Characterization of ultrasmall magnetite [correction of paramagnetic magnetite] particles as superparamagnetic contrast agents in MRI.

abstract：:Surgical resection is the standard of care for colorectal metastases isolated to the liver. However, only 10-25% of the patients are eligible for resection because of extent and location of the disease in the liver or concurrent medical conditions. Image-guided radiofrequency (RF) ablation is a minimally invasive tech...

journal_title：Investigative radiology

authors： Lencioni R,Crocetti L,Cioni D,Della Pina C,Bartolozzi C

更新日期：2004-11-01 00:00:00

abstract：OBJECTIVES:Thermal dose in tumor tissue is a key factor for regional hyperthermia (HT) combined with chemotherapy and for drug delivery using thermosensitive liposomes (TSL). It influences therapy outcome, affects the accumulation of liposomes, and triggers the content release from TSL in the target tissue. For the dev...

journal_title：Investigative radiology

authors： Peller M,Schwerdt A,Hossann M,Reinl HM,Wang T,Sourbron S,Ogris M,Lindner LH

更新日期：2008-12-01 00:00:00

abstract：:Twenty-six patients who had received 43 grafts were studied before and after coronary artery vein bypass surgery. Cine ventriculograms taken in the right anterior oblique projection were analyzed and regional ejection fractions calculated. Single and multiple grafts were considered separately as were thrombosed and pa...

journal_title：Investigative radiology

authors： Martin EC,Wixson D,Baltaxe HA

更新日期：1977-05-01 00:00:00

abstract：:The ideal contrast agent in patients suspected of having gastrointestinal perforation is an iso-osmolar, or nearly iso-osmolar substance, that causes no peritoneal reaction. Iopamidol is a nonionic water-soluble contrast medium that may be considered in such situations. Intraperitoneal injections of ionic and nonionic...

journal_title：Investigative radiology

authors： Ferrante SL,Schreiman JS,Rouse JW,Rysavy JA,Cheng SC,Frick MP

更新日期：1990-02-01 00:00:00

abstract：:The last two decades have witnessed tremendous strides in the evolution of acceptable and successful methods of prosthetic replacement for the arthritic joint. By and large, these techniques are predictable and durable, though not always to the complete satisfaction of the patient and surgeon. Despite the recent empha...

journal_title：Investigative radiology

authors： Volz RG,Benjamin JB

更新日期：1990-01-01 00:00:00

abstract：:A patient, suffering a severe anaphylactoid reaction to contrast material injected for an intravenous pyelogram, developed a consumption coagulopathy and evidence of complement activation. Precontrast complement values suggested that the patient had been processing complement via the classical pathway, perhaps as a co...

journal_title：Investigative radiology

authors： Lasser EC,Lang JH,Lyon SG,Hamblin AE

更新日期：1980-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:This study was conducted to determine whether significant reduction in radiation dose (250 mAs-->50 mAs), in chest computed tomography (CT) using volume acquisition affects image quality or the detectability of pathologic findings in the lung and mediastinum. METHODS:Phantom studies were condu...

journal_title：Investigative radiology

authors： Takahashi M,Maguire WM,Ashtari M,Khan A,Papp Z,Alberico R,Campbell W,Eacobacci T,Herman PG

更新日期：1998-02-01 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：RATIONALE AND OBJECTIVES:The capability of an indirect computed tomographic lymphography (CT-LG) using a nonionic monometric contrast medium iopamidol for visualizing breast lymphatic pathways was preliminarily tested. MATERIALS AND METHODS:In 10 female dogs, a total of 0.5 and 1 mL of undiluted iopamidol was injected...

journal_title：Investigative radiology

authors： Suga K,Ogasawara N,Yuan Y,Okada M,Matsunaga N,Tangoku A

更新日期：2003-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of the study was to examine the effects of azelastine on proliferation, clonogenic activity, cell-cycle, and migration of human aortic smooth-muscle cells (haSMCs) in vitro. METHODS:HaSMCs were treated for 4 days with azelastine (1 micromol/L, 25 micromol/L, 50 micromol/L). Half of the...

journal_title：Investigative radiology

authors： Schöber W,Wiskirchen J,Kehlbach R,Gebert R,Rodegerdts E,Betsch A,Johst U,Feuls R,Claussen CD,Duda SD

更新日期：2002-05-01 00:00:00

abstract：:The feasibility of control of traumatic hepatic hemorrhage by angiographic transcatheter embolization was investigated. Bleeding sites were created in the livers of each of twelve dogs, and the hepatic artery was occluded with Gelfoam. Successful control of bleeding was demonstrated by postembolization angiography in ...

journal_title：Investigative radiology

authors： Tyler T,Rosenbaum HD

更新日期：1978-01-01 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：:Previous work has shown that Fe3+, when administered in the proper dose and time sequence, increases the tumor uptake of gallium-67 (67Ga) while decreasing its uptake by normal tissues. The purpose of this series of experiments was to examine further the postulate that the false carrier effect is mediated at the cellu...

journal_title：Investigative radiology

authors： Stern PH,Halpern SE,Hagan PL,Chen A

更新日期：1982-07-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to optimize computed tomography (CT) surveillance of skeletal metastases in patients with breast cancer through the use of osseous subtraction maps between baseline and follow-up examinations created by a novel software algorithm. The new postprocessing algorithm segments the origina...

journal_title：Investigative radiology

authors： Horger M,Thaiss WM,Wiesinger B,Ditt H,Fritz J,Nikolaou K,Kloth C

更新日期：2017-02-01 00:00:00

abstract：:The interdisciplinary approach to medical education has often been deficient in medical school curricula. Because of the nonintegrated approach to medical education, problem solving capabilities are not fostered. The clinical presentation of a patient, the imaging modalities used to investigate the patient, and the ul...

journal_title：Investigative radiology

authors： Oldham SA,Jacobson F

更新日期：1986-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors synthesized and tested a novel hydrogel system proposed for use in extra- and intravascular radiologic interventions, such as chemoembolizations and embolizations, and as a vehicle for sustained drug release. MATERIALS:The material was specifically designed to meet the prerequisite...

journal_title：Investigative radiology

authors： Weissleder R,Bogdanov A,Frank H,Nossiff N,Bogdanova A,Schaffer BK,Brady T,Wittenberg J

更新日期：1993-12-01 00:00:00

abstract：OBJECTIVES:The purpose of our study was to assess the potential for radiation dose reduction in digital postinterventional digital mammograms after marker placement. MATERIALS AND METHODS:One hundred consecutive cases of marker placement (hook-wire localization or postbiopsy clip marker placement), with 200 full-field...

journal_title：Investigative radiology

authors： Riedl CC,Jaromi S,Floery D,Pfarl G,Fuchsjaeger MH,Helbich TH

更新日期：2005-06-01 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：OBJECTIVES:The objectives of this study were to assess the feasibility of magnetic resonance cholangiography (MRC) using biliary-secreted gadoxetic acid at 7 T and to compare it with T2-weighted (w) MRC at 3 T. MATERIALS AND METHODS:Ten healthy volunteers were examined on a 7-T whole-body magnetic resonance system. T2...

journal_title：Investigative radiology

authors： Fischer A,Kraff O,Orzada S,Nensa F,Schäfer LC,Ladd ME,Umutlu L,Lauenstein TC

更新日期：2014-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Our purpose was to validate contrast-enhanced computed tomography (CECT)-derived quantitative measures of perfusion and permeability against gold standard techniques of fluorescent microspheres and Evan's Blue dye, respectively. MATERIALS AND METHODS:Normal and tumor-bearing (R3230AC) Fischer ...

journal_title：Investigative radiology

authors： Pollard RE,Garcia TC,Stieger SM,Ferrara KW,Sadlowski AR,Wisner ER

更新日期：2004-06-01 00:00:00

abstract：:Magnetic resonance angiography (MRA) for application in the musculoskeletal system is progressing at a rapid pace. The clinical role of this new technique is still being developed, although a number of uses have already become well recognized, and MRA is diffusing into clinical practice. This article describes the bas...

journal_title：Investigative radiology

authors： Harms SE,Flamig DP

更新日期：1992-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:It is widely believed that down-sizing catheters, and possibly needles, will decrease damage to the entry vessel in the performance of angiography. The purposes of this in vitro experiment are to determine if smaller needles produce less arterial wall damage than larger needles and to assess th...

journal_title：Investigative radiology

authors： Smith DC,Hamlin JA,Jensen DA,Pappas JM,Westengard JC,Saukel GW

更新日期：1992-10-01 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：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：PURPOSE:The aim of this study was to compare qualitative and quantitative image quality and geometric distortion of 4 magnetic resonance diffusion-weighted imaging (DWI) sequences of the prostate using comparable imaging parameters and similar acquisition times. METHODS AND MATERIALS:Axial T2-weighted turbo spin echo ...

journal_title：Investigative radiology

authors： Stocker D,Manoliu A,Becker AS,Barth BK,Nanz D,Klarhöfer M,Donati OF

更新日期：2018-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To develop a simple and robust helium3 polarization system dedicated to small animal imaging. To demonstrate the potential of helium3 imaging for pulmonary ventilation and perfusion studies. METHODS:A home-built polarization system based on spin-exchange technique was used. This system was app...

journal_title：Investigative radiology

authors： Stupar V,Berthezène Y,Canet E,Tournier H,Dupuich D,Crémillieux Y

更新日期：2003-06-01 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：:A prospective, randomized study of the potential protective effects of corticosteroids administered as pretreatment against contrast material (CM) reactions is reported. Patients (n = 6,763) from multiple institutions received either a single dose of steroids (32 mg of oral methylprednisolone, approximately 2 hours be...

journal_title：Investigative radiology

authors： Lasser EC,Berry CC,Talner LB,Santini LC,Lang EK,Gerber FH,Stolberg HO

更新日期：1988-09-01 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：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