Contrast-enhanced MRI of tumors. Comparison of Gd-DTPA and a macromolecular agent.

abstract：RATIONALE AND OBJECTIVE:The authors performed a retrospective study in ultrasound to investigate new aspects in the sonomorphology of lymph node metastases of the neck. In this study, it could be demonstrated the first time that the histologic characteristics of the metastases determine the sonographic appearance. In a...

journal_title：Investigative radiology

authors： Mäurer J,Willam C,Steinkamp HJ,Knollmann FD,Felix R

更新日期：1996-09-01 00:00:00

abstract：:We have examined the effect of dose on contrast medium-induced reductions in glomerular filtration in anesthetized rabbits. The fraction of renal plasma flow that is filtered, the filtration fraction, was directly measured by the renal arteriovenous difference method using technetium-99m (99mTc) (Sn) DTPA as the trace...

journal_title：Investigative radiology

authors： Harvey LA,Caldicott WJ

更新日期：1983-09-01 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: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：:A method of teaching radiology residents by identification of general and specific objectives to be accomplished during each time segment of the four-year training program has been developed. The objectives are incorporated into an educational contract that is signed by the resident and rotation director at the beginn...

journal_title：Investigative radiology

authors： Howland WJ,Marler D,Bosshart D

更新日期：1986-12-01 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：RATIONALE AND OBJECTIVES:To develop a new automated calibration method for vessel measurements in vascular x-ray images. METHODS:Radiopaque marker bands mounted equidistantly on a small catheter were acquired in vitro at five image intensifier (II) sizes in x-ray projection images. The positions of the marker centers ...

journal_title：Investigative radiology

authors： Van Assen HC,Vrooman HA,Egmont-Petersen M,Bosch HG,Koning G,Van Der Linden EL,Goedhart B,Reiber JH

更新日期：2000-04-01 00:00:00

abstract：PURPOSE:To evaluate the feasibility of ex vivo ablation implementing a cryo-based internally cooled bipolar radiofrequency (RF) applicator and to determine the influence of power and gas pressure on the size and shape of the resulting ablation zones. MATERIALS AND METHODS:Two hundred twenty-five ablations were perform...

journal_title：Investigative radiology

authors： Rempp H,Voigtländer M,Clasen S,Kempf S,Neugebauer A,Schraml C,Schmidt D,Claussen CD,Enderle MD,Goldberg SN,Pereira PL

更新日期：2009-12-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to explore the impact of dynamic contrast-enhanced (DCE) computer tomography (CT) as a biomarker in metastatic renal cell carcinoma (mRCC). MATERIALS AND METHODS:Twelve patients with favorable or intermediate Memorial Sloan Kettering Cancer Center risk group and clear cell mRCC par...

journal_title：Investigative radiology

authors： Mains JR,Donskov F,Pedersen EM,Madsen HH,Rasmussen F

更新日期：2014-09-01 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: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：:The problem of inhomogeneous mixing encountered during hepatic artery (HA) chemotherapy infusion was assessed and a practical solution examined. A glass model of the human HA distribution was used to determine mixing homogeneity of low flow (1.4 mL/minute) dye infusion into pulsatile flow (280-300 mL/minute) of a flui...

journal_title：Investigative radiology

authors： Barth KH,Lutz RJ,Kremers PW,Miller DL

更新日期：1988-07-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the diagnostic value and safety of the contrast agent gadoterate meglumine (Gd-DOTA, DOTAREM, Guerbet, Roissy CdG Cedex, France) in the setting of a postmarketing surveillance study. MATERIALS AND METHODS:Between January 2004 and October 2005, radiologists in 61 radiol...

journal_title：Investigative radiology

authors： Herborn CU,Honold E,Wolf M,Kemper J,Kinner S,Adam G,Barkhausen J

更新日期：2007-01-01 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：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：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：:An ultrasound phantom was constructed simulating fetal femurs in amniotic fluid. Bones of 26, 36, 50, 58, and 70 mm, representative of gestational ages ranging from 17 to 36 weeks, were scanned with mechanical sector, phased sector, and linear array systems (ATL, Diasonics, Acuson, and GE). Measurements were made with...

journal_title：Investigative radiology

authors： Gamba JL,Bowie JD,Dodson WC,Hedlund LW

更新日期：1985-05-01 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：RATIONALE AND OBJECTIVES:Interstitial laser photocoagulation (ILP) causes localized tissue necrosis. This study was performed to determine 1) whether the changes seen on computed tomography (CT) correspond to the necrosis pathologically, and 2) which CT technique best shows the necrosis. METHODS:Eighteen Wistar rats h...

journal_title：Investigative radiology

authors： Amin Z,Thurrell W,Spencer GM,Harries SA,Grant WE,Bown SG,Lees WR

更新日期：1993-12-01 00:00:00

abstract：:A considerable amount of concern has been felt recently for the risk of carcinogenesis from x-rays to scoliosis patients. This paper re-evaluates risk in quantitative terms by using some data measured by us and other data recently published in the literature. The risks are considerably smaller than had been estimated ...

journal_title：Investigative radiology

authors： Rao PS,Gregg EC

更新日期：1984-01-01 00:00:00

abstract：OBJECTIVES:Magnetic resonance-guided high-intensity focused ultrasound (MR-HIFU) is a method to heat lesions noninvasively to a stable, elevated temperature and a well-suited method to induce local hyperthermia (41°C-43°C) in deep-seated tissues. Magnetic Resonance (MR) imaging provides therapy planning on anatomical i...

journal_title：Investigative radiology

authors： Kneepkens E,Heijman E,Keupp J,Weiss S,Nicolay K,Grüll H

更新日期：2017-10-01 00:00:00

abstract：OBJECTIVES:Multidetector-row computed tomography coronary images are usually analyzed in mid-diastole (MD). Because of slow coronary motion also in end-systole (ES), we evaluated the impact on image quality of including ES images and defined an efficient reconstruction protocol. MATERIAL AND METHODS:In 50 coronary mul...

journal_title：Investigative radiology

authors： Sanz J,Rius T,Kuschnir P,Fuster V,Goldberg J,Ye XY,Wisdom P,Poon M

更新日期：2005-03-01 00:00:00

abstract：OBJECTIVE:To investigate the effect of saline chase injected at 2 different rates on computed tomography (CT) angiography. MATERIALS AND METHODS:This study was approved by our institutional animal study committee. Three injection protocols were used; contrast injection (24 mL, 0.8 mL/s) without saline chase (protocol ...

journal_title：Investigative radiology

authors： Lee CH,Goo JM,Bae KT,Lee HJ,Kim KG,Chun EJ,Park CM,Im JG

更新日期：2007-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Hepatocellular carcinomas (HCCs) usually consist of components of different histologic grade. Using surgically resected specimens, the authors obtained high-resolution magnetic resonance (MR) images and studied the relationship between histologic grade of HCCs and MR signal intensity. METHOD:I...

journal_title：Investigative radiology

authors： Inoue E,Kuroda C,Narumi Y,Fujita M,Kadota T,Kuriyama K,Yoshioka H,Ishiguro S,Sasaki Y,Imaoka S

更新日期：1993-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To assess the abilities of dynamic diffusion-weighted MRI to demonstrate the effects in vivo of a high-viscosity iodinated contrast agent on medullary and cortical blood flow in the rat kidney. METHODS:Dynamic diffusion-weighted, echoplanar MR images obtained from five b-value single-shot acqu...

journal_title：Investigative radiology

authors： Laissy JP,Menegazzo D,Dumont E,Piekarski JD,Karila-Cohen P,Chillon S,Schouman-Claeys E

更新日期：2000-11-01 00:00:00

abstract：PURPOSE:To evaluate the technical feasibility of high spatial resolution contrast-enhanced magnetic resonance angiography (CE-MRA) with highly accelerated parallel acquisition at 3.0 T using a 32-channel phased array coil, and a high relaxivity contrast agent. MATERIALS AND METHODS:Ten adult healthy volunteers (5 men,...

journal_title：Investigative radiology

authors： Nael K,Fenchel M,Krishnam M,Finn JP,Laub G,Ruehm SG

更新日期：2007-06-01 00:00:00

abstract：:The morphologic changes in healthy rat kidneys (n = 102) were studied 2 or 48 hours after intravenous injection of 1 or 3 g iodine (I)/kg of high-osmolality diatrizoate, low-osmolality iopromide and iohexol, or iso-osmolality iotrolan, as well as after 0.2 or 0.6 g/kg of the high-osmolality magnetic resonance contrast...

journal_title：Investigative radiology

authors： Tervahartiala P,Kivisaari L,Kivisaari R,Virtanen I,Standertskjöld-Nordenstam CG

更新日期：1991-10-01 00:00:00

abstract：:The purpose of this study was to establish the proton NMR relaxation times of collapsed but otherwise normal lung tissue and to determine whether an inflammatory process within a collapsed lung can be detected by alterations in relaxation times. The lungs of three groups of rabbits were studied: group A (n = 7) had a ...

journal_title：Investigative radiology

authors： Huber DJ,Kobzik L,Melanson G,Adams DF

更新日期：1985-08-01 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：:Experimental pulmonary arteritis was produced in rabbits by intravenous injection of alveolar macrophages from donor rabbits. These animals, along with matched controls, were studied with pulmonary angiography to test the hypothesis that angiography could detect the vasculitic process in life. The animals were then sa...

journal_title：Investigative radiology

authors： Hicken P,Hogg JC,Pare PD

更新日期：1980-07-01 00:00:00