Vasopressin and hepatic artery. Effect of selective celiac infusion of vasopressin on the hepatic artery flow.

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：:The developing trend for all medical images to be in digital form raises an important question: should diagnostic interpretations be made directly from a CRT or from some form of hard copy recording of the CRT? This question was studied by having two observers read a series of digital images of the thyroid including b...

journal_title：Investigative radiology

authors： Keyes JW Jr,Kline RC,Resinger WW,Rose EA,Koral KF,Rogers WL

更新日期：1983-05-01 00:00:00

abstract：:Three methods are presented which provide statistically acceptable estimates of mean transit time of opacified blood during angiography. While the methods vary in precision, the selection of the method appropriate for any particular experimental model depends on the degree of precision required to demonstrate the effe...

journal_title：Investigative radiology

authors： Silverman NR,Rosen L

更新日期：1977-07-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate the impact of a novel iterative denoising and image enhancement technique in T1-weighted precontrast and postcontrast volume-interpolated breath-hold examination (VIBE) of the abdomen on image quality, noise levels, and diagnostic confidence without change of acquisit...

journal_title：Investigative radiology

authors： Gassenmaier S,Afat S,Nickel D,Kannengiesser S,Herrmann J,Hoffmann R,Othman AE

更新日期：2020-11-18 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：OBJECTIVE:To evaluate the degree of ischemic changes of the small intestine after arterial embolization of proximal or distal arteries with Gelfoam particles and coils in dogs. METHODS:Superselective arterial embolization in 18 dogs was performed using a coaxial catheter system. Gelfoam occlusion of the proximal level...

journal_title：Investigative radiology

authors： Han YM,Lee JM,Jin KY,Lee SY,Kim CS

更新日期：1999-10-01 00:00:00

abstract：OBJECTIVES:The objective of this study was to assess the feasibility of the combination of magnetic resonance (MR)-guided biopsy (MRGB) and diagnostic 3T MR imaging in the localization of local recurrence of prostate cancer (PCa) after external beam radiation therapy (EBRT). MATERIALS AND METHODS:Twenty-four consecuti...

journal_title：Investigative radiology

authors： Yakar D,Hambrock T,Huisman H,Hulsbergen-van de Kaa CA,van Lin E,Vergunst H,Hoeks CM,van Oort IM,Witjes JA,Barentsz JO,Fütterer JJ

更新日期：2010-03-01 00:00:00

abstract：OBJECTIVE:The aims of this study were to compare 3 contrast agents and to define feasible doses for quantitative lung perfusion imaging using the dual-bolus approach in dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI). MATERIALS AND METHODS:Ten healthy volunteers (6 males, 4 females; mean age, 23.5 yea...

journal_title：Investigative radiology

authors： Veldhoen S,Oechsner M,Fischer A,Weng AM,Kunz AS,Bley TA,Köstler H,Ritter CO

更新日期：2016-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To analyze changes in Doppler ultrasound variables of the portal vein in relation to liver biopsy findings, the authors performed a prospective study of 316 Doppler ultrasound examinations in the first 2 weeks after orthotopic liver transplantation on 23 patients. METHODS:Recordings were obtai...

journal_title：Investigative radiology

authors： Kok T,Slooff MJ,Peeters PM,Zwaveling JH,Bijleveld CM,Gi-van Loon CE,Klompmaker IJ,Haagsma EB

更新日期：1996-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors synthesized and tested a novel hydrogel system proposed for use in extra- and intravascular radiologic interventions, such as chemoembolizations and embolizations, and as a vehicle for sustained drug release. MATERIALS:The material was specifically designed to meet the prerequisite...

journal_title：Investigative radiology

authors： Weissleder R,Bogdanov A,Frank H,Nossiff N,Bogdanova A,Schaffer BK,Brady T,Wittenberg J

更新日期：1993-12-01 00:00:00

abstract：PURPOSE:The aim of this study was to develop a method to delineate the lethally frozen-tissue region (temperature less than -40°C) arising from interventional cryoablation procedures using a short tau inversion-recovery ultrashort echo-time (STIR-UTE) magnetic resonance (MR) imaging sequence. This method could serve as...

journal_title：Investigative radiology

authors： Tokuda J,Wang Q,Tuncali K,Seethamraju RT,Tempany CM,Schmidt EJ

更新日期：2020-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The reflux of ethanol into the peritoneal cavity during percutaneous ethanol injection therapy (PEIT) of liver neoplasms may cause pain and other side effects. This article studies the optimal injection technique to minimize the reflux of ethanol. METHODS:A technique using normal postmortem pi...

journal_title：Investigative radiology

authors： Vehmas T

更新日期：1992-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors studied the long-term distribution of gadolinium (Gd) in mice and rats after the administration of four commercially available magnetic resonance imaging contrast media. The goals were to determine any possible product dissociation in vivo and to evaluate the effects that product ex...

journal_title：Investigative radiology

authors： Tweedle MF,Wedeking P,Kumar K

更新日期：1995-06-01 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：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：RATIONAL AND OBJECTIVES:The purpose of this study was to evaluate the effects of variation in design parameters on the resultant radial force. We evaluated the influence of wire gauge, leg length, and number of bends on the radial force produced by z stents and compared these with radial forces produced by commercial s...

journal_title：Investigative radiology

authors： Snowhill PB,Nosher JL,Siegel RL,Silver FH

更新日期：2001-09-01 00:00:00

abstract：:Intravenous or intra-aortic injections of meglumine iothalamate in dogs indicate a slightly different tissue distribution and excretory pattern of the meglumine cation and the iothalamate anion. Differences in serum and urinary concentrations of these ions suggest some cellular penetration of the meglumine anion. In a...

journal_title：Investigative radiology

authors： Lasser EC,Lang JH,Hamblin AE,Rosen L

更新日期：1975-07-01 00:00:00

abstract：OBJECTIVES:Comparison of intravenous Fenestra VC-enhanced computed tomography (CT) with gadopentetate dimeglumine and Ferucarbotran contrast-enhanced magnetic resonance imaging (MRI) for the in vivo imaging of hepatic ischemia/reperfusion injury (IRI) in a murine model. MATERIAL AND METHODS:After induction of hepatic ...

journal_title：Investigative radiology

authors： Choukèr A,Lizak M,Schimel D,Helmberger T,Ward JM,Despres D,Kaufmann I,Bruns C,Löhe F,Ohta A,Sitkovsky MV,Klaunberg B,Thiel M

更新日期：2008-02-01 00:00:00

abstract：:Eye position recordings made while radiologists searched chest images for lung nodules showed that regions falsely reported positive or suspicious received prolonged visual attention. Correlation of regional fixation dwell time with independent ratings of image features indicated that more than 90% of false-positive d...

journal_title：Investigative radiology

authors： Kundel HL,Nodine CF,Krupinski EA

更新日期：1989-06-01 00:00:00

abstract：BACKGROUND:Nephrogenic systemic fibrosis (NSF) has been related to the use of gadolinium-based contrast agents (GBCAs) in patients undergoing dialysis. The Prospective Fibrose Nephrogénique Systémique study, a French prospective study supported by the French drug regulatory agency (Agence Nationale de Sécurité du Médic...

journal_title：Investigative radiology

authors： Amet S,Launay-Vacher V,Clément O,Frances C,Tricotel A,Stengel B,Gauvrit JY,Grenier N,Reinhardt G,Janus N,Choukroun G,Laville M,Deray G

更新日期：2014-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Hypertonic X-ray contrast media induce morphologic changes in red blood cells (RBCs) and reduce their deformability when measured in vitro. This study investigated whether RBCs treated with hypertonic contrast media could induce circulatory as well as metabolic disturbances in vivo. METHODS:Au...

journal_title：Investigative radiology

authors： Miyazawa T,Murayama C,Yamanaka T,Fritz-Zieroth B

更新日期：1993-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors investigated whether the ability of human malignant melanoma cells to increase in cell number or their ability to remain viable was compromised by high-field strength static magnetic fields. Normal human fibroblasts also were studied to determine if any magnetic field-related altera...

journal_title：Investigative radiology

authors： Short WO,Goodwill L,Taylor CW,Job C,Arthur ME,Cress AE

更新日期：1992-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The vasoconstriction of the renal arteries is frequently considered as a crucial factor for radiocontrast-induced nephropathy. A direct effect of iodinated radiographic contrast medium (RCM) on vascular smooth muscle is supposed to be one component of the vascular response. We studied the effec...

journal_title：Investigative radiology

authors： Uder M,Humke U,Pahl M,Jansen A,Utz J,Kramann B

更新日期：2002-08-01 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：OBJECTIVES:The aims of this study were to analyze the effect of dual-energy computed tomography (DECT) scanners and fluid characteristics on iodine quantification and to calculate the measurement variability range induced by those variables. METHODS:We performed an experimental phantom study with 4 mediastinal iodine ...

journal_title：Investigative radiology

authors： Kim H,Goo JM,Kang CK,Chae KJ,Park CM

更新日期：2018-06-01 00:00:00

abstract：PURPOSE:The aim was to investigate the feasibility and image quality of prospective respiratory gating for 3-D computed tomography (CT) of the lung. MATERIAL AND METHODS:Eight anesthetized pigs underwent prospectively gated multidetector computed tomography using 2 devices: a charge-coupled device (CCD) camera and a l...

journal_title：Investigative radiology

authors： Zaporozhan J,Ley S,Unterhinninghofen R,Saito Y,Fabel-Schulte M,Keller S,Szabo G,Kauczor HU

更新日期：2006-05-01 00:00:00

abstract：:Frequency spectral analysis of cardiac wall motion as calculated from the recorded video kymogram are demonstrated. Characteristic harmonics following the fundamental frequency of the cardiac rate have been demonstrated to have an alternating sequential energy distribution as measured from the free margin of the left ...

journal_title：Investigative radiology

authors： Silverman NR,Rosen L,Helland DR

更新日期：1975-03-01 00:00:00

abstract：:The microangiographic anatomy of the cat's eye is presented. The characteristic vascular pattern of each of the three distinct circulations, retinal choroidal, and ciliary is described and illustrated. ...

journal_title：Investigative radiology

authors： Rothman SL,Kier EL,Deuker DK

更新日期：1975-01-01 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：:An isotopic radiation source 125I was investigated for use in soft tissue radiaography, with particular attention to possible use in mammography for mass screening. Film sensitivities, exposure rates, absorbed doeses, contrast and resolution were determined, and compared to conventional x-ray units. It was found that ...

journal_title：Investigative radiology

authors： Fairchild R,Atkins HL,Lebowitz E,Greenberg D

更新日期：1975-09-01 00:00:00