Changes in portal hemodynamics and acute rejection in the first 2 weeks after orthotopic liver transplantation. A prospective Doppler ultrasound study.

abstract：OBJECTIVE:We sought to evaluate the influence of tube voltage on the visualization of acute myocardial infarction (MI) in cardiac multislice spiral computed tomography (MSCT). MATERIALS AND METHODS:Acute MI was induced in 12 domestic pigs by a 45-minute balloon occlusion of the left anterior descending artery. Delayed...

journal_title：Investigative radiology

authors： Mahnken AH,Bruners P,Mühlenbruch G,Emmerich M,Hohl C,Günther RW,Wildberger JE

更新日期：2007-02-01 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

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：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：OBJECTIVE:To investigate the feasibility of an 80-kVp protocol using a moderate concentration contrast material (MC-CM) for cerebral computed tomography angiography by comparison with a conventional 120-kVp protocol using a high concentration contrast material (HC-CM). MATERIALS AND METHODS:Attenuation values and sign...

journal_title：Investigative radiology

authors： Cho ES,Chung TS,Oh DK,Choi HS,Suh SH,Lee HK,Lee KH

更新日期：2012-02-01 00:00:00

abstract：:Due to the small size of the bronchial arteries, the bronchial circulation is difficult to study and remains poorly understood. We have utilized single photon emission computed tomography (SPECT) as a noninvasive means of studying the bronchial circulation. Imaging studies were performed in sheep before and after the ...

journal_title：Investigative radiology

authors： Chiles C,Newman GE,Blinder RA

更新日期：1990-01-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to evaluate the feasibility of a computed tomography (CT) protocol enabling the visualization of the prostatic artery (PA) before prostatic artery embolization (PAE) in benign prostatic hyperplasia, which provides quantitative perfusion information of the prostate gland. MATERIALS ...

journal_title：Investigative radiology

authors： Kobe A,Puippe G,Klotz E,Alkadhi H,Pfammatter T

更新日期：2019-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Because of the greatly increased cost of nonionic, low-osmolar contrast material, some practitioners reserve its use for patients at high risk for an adverse contrast reaction. The authors attempt to evaluate the proportion of low-risk outpatients--when offered a choice between the more expensi...

journal_title：Investigative radiology

authors： Hopper KD,Matthews YL

更新日期：1993-04-01 00:00:00

abstract：:Lymphangiograms of canine cardiac and pulmonary efferent mediastinal lymphatics were made by cannulation and injection of Ethiodol. Injections were made singly and serially. The mediastinal lymphatics and lymph nodes, which constitute the pathways of drainage of the heart and lungs, were delineated from the point of c...

journal_title：Investigative radiology

authors： Leeds SE,Uhley HN,Meister RB

更新日期：1979-01-01 00:00:00

abstract：:A radiographic method for use in the closed-chest dog is described which allows the quantitation of segmental mechanical performance. Previous work has shown that the area of the pressure-length loop (an approximation of a stress-strain integral) is a useful measure of the mechanical work performed by a segment of myo...

journal_title：Investigative radiology

authors： Ringertz HG,Carlsson E,Tyberg JV

更新日期：1976-11-01 00:00:00

abstract：:Early detection of pancreatic ductal adenocarcinoma (PDAC) represents the most significant step toward the treatment of this aggressive lethal disease. Previously, we engineered a preclinical Thy1-targeted microbubble (MBThy1) contrast agent that specifically recognizes Thy1 antigen overexpressed in the vasculature of...

journal_title：Investigative radiology

authors： Bam R,Daryaei I,Abou-Elkacem L,Vilches-Moure JG,Meuillet EJ,Lutz A,Marinelli ER,Unger EC,Gambhir SS,Paulmurugan R

更新日期：2020-11-01 00:00:00

abstract：OBJECTIVE:Computed tomography (CT) and magnetic resonance imaging (MRI) are introduced as an alternative to traditional autopsy. The purpose of this study was to investigate their accuracy in mass estimation of liver and spleen. METHODS:In 44 cases, the weights of spleen and liver were estimated based on MRI and CT da...

journal_title：Investigative radiology

authors： Jackowski C,Thali MJ,Buck U,Aghayev E,Sonnenschein M,Yen K,Dirnhofer R,Vock P

更新日期：2006-07-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the effect of age and number of previous injections of gadodiamide on the signal intensity of unenhanced T1-weighted (T1w) images of the dentate nucleus and globus pallidus in a large population. MATERIALS AND METHODS:A large, single-center retrospective population sur...

journal_title：Investigative radiology

authors： Quattrocchi CC,Errante Y,Mallio CA,Marinelli L,LoVullo G,Giannotti G,Della Sala SW,van der Molen AJ,Beomonte Zobel B

更新日期：2018-04-01 00:00:00

abstract：:Recent experimental data underlies the role of hypoxic tubular injury in the pathophysiology of radiocontrast nephropathy. Although systemic transient hypoxemia, increased blood viscosity, and a leftward shift of the oxygen-hemoglobin dissociation curve may all contribute to intrarenal hypoxia, imbalance between oxyge...

journal_title：Investigative radiology

authors： Heyman SN,Reichman J,Brezis M

更新日期：1999-11-01 00:00:00

abstract：:Advances in the field of magnetic resonance (MR) as it pertains to clinical diagnostic radiology are examined in this review on the basis of publications in Investigative Radiology over the past 2 years (2005-2006). The articles published during that timeframe are discussed, organizationally wise, by anatomic region w...

journal_title：Investigative radiology

authors： Runge VM

更新日期：2006-12-01 00:00:00

abstract：:The extent to which various concentrations of the paramagnetic metal ions [gadolinium (III), manganese (II), chromium (III), iron (III), nickel (II), copper (II), and cobalt (II)] affect proton magnetic relaxation times of distilled water, 4% human serum albumin (HSA), and dog plasma was studied in vitro. The pH of wa...

journal_title：Investigative radiology

authors： Barnhart JL,Berk RN

更新日期：1986-02-01 00:00:00

abstract：OBJECTIVES:In late December 2019, an outbreak of coronavirus disease (COVID-19) in Wuhan, China was caused by a novel coronavirus, newly named severe acute respiratory syndrome coronavirus 2. We aimed to quantify the severity of COVID-19 infection on high-resolution chest computed tomography (CT) and to determine its r...

journal_title：Investigative radiology

authors： Xiong Y,Sun D,Liu Y,Fan Y,Zhao L,Li X,Zhu W

更新日期：2020-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To assess the potential of magnetic resonance imaging (MRI) for evaluating the evolution of tumor necrosis, the authors evaluated 28 VX2 carcinomas inoculated in the thigh muscles of rabbits. METHODS:MRI of VX2 carcinomas at 2.0 T was done with spin-echo technique 1 week (14 tumors) and 3 week...

journal_title：Investigative radiology

authors： Choi BI,Lee DH,Han MC

更新日期：1993-01-01 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：:The authors conducted an observer performance study to compare breast lesion detection of conventional mammography (CM) with teleradiology (TE) transmitted mammograms. One hundred four abnormal, single-projection mammographic images were transmitted by teleradiology. Abnormalities included 11 cases with skin thickenin...

journal_title：Investigative radiology

authors： Fajardo LL,Yoshino MT,Seeley GW,Hunt R,Hunter TB,Friedman R,Cardenas D,Boyle R

更新日期：1990-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Indium-111 (111In)-labeled leukocyte scanning has been used frequently in patients suspected of having infections. Recently, technetium-99m hexamethylpropylene amine oxime (99mTc-HMPAO) has been used to label leukocytes. This study was undertaken to determine the distribution and dosimetry of 9...

journal_title：Investigative radiology

authors： Brown ML,Hung JC,Vetter RJ,O'Connor MK,Chowdhury S,Forstrom LA

更新日期：1994-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the feasibility of mechanical thrombectomy in occluded hemodialysis access shunts by using a newly developed 5F pigtail rotation catheter. METHODS:Thrombosed hemodialysis access shunts were simulated by clotted bovine blood in silicone tubing (diameter 6 mm). After retrograde and a...

journal_title：Investigative radiology

authors： Wildberger J,Schmitz-Rode T,Wein BB,Günther RW

更新日期：1999-07-01 00:00:00

abstract：OBJECTIVES:Over the recent years, there have been increasing concerns that exposure to gadolinium-based contrast agents (GBCAs) may be associated with retention of Gd within the skin, bones, and solid organs in patients with normal renal function, although the clinical implications of this deposition remain to be estab...

journal_title：Investigative radiology

authors： Layne KA,Wood DM,Dixon-Zegeye M,Archer JRH,Raja K,Dargan PI

更新日期：2020-07-01 00:00:00

abstract：:The authors investigated the effect on the brain of red blood cells that had been modified by contrast media. Rat blood was mixed with an equivolume of contrast media, and up to 200 microL of the mixture was infused to the internal carotid artery of the rat. Evans blue was administered intravenously to assess the inte...

journal_title：Investigative radiology

authors： Miyazawa T,Nakagawa H,Oshino N

更新日期：1989-05-01 00:00:00

abstract：:The density of trabecular bone in the os calcis has been measured in 321 subjects using a gamma ray scattering technique. In normal subjects it was shown that density could be predicted from body weight and age with a standard error of 5.6%. It was also shown that the dependence of density upon weight and age was the ...

journal_title：Investigative radiology

authors： Roberts JG,DiTomasso E,Webber CE

更新日期：1982-01-01 00:00:00

abstract：PURPOSE:We aimed to determine whether diffusion-weighted magnetic resonance imaging, by means of the apparent diffusion coefficient (ADC), is able to guide magnetic resonance-guided biopsy in patients fit for active surveillance (AS) and identify patients harboring high-grade Gleason components not suitable for AS. MA...

journal_title：Investigative radiology

authors： Somford DM,Hoeks CM,Hulsbergen-van de Kaa CA,Hambrock T,Fütterer JJ,Witjes JA,Bangma CH,Vergunst H,Smits GA,Oddens JR,van Oort IM,Barentsz JO,MR-PRIAS Collaboration Group.

更新日期：2013-03-01 00:00:00

abstract：OBJECTIVE:The objective of this study was to elucidate the mechanism of hepatic parenchyma-specific contrast of Sonazoid (microbubble contrast agent) using microscopic techniques. MATERIALS AND METHODS:Sonazoid was intravenously injected into rats to investigate the microbubble dynamics and distribution within hepatic...

journal_title：Investigative radiology

authors： Watanabe R,Matsumura M,Munemasa T,Fujimaki M,Suematsu M

更新日期：2007-09-01 00:00:00

abstract：OBJECTIVE:The aim of the study was to assess the value of in vivo T2 measurements to noninvasively quantify myocardial fibrosis in diabetic mice at 11.75 T. Diabetic cardiomyopathy is characterized by extracellular matrix alteration and microcirculation impairment. These conditions might provide electrical heterogeneit...

journal_title：Investigative radiology

authors： Bun SS,Kober F,Jacquier A,Espinosa L,Kalifa J,Bonzi MF,Kopp F,Lalevee N,Zaffran S,Deharo JC,Cozzone PJ,Bernard M

更新日期：2012-05-01 00:00:00

abstract：OBJECTIVES:Ferumoxytol, an intravenous iron supplement, can be used in off-label mode as a contrast agent in magnetic resonance imaging. The aim of this study was to assess whether ferumoxytol can be used as a marker of inflammation in animal models of acute and chronic inflammatory kidney diseases. MATERIAL AND METHO...

journal_title：Investigative radiology

authors： Budjan J,Neudecker S,Schock-Kusch D,Kraenzlin B,Schoenberg SO,Michaely HJ,Attenberger UI

更新日期：2016-02-01 00:00:00

abstract：OBJECTIVES:Demonstrate the usability of a new polyetheretherketone (PEEK)-based MR-compatible guidewire for renal artery catheterization, angioplasty, and stenting under MR-guidance using MR-visible markers, in vitro and in vivo. MATERIAL AND METHODS:The new 0.035'' guidewire with fiber-reinforced PEEK core, a soft ti...

journal_title：Investigative radiology

authors： Kos S,Huegli R,Hofmann E,Quick HH,Kuehl H,Aker S,Kaiser GM,Borm PJ,Jacob AL,Bilecen D

更新日期：2009-04-01 00:00:00