Role of red blood cell deformation in toxicity of contrast media in cerebral angiography.

abstract：OBJECTIVES:The purpose of this study was to assess whether fluorochrome-coupled bacterial magnetic nanoparticles can be used as bimodal contrast agent for both magnetic resonance imaging (MRI) and near-infrared fluorescence optical (NIRF) imaging of cultured macrophages. MATERIALS AND METHODS:Bacterial magnetic nanopa...

journal_title：Investigative radiology

authors： Lisy MR,Hartung A,Lang C,Schüler D,Richter W,Reichenbach JR,Kaiser WA,Hilger I

更新日期：2007-04-01 00:00:00

abstract：:Left ventricular volume has been measured with ultrafast computed tomography. However, the accuracy with which this can be done is unknown. We therefore imaged with ultrafast computed tomography 11 rectangular phantoms, 20 to 225 ml, and 17 left ventricular casts, 15 to 112 ml. Two observers planimetered serial tomogr...

journal_title：Investigative radiology

authors： Pietras RJ,Wolfkiel CJ,Veselik K,Roig E,Chomka EV,Brundage BH

更新日期：1991-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The vascular opacification characteristics of a new nonionic, dimeric contrast agent, iodixanol, have been compared with a nonionic, monomeric agent, iohexol, using ultrafast computed tomography (UFCT). METHODS:In 10 experiments with mongrel dogs, the contrast agents were alternately injected ...

journal_title：Investigative radiology

authors： Gould R,Brasch RC,Sievers R,Baxter A,Aicher K

更新日期：1992-12-01 00:00:00

abstract：:Because of a need to correlate pulmonary microvascular changes with physiologic data during lung injury, in vitro and in vivo pulmonary capillary microangiography was performed on normal dogs and those subjected to oleic acid injury and glass bead microembolization. During these studies, no significant differences wer...

journal_title：Investigative radiology

authors： Clark RL,Friedman M,Kwock L,Zaremba J

更新日期：1983-01-01 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：:A diatrizoate compound (Renografin-76) and low osmolality Hexabrix were compared in a double-blind study of 50 adults undergoing arteriographic examination. Subjective and objective assessment of pain reaction for each contrast injection rated lower overall for Hexabrix. Discomfort associated with Renografin was great...

journal_title：Investigative radiology

authors： Barth KH,Mertens MA

更新日期：1984-11-01 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：OBJECTIVE:Though functional intravascular parameters such as blood velocity and direction of blood flow are available via imaging modalities such as Doppler ultrasound and phase contrast magnetic resonance imaging, such quantitative information is not yet supported by computed tomography (CT). In this study, we examine...

journal_title：Investigative radiology

authors： Barfett JJ,Fierstra J,Mikulis DJ,Krings T

更新日期：2010-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors differentiate acute tubular necrosis from transplant rejection in patients with delayed kidney graft function using gadolinium (Gd)-DTPA enhanced magnetic resonance (MR) imaging. METHODS:Twenty-four patients after renal transplantation (10 with normal graft function, 14 with delaye...

journal_title：Investigative radiology

authors： Preidler KW,Szolar D,Schreyer H,Ebner F,Kern R,Holzer H,Horina JH

更新日期：1996-06-01 00:00:00

abstract：:Erythrocytes at various concentrations were examined with a sensitive A-mode ultrasonic scanner; simultaneous measurements were made under light microscopic control. Individual erythrocytes caused weak (about 1 dB) echoes while erythrocyte aggregates (ten to 100 cells) produced stronger echoes (up to 15 dB), grossly p...

journal_title：Investigative radiology

authors： Alanen A,Kormano M

更新日期：1985-08-01 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：RATIONALE AND OBJECTIVES:The basic characteristics of BR1, a novel echo contrast agent based on stabilized sulfur hexafluoride (SF6) microbubbles have been evaluated. METHODS:The authors determined the physicochemical properties (bubble concentration, bubble size distribution, resistance to pressure, and stability) an...

journal_title：Investigative radiology

authors： Schneider M,Arditi M,Barrau MB,Brochot J,Broillet A,Ventrone R,Yan F

更新日期：1995-08-01 00:00:00

abstract：:Analysis of 46 sacroiliac joints removed in toto at random during routine autopsies was undertaken to define the pathologic and radiographic alterations of this joint in middle-aged and elderly patients. Each joint was sectioned, photographed and radiographed and large microscopic slides were prepared. Sacroiliac oste...

journal_title：Investigative radiology

authors： Resnick D,Niwayama G,Goergen TG

更新日期：1975-11-01 00:00:00

abstract：:The potential risk of a radiologic procedure often is compared with the potential benefit of the procedure. While risk vs. benefit analysis has been useful as a step toward increased communication and understanding among radiologists, referring physicians, and the general public, it has the disadvantage that risk and ...

journal_title：Investigative radiology

authors： Ritenour ER,Hendee WR

更新日期：1989-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the safety and pharmacokinetics of a newly developed MR contrast medium consisting of very small superparamagnetic iron oxide particles (VSOP) coated with citrate (VSOP-C184) in a clinical phase I trial. METHODS:A total of 18 healthy subjects received either VSOP-C184 (core diamete...

journal_title：Investigative radiology

authors： Taupitz M,Wagner S,Schnorr J,Kravec I,Pilgrimm H,Bergmann-Fritsch H,Hamm B

更新日期：2004-07-01 00:00:00

abstract：:The cerebrovascular toxicity of three water-soluble contrast agents with a low hypertonicity (metrizamide, ioxaglate, iopamidol) was tested. Blood-brain barrier damage after carotid injection was assessed using 32P autoradiography and fluorescent microscopy after Evans blue staining. The damage to carotid endothelium ...

journal_title：Investigative radiology

authors： Gonsette RE,Liesenborgh L

更新日期：1980-11-01 00:00:00

abstract：:The cytogenetic interactions of ionic (diatrizoate, ioxaglate) and nonionic (iohexol) contrast media (CM) with antineoplastic drugs cyclophosphamide (CPA) and carmustine (CARM) were evaluated in a rat bone marrow cell model. Male Wistar rats were anesthetized with a 6% chloral hydrate solution and divided into five gr...

journal_title：Investigative radiology

authors： Parvez Z,Moncada R,Gragasin M

更新日期：1988-05-01 00:00:00

abstract：OBJECTIVES:The aims of this study were to assess the discriminative performance of quantitative multiparametric magnetic resonance imaging (mpMRI) between prostate cancer and noncancer tissues and between tumor grade groups (GGs) in a multicenter, single-vendor study, and to investigate to what extent site-specific dif...

journal_title：Investigative radiology

authors： Maas MC,Litjens GJS,Wright AJ,Attenberger UI,Haider MA,Helbich TH,Kiefer B,Macura KJ,Margolis DJA,Padhani AR,Selnæs KM,Villeirs GM,Fütterer JJ,Scheenen TWJ

更新日期：2019-07-01 00:00:00

abstract：OBJECTIVES:To investigate image quality and interstudy reproducibility of aortic atherosclerosis imaging at 1.5 T, and to explore the impact of parallel imaging techniques at 3 T. MATERIALS AND METHODS:Institutional review board approval and informed consent were obtained. Thirty-two subjects (20 normal, 12 patients w...

journal_title：Investigative radiology

authors： Maroules CD,McColl R,Khera A,Peshock RM

更新日期：2008-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the efficacy of oral administration of cilostazol, an antithrombotic agent, for the prevention of thrombotic occlusion and intimal hyperplasia after stenting. METHODS:Single-bodied Z-stents were placed in the iliac arteries of 23 dogs. Before stenting, an embolizing coil was introd...

journal_title：Investigative radiology

authors： Kubota Y,Kichikawa K,Uchida H,Maeda M,Nishimine K,Makutani S,Sakaguchi S,Yoshioka T,Ohishi H,Kimura Y

更新日期：1995-09-01 00:00:00

abstract：:Urine samples were collected from 200 subjects undergoing intravenous pyelography. The urine histamine levels were compared with those of 132 normal control subjects, 11 subjects with systemic mastocytosis, six subjects with idiopathic anaphylaxis, and ten subjects experiencing mild anaphylactic reactions during aller...

journal_title：Investigative radiology

authors： Kaliner M,Dyer J,Merlin S,Shelton A,Greenhill A,Treadwell G,McKenna W,Lieberman P

更新日期：1984-03-01 00:00:00

abstract：:A 144cerium-induced osteosarcoma was transplanted to athymic nude rats (Han:rnu/rnu). Nineteen of the tumor-bearing animals were used to demonstrate the characteristics of the osteosarcoma on magnetic resonance imaging (MRI) in comparison with a group of nine animals that had not received any tumor transplant. The tum...

journal_title：Investigative radiology

authors： Witzel JG,Bohndorf K,Prescher A,Adam G

更新日期：1992-03-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate if pancreatic steatosis measured by proton density fat fraction (PDFF) is associated with exocrine pancreatic function defined by fecal elastase concentrations. MATERIALS AND METHODS:A total of 1458 volunteers (777 women; age range, 21-88 years) underwent magnetic re...

journal_title：Investigative radiology

authors： Kromrey ML,Friedrich N,Hoffmann RT,Bülow R,Völzke H,Weiss FU,Lerch MM,Motosugi U,Kühn JP

更新日期：2019-07-01 00:00:00

abstract：PURPOSE:To determine the reproducibility, accuracy, and predictors of accuracy of computed tomography (CT) angiography to detect and characterize coronary atherosclerotic plaque as compared with intravascular ultrasound. METHODS:Ten ex vivo human coronary arteries were imaged in a moving phantom by dual-source CT (col...

journal_title：Investigative radiology

authors： van der Giessen AG,Toepker MH,Donelly PM,Bamberg F,Schlett CL,Raffle C,Irlbeck T,Lee H,van Walsum T,Maurovich-Horvat P,Gijsen FJ,Wentzel JJ,Hoffmann U

更新日期：2010-11-01 00:00:00

abstract：:Eye position recordings made while radiologists searched chest images for lung nodules showed that regions falsely reported positive or suspicious received prolonged visual attention. Correlation of regional fixation dwell time with independent ratings of image features indicated that more than 90% of false-positive d...

journal_title：Investigative radiology

authors： Kundel HL,Nodine CF,Krupinski EA

更新日期：1989-06-01 00:00:00

abstract：OBJECTIVES:To test the feasibility of combining inner-volume imaging (IVI) techniques with conventional multishot periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) techniques for targeted-PROPELLER magnetic resonance imaging. MATERIALS AND METHODS:Perpendicular section-selective ...

journal_title：Investigative radiology

authors： Deng J,Larson AC

更新日期：2009-08-01 00:00:00

abstract：BACKGROUND:Nephrogenic systemic fibrosis (NSF) has been related to the use of gadolinium-based contrast agents (GBCAs) in patients undergoing dialysis. The Prospective Fibrose Nephrogénique Systémique study, a French prospective study supported by the French drug regulatory agency (Agence Nationale de Sécurité du Médic...

journal_title：Investigative radiology

authors： Amet S,Launay-Vacher V,Clément O,Frances C,Tricotel A,Stengel B,Gauvrit JY,Grenier N,Reinhardt G,Janus N,Choukroun G,Laville M,Deray G

更新日期：2014-02-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate the impact on metal artifacts and dose efficiency of using a tin filter in combination with high-energy threshold (TH) images of a photon-counting detector (PCD) computed tomography (CT) system. MATERIALS AND METHODS:A 3D-printed spine with pedicle screws was scanned...

journal_title：Investigative radiology

authors： Zhou W,Bartlett DJ,Diehn FE,Glazebrook KN,Kotsenas AL,Carter RE,Fletcher JG,McCollough CH,Leng S

更新日期：2019-04-01 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:To evaluate different vein graft-coated stent systems in the endovascular treatment of experimental arteriovenous fistulae (AVF) in a canine model. METHODS:Bilateral carotid-to-external jugular vein AVF were created. Two balloon-expandable tantalum stents (Strecker stent), two self-expanding n...

journal_title：Investigative radiology

authors： Schellhammer F,Wahkloo AK,Nagursky H,Schumacher M

更新日期：1999-01-01 00:00:00