Blood velocity calculated from volumetric dynamic computed tomography angiography.

abstract：:Methods are presented for the quantification of spatial resolution in x-ray computed tomographic (CT) images. Model-dependent methods are derived and compared with model independent methods for computation of the Modulation Transfer Function (MTF). These techniques are applied to phantom images of point, line, edge, a...

journal_title：Investigative radiology

authors： Assimakopoulos PA,Boyd DP,Jaschke W,Lipton MJ

更新日期：1986-03-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to evaluate the influence of different weighting factors on contrast enhancement, signal-to-noise ratio (SNR), and image quality in image fusion in dual energy computed tomography (DECT) angiography. MATERIAL AND METHODS:Fifteen patients underwent a CT angiography of the aorta with ...

journal_title：Investigative radiology

authors： Behrendt FF,Schmidt B,Plumhans C,Keil S,Woodruff SG,Ackermann D,Mühlenbruch G,Flohr T,Günther RW,Mahnken AH

更新日期：2009-01-01 00:00:00

abstract：:An ultrasound phantom was constructed simulating fetal femurs in amniotic fluid. Bones of 26, 36, 50, 58, and 70 mm, representative of gestational ages ranging from 17 to 36 weeks, were scanned with mechanical sector, phased sector, and linear array systems (ATL, Diasonics, Acuson, and GE). Measurements were made with...

journal_title：Investigative radiology

authors： Gamba JL,Bowie JD,Dodson WC,Hedlund LW

更新日期：1985-05-01 00:00:00

abstract：OBJECTIVES:Ferumoxytol, an intravenous iron supplement, can be used in off-label mode as a contrast agent in magnetic resonance imaging. The aim of this study was to assess whether ferumoxytol can be used as a marker of inflammation in animal models of acute and chronic inflammatory kidney diseases. MATERIAL AND METHO...

journal_title：Investigative radiology

authors： Budjan J,Neudecker S,Schock-Kusch D,Kraenzlin B,Schoenberg SO,Michaely HJ,Attenberger UI

更新日期：2016-02-01 00:00:00

abstract：:Observer performance in radiologic interpretation has traditionally been based upon Receiver Operating Characteristic (ROC) analysis. A statistical method that evaluates the reproducibility or consistency of radiologic interpretation is presented. Since this method is not based upon pathologic verification, it cannot ...

journal_title：Investigative radiology

authors： Herman S,DeBoer G,Rideout DF,Majesky IF

更新日期：1984-11-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to assess and compare the overall performance, reliability, variability, as well as the accuracy of diffusion tensor imaging (DTI) and fiber tracking metrics, for the muscles of the calf at 3 T and 7 T. MATERIALS AND METHODS:Ten volunteers (5 males; mean age, 29.1 ± 4.7 years), with...

journal_title：Investigative radiology

authors： Giraudo C,Motyka S,Weber M,Feiweier T,Trattnig S,Bogner W

更新日期：2019-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To determine whether vascular endothelial growth factor (VEGF) is a histopathological factor influencing contrast enhancement of hepatocellular carcinoma (HCC) on computed tomography (CT). METHODS:Twenty-two nodular HCCs underwent multiphase helical CT and surgery. Tumor size, histological gra...

journal_title：Investigative radiology

authors： Kwak BK,Shim HJ,Park ES,Kim SA,Choi D,Lim HK,Park CK,Chung JW,Park JH

更新日期：2001-08-01 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: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：OBJECTIVE:The aim of this study was to evaluate the potential of iterative metal artifact reduction (IMAR) for the improvement of computed tomography (CT)-based position emission tomography (PET) attenuation correction in the vicinity of metal implants and compare it with dual-energy-based metal artifact reduction stra...

journal_title：Investigative radiology

authors： Schabel C,Gatidis S,Bongers M,Hüttig F,Bier G,Kupferschlaeger J,Bamberg F,la Fougère C,Nikolaou K,Pfannenberg C

更新日期：2017-01-01 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：RATIONALE AND OBJECTIVES:The authors studied the incidence and distribution of orthopedic injuries sustained in Operation Desert Shield and Desert Storm by evaluating whether existing diagnostic imaging modalities were sufficient to diagnose the types of musculoskeletal injuries incurred. The authors also sought to det...

journal_title：Investigative radiology

authors： Truax AL,Chandnani VP,Chacko AK,Gonzalez DM

更新日期：1997-03-01 00:00:00

abstract：OBJECTIVES:The objective of this study was to prospectively compare diagnostic performance and time efficiency of a double-reading paradigm in which a first-reader computer-aided detection (CAD) is followed by a fast 2-dimensional review (DR FR-CAD) with those of a double reading with second-reader CAD (SR CAD). MATER...

journal_title：Investigative radiology

authors： Iussich G,Correale L,Senore C,Hassan C,Segnan N,Campanella D,Bert A,Galatola G,Laudi C,Regge D

更新日期：2014-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the efficacy of oral administration of cilostazol, an antithrombotic agent, for the prevention of thrombotic occlusion and intimal hyperplasia after stenting. METHODS:Single-bodied Z-stents were placed in the iliac arteries of 23 dogs. Before stenting, an embolizing coil was introd...

journal_title：Investigative radiology

authors： Kubota Y,Kichikawa K,Uchida H,Maeda M,Nishimine K,Makutani S,Sakaguchi S,Yoshioka T,Ohishi H,Kimura Y

更新日期：1995-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To study cellular mechanisms that cause contrast media nephropathy, an in vitro system for proximal and distal tubular cells has been established to evaluate the influence of x-ray contrast media on tubular function. METHODS:Confluent cell cultures of the two renal cell lines, proximal tubule ...

journal_title：Investigative radiology

authors： Andersen KJ,Christensen EI,Vik H

更新日期：1994-11-01 00:00:00

abstract：PURPOSE:To prospectively determine the accuracy of 1.5 Tesla (T) and 3 T magnetic resonance angiography (MRA) versus digital subtraction angiography (DSA) in the depiction of infrageniculate arteries in patients with symptomatic peripheral arterial disease. PATIENTS AND METHODS:A prospective 1.5 T, 3 T MRA, and DSA co...

journal_title：Investigative radiology

authors： Diehm N,Kickuth R,Baumgartner I,Srivastav SK,Gretener S,Husmann MJ,Jaccard Y,Do do D,Triller J,Bonel HM

更新日期：2007-06-01 00:00:00

abstract：:Using simple surgical techniques, experimental carotid aneurysms are created which simulate some types of human berry aneurysms, both in hemodynamic and radiographic behavior. End to side anastomoses of an external jugular vein graft to the common carotid artery can be carried out by radiologic personnel with no forma...

journal_title：Investigative radiology

authors： Kerber CW,Buschman RW

更新日期：1977-03-01 00:00:00

abstract：:Video dilution technique (VDT) is currently performed in conjunction with routine cerebral angiography to determine carotid blood flow in humans. Preliminary results indicate that the blood flows (as a percentage of cardial output) of the common, internal, and external carotid arteries are 8.5%, 5.5%, and 3.0%, respec...

journal_title：Investigative radiology

authors： Lantz BM,Dublin AB,McGahan JP,Link DP

更新日期：1981-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Gray scale and power Doppler sonography are commonly used to evaluate cervical lymph nodes. This study was undertaken to identify which of the features used in ultrasound of cervical lymph nodes is readily applicable in routine clinical practice. METHODS:Two hundred and eight-six patients diag...

journal_title：Investigative radiology

authors： Ahuja A,Ying M

更新日期：2002-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To compare the visibility and localization of extratemporal cortical lesions in extratemporal epilepsy by using curved reconstruction (CR) and three-dimensional surface rendering (3D SR) of 3D-acquired MR images and to study the degree of confidence with which localizations are made, particular...

journal_title：Investigative radiology

authors： Meiners LC,Scheffers JM,De Kort GA,Burger H,Van Huffelen AC,Van Rijen PC,Van Veelen CW

更新日期：2001-04-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to compare the prognostic utility of a staging system using magnetic resonance imaging (MRI) with the seventh American Joint Committee on Cancer (AJCC) staging system in patients with hepatocellular carcinoma (HCC) who underwent hepatic resection. MATERIALS AND METHODS:A total of 1...

journal_title：Investigative radiology

authors： An C,Choi GH,Lee HS,Kim MJ

更新日期：2012-11-01 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:To characterize the long-term effects of therapeutic doses of ionizing radiation on the uptake and distribution of percutaneously delivered particulate contrast media in normal lymph nodes. METHODS:Two milliliters of an iodinated nanoparticle suspension (76 mg I/mL) was injected subcutaneously...

journal_title：Investigative radiology

authors： Wisner ER,Théon A,Griffey SM,McIntire GL

更新日期：2000-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the safety and pharmacokinetics of a newly developed MR contrast medium consisting of very small superparamagnetic iron oxide particles (VSOP) coated with citrate (VSOP-C184) in a clinical phase I trial. METHODS:A total of 18 healthy subjects received either VSOP-C184 (core diamete...

journal_title：Investigative radiology

authors： Taupitz M,Wagner S,Schnorr J,Kravec I,Pilgrimm H,Bergmann-Fritsch H,Hamm B

更新日期：2004-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Our purpose was to validate contrast-enhanced computed tomography (CECT)-derived quantitative measures of perfusion and permeability against gold standard techniques of fluorescent microspheres and Evan's Blue dye, respectively. MATERIALS AND METHODS:Normal and tumor-bearing (R3230AC) Fischer ...

journal_title：Investigative radiology

authors： Pollard RE,Garcia TC,Stieger SM,Ferrara KW,Sadlowski AR,Wisner ER

更新日期：2004-06-01 00:00:00

abstract：OBJECTIVES:We compared the image quality and diagnostic performance of 2 fat-suppression methods for black-blood T2-weighted fast spin-echo (FSE), which are as follows: (a) short T1 inversion recovery (STIR; FSE-STIR) and (b) spectral adiabatic inversion recovery (SPAIR; FSE-SPAIR), for detection of acute myocardial in...

journal_title：Investigative radiology

authors： Srichai MB,Lim RP,Lath N,Babb J,Axel L,Kim D

更新日期：2013-01-01 00:00:00

abstract：:A series of 5-hydroxyacylamino-2,4,6-triiodo-N,N'-hydroxy-alkyl-isophtalamides was prepared in order to study the structural requirements for high water solubility and low toxicity. Among the amides substituted by 2-hydroxyethyl; 2,3-dihydroxypropyl; 1,3-dihydroxypropyl-; and 1,1-dihydroxy-methyl-2-oxyethyl- groups, t...

journal_title：Investigative radiology

authors： Pitrè D,Felder E

更新日期：1980-11-01 00:00:00

abstract：:Chest radiographs are commonly obtained to assess children for bronchiolitis, both to corroborate the diagnosis and to exclude other diagnostic possibilities. Their utility in this setting has not previously been examined. Using a blinded, randomized study design, we examined the interobserver and intraobserver variat...

journal_title：Investigative radiology

authors： Coblentz CL,Babcook CJ,Alton D,Riley BJ,Norman G

更新日期：1991-02-01 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：RATIONALE AND OBJECTIVES:This study was devised to develop a method of measuring the acute effects of radiocontrast media on renal function and assessing the relationship of the dose of radiocontrast media infused with the incidence of radiocontrast-induced renal failure. In addition, the drug adenosine phosphate-magne...

journal_title：Investigative radiology

authors： Albert SG,Shapiro MJ,Brown WW,Goodgold H,Zuckerman D,Durham R,Kern M,Fletcher J,Wolverson M,Plummer ES

更新日期：1994-06-01 00:00:00