Evaluation of noninvasive follow-up methods for the detection of intracranial in-stent restenosis: a phantom study.

abstract：UNLABELLED:Szapiro D, Ghaye B, Willems V, et al. Evaluation of CT time-density curves of lower-limb veins. Invest Radiol 2001;36:164-169. RATIONALE AND OBJECTIVES:To evaluate time-density curves of the lower-limb veins for optimization of CT venography. METHODS:Fifty patients referred for chest CT were randomized int...

journal_title：Investigative radiology

authors： Szapiro D,Ghaye B,Willems V,Zhang L,Albert A,Dondelinger RF

更新日期：2001-03-01 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：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：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：:Diagnostic radiology is expanding, playing an increasingly central role in patient care, which heightens the importance of radiology teaching in undergraduate medical education. This study examined the impact of increased structure and systematic evaluation on student performance in a radiology elective. The evaluatio...

journal_title：Investigative radiology

authors： Blane CE,Calhoun JG,Maxim BR,Martel W,Davis WK

更新日期：1985-05-01 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：RATIONALE AND OBJECTIVES:The authors report on the development and preliminary validation of a technique for measuring contrast-to-noise ratio (CNR) at all points along selected vessel segments in the original three-dimensional magnetic resonance angiography (MRA) dataset. METHODS:Contrast-to-noise ratio dependencies ...

journal_title：Investigative radiology

authors： Du Y,Parker DL,Davis WL,Blatter DD

更新日期：1993-11-01 00:00:00

abstract：:Proton magnetic resonance (MR) spectroscopy with homonuclear editing was used to assess lactate accumulation in ischemic and anoxic hearts perfused according to the Langendorff method. An increase in the lactate signal was observed after 5 minutes of ischemia and after 10 to 20 minutes of anoxia. This study demonstrat...

journal_title：Investigative radiology

authors： Richards TL,Terrier F,Sievers RE,Lipton MJ,Moseley ME,Higgins CB

更新日期：1987-08-01 00:00:00

abstract：:A technique to measure absolute arterial blood flow in ml/min has been developed utilizing software programs with high-speed digital recording for the off-line analysis of intra-arterial injections of contrast medium. Measurements of pulsatile flow in a phantom for a physical flow model showed that calculations with t...

journal_title：Investigative radiology

authors： Forbes G,Gray JE,Felmlee JP

更新日期：1985-03-01 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：:With the ongoing development of new contrast agents, questions develop concerning the cardiac effects of these drugs. We used the perfused rat heart model to investigate the effects on cardiac and coronary function of hypertonic ionic (sodium chloride) and nonionic (glucose) solutions and conventional and low osmolali...

journal_title：Investigative radiology

authors： Fleetwood G,Bettmann MA,Gordon JL

更新日期：1990-03-01 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：RATIONAL AND OBJECTIVES:Magnetic resonance (MR) scan technique and lesion detectability were evaluated using a newly developed spinal abscess model in the New Zealand White rabbit. METHODS:To create the lesion, an epidural needle was inserted under fluoroscopic guidance in the lumbar region and advanced to penetrate t...

journal_title：Investigative radiology

authors： Runge VM,Williams NM,Lee C,Timoney JF

更新日期：1998-04-01 00:00:00

abstract：AIM:: We sought to improve the clinical interpretation of first-pass myocardial magnetic resonance perfusion. Parametric analyses of the myocardial distribution of the contrast agent have been proposed. The objective of the present study was to compare the effectiveness of visual analysis and of a parametric approach i...

journal_title：Investigative radiology

authors： Carme S,Maï W,Mazzadi A,Janier M,Revel D,Magnin I,Wiart M,Neyran B,Canet-Soulas E

更新日期：2006-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors compare the magnetic resonance (MR) phase contrast flow velocity measurements in varying concentric stenoses with invasive measurements obtained with a Doppler guidewire. METHODS:Flow velocity measurements were obtained using a calibrated 0.018 inch 12 MHz Doppler guidewire and a 1...

journal_title：Investigative radiology

authors： Hoppe M,Heverhagen JT,Froelich JJ,Kunisch-Hoppe M,Klose KJ,Wagner HJ

更新日期：1998-08-01 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：OBJECTIVES:We sought to assess large bowel motility, induced by 2 prokinetic agents, senna tea and erythromycin, using functional cine magnetic resonance imaging (MRI). MATERIALS AND METHODS:Twelve volunteers underwent functional cine MRI before and after the administration of senna tea or erythromycin. The protocol c...

journal_title：Investigative radiology

authors： Buhmann S,Kirchhoff C,Wielage C,Mussack T,Reiser MF,Lienemann A

更新日期：2005-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Bolus injection of iodinated contrast media has been observed to alter myocardial mechanical function, but the consequences on cellular metabolism are poorly documented. Modifications of metabolic parameters (intracellular pH as well as adenosine triphosphate [ATP], phosphocreatine, and inorgan...

journal_title：Investigative radiology

authors： Goossens A,Vander Elst L,Van Haverbeke Y,Muller RN

更新日期：1995-01-01 00:00:00

abstract：OBJECTIVES:Contrast-enhanced ultrasound imaging is increasingly being used in the clinic for assessment of tissue vascularity. The purpose of our study was to evaluate the effect of different contrast administration parameters on the in vivo ultrasound imaging signal in tumor-bearing mice using a maximum intensity pers...

journal_title：Investigative radiology

authors： Pysz MA,Foygel K,Panje CM,Needles A,Tian L,Willmann JK

更新日期：2011-03-01 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：OBJECTIVES:The authors assessed the relative efficacy of conventional and digital storage-phosphor radiographs for the detection of skull fractures. METHODS:Fifty conventional film-screen radiographs (FSR) and 50 digital storage-phosphor radiographs (DR) with 66 fractures were compared. Five radiologists evaluated ima...

journal_title：Investigative radiology

authors： Langen HJ,Klein HM,Wein B,Stargardt A,Günther RW

更新日期：1993-08-01 00:00:00

abstract：OBJECTIVE:To demonstrate a method of assessing radiologic diagnostic agreement utilizing multiple blinded external readers. METHODS:Six body CT studies interpreted by one reader (primary reader) at the host institution were compiled with patient identifiers removed. Brief clinical histories that were available to the ...

journal_title：Investigative radiology

authors： Ryan AF,Semelka RC,Molina PL,Yonkers S,Vaidean G

更新日期：2010-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:This study sought to evaluate prospectively the diagnostic potential of unenhanced and enhanced color Doppler and power Doppler for the differentiation of tumors and tumorlike lesions of the breast. METHODS:Ninety-two patients with 110 tumors or tumorlike lesions of the breast were investigate...

journal_title：Investigative radiology

authors： Schroeder RJ,Maeurer J,Vogl TJ,Hidajat N,Hadijuana J,Venz S,Weber S,Felix R

更新日期：1999-02-01 00:00:00

abstract：RATIONAL AND OBJECTIVES:The feasibility of tubal occlusion by selective salpingography was tested in an animal model; three novel occluding materials also were tested for this application. METHODS:Unilateral selective salpingography was performed in three groups of six rabbits; fallopian tubes were embolized with etha...

journal_title：Investigative radiology

authors： Maubon A,Rouanet JP,Laurent A,Joujoux JM,Cover S,Courtieu C,Wassef M,Godlewski G,Honiger J,Lopez FM

更新日期：1994-02-01 00:00:00

abstract：:In vivo and in vitro studies have shown that areas of myocardial infarctions can be delineated on CT scans after intravenous administration of iodinated contrast material to dogs with experimental myocardial infarctions. Within the first minute after intravenous administration of contrast material (initial myocardial ...

journal_title：Investigative radiology

authors： Higgins CB,Siemers PT,Newell JD,Schmidt W

更新日期：1980-11-01 00:00:00

abstract：OBJECTIVES:The objectives of this study were to test the feasibility of an investigational dual-channel next-generation endorectal coil (NG-ERC) in vivo, to quantitatively assess signal-to-noise ratio (SNR), and to get an impression of image quality compared with the current clinically available single-loop endorectal ...

journal_title：Investigative radiology

authors： Vos EK,Sambandamurthy S,Kamel M,McKenney R,van Uden MJ,Hoeks CM,Yakar D,Scheenen TW,Fütterer JJ

更新日期：2014-01-01 00:00:00

abstract：:Using real-time ultrasound, the motions of the tongue, hyoid bone, and larynx were monitored and timed during swallowing in ten normal subjects. A well-defined propulsive wave of the tongue was observed during swallowing a 5-cc water bolus. The body of the hyoid bone was identified on the ultrasound scan as a high ech...

journal_title：Investigative radiology

authors： Shawker TH,Sonies B,Hall TE,Baum BF

更新日期：1984-03-01 00:00:00

abstract：:Observation of the relaxivity of MRI contrast media over a wide range of magnetic fields is not only necessary for predicting their efficiency at any field but also compulsory for understanding and improving their mechanisms of action. The best experimental approach to this problem is the field cycling method, which a...

journal_title：Investigative radiology

authors： Muller RN,Vander Elst L,Rinck PA,Vallet P,Maton F,Fischer H,Roch A,Van Haverbeke Y

更新日期：1988-09-01 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：OBJECTIVES:The aim of this study was to develop a method to determine hepatic and renal clearance of the 2 diastereoisomers (Gd-A, Gd-B) of Gd-EOB-DTPA separately. MATERIALS AND METHODS:Between July 2017 and February 2018, 41 patients with hepatic disease were prospectively included. For each patient, 1 mL of iopromid...

journal_title：Investigative radiology

authors： Yuan X,Wang S,Shi W,Cai Y,Chen Y,Chen M,Peng Y,Ao G

更新日期：2020-03-01 00:00:00