Magnetization Transfer Imaging Predicts Porcine Kidney Recovery After Revascularization of Renal Artery Stenosis.

abstract：RATIONALE AND OBJECTIVES:Magnetic resonance imaging (MRI) techniques seem to be very promising for 3D dosimetry studies, but long imaging acquisition time limits their use. A new fast T1 mapping protocol, easy to implement on a conventional MR imager, has been used to determine dose distributions on Fricke gels. METHO...

journal_title：Investigative radiology

authors： Calmet C,Vincensini D,Bonnet J,Bertino C,Catala A,Martinez M,Joffre F

更新日期：1999-03-01 00:00:00

abstract：OBJECTIVES:X-ray computed tomography (CT) using phase contrast can provide images with greatly enhanced soft-tissue contrast in comparison to conventional attenuation-based CT. We report on the first scan of a human specimen recorded with a phase-contrast CT system based on an x-ray grating interferometer and a convent...

journal_title：Investigative radiology

authors： Donath T,Pfeiffer F,Bunk O,Grünzweig C,Hempel E,Popescu S,Vock P,David C

更新日期：2010-07-01 00:00:00

abstract：:We studied 60 male patients who had concurrent chest films (CXR), computed tomography scans (CT) and pulmonary function tests (PFT) to assess the sensitivity of CT and conventional films in detecting emphysema compared with PFT. We also sought to determine whether emphysema could be diagnosed by CT in patients with no...

journal_title：Investigative radiology

authors： Sanders C,Nath PH,Bailey WC

更新日期：1988-04-01 00:00:00

abstract：:In vitro incompatibilities between nine water-soluble contrast media and 21 intravascular pharmacologic agents were investigated using naked-eye observation and a centrifuge. Most of the previously reported incompatibilities were verified, and a few new incompatibilities were discovered: phentolamine mesylate with dia...

journal_title：Investigative radiology

authors： Kim SH,Lee HK,Han MC

更新日期：1992-01-01 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：OBJECTIVES:The aim of this study was to compare F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/magnetic resonance (MR) (with and without diffusion-weighted imaging [DWI]) to F-FDG PET/computed tomography (CT), with regard to the assessment of nodal and extranodal involvement, in patients with Hodgkin lym...

journal_title：Investigative radiology

authors： Giraudo C,Raderer M,Karanikas G,Weber M,Kiesewetter B,Dolak W,Simonitsch-Klupp I,Mayerhoefer ME

更新日期：2016-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To develop a new animal model for the evaluation of the renal tolerance of contrast agent and its application to diatrizoate and iotrolan injections in comparison to saline and mannitol solution. MATERIALS AND METHODS:The nephrotoxic potential of intravenously injected contrast agents in Beagl...

journal_title：Investigative radiology

authors： Krause W,Gilles T

更新日期：2003-11-01 00:00:00

abstract：PURPOSE:We sought to prospectively evaluate the image quality and visualization of the intracranial arteries using high spatial resolution contrast-enhanced magnetic resonance angiography (CE-MRA) at 3 T and to perform intraindividual comparison with time-of-flight (TOF) MRA and multislice CT angiography (CTA). MATERI...

journal_title：Investigative radiology

authors： Villablanca JP,Nael K,Habibi R,Nael A,Laub G,Finn JP

更新日期：2006-11-01 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：:The authors evaluated double-blind comparative and open-label clinical trials in 1,186 patients who received ioversol to evaluate the safety and efficacy of ioversol, a new nonionic low-osmolality contrast medium, at iodine concentrations of 32%, 24%, and 16%. The results indicate that ioversol was well tolerated in a...

journal_title：Investigative radiology

authors： Benamor M,Aten EM,McElvany KD,Lankin DG,James MA,Buy-Gandal T,Harashe LT,Weinandt WJ

更新日期：1989-06-01 00:00:00

abstract：:Pyrroxamide [N-(1-hydroxymethyl-2,3-dihydroxypropyl)-2,2,5,5-tetramethyl pyrrolidine-1-oxyl-3-carboxyamide] is a newly tested nonionic monomeric nitroxyl compound with demonstrated effectiveness for MRI contrast enhancement at doses as low as 10(-3) M. Pyrroxamide and its hydroxylamine metabolic derivative were tested...

journal_title：Investigative radiology

authors： Gordon DG,Brasch RC,Ogan MD,Deen D

更新日期：1988-08-01 00:00:00

abstract：OBJECTIVES:The objective of this study was to evaluate the use of dielectric pads for improving high spatial resolution imaging of the inner ear at 7 T. MATERIALS AND METHODS:Two sets of dielectric pads were designed using electromagnetic simulations and implemented using a deuterated suspension of barium titanate. Th...

journal_title：Investigative radiology

authors： Brink WM,van der Jagt AM,Versluis MJ,Verbist BM,Webb AG

更新日期：2014-05-01 00:00:00

abstract：PURPOSE:To evaluate the dependency of tumor contrast enhancement (CE) in regard to protein-binding properties of contrast agents, using 4 different agents with a wide range of protein-binding capacities in a standardized rat brain glioma model. MATERIAL AND METHODS:Sixteen rats with implanted brain gliomas were evalua...

journal_title：Investigative radiology

authors： Wintersperger BJ,Runge VM,Tweedle MF,Jackson CB,Reiser MF

更新日期：2009-02-01 00:00:00

abstract：:Post-angioplasty restenosis (PARS) in atherosclerotic lesions of medium and small arteries occurs in about one-third of cases in the first year following percutaneous transluminal angioplasty (PTA) (early PARS). PARS includes acute spasm, dissection with reclosure, elastic recoil, fibrocellular proliferative response,...

journal_title：Investigative radiology

authors： Becker GJ,Lee BI,Waller BF,Barry KJ,Kaplan J,Connolly R,Dreesen RG,Nardella P

更新日期：1988-11-01 00:00:00

abstract：:Flow measurements can be made with computed tomography (CT) scanners using iodinated, nonionic contrast media as a first-pass indicator. Ultrafast CT (UFCT) is an ideal machine to make these measurements because of its short scan time (50 mseconds) and interscan delay (< or = 0.6 seconds). Additionally, UFCT can acqui...

journal_title：Investigative radiology

authors： Gould RG

更新日期：1992-12-01 00:00:00

abstract：OBJECTIVES AND RATIONALE:Negative enhancement of implanted liver tumors has been achieved in preclinical studies on manganese dipyridoxal-diphosphate (Mn-DPDP), a new hepatobiliary specific contrast agent for magnetic resonance imaging (MRI). The authors investigated the effects of Mn-DPDP on primary liver cancer and i...

journal_title：Investigative radiology

authors： Ni Y,Marchal G,Zhang X,Van Hecke P,Michiels J,Yu J,Rummeny E,Lodemann KP,Baert AL

更新日期：1993-06-01 00:00:00

abstract：PURPOSE:The aim of this study was to determine to what degree current compressed sensing methods are capable of accelerating clinical magnetic resonance neuroimaging sequences. METHODS:Two 2-dimensional clinical sequences were chosen for this study because of their long scan times. A pilot study was used to establish ...

journal_title：Investigative radiology

authors： Sharma SD,Fong CL,Tzung BS,Law M,Nayak KS

更新日期：2013-09-01 00:00:00

abstract：:The absorbed levels of ethanol or tetracycline, used as gallbladder sclerosing agents, were measured in the systemic blood circulation of 16 rabbits. The maximal systemic level of ethanol was 46 mg/dl and of tetracycline was 4.6 micrograms/ml after 30 minutes of gallbladder exposure. Comparable serum levels would be c...

journal_title：Investigative radiology

authors： Remley KB,Cubberley DA,Watanabe AS,Nelson JA,Colby TV

更新日期：1986-05-01 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：:Left ventricular volume has been measured with ultrafast computed tomography. However, the accuracy with which this can be done is unknown. We therefore imaged with ultrafast computed tomography 11 rectangular phantoms, 20 to 225 ml, and 17 left ventricular casts, 15 to 112 ml. Two observers planimetered serial tomogr...

journal_title：Investigative radiology

authors： Pietras RJ,Wolfkiel CJ,Veselik K,Roig E,Chomka EV,Brundage BH

更新日期：1991-01-01 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：RATIONALE AND OBJECTIVES:To evaluate the attenuation, size, and volume of the pericardial sinuses and recesses by using electrocardiographically triggered, noncontrast-enhanced electron beam tomography (EBT) and to consider its relation with sex, age, and heart volume. METHODS:Findings in 213 consecutive patients with...

journal_title：Investigative radiology

authors： Budoff MJ,Lu B,Mao S,Bakhsheshi H,Zhuang N,Liu SC,French WJ

更新日期：2000-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To establish a pig model suitable for imitating pulmonary emboli to facilitate research in the diagnosis of pulmonary embolism. METHODS:Thirteen animals were anesthetized, mechanically ventilated, and subjected to pulmonary artery catheterization initiated from the right external jugular vein....

journal_title：Investigative radiology

authors： Amundsen T,Kvaerness J,Aadahl P,Waage A,Bjermer L,Odegård A,Haraldseth O

更新日期：2000-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Optimal dose schedules and total dose of ionizing radiation for human central nervous system malignancy are not known. An animal model has been developed for the investigation of rat central nervous system response to proton irradiation using magnetic resonance imaging (MRI). A clinical MRI dev...

journal_title：Investigative radiology

authors： Kennedy AS,Archambeau JO,Archambeau MH,Holshouser B,Thompson J,Moyers M,Hinshaw D Jr,Slater JM

更新日期：1995-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors studied the effect of contrast dose, use of magnetization transfer (MT), and temporal delay on the visualization of contrast enhancement with gadoteridol (Gd HP-DO3A) in a canine brain abscess model. METHODS:Alpha streptococcus brain abscesses were studied in five dogs at 1.5 tesla...

journal_title：Investigative radiology

authors： Runge VM,Wells JW,Kirsch JE

更新日期：1995-03-01 00:00:00

abstract：OBJECTIVES:To test the feasibility of a single MR-based examination allowing for the comprehensive assessment of renal anatomy, function, and vascular status in candidates for kidney transplantation. MATERIALS AND METHODS:Twelve healthy potential kidney donors (mean age: 47 +/- 14 [standard deviation] years, 3 men and...

journal_title：Investigative radiology

authors： Rossi C,Boss A,Artunc F,Yildiz S,Martirosian P,Dittmann H,Claussen CD,Heyne N,Schick F,Schlemmer HP

更新日期：2009-11-01 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：:The authors reexamined a suspected difference in the effects of clinical information upon detection of nodules vs. more diverse lesions by directly incorporating classification specificity into detection ROC analysis. Categorical prompts, correct for specific abnormalities, led to detection superior to unprompted read...

journal_title：Investigative radiology

authors： Berbaum KS,Franken EA Jr,Dorfman DD,Barloon TJ

更新日期：1988-01-01 00:00:00

abstract：OBJECTIVES:Pancreatic ductal adenocarcinoma (PDAC) is a very aggressive tumor with a very low 5-year survival rate of 8%. The aims of this study are to determine reference values and physiologic confounders in healthy pancreas and to assess the diagnostic accuracy of ultrasound time-harmonic elastography (THE) in the d...

journal_title：Investigative radiology

authors： Burkhardt C,Tzschätzsch H,Schmuck R,Bahra M,Jürgensen C,Pelzer U,Hamm B,Braun J,Sack I,Marticorena Garcia SR

更新日期：2020-05-01 00:00:00

abstract：:We compared the damage resulting from intradermal injection of four commonly used radiographic contrast media in laboratory rats. Sixty percent meglumine diatrizoate (Reno M 60) and ioxaglate (Hexabrix) produced significantly more ulceration and crusting on gross inspection and more necrosis, edema, and hemorrhage on ...

journal_title：Investigative radiology

authors： Cohan RH,Leder RA,Bolick D,Herzberg AJ,Hedlund LW,Wheeler CT,Helms MJ,Dunnick NR

更新日期：1990-05-01 00:00:00