Phantom testing of peripheral artery. Absolute blood flow measurement with digital arteriography.

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：OBJECTIVES:The aims of this study were to assess the discriminative performance of quantitative multiparametric magnetic resonance imaging (mpMRI) between prostate cancer and noncancer tissues and between tumor grade groups (GGs) in a multicenter, single-vendor study, and to investigate to what extent site-specific dif...

journal_title：Investigative radiology

authors： Maas MC,Litjens GJS,Wright AJ,Attenberger UI,Haider MA,Helbich TH,Kiefer B,Macura KJ,Margolis DJA,Padhani AR,Selnæs KM,Villeirs GM,Fütterer JJ,Scheenen TWJ

更新日期：2019-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The vascular opacification characteristics of a new nonionic, dimeric contrast agent, iodixanol, have been compared with a nonionic, monomeric agent, iohexol, using ultrafast computed tomography (UFCT). METHODS:In 10 experiments with mongrel dogs, the contrast agents were alternately injected ...

journal_title：Investigative radiology

authors： Gould R,Brasch RC,Sievers R,Baxter A,Aicher K

更新日期：1992-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors determine the relative effect of soft-tissue compartments, body fat (percent [%Bfat] and weight [Bfat kg]) and fat-free mass (FFM kg), on measurements of ultrasound bone velocity (UBV m/second). METHODS:The authors measured UBV in proximal phalanxes and body fat and fat-free mass b...

journal_title：Investigative radiology

authors： Gómez M,Aguado F,Manuel J,Menéndez JM,Revilla M,Villa LF,Cortés J,Rico H

更新日期：1997-10-01 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：: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：:Biplane angiocardiography has emerged as a standard method for calculating left ventricular volume measurements. Validation of such measurements has separately been made for several projections of silicone casts of the left ventricle. This study was undertaken to establish and compare the regression lines for left ven...

journal_title：Investigative radiology

authors： Lipton MJ,Hayashi TT,Davis PL,Carlsson E

更新日期：1980-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Emulsions of perfluorocarbons (PFCs) have been tested as blood substitutes. However, evidence exists that there is long-term retention of some PFCs by the organs of the reticuloendothelial system (RES). The authors investigate organ retention of the blood substitute component, perfluorotripropy...

journal_title：Investigative radiology

authors： Meyer KL,Carvlin MJ,Mukherji B,Sloviter HA,Joseph PM

更新日期：1992-08-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to compare quantitative and semiquantitative parameters (signal-to-noise ratio [SNR], contrast-to-noise ratio [CNR], image quality, diagnostic confidence) from a standard brain magnetic resonance imaging examination encompassing common neurological disorders such as demyelinating dis...

journal_title：Investigative radiology

authors： Springer E,Dymerska B,Cardoso PL,Robinson SD,Weisstanner C,Wiest R,Schmitt B,Trattnig S

更新日期：2016-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Tissue contrast phenomenology was investigated analytically and clinically for a class of magnetic resonance (MR) pulse sequences we call large-tip-angle (LTA) spin-echo (SE) imaging. In comparison to traditional SE sequences (denoted 90 degrees-180 degrees-echo), the LTA sequence is of the for...

journal_title：Investigative radiology

authors： Elster AD,Provost TJ

更新日期：1993-10-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate blood pressure dependency of ultrasound time-harmonic elastography (THE) for quantification of aortic stiffness. MATERIALS AND METHODS:Thoracoabdominal aortas were surgically removed from 9 healthy domestic pigs and prepared for elastographic experiments. All vessels...

journal_title：Investigative radiology

authors： Schaafs LA,Tzschätzsch H,Steffen IG,Braun J,Hamm B,Sack I,Elgeti T

更新日期：2020-03-01 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：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：RATIONALE AND OBJECTIVES:The clinically most widely used devices (Porstmann-plug, Rashkind-umbrella, Botallooccluder) have inherent specific limitations (eg, transarterial approach, residual shunts, limited retrieval). The authors assess practicability, efficacy, and tissue reaction of the new retrievable transvenous p...

journal_title：Investigative radiology

authors： Grabitz RG,Schräder R,Sigler M,Seghaye MC,Dzionsko C,Handt S,Schneidt B,Von Bernuth G

更新日期：1997-09-01 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：: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

abstract：:The effects of edge gradient and blur on the detection pulmonary nodules were studied, using a test series of 175 artificial nodules on 30 chest films. The nodules were of homogeneous texture, about 1 cm in diameter and had a mean contrast of .12. Six observers viewed the film set, scoring both location and confidence...

journal_title：Investigative radiology

authors： Kundel HL,Revesz G,Toto L

更新日期：1979-01-01 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

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：RATIONALE AND OBJECTIVES:The authors developed a two-dimensional breathhold magnetic resonance (MR) technique for the direct imaging of pulmonary emboli. METHODS:In vitro MR imaging was performed to demonstrate the potential generation of clot-blood contrast by in vivo pulmonary embolism (PE). A two-dimensional magnet...

journal_title：Investigative radiology

authors： Moody AR,Liddicoat A,Krarup K

更新日期：1997-08-01 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：OBJECTIVES:To determine the impact of slice thickness on semiautomatic lymph node analysis. MATERIALS AND METHODS:Thoracic multislice computed tomography (MSCT) of 46 patients with NSCLC were reconstructed at 1.0-, 3.0-, and 5.0-mm slice thickness. Two radiologists independently determined long and short axis diameter...

journal_title：Investigative radiology

authors： Buerke B,Puesken M,Beyer F,Gerss J,Weckesser M,Seifarth H,Heindel W,Wessling J

更新日期：2010-02-01 00:00:00

abstract：:Previous investigations in this laboratory have confirmed the observation of facial muscle twitching during intracarotid injections of nonionic contrast media (CM) in rabbits. The reaction appears to be a locally mediated effect. To further investigate this reaction, cortical electroencephalogram (EEG) and facial elec...

journal_title：Investigative radiology

authors： Whisson CC,Evill CA,Sage MR,Wilson AJ

更新日期：1990-09-01 00:00:00

abstract：:The retropsoas recess, a previously undescribed normal anatomic variant, is reported. In most individuals, the space posterior to the belly of the psoas muscle contains fat within the posterior pararenal space. However, a retrospective review of 250 consecutive CT examinations of the abdomen revealed 11 cases (4.4%) i...

journal_title：Investigative radiology

authors： Kelly RB,Mahoney PD,Frick MP

更新日期：1987-07-01 00:00:00

abstract：:A nonionic contrast medium (iohexol) was evaluated for safety and efficacy in pediatric angiocardiography in this study of 15 patients, age 6 to 82 months. Patients carried a preliminary diagnosis of congenital heart disease. Subjects were injected with iohexol, 350 mg iodine/ml of solution with an average volume of 2...

journal_title：Investigative radiology

authors： Carlsson EC,Rudolph A,Stanger P,Teitel D,Weber W,Yoshida H

更新日期：1985-01-01 00:00:00

abstract：OBJECTIVES:The safety of nonionic contrast agents with that of ionic iodinated contrast agents in children is compared. METHODS:A comprehensive literature search was conducted to identify all publications on the safety profile of nonionic contrast agents administered intravenously to children. This information was com...

journal_title：Investigative radiology

authors： Cohen MD

更新日期：1993-11-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate if pancreatic steatosis measured by proton density fat fraction (PDFF) is associated with exocrine pancreatic function defined by fecal elastase concentrations. MATERIALS AND METHODS:A total of 1458 volunteers (777 women; age range, 21-88 years) underwent magnetic re...

journal_title：Investigative radiology

authors： Kromrey ML,Friedrich N,Hoffmann RT,Bülow R,Völzke H,Weiss FU,Lerch MM,Motosugi U,Kühn JP

更新日期：2019-07-01 00:00:00

abstract：:Electromagnetic flow measurement study was performed in 20 anesthetized dogs to evaluate the effect of selective celiac infusion of vasopressin on the hepatic arterial vasculature. Teh hepatic arterial flow showed a biphasic response with an initial decrease followed by a substantial increase in spite of a continued ...

journal_title：Investigative radiology

authors： Barr JW,Lakin RC,Rösch J

更新日期：1975-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:At many institutions, three-dimensional magnetic resonance imaging (MRI) is routinely used for examination of the knee. Multiplanar reconstruction (MPR) is a method of displaying three-dimensional datasets. The authors assessed the usefulness of MPR for evaluating knee MRI datasets by comparing...

journal_title：Investigative radiology

authors： Gay SB,Chen NC,Burch JJ,Gleason TR,Sagman AM

更新日期：1993-02-01 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