Hepatic parenchymal changes after the intraarterial injection of lipiodol in tumor-bearing rabbits.

abstract：:Comparatively new in the roentgen evaluation of infants and children, xerography would appear to be ideal for portraying the pediatric airway. Since the radiation dose of xerography is higher than conventional radiography, its image quality is the subject of careful scrutiny in a pediatric setting here described in 23...

journal_title：Investigative radiology

authors： Scott JR,Kramer SS,Griscom NT

更新日期：1978-07-01 00:00:00

abstract：:Observer performance in radiologic interpretation has traditionally been based upon Receiver Operating Characteristic (ROC) analysis. A statistical method that evaluates the reproducibility or consistency of radiologic interpretation is presented. Since this method is not based upon pathologic verification, it cannot ...

journal_title：Investigative radiology

authors： Herman S,DeBoer G,Rideout DF,Majesky IF

更新日期：1984-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The suitability of paramagnetic complexes as magnetic resonance contrast agents depends on various factors such as their relaxivity, stability, selectivity, and the inertness toward transmetallation by endogenous ions. The transmetallation of a series of 18 gadolinium complexes by the Zn2+ ion ...

journal_title：Investigative radiology

authors： Laurent S,Elst LV,Copoix F,Muller RN

更新日期：2001-02-01 00:00:00

abstract：OBJECTIVES:Transcatheter arterial embolization (TAE) is used for the treatment of patients with malignant liver tumors. However, the proangiogenesis effect of TAE-associated hypoxia has not been adequately studied. The goal of this study was to determine angiogenic activity in tumors subjected to TAE by evaluating the ...

journal_title：Investigative radiology

authors： Gupta S,Kobayashi S,Phongkitkarun S,Broemeling LD,Kan Z

更新日期：2006-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Dynamic contrast enhanced (DCE) MR mammography (MRM) uses tumor capillary density differences for prognosis. The heterogeneous response of permeability-surface area products (PS = Kp<-->t) was examined in mammary tumors, as a function of contrast agent size, to determine what effect ROI size mi...

journal_title：Investigative radiology

authors： Aref M,Brechbiel M,Wiener EC

更新日期：2002-04-01 00:00:00

abstract：:We developed a new, cineangiographic method to accurately measure the dynamic changes in the internal diameter of human arteries in vivo. Cine films were digitized at a spatial resolution of 4 microns/pixel, using a line image sensor. The vessel edges, with a Gaussian fit to a unilateral profile curve of the vessel, w...

journal_title：Investigative radiology

authors： Sugahara T,Yanagihara Y,Uyama C,Maeda H,Takafuchi M,Azumi T

更新日期：1989-09-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to compare power versus manual injection in bolus shape and image quality on contrast-enhanced magnetic resonance angiography (CE-MRA). MATERIALS AND METHODS:Three types of CE-MRA (head-neck 3-dimensional [3D] MRA with a test-bolus technique, thoracic-abdominal 3D MRA with a bolus-t...

journal_title：Investigative radiology

authors： Tsuboyama T,Jost G,Pietsch H,Tomiyama N

更新日期：2017-09-01 00:00:00

abstract：OBJECTIVE:Cardiac magnetic resonance imaging (MRI) at 3.0 T has recently become available and potentially provides a significant improvement of tissue contrast in T1-weighted imaging techniques relying on Gd-based contrast enhancement. Imaging at high-field strength may be especially advantageous for methods relying on...

journal_title：Investigative radiology

authors： Klumpp B,Fenchel M,Hoevelborn T,Helber U,Scheule A,Claussen C,Miller S

更新日期：2006-09-01 00:00:00

abstract：:We present a new method for evaluating in vivo changes in bone mineralization in the peripheral skeleton, using computed tomography (CT). A set of bone mineralization indices are generated from numerous CT images of the patient's distal radius. The cross-sectional anatomy displayed by the CT scan allows for separate e...

journal_title：Investigative radiology

authors： Orphanoudakis SC,Jensen PS,Rauschkolb EN,Lang R,Rasmussen H

更新日期：1979-03-01 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：:Thromboembolic complications occurring during angiography may result from a number of different causes. Catheters and guidewires can interact with blood to form thrombi; this tendency is related to wall defects and the chemical composition and structural characteristics of the catheters and guidewires. Nonthrombic sou...

journal_title：Investigative radiology

authors： Kido DK,King PD,Manzione JV,Simon JH

更新日期：1988-11-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to assess whether the recently developed method of grating-based x-ray dark-field radiography can improve the diagnosis of pulmonary emphysema in vivo. MATERIALS AND METHODS:Pulmonary emphysema was induced in female C57BL/6N mice using endotracheal instillation of porcine pancr...

journal_title：Investigative radiology

authors： Meinel FG,Yaroshenko A,Hellbach K,Bech M,Müller M,Velroyen A,Bamberg F,Eickelberg O,Nikolaou K,Reiser MF,Pfeiffer F,Yildirim AÖ

更新日期：2014-10-01 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：RATIONALE AND OBJECTIVES:The authors detect activation in the auditory cortex during cochlear electrical stimulation in deaf patients using functional magnetic resonance (MR) imaging. METHODS:Stimulating electrode was inserted gently under local anesthesia close to the round window membrane of the cochlea in seven coc...

journal_title：Investigative radiology

authors： Berthezène Y,Truy E,Morgon A,Giard MH,Hermier M,Franconi JM,Froment JC

更新日期：1997-05-01 00:00:00

abstract：:The use of microbubble contrast agents for general tissue delineation and perfusion enjoys steady interest in ultrasound imaging. Microbubbles as contrast materials require a small dosage and show excellent detection sensitivity. Targeting ligands on the surface of microbubbles permit the selective accumulation of the...

journal_title：Investigative radiology

authors： Klibanov AL

更新日期：2006-03-01 00:00:00

abstract：:Various water soluble contrast media (WSCM) were injected subcutaneously into 970 hind feet of 485 rats. Gross morphologic changes were seen after the injection and analyzed as a function of various physicochemical characteristics of WSCM. The WSCM of larger volume, higher osmolality, higher iodine content, and meglum...

journal_title：Investigative radiology

authors： Kim SH,Park JH,Kim YI,Kim CW,Han MC

更新日期：1990-06-01 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：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：RATIONALE AND OBJECTIVES:We investigated whether it is possible to investigate degenerative changes in human tissue on a sub-100-microm resolution scale not only on special high-field small-bore MR-microscopy systems but also on a 3T whole-body MR-scanner. METHODS:Spin-spin relaxation, proton density, and diffusion mi...

journal_title：Investigative radiology

authors： Berg A,Sailer J,Rand T,Moser E

更新日期：2003-07-01 00:00:00

abstract：:Dense cavitary "photopenia" was observed on 21 of 200 consecutive stress perfusion scintigrams. A prominent finding in many cases, it sometimes occupied only a portion of the region overlying the ventricular cavity, was often seen in some projections and not others, and was frequently adjacent to myocardial perfusion ...

journal_title：Investigative radiology

authors： Dae M,Canhasi B,Botvinick E,Olvera S,Schechtmann N,Engelstad B,Hattner R,Schiller N,O'Connell W,Faulkner D

更新日期：1985-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors determine the relative effect of soft-tissue compartments, body fat (percent [%Bfat] and weight [Bfat kg]) and fat-free mass (FFM kg), on measurements of ultrasound bone velocity (UBV m/second). METHODS:The authors measured UBV in proximal phalanxes and body fat and fat-free mass b...

journal_title：Investigative radiology

authors： Gómez M,Aguado F,Manuel J,Menéndez JM,Revilla M,Villa LF,Cortés J,Rico H

更新日期：1997-10-01 00:00:00

abstract：:There are a number of sonographic findings seen in fibroadenoma of the breast. In a retrospective study, we examined the biopsy results of 59 masses given the sonographic diagnosis of fibroadenoma. We also reviewed the sonograms of an additional 26 biopsy-proven fibroadenomas that were not diagnosed as such with ultra...

journal_title：Investigative radiology

authors： Jackson VP,Rothschild PA,Kreipke DL,Mail JT,Holden RW

更新日期：1986-01-01 00:00:00

abstract：OBJECTIVES:Volumetric magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) is a completely noninvasive image-guided thermal ablation technique. Recently, there has been growing interest in the use of MR-HIFU for noninvasive ablation of malignant tumors. Of particular interest for noninvasive ablation...

journal_title：Investigative radiology

authors： Wijlemans JW,Deckers R,van den Bosch MA,Seinstra BA,van Stralen M,van Diest PJ,Moonen CT,Bartels LW

更新日期：2013-06-01 00:00:00

abstract：OBJECTIVES:Magnetic resonance imaging guidance has been sporadically reported for renal tumor cryoablation (CA); therefore, clinical experience with this modality is still limited.The aim of this study is to retrospectively analyze our 10-year experience with renal tumor CA performed on a 1.5 T magnetic resonance imagi...

journal_title：Investigative radiology

authors： Cazzato RL,De Marini P,Leonard-Lorant I,Leclerc L,Auloge P,Tricard T,Dalili D,Garnon J,Lang H,Gangi A

更新日期：2020-09-04 00:00:00

abstract：PURPOSE:To prove the concept of peripheral continuous table movement (CTM) MR-angiography (MRA) in combination with high spatial and temporal resolution time-resolved TWIST-MRA in a single MR-examination at 3.0 T with a single dose (0.1 mmol/kg) of gadobutrol in total. MATERIALS AND METHODS:We included 22 consecutive ...

journal_title：Investigative radiology

authors： Voth M,Haneder S,Huck K,Gutfleisch A,Schönberg SO,Michaely HJ

更新日期：2009-09-01 00:00:00

abstract：:The purpose of our investigation was to determine whether iopanoyl glucuronide, the major metabolite of iopanoic acid (Telepaque), undergoes hydrolysis by bacterial beta-glucuronidase in dogs. The conjugated compound was identified and quantitated by elemental analysis, fluorescent excitation analysis, thin-layer chro...

journal_title：Investigative radiology

authors： Thoeni RF,Goldberg HI,Moss AA,Lin SK,Brito AC

更新日期：1978-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Ureteric jet index (UJI), a newly developed technique derived from color Doppler ultrasonography, may hold promise in evaluating renal function because of its ability to evaluate individual renal function and the use of nonionizing radiation. To assess the usefulness of UJI, the authors in this...

journal_title：Investigative radiology

authors： Chiu NT,Wu CC,Yao WJ,Tu DG,Lee BF,Tong YC,Pan CC

更新日期：1999-08-01 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: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：RATIONALE AND OBJECTIVES:To assess the influence of injection rates and volumes on the arrival time of contrast material (CM) in the common carotid artery, the jugular vein and the resulting arterial-venous transit time. Additionally the relationship between injection parameters and the extent of a CM plateau was evalu...

journal_title：Investigative radiology

authors： Herold T,Paetzel C,Völk M,Bachthaler M,Zorger N,Feuerbach S,Strotzer M,Lenhart M

更新日期：2004-02-01 00:00:00