Contrast-enhanced magnetic resonance angiography of the renal arteries. Original investigation.

abstract：RATIONALE AND OBJECTIVES:To develop a new animal model for the evaluation of the renal tolerance of contrast agent and its application to diatrizoate and iotrolan injections in comparison to saline and mannitol solution. MATERIALS AND METHODS:The nephrotoxic potential of intravenously injected contrast agents in Beagl...

journal_title：Investigative radiology

authors： Krause W,Gilles T

更新日期：2003-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Diabetic patients frequently suffer contrast media-induced nephropathy. Hyperglycemia in diabetes mellitus causes gradual deterioration of glomerular mesangial cells (MCs) in the kidney. In this study, the authors investigated the response of rat MCs cultured in high-glucose medium to diatrizoa...

journal_title：Investigative radiology

authors： Wasaki M,Sugimoto J,Shirota K

更新日期：2001-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To compare the visibility and localization of extratemporal cortical lesions in extratemporal epilepsy by using curved reconstruction (CR) and three-dimensional surface rendering (3D SR) of 3D-acquired MR images and to study the degree of confidence with which localizations are made, particular...

journal_title：Investigative radiology

authors： Meiners LC,Scheffers JM,De Kort GA,Burger H,Van Huffelen AC,Van Rijen PC,Van Veelen CW

更新日期：2001-04-01 00:00:00

abstract：:Perfluoroctylbromide (PFOB), a radiopaque reticuloendothelial system contrast media for computed tomography, has been shown to accumulate in macrophages. In the current study PFOB was tested in rabbits as an abscess imaging agent. Two abscesses were induced in each of 24 rabbits, one in the liver and the other in the ...

journal_title：Investigative radiology

authors： Mattrey RF,Andrè M,Campbell J,Mitten R,Multer F,Hackney D,Long DM,Higgins CB

更新日期：1984-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Density of trabecular bone structures in human heel bones was assessed by 3D magnetic resonance (MR) gradient echo imaging (GEI) with multiple echoes. Different spatial resolutions were applied to investigate the influence of the pixel size on signal characteristics in GEI and to find suitable ...

journal_title：Investigative radiology

authors： Machann J,Schnatterbeck P,Raible A,Lutz O,Claussen CD,Schick F

更新日期：2000-07-01 00:00:00

abstract：OBJECTIVE:To demonstrate a method of assessing radiologic diagnostic agreement utilizing multiple blinded external readers. METHODS:Six body CT studies interpreted by one reader (primary reader) at the host institution were compiled with patient identifiers removed. Brief clinical histories that were available to the ...

journal_title：Investigative radiology

authors： Ryan AF,Semelka RC,Molina PL,Yonkers S,Vaidean G

更新日期：2010-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Low-field magnetic resonance imaging (MRI) evaluation of breast implants is described, with emphasis on the capabilities provided by different imaging sequences. METHODS:Open architecture MR images using a .064-T permanent magnet and three-dimensional Fourier transform and inversion recovery s...

journal_title：Investigative radiology

authors： Frankel S,Occhipinti K,Kaufman L,Kramer D,Carlson J,Mineyev M,Friedenthal R

更新日期：1994-08-01 00:00:00

abstract：:High-resolution real-time ultrasonography (5, 7.5, and 10 MHz) was used to examine the menisci of the knee in ten normal volunteers and in ten patients with knee injuries. The posterior horns of the medial and lateral menisci were easily demonstrated. Normal anatomy and pathologic changes could be imaged in the menisc...

journal_title：Investigative radiology

authors： Selby B,Richardson ML,Montana MA,Teitz CC,Larson RV,Mack LA

更新日期：1986-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To study cellular mechanisms that cause contrast media nephropathy, an in vitro system for proximal and distal tubular cells has been established to evaluate the influence of x-ray contrast media on tubular function. METHODS:Confluent cell cultures of the two renal cell lines, proximal tubule ...

journal_title：Investigative radiology

authors： Andersen KJ,Christensen EI,Vik H

更新日期：1994-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Gd-DTPA is a well-characterized, safe contrast agent frequently used in magnetic resonance imaging (MRI) of the central nervous system. The purpose of this double-blind, comparative MRI study of brain, spine, trunk, and limbs was to evaluate the safety and efficacy of Gd-DOTA versus Gd-DTPA in ...

journal_title：Investigative radiology

authors： Oudkerk M,Sijens PE,Van Beek EJ,Kuijpers TJ

更新日期：1995-02-01 00:00:00

abstract：OBJECTIVES:The aims of this study were to investigate and validate quantitative susceptibility mapping (QSM) for lesional iron quantification in cerebral cavernous malformations (CCMs). MATERIALS AND METHODS:Magnetic resonance imaging studies were performed in phantoms and 16 patients on a 3-T scanner. Susceptibility ...

journal_title：Investigative radiology

authors： Tan H,Liu T,Wu Y,Thacker J,Shenkar R,Mikati AG,Shi C,Dykstra C,Wang Y,Prasad PV,Edelman RR,Awad IA

更新日期：2014-07-01 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：:Observation of the relaxivity of MRI contrast media over a wide range of magnetic fields is not only necessary for predicting their efficiency at any field but also compulsory for understanding and improving their mechanisms of action. The best experimental approach to this problem is the field cycling method, which a...

journal_title：Investigative radiology

authors： Muller RN,Vander Elst L,Rinck PA,Vallet P,Maton F,Fischer H,Roch A,Van Haverbeke Y

更新日期：1988-09-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to compare changes in the signal intensity (SI) ratio of the dentate nucleus (DN) to the pons, DN to cerebrospinal fluid (CSF), and globus pallidus (GP) to thalamus on unenhanced T1-weighted magnetic resonance imaging (MRI) scans after serial injections of the macrocyclic gadolinium-...

journal_title：Investigative radiology

authors： Radbruch A,Weberling LD,Kieslich PJ,Hepp J,Kickingereder P,Wick W,Schlemmer HP,Bendszus M

更新日期：2015-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:This study was devised to develop a method of measuring the acute effects of radiocontrast media on renal function and assessing the relationship of the dose of radiocontrast media infused with the incidence of radiocontrast-induced renal failure. In addition, the drug adenosine phosphate-magne...

journal_title：Investigative radiology

authors： Albert SG,Shapiro MJ,Brown WW,Goodgold H,Zuckerman D,Durham R,Kern M,Fletcher J,Wolverson M,Plummer ES

更新日期：1994-06-01 00:00:00

abstract：:An agent has been identified in lymph from rat kidneys rendered ischemic by partial renal artery occlusion that induces a striking neovascular response in a hamster cheek-pouch assay system. The factor has a high molecular weight, cannot be identified in lymph from normal kidneys, and is associated with a marked incre...

journal_title：Investigative radiology

authors： Hollenberg NK,Paskins-Hurlburt AJ,Abrams HL

更新日期：1985-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To compare the diagnostic efficacy of a standard dose of MRI contrast agent in the evaluation of primary brain tumors and metastases using a high-field 3 tesla MR unit versus a 1.5 tesla MR unit. METHODS:Sixteen patients with brain tumors were examined at both field strengths using identical a...

journal_title：Investigative radiology

authors： Nöbauer-Huhmann IM,Ba-Ssalamah A,Mlynarik V,Barth M,Schöggl A,Heimberger K,Matula C,Fog A,Kaider A,Trattnig S

更新日期：2002-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Magnetic resonance microscopy (MRM) has evolved from a technical curiosity to a tool with which researchers can study important disease models. But MRM is not simply an extension of clinical magnetic resonance imaging. In this article, the unique adaptations of MRM required in the study of caro...

journal_title：Investigative radiology

authors： Arnder L,Zhou X,Cofer GP,Hedlund LW,Johnson GA

更新日期：1994-09-01 00:00:00

abstract：:This paper presents a microcomputer-based technique that accurately quantifies volumes from computed tomographic (CT) scans of irregularly shaped objects as well as displaying 3-D reconstructions. The method uses standard CT film, allowing analysis of previous or outside CT studies. The planimetry method showed less t...

journal_title：Investigative radiology

authors： Albright RE Jr,Fram EK

更新日期：1988-12-01 00:00:00

abstract：OBJECTIVE:The objective of this study was to validate quantitation of R2* and DeltaR2* measurements obtained with a 3-dimensional (3-D) multiple gradient-recalled echo (mGRE) sequence for evaluating intrarenal oxygenation in humans. MATERIALS AND METHODS:Validation was accomplished (1) by comparing R2* values with pre...

journal_title：Investigative radiology

authors： Tumkur S,Vu A,Li L,Prasad PV

更新日期：2006-02-01 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：:The effects of an intravenously administered nitroxyl spin label (PCA) on the magnetic resonance imaging (MRI) appearance and relaxation times of acute canine myocardial infarctions were studied. Twenty-four hours after ligation of the left anterior descending coronary artery (LAD), animals were either sacrificed imme...

journal_title：Investigative radiology

authors： McNamara MT,Wesbey GE,Brasch RC,Sievers R,Lipton MJ,Higgins CB

更新日期：1985-09-01 00:00:00

abstract：:For magnetic resonance, the established class of intravenous contrast media is the gadolinium-based contrast agents. In the 3 decades since initial approval, these have proven in general to be very safe for human administration. However, in 2006, a devastating late adverse reaction to administration of the less stable...

journal_title：Investigative radiology

authors： Runge VM

更新日期：2017-06-01 00:00:00

abstract：:A technique to measure absolute arterial blood flow in ml/min has been developed utilizing software programs with high-speed digital recording for the off-line analysis of intra-arterial injections of contrast medium. Measurements of pulsatile flow in a phantom for a physical flow model showed that calculations with t...

journal_title：Investigative radiology

authors： Forbes G,Gray JE,Felmlee JP

更新日期：1985-03-01 00:00:00

abstract：:The design and implementation of a digital radiology image management system requires the definition, evaluation, and comparison of appropriate measures of system performance. The mean throughput rate is an important measure of the actual performance of a finished system. The mean throughput rate identifies the transm...

journal_title：Investigative radiology

authors： Cox GG,Templeton AW,Anderson WH,Cook LT,Hensley KS,Dwyer SJ 3rd

更新日期：1986-02-01 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

abstract：:Using real-time ultrasound, the motions of the tongue, hyoid bone, and larynx were monitored and timed during swallowing in ten normal subjects. A well-defined propulsive wave of the tongue was observed during swallowing a 5-cc water bolus. The body of the hyoid bone was identified on the ultrasound scan as a high ech...

journal_title：Investigative radiology

authors： Shawker TH,Sonies B,Hall TE,Baum BF

更新日期：1984-03-01 00:00:00

abstract：PURPOSE:The purpose of this study was to assess the value of intravoxel incoherent motion and diffusion-weighted imaging for predicting the histologic grade of pancreatic neuroendocrine tumors (PNETs). MATERIALS AND METHODS:Forty patients with surgically diagnosed PNETs who underwent preoperative magnetic resonance im...

journal_title：Investigative radiology

authors： Hwang EJ,Lee JM,Yoon JH,Kim JH,Han JK,Choi BI,Lee KB,Jang JY,Kim SW,Nickel MD,Kiefer B

更新日期：2014-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Gray scale and power Doppler sonography are commonly used to evaluate cervical lymph nodes. This study was undertaken to identify which of the features used in ultrasound of cervical lymph nodes is readily applicable in routine clinical practice. METHODS:Two hundred and eight-six patients diag...

journal_title：Investigative radiology

authors： Ahuja A,Ying M

更新日期：2002-06-01 00:00:00

abstract：OBJECTIVE:To determine the prevalence of nephrogenic systemic fibrosis (NSF) in patients with chronic kidney disease (CKD) who have received gadopentetate dimeglumine. MATERIALS AND METHODS:We retrospectively studied all patients who underwent contrast-enhanced magnetic resonance imagings (CE-MRIs) between January 1, ...

journal_title：Investigative radiology

authors： Hope TA,Herfkens RJ,Denianke KS,LeBoit PE,Hung YY,Weil E

更新日期：2009-03-01 00:00:00