Evaluation of neuroendocrine liver metastases: a comparison of dynamic contrast-enhanced magnetic resonance imaging and positron emission tomography/computed tomography.

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：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：OBJECTIVE:The purpose of this study was to assess the effect of age and number of previous injections of gadodiamide on the signal intensity of unenhanced T1-weighted (T1w) images of the dentate nucleus and globus pallidus in a large population. MATERIALS AND METHODS:A large, single-center retrospective population sur...

journal_title：Investigative radiology

authors： Quattrocchi CC,Errante Y,Mallio CA,Marinelli L,LoVullo G,Giannotti G,Della Sala SW,van der Molen AJ,Beomonte Zobel B

更新日期：2018-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:A computerized system that applies the case-based approach to training radiologists to diagnose brain tumors was designed. The authors attempted to provide residents a tool that supports their visual memory and inducts case-based reasoning. METHODS:A relational database with a digital image li...

journal_title：Investigative radiology

authors： Macura RT,Macura KJ,Toro VE,Binet EF,Trueblood JH,Ji K

更新日期：1994-04-01 00:00:00

abstract：:Comparatively new in the roentgen evaluation of infants and children, xerography would appear to be ideal for portraying the pediatric airway. Since the radiation dose of xerography is higher than conventional radiography, its image quality is the subject of careful scrutiny in a pediatric setting here described in 23...

journal_title：Investigative radiology

authors： Scott JR,Kramer SS,Griscom NT

更新日期：1978-07-01 00:00:00

abstract：OBJECTIVE:The objective of this study was to determine the gadolinium (Gd) concentration remaining in human bone tissue after administration of standard clinical doses of 2 Gd-based contrast agents: ProHance and Omniscan. MATERIALS AND METHODS:After administration of 0.1 mmol/kg of Gd chelate to patients undergoing hi...

journal_title：Investigative radiology

authors： White GW,Gibby WA,Tweedle MF

更新日期：2006-03-01 00:00:00

abstract：PURPOSE:We sought to develop a robotic system for computed tomography (CT)-guided biopsy to validate the feasibility, accuracy, and efficacy of the system using phantom tests. MATERIALS AND METHODS:Ten peas (mean diameter 9.9+/-0.4 mm) embedded within a gel phantom were selected for biopsy. Once the best access was de...

journal_title：Investigative radiology

authors： Kettenbach J,Kronreif G,Figl M,Fürst M,Birkfellner W,Hanel R,Ptacek W,Bergmann H

更新日期：2005-04-01 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：:Virtually all receiver operating characteristic (ROC) studies of medical imaging methods have involved data collected on a discrete confidence-rating scale, though in principle ROC studies can be conducted with either discrete or continuous scales. Continuous scales provide potential advantages in medical applications...

journal_title：Investigative radiology

authors： Rockette HE,Gur D,Metz CE

更新日期：1992-02-01 00:00:00

abstract：OBJECTIVES:Altered systolic blood flow in the ascending aorta has been correlated with increased aortic growth in patients with bicuspid aortic valves (BAVs). We used conventional, 2-dimensional (2D) phase contrast magnetic resonance imaging (PC-MRI) to assess the relationship between altered flow and future growth in ...

journal_title：Investigative radiology

authors： Burris NS,Sigovan M,Knauer HA,Tseng EE,Saloner D,Hope MD

更新日期：2014-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:It is widely believed that down-sizing catheters, and possibly needles, will decrease damage to the entry vessel in the performance of angiography. The purposes of this in vitro experiment are to determine if smaller needles produce less arterial wall damage than larger needles and to assess th...

journal_title：Investigative radiology

authors： Smith DC,Hamlin JA,Jensen DA,Pappas JM,Westengard JC,Saukel GW

更新日期：1992-10-01 00:00:00

abstract：:A patient, suffering a severe anaphylactoid reaction to contrast material injected for an intravenous pyelogram, developed a consumption coagulopathy and evidence of complement activation. Precontrast complement values suggested that the patient had been processing complement via the classical pathway, perhaps as a co...

journal_title：Investigative radiology

authors： Lasser EC,Lang JH,Lyon SG,Hamblin AE

更新日期：1980-11-01 00:00:00

abstract：:A photographic unsharp masking technique for improving the latitude of chest radiographs without sacrificing image contrast or detail is described. An unsharp mask film, prepared from a scout film of the patient's chest, is placed between the film and the front (entrance) screen in the cassette. A second radiograph th...

journal_title：Investigative radiology

authors： Sorenson JA,Niklason LT,Nelson JA

更新日期：1981-07-01 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：RATIONALE AND OBJECTIVES:As part of a general examination of the effect of blood flow patterns on the growth and risk of rupture of abdominal aortic aneurysms, the authors investigated the flow through an experimental model of a fusiform aneurysm. MATERIALS AND METHODS:Aneurysms were simulated in polyvinyl chloride tu...

journal_title：Investigative radiology

authors： Schrader T,Peattie RA,Bluth EI,Comstock CE

更新日期：1992-07-01 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：RATIONALE AND OBJECTIVES:To evaluate the short-term effects of a new nitinol stent on canine arteries. METHODS:Eighteen nitinol mesh stents were placed in abdominal aortas, common iliac arteries, and renal arteries of six dogs. Angiography was performed to evaluate the patency rates and structural changes of arteries ...

journal_title：Investigative radiology

authors： Lee KW,Park JH,Chung JW,Kim WS,Lee W,Yeon KM

更新日期：1999-05-01 00:00:00

abstract：:Early detection of pancreatic ductal adenocarcinoma (PDAC) represents the most significant step toward the treatment of this aggressive lethal disease. Previously, we engineered a preclinical Thy1-targeted microbubble (MBThy1) contrast agent that specifically recognizes Thy1 antigen overexpressed in the vasculature of...

journal_title：Investigative radiology

authors： Bam R,Daryaei I,Abou-Elkacem L,Vilches-Moure JG,Meuillet EJ,Lutz A,Marinelli ER,Unger EC,Gambhir SS,Paulmurugan R

更新日期：2020-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:High signal intensity in the basal ganglia on T1-weighted MR imaging has been reported in chronic manganese (Mn) poisoning. However, the exact meaning of the high signal intensity remains unclear: does it result from Mn itself, secondary pathologic changes of the brain tissue, or both? The goal...

journal_title：Investigative radiology

authors： Kim SH,Chang KH,Chi JG,Cheong HK,Kim JY,Kim YM,Han MH

更新日期：1999-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors differentiate breast lesions on sonography by measurements in two compression states that are perpendicular to each other. METHODS:Diameters of 100 breast lesions were measured preoperatively under lateromedial and craniocaudal compression with a new sonographic method. This method...

journal_title：Investigative radiology

authors： Richter K,Willrodt RG,Opri F,Heywang-Köbrunner SH

更新日期：1996-07-01 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：OBJECTIVES:To prospectively evaluate the image quality and diagnostic accuracy of magnetic resonance cholangiopancreatography (MRCP) at 3.0 T compared with that at 1.5 T used for patients. MATERIALS AND METHODS:This study was approved by our institutional review board, and informed consent was obtained from all patien...

journal_title：Investigative radiology

authors： Onishi H,Kim T,Hori M,Murakami T,Tatsumi M,Nakaya Y,Nakamoto A,Osuga K,Tomoda K,Nakamura H

更新日期：2009-09-01 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：: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：:Because of a need to correlate pulmonary microvascular changes with physiologic data during lung injury, in vitro and in vivo pulmonary capillary microangiography was performed on normal dogs and those subjected to oleic acid injury and glass bead microembolization. During these studies, no significant differences wer...

journal_title：Investigative radiology

authors： Clark RL,Friedman M,Kwock L,Zaremba J

更新日期：1983-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:New targeted microbubbles directed to the GPIIb IIIa receptor have been developed. The objective was to determine whether targeting microbubbles to clots would enhance ultrasound imaging. Systematic studies were designed to determine whether in vitro methodology is an acceptable predictor of in...

journal_title：Investigative radiology

authors： Schumann PA,Christiansen JP,Quigley RM,McCreery TP,Sweitzer RH,Unger EC,Lindner JR,Matsunaga TO

更新日期：2002-11-01 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：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：:Polylysine covalently linked to moieties of gadopentetate (Gd-DTPA), for use as a macromolecular blood pool marker for contrast material-enhanced magnetic resonance imaging (MRI), was characterized by means of physicochemical measurements and pharmacokinetics in rats and rabbits and compared with Gd-DTPA. Gd-DTPA-poly...

journal_title：Investigative radiology

authors： Schuhmann-Giampieri G,Schmitt-Willich H,Frenzel T,Press WR,Weinmann HJ

更新日期：1991-11-01 00:00:00

abstract：:Capacity-limited elimination of sodium iopanoate and a reproducible apparent transport maximum (Tm) were demonstrated in nonoperated dogs having an intact enterohepatic circulation and normal endogenous bile salt pool. Using a multiple infusion technique, estimation of apparent Tm of iopanoate in the liver was possibl...

journal_title：Investigative radiology

authors： Herzog RJ,Nelson JA,Staubus AE

更新日期：1976-01-01 00:00:00