Abstract:
OBJECTIVE:Computed tomography (CT) and magnetic resonance imaging (MRI) are introduced as an alternative to traditional autopsy. The purpose of this study was to investigate their accuracy in mass estimation of liver and spleen. METHODS:In 44 cases, the weights of spleen and liver were estimated based on MRI and CT data using a volume-analysis software and a postmortem tissue-specific density factor. In a blinded approach, the results were compared with the weights noted at autopsy. RESULTS:Excellent correlation between estimated and real weights (r = 0.997 for MRI, r = 0.997 for CT) was found. Putrefaction gas and venous air embolism led to an overestimation. Venous congestion and drowning caused higher estimated weights. CONCLUSION:Postmortem weights of liver and spleen can accurately be assessed by nondestructive imaging. Multislice CT overcomes the limitation of putrefaction and venous air embolism by the possibility to exclude gas. Congestion seems to be even better assessed.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Jackowski C,Thali MJ,Buck U,Aghayev E,Sonnenschein M,Yen K,Dirnhofer R,Vock Pdoi
10.1097/01.rli.0000221323.38443.8dsubject
Has Abstractpub_date
2006-07-01 00:00:00pages
572-8issue
7eissn
0020-9996issn
1536-0210pii
00004424-200607000-00005journal_volume
41pub_type
杂志文章abstract:OBJECTIVES:Intra-arterial digital subtraction angiography (IA-DSA), an invasive procedure, is the current reference examination after percutaneous transluminal angioplasty and stenting for the detection of in-stent restenosis (ISR). In this phantom study, we evaluated flat-panel angiographic computed tomography after i...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318276db43
更新日期:2013-02-01 00:00:00
abstract::Computed tomography followed by sectional radiography and photography as performed on eight cadaveric specimens in order to define the anatomy and normal motion of both the proximal and the distal radioulnar articulations. Osseous landmarks were defined that allowed measurement of rotation at the glenohumeral, proxima...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198311000-00012
更新日期:1983-11-01 00:00:00
abstract::The authors investigated the effect on the brain of red blood cells that had been modified by contrast media. Rat blood was mixed with an equivolume of contrast media, and up to 200 microL of the mixture was infused to the internal carotid artery of the rat. Evans blue was administered intravenously to assess the inte...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198905000-00009
更新日期:1989-05-01 00:00:00
abstract:UNLABELLED:Szapiro D, Ghaye B, Willems V, et al. Evaluation of CT time-density curves of lower-limb veins. Invest Radiol 2001;36:164-169. RATIONALE AND OBJECTIVES:To evaluate time-density curves of the lower-limb veins for optimization of CT venography. METHODS:Fifty patients referred for chest CT were randomized int...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004424-200103000-00005
更新日期:2001-03-01 00:00:00
abstract::The rate at which isotopes descend from the cisterna magna to the lumbar subarachnoid space is highly variable. In monkeys, with and without previous lumbar puncture, transit time was measured. In animals with a previous lumbar puncture, transit times were 10 to 120 minutes; in monkeys without a previous lumbar punctu...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198805000-00005
更新日期:1988-05-01 00:00:00
abstract:PURPOSE:To determine whether liver metastases conspicuity is improved at 80 kVp when compared with weighted average (WA) simulated 120 kVp data using dual source dual energy CT. METHODS:A total of 11 patients with 44 hypo-vascular liver metastases underwent contrast enhanced Dual Energy CT (DECT). In all cases the sub...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181dfda78
更新日期:2010-07-01 00:00:00
abstract:OBJECTIVES:The aims of this study were, first, to evaluate a deep learning-based, automatic glioblastoma (GB) tumor segmentation algorithm on clinical routine data from multiple centers and compare the results to a ground truth, manual expert segmentation, and second, to evaluate the quality of the segmentation results...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000484
更新日期:2018-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The ventral sacroiliac ligament (VSL), which bridges the sacroiliac (SI) joint anteriorly, has been described as an important stabilizing structure of the joint, but no data exist regarding its assessment with routine and advanced imaging methods. The authors determine the imaging appearance of...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199608000-00009
更新日期:1996-08-01 00:00:00
abstract:OBJECTIVE:We aimed to assess whether migraine is associated with changes in the distribution of the venous drainage through primary and secondary pathways by using phase-contrast magnetic resonance imaging (MRI). METHODS:We examined 26 patients (37.3 ± 13.9 years) with recurring migraine headaches and 26 age- and gend...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318210ecf5
更新日期:2011-07-01 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
pub_type: 杂志文章
doi:10.1097/RLI.0b013e31819b00f1
更新日期:2009-04-01 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
pub_type: 杂志文章
doi:10.1097/00004424-198503000-00017
更新日期:1985-03-01 00:00:00
abstract::The effects of an intravenously administered nitroxyl spin label (PCA) on the magnetic resonance imaging (MRI) appearance and relaxation times of acute canine myocardial infarctions were studied. Twenty-four hours after ligation of the left anterior descending coronary artery (LAD), animals were either sacrificed imme...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract::Compounds containing mobile protons can act as contrast agents by increasing the value of the term (1/12 - 1/11). The efficiency of this method is markedly pH- and field-dependent. There are many such compounds allowing a choice to be made based on the characteristics of the tissue or organ, magnetic field strength, a...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198809001-00058
更新日期:1988-09-01 00:00:00
abstract::Although general suggestions have been made regarding a radiology residency curriculum, no specific list of entities has been offered. Over the past ten years, we have developed a resident-run morning conference in musculoskeletal radiology that is supervised by faculty and covers a specific curriculum. We offer our c...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199111000-00019
更新日期:1991-11-01 00:00:00
abstract:OBJECTIVE:To evaluate the feasibility of adenosine-stress dynamic myocardial volume perfusion imaging with second generation dual source computed tomography (CT) for the qualitative and quantitative assessment of myocardial blood flow (MBF) compared with stress perfusion and viability magnetic resonance imaging (MRI). ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181dfa2f2
更新日期:2010-06-01 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
pub_type: 杂志文章
doi:10.1097/00004424-199111000-00008
更新日期:1991-11-01 00:00:00
abstract::A battery of tests for toxicity assessment of new contrast media is reviewed. Cell toxicity in a protozoan culture (Blepharisma americanum); lethal dose determination in mice; EEG Spectral analysis following cisternography in rabbits; ED50 and LD50 determination by intra- and pericerebral injection in rats; intraciste...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198011001-00053
更新日期:1980-11-01 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
pub_type: 杂志文章
doi:10.1097/01.rli.0000255832.44443.e7
更新日期:2007-04-01 00:00:00
abstract::A method is presented by whichcomputed tomography scans carried out at a number of energies may be utilized to obtain cross-sectional images of density and atomic number in addition to the conventional array of linear attenuation coefficients. This type of analysis has been carried out for various substances of biolog...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197703000-00016
更新日期:1977-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors conduct technical feasibility and performance studies on a new 0.009-inch nitinol microguidewire for potential neuroendovascular applications. METHODS:In vivo microcatheterizations of brachiocephalic arteries were performed in four pigs using the 0.009-inch nitinol microguidewire w...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199704000-00008
更新日期:1997-04-01 00:00:00
abstract::In order to measure the accuracy of a diagnostic imaging technique, the correctness of each observer decision must be determined. This is often difficult in clinical cases, and various strategies are frequently used to approximate the truth. Experiments using chest radiographs as an example are reported to show the pi...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198303000-00018
更新日期:1983-03-01 00:00:00
abstract:OBJECTIVES:Contrast-enhanced ultrasound imaging is increasingly being used in the clinic for assessment of tissue vascularity. The purpose of our study was to evaluate the effect of different contrast administration parameters on the in vivo ultrasound imaging signal in tumor-bearing mice using a maximum intensity pers...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181f9202d
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to assess the effects of gadolinium (Gd3+), provided as gadolinium chloride, on fibroblast function. MATERIALS AND METHODS:Human dermal fibroblasts in monolayer culture and intact skin in organ culture were exposed to the lanthanide metal (1-20 μM). RESULTS:Increased proliferat...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181e943d2
更新日期:2010-12-01 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
pub_type: 杂志文章
doi:
更新日期:1989-06-01 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
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000642
更新日期:2020-05-01 00:00:00
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
pub_type: 杂志文章
doi:10.1097/00004424-199001000-00014
更新日期:1990-01-01 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
pub_type: 杂志文章
doi:10.1097/00004424-199905000-00007
更新日期:1999-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To assess the abilities of dynamic diffusion-weighted MRI to demonstrate the effects in vivo of a high-viscosity iodinated contrast agent on medullary and cortical blood flow in the rat kidney. METHODS:Dynamic diffusion-weighted, echoplanar MR images obtained from five b-value single-shot acqu...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200011000-00001
更新日期:2000-11-01 00:00:00
abstract::Magnetic resonance angiography (MRA) for application in the musculoskeletal system is progressing at a rapid pace. The clinical role of this new technique is still being developed, although a number of uses have already become well recognized, and MRA is diffusing into clinical practice. This article describes the bas...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199212002-00014
更新日期:1992-12-01 00:00:00
abstract:OBJECTIVE:Commercially available iodinated contrast media (CM) show significantly different physico-chemical properties. The relevance of the viscosity of CM may be underestimated as a contributing factor for clinically relevant renal failure as suggested by a large registry data analysis (Swedish registry study). The ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318190fbd2
更新日期:2009-02-01 00:00:00