Abstract:
OBJECTIVE:The aim of this study was to optimize chest port contrast injections using stepwise improvements. METHODS:Ex vivo injections were tested. Two hundred scans using power port injections were then evaluated. RESULTS:The highest flow rate was achieved using a 19G access needle, larger diameter tubing, and warmed contrast.The mean injection rates in baseline and postimprovement groups were 2.7 ± 0.4 and 4.8 ± 0.4 mL/s, respectively (P < .0001). CONCLUSION:Component optimization of the port apparatus can maximize contrast flow rates.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Fielding JC,Wagner-Bartak NA,Javadi S,Morani AC,Ganeshan D,Ibarra-Rovira JJ,Liu X,Jensen CTdoi
10.1097/RCT.0000000000001048subject
Has Abstractpub_date
2020-11-01 00:00:00pages
911-913issue
6eissn
0363-8715issn
1532-3145journal_volume
44pub_type
杂志文章abstract::This is a preliminary investigation of the cerebrospinal fluid (CSF) spaces using cardiac gated magnetic resonance imaging. A variation of intensity of the signal from the cerebral aqueduct is demonstrated during the cardiac cycle. The pattern of this variation suggests pulsatile CSF flow. Calculations that have been ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198511000-00001
更新日期:1985-11-01 00:00:00
abstract::Bullous lung disease is known to be a risk factor for developing a bronchogenic carcinoma. In this article, computed tomography appearances of 20 patients with histologically proven bronchogenic carcinoma were reviewed retrospectively. On the basis of the previous literatures and our findings, the computed tomography ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200605000-00016
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVE:We examined the relationship between the perfusion reserve as measured by acetazolamide (ACZ)-challenge N-isopropyl-I-123-p-iodoamphetamine (IMP)-single-photon emission computed tomography (SPECT) and the degree of leukoaraiosis (LA) as estimated using magnetic resonance imaging. METHODS:In 51 patients recei...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318038fc5d
更新日期:2007-11-01 00:00:00
abstract:OBJECTIVE:This article focuses on an unusual cross-sectional imaging pattern of a deep developmental venous anomaly (DVA). Since these anomalies are nonpathologic, they must not be interpreted as a disease that requires further costly workup and potentially injurious procedures (cerebral angiography). MATERIALS AND ME...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199511000-00008
更新日期:1995-11-01 00:00:00
abstract::The clinical records and radiologic findings in six patients with spontaneous (nontraumatic) intrahepatic and subcapsular hemorrhage were reviewed. Four patients had underlying liver lesions (hepatocellular carcinoma and metastasis from B-cell lymphoma in one patient each and hepatic adenoma in two other patients). On...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198805010-00007
更新日期:1988-05-01 00:00:00
abstract:OBJECTIVE:This study is motivated by the possibility of using computed tomography (CT) to detect early coronary atherosclerosis by the increased CT values within the arterial wall resulting from vasa vasorum proliferation. METHODS:Coronary arteries (n = 5) with early atherosclerotic changes were injected with Microfil...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181bb0d32
更新日期:2010-03-01 00:00:00
abstract::Magnetic resonance imaging depicts the morphological details of the female pelvis and is useful for evaluating both benign and malignant cervical masses. Clinical assessment of the extent of cervical cancer is crucial in determining the optimal treatment strategy, but clinical staging by itself has limitations. Clinic...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181ed3090
更新日期:2010-11-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to assess the accuracy of multidetector computed tomography (CT) in diagnosing perinephric (PN) and/or renal sinus (RS) fat invasion in patients with renal cell carcinoma (RCC), with reference to the CT findings predictive for the diagnosis of invasion. METHODS:This was a retr...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318283bc8e
更新日期:2013-05-01 00:00:00
abstract::An unusual case of isolated injury to the caudate lobe of the liver in a child is presented. The appearance of this injury is described, and its significance in relation to deep vascular structures of the porta hepatis and the portocaval space is discussed. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198805010-00038
更新日期:1988-05-01 00:00:00
abstract::Although computed tomography (CT) delineation of normal white matter of the cerebral hemispheres has been well documented, there has been no description of white matter within the cerebellum. Through the use of phantom studies, CT number correlations between cerebellum and cerebral hemispheres, and anatomic correlatio...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197804000-00005
更新日期:1978-04-01 00:00:00
abstract::A technique is described that permits the 19F nuclear magnetic resonance (NMR) imaging of the vascular system in animals that have been infused with certain perfluorocarbon blood substitutes. The essence of the technique is the selection for imaging of a narrow group of spectral lines from the fluorocarbon using a com...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198511000-00003
更新日期:1985-11-01 00:00:00
abstract::We present a case of a clinically suspected cerebral infarction that was diagnosed as a seizure focus on pulsed arterial spin labeling. The finding of hyperperfusion with perfusion imaging significantly impacted clinical management of the patient. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31814cf81f
更新日期:2008-03-01 00:00:00
abstract:OBJECTIVE:Our objective was to determine and report the CT findings in patients with diffuse pulmonary lymphangiomatosis (DPL). MATERIALS AND METHODS:We retrospectively reviewed the CT findings in eight patients with pathologically proven DPL. The patients ranged in age from 3 to 35 years (mean 15 years) and included ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199505000-00002
更新日期:1995-05-01 00:00:00
abstract:OBJECTIVE:Prior work has described the relationship between pulmonary vascular pruning on computed tomography (CT) scans and metrics of right-sided heart dysfunction in smokers. In this analysis, we sought to look at pruning on a lobar level, as well as examine the effect of the arterial and venous circulation on this ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000465
更新日期:2016-11-01 00:00:00
abstract:PURPOSE:The purpose of this study was to clarify characteristics of combined hepatocellular and cholangiocarcinoma (HCC-CC) on CT and clinicopathological examinations. METHODS:Dynamic incremental CT was performed on 15 combined HCC-CC patients. CT of the early phase was started at 30 s and of the late phase at 120-140...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199701000-00011
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to compare chest digital tomosynthesis (DTS) and multidetector computed tomography (MDCT) for the detection of pulmonary ground-glass opacity (GGO) nodules and estimation of radiation dose using an anthropomorphic chest phantom and simulated nodules. MATERIALS AND METHODS:A male...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318266aa71
更新日期:2012-09-01 00:00:00
abstract::Our purpose was to increase the knowledge about subcortical low-intensity images on long repetition time by describing brain magnetic resonance images of a young boy after his first spontaneous seizure. Evident in the epileptogenic area were transient images of reversible subcortical low intensity on long-repetition t...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31821f5d14
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:To present a novel magnetic resonance (MR) method of analysis of cerebrospinal fluid (CSF) flow dynamics. METHODS:Fifty-one subjects were explored with phase-contrast cine MR imaging. There were 36 volunteers, 9 patients with normal pressure hydrocephalus (NPH), and 6 patients with asymptomatic ventricular d...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200403000-00015
更新日期:2004-03-01 00:00:00
abstract::We report a case of agenesis of dorsal pancreas diagnosed by CT. This anomaly can easily be confused with pancreas divisum on endoscopic retrograde cholangiopancreatography alone. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198701000-00038
更新日期:1987-01-01 00:00:00
abstract::In a case of cerebral infarction the lesions were isointense to slightly hyperintense in the T2-weighted MR images obtained approximately 2 weeks after the onset. Earlier (1 week after onset), they had been markedly hyperintense. The probably mechanisms behind this phenomenon, referred to as "MR fogging" are discussed...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199101000-00029
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:There is an ongoing debate about how to handle incidental findings (IF) detected in healthy individuals who participate in research-driven magnetic resonance imaging (MRI) studies. There are currently no established guidelines regarding their management. METHODS:We prospectively assessed the frequency of IF ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181d9c2bb
更新日期:2010-07-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to compare the image quality of renal arteries and veins with dual-energy spectral computed tomography (CT) imaging in late arterial phase using 270 and 320 mg I/mL of iodixanol and their influence on renal function. METHODS:A total of 1062 patients underwent renal CT angiogra...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000595
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:The aim of this study was to describe the MR findings in extraspinal musculoskeletal tuberculosis (EMT). METHOD:A retrospective review was conducted of the MR findings of 18 patients with microbiologically and/or pathologically proven EMT. All MR studies were performed using T1-and T2-weighted spin echo sequen...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200103000-00004
更新日期:2001-03-01 00:00:00
abstract::Endovascular stent grafting of abdominal aortic aneurysms is a new technique that may replace open surgery in selected cases. Pre-and postoperative angiography can be replaced by helical CT. This pictorial essay describes and illustrates the use of multislice helical CT where maximum intensity projection and multiplan...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200107000-00013
更新日期:2001-07-01 00:00:00
abstract::Hereditary osteo-onychodysplasia, also known as the nail-patella syndrome (NPS), consists of a clinical tetrad of nail dysplasia, hypoplastic or absent patella, radial head dislocation, and iliac horns. Bilateral posterior iliac horns are observed only in NPS and present in >80% of patients. We describe the appearance...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199607000-00005
更新日期:1996-07-01 00:00:00
abstract::The inhalation of small quantities of carbon-11 labeled carbon monoxide results in a useful red cell label to identify vascular structures in the body and quantitate red cell concentration in tissues. Transverse section images are obtained using PC-II, the Massachusetts General Hospital (MGH) Positron Camera. Attenuat...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197811000-00001
更新日期:1978-11-01 00:00:00
abstract::The use of magnetic resonance (MR) to preoperatively evaluate patients with primary hyperparathyroidism was assessed using a 1.5 T system and surface coil reception. Twenty-five patients with primary hyperparathyroidism were studied before surgical exploration. Axial images, 5 mm thick, were obtained from the thyroid ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198709000-00023
更新日期:1987-09-01 00:00:00
abstract::Fifteen patients with 21 subdural effusions were investigated both with transmission computer assisted tomography (CAT) and positron emission tomography (PET). The tracer in the emission studies was 68Ga-EDTA. Twelve lesions were visualized both with CAT and PET. Five lesions that were negative or doubtful on CAT were...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198012000-00002
更新日期:1980-12-01 00:00:00
abstract:OBJECTIVE:Compared the performance of computer-aided detection (CAD) software for quantitative analysis of airway using computed tomography (CT) images reconstructed with versions of model-based iterative reconstruction (MBIR) that either balances spatial and density resolution (MBIRSTND) or prefers spatial resolution ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000975
更新日期:2021-01-01 00:00:00
abstract::The magnetic resonance (MR) cine display of flexion and extension (F/E) manoeuvres in the cervical spine has proved useful in the evaluation of cord compression due to bone and joint instability, spondylosis, and multiple tumours. It has advantages over X-ray F/E and CT myelography in that it is noninvasive and produc...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198811000-00008
更新日期:1988-11-01 00:00:00