:Water-filled phantoms simulating the abdomens of adult (32 cm in diameter) and pediatric (16 cm in diameter) patients were used to investigate image mo...

journal_title：Investigative radiology

authors： Ende JF,Huda W,Ros PR,Litwiller AL

更新日期：1999-04-01 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：OBJECTIVE:The purpose of this study was to assess the ability of a flow-sensitive alternating inversion recovery-arterial spin labeling (FAIR-ASL) technique to track renal perfusion changes during pharmacologic and physiologic alterations in renal blood flow using microspheres as a gold standard. MATERIALS AND METHODS...

journal_title：Investigative radiology

authors： Artz NS,Wentland AL,Sadowski EA,Djamali A,Grist TM,Seo S,Fain SB

更新日期：2011-02-01 00:00:00

abstract：PURPOSE:To determine whether liver metastases conspicuity is improved at 80 kVp when compared with weighted average (WA) simulated 120 kVp data using dual source dual energy CT. METHODS:A total of 11 patients with 44 hypo-vascular liver metastases underwent contrast enhanced Dual Energy CT (DECT). In all cases the sub...

journal_title：Investigative radiology

authors： Robinson E,Babb J,Chandarana H,Macari M

更新日期：2010-07-01 00:00:00

abstract：:Arterial occlusion by direct-current transcatheter electrocoagulation (TCEC) has been developed experimentally and used successfully in clinical situations. The major shortcoming of the technique has been the lengthy time necessary for occlusion of larger arteries. In the present study we attempted to decrease the tim...

journal_title：Investigative radiology

authors： Ralston MD,Woodfield S,Halvorsen R,Pizzo SV,Thompson WM

更新日期：1982-03-01 00:00:00

abstract：OBJECTIVE:As an imaging modality for follow-up during continuous or repeated hepatic arterial infusion chemotherapy using a hepatic intra-arterial indwelling catheter, the usefulness of CT while infusing contrast through the indwelling catheter (reservoir port) was examined. METHODS:Using reservoir ports implanted in ...

journal_title：Investigative radiology

authors： Morimoto M,Satake M,Sekiguchi R,Haruno M,Moriyama N

更新日期：1999-12-01 00:00:00

abstract：MATERIALS AND METHODS:Stenotic kidney (STK) and contralateral kidney magnetization transfer ratios (MTRs; Mt/M0) were measured at 3.0-T magnetic resonance imaging, at offset frequencies of 600 and 1000 Hz, before and 1 month post-PTRA in 7 RVD pigs. Stenotic kidney MTR was correlated to renal perfusion, renal blood flo...

journal_title：Investigative radiology

authors： Afarideh M,Jiang K,Ferguson CM,Woollard JR,Glockner JF,Lerman LO

更新日期：2021-02-01 00:00:00

abstract：:Radiolabeled blood cells are widely used for both clinical and research studies. In vitro and in vivo studies have shown the tagging process does not significantly affect function. The labeling techniques and clinical uses of labeled leukocytes and platelets are reviewed. ...

journal_title：Investigative radiology

authors： Datz FL

更新日期：1986-03-01 00:00:00

abstract：:Gallbladder sclerotherapy after permanent cystic duct occlusion, to prevent gallstone recurrence in nonsurgical gallstone therapy, is at least a two-stage procedure. A balloon catheter was developed to perform gallbladder sclerotherapy with only temporary occlusion of the cystic duct, and the efficacy and safety of th...

journal_title：Investigative radiology

authors： Brakel K,Laméris JS,Vergunst H,Ten Kate FJ,Nijs HG,Terpstra OT

更新日期：1991-09-01 00:00:00

abstract：:Blood samples from previous contrast reactors and nonreactor controls were incubated with diatrizoate and several contrast analogues. Total complement levels were assayed. All the agents caused complement activation generally proportional to their concentration. Reactors' sera responded to lower concentrations of cont...

journal_title：Investigative radiology

authors： Siegle RL,Lieberman P,Rice MC

更新日期：1983-07-01 00:00:00

abstract：:A method and associated algorithm are presented which allow a simple and accurate determination to be made of the location of small symmetric areas presented in roentgenological images. The method utilizes an operator to visually spot object positions but eliminates the need for critical positoning accuracy on the ope...

journal_title：Investigative radiology

authors： Keller RA,Baily NA

更新日期：1976-03-01 00:00:00

abstract：:The Point Spread Function (PSF) in NMR imaging is the result of both the line broadening due to magnet field inhomogeneity and the intrinsic spectrum of the nucleus at resonance. In the case of proton imaging, the line broadening dominates the small chemical shifts and the spectral lines are not resolved. This is not ...

journal_title：Investigative radiology

authors： Harrison CG,Adams DF,Kramer PB

更新日期：1985-03-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to compare the prognostic utility of a staging system using magnetic resonance imaging (MRI) with the seventh American Joint Committee on Cancer (AJCC) staging system in patients with hepatocellular carcinoma (HCC) who underwent hepatic resection. MATERIALS AND METHODS:A total of 1...

journal_title：Investigative radiology

authors： An C,Choi GH,Lee HS,Kim MJ

更新日期：2012-11-01 00:00:00

abstract：:The potential of magnetic resonance imaging (MRI) quantification of calcium for the evaluation of pulmonary nodules was investigated in simulated nodules. Calcium salts do not contain mobile protons and thus have no signal on MR proton images. To determine whether the absence of signal from partially calcified nodules...

journal_title：Investigative radiology

authors： Gamsu G,de Geer G,Cann C,Müller N,Brito A

更新日期：1987-11-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate the impact of a novel iterative denoising and image enhancement technique in T1-weighted precontrast and postcontrast volume-interpolated breath-hold examination (VIBE) of the abdomen on image quality, noise levels, and diagnostic confidence without change of acquisit...

journal_title：Investigative radiology

authors： Gassenmaier S,Afat S,Nickel D,Kannengiesser S,Herrmann J,Hoffmann R,Othman AE

更新日期：2020-11-18 00:00:00

abstract：:The effect of three iodinated contrast media (CM) on human plasma butyrylcholinesterase (BuChE) activity was studied during the intravenous pyelography (i.v.P). BuChE is an enzyme that participates in the metabolism of acetylcholine and hydrolyzes food esters and drugs such as nondepolarizing muscle relaxants and loca...

journal_title：Investigative radiology

authors： Mironidou M,Ximitidou O,Christopoulos S,Kokkas B

更新日期：1998-05-01 00:00:00

abstract：BACKGROUND:Gadolinium leakage in ocular structures (GLOS) was recently observed in fluid-attenuated inversion recovery (FLAIR) images obtained the day after an initial gadolinium injection in stroke patients. The specificity of GLOS to stroke and its mechanisms remain unclear. OBJECTIVE:We investigated the factors ass...

journal_title：Investigative radiology

authors： Galmiche C,Moal B,Marnat G,Sagnier S,Schweitzer C,Dousset V,Sibon I,Tourdias T

更新日期：2021-01-19 00:00:00

abstract：OBJECTIVES:The objective of this study was to evaluate the frequency and characteristics of artifacts in segmentation-based attenuation correction maps (μ-maps) of positron emission tomography/magnetic resonance (PET/MR) and their impact on PET interpretation and the standardized uptake value (SUV) quantification in no...

journal_title：Investigative radiology

authors： Brendle C,Schmidt H,Oergel A,Bezrukov I,Mueller M,Schraml C,Pfannenberg C,la Fougère C,Nikolaou K,Schwenzer N

更新日期：2015-05-01 00:00:00

abstract：:The issue of dechelation (transmetallation) in vivo after administration of the linear gadolinium-based contrast agents, and potential safety concerns, is considered on the basis of an extensive, focused literature review. Early indications of potential problems included the high level of excess ligand used in the for...

journal_title：Investigative radiology

authors： Runge VM

更新日期：2018-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Iopromide is a new monomeric, nonionic contrast agent that exhibits low osmolality and low viscosity in high concentration in aqueous solutions. Double-blind, randomized clinical trials have established the efficacy, safety, and tolerance of iopromide for excretory urography, coronary angiograp...

journal_title：Investigative radiology

authors： Goldberg SN,Abrahams J,Drayer BP,Golding S,Bernardino M,Brunetti J

更新日期：1994-05-01 00:00:00

abstract：:The application of intravenous, intrathecal, and inhalation enhancement techniques to the CT evaluation of the nonhuman primate (Papio cynocephalus/anubis) is described. The falx cerebri cortical vasculature, vein of Galen, straight sinus and tentorium cerebelli were defined with intravenous enhancement. Intrathecal C...

journal_title：Investigative radiology

authors： Drayer BP,Wolfson SK Jr,Rosenbaum AE,Dujovny M,Boehnke M,Cook EE

更新日期：1979-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors used gadolinium (Gd) chelate as a T1, T2, and T2* enhancing agent in reperfused myocardial infarction to compare the appearance of reperfused myocardial infarction on spin echo and gradient echo magnetic resonance (MR) sequences. METHODS:Rats (n = 28) were subjected to reperfused m...

journal_title：Investigative radiology

authors： Geschwind JF,Saeed M,Wendland MF,Higgins CB

更新日期：1998-07-01 00:00:00

abstract：:We have examined the effect of dose on contrast medium-induced reductions in glomerular filtration in anesthetized rabbits. The fraction of renal plasma flow that is filtered, the filtration fraction, was directly measured by the renal arteriovenous difference method using technetium-99m (99mTc) (Sn) DTPA as the trace...

journal_title：Investigative radiology

authors： Harvey LA,Caldicott WJ

更新日期：1983-09-01 00:00:00

abstract：OBJECTIVES:The objective of this study was to assess the feasibility of the combination of magnetic resonance (MR)-guided biopsy (MRGB) and diagnostic 3T MR imaging in the localization of local recurrence of prostate cancer (PCa) after external beam radiation therapy (EBRT). MATERIALS AND METHODS:Twenty-four consecuti...

journal_title：Investigative radiology

authors： Yakar D,Hambrock T,Huisman H,Hulsbergen-van de Kaa CA,van Lin E,Vergunst H,Hoeks CM,van Oort IM,Witjes JA,Barentsz JO,Fütterer JJ

更新日期：2010-03-01 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：:We have examined the metabolic behavior of several triiodobenzoic acid derivatives because of the observed mutagenicity and cytotoxicity of 3-amino-5-acetamido-2,4,6-triiodobenzoate (I) and 3,5-diamino-2,4,6-triiodobenzoate (II). Measurements were facilitated using iodine-131 (131I)-labeled compounds. Drug retention i...

journal_title：Investigative radiology

authors： Weiss R,Hsu B,Wheeler L,Norman A,Riley RF

更新日期：1981-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:At many institutions, three-dimensional magnetic resonance imaging (MRI) is routinely used for examination of the knee. Multiplanar reconstruction (MPR) is a method of displaying three-dimensional datasets. The authors assessed the usefulness of MPR for evaluating knee MRI datasets by comparing...

journal_title：Investigative radiology

authors： Gay SB,Chen NC,Burch JJ,Gleason TR,Sagman AM

更新日期：1993-02-01 00:00:00

abstract：:An isotopic radiation source 125I was investigated for use in soft tissue radiaography, with particular attention to possible use in mammography for mass screening. Film sensitivities, exposure rates, absorbed doeses, contrast and resolution were determined, and compared to conventional x-ray units. It was found that ...

journal_title：Investigative radiology

authors： Fairchild R,Atkins HL,Lebowitz E,Greenberg D

更新日期：1975-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the effect of the transverse ligament on translation of the menisci. METHODS:Six cadaveric knees were examined by MR imaging inside a positioning device before and after transecting the transverse ligament. The knees were examined at various positions: extension, 30 degrees of flex...

journal_title：Investigative radiology

authors： Muhle C,Thompson WO,Sciulli R,Pedowitz R,Ahn JM,Yeh L,Clopton P,Haghighi P,Trudell DJ,Resnick D

更新日期：1999-09-01 00:00:00

abstract：PURPOSE:The relaxivities of 3 macrocyclic gadolinium-based contrast agents (GBCAs) were determined in human plasma and blood under standardized and clinically relevant laboratory conditions. METHODS:The T1 relaxivity, r1, was determined in human plasma at 1.5, 3, and 7 T, and in human blood at 3 T at 37°C in phantoms ...

journal_title：Investigative radiology

authors： Szomolanyi P,Rohrer M,Frenzel T,Noebauer-Huhmann IM,Jost G,Endrikat J,Trattnig S,Pietsch H

更新日期：2019-09-01 00:00:00