Virtual Noncontrast Images From Portal Venous Phase Spectral-Detector CT Acquisitions for Adrenal Lesion Characterization.

abstract：OBJECTIVE:The purpose of our study was to quantify peritumoral brain edema (PTE) in vivo using NMR relaxation time imaging, as the longitudinal relaxation time T1 is proportional to tissue water content, and to use the method for monitoring the effects of glucocorticoids (GCCs) on PTE in brain tumor patients as a funct...

journal_title：Journal of computer assisted tomography

authors： Andersen C,Astrup J,Gyldensted C

更新日期：1994-07-01 00:00:00

abstract：OBJECTIVE:This study aimed to determine optimal strength of sinogram-affirmed iterative reconstruction (SAFIRE) and to evaluate image quality (IQ) of low-dose chest computed tomography (LDCT) using SAFIRE compared with iterative reconstruction in image space (IRIS) and filtered back projection (FBP). METHODS:Thirty pa...

journal_title：Journal of computer assisted tomography

authors： Hwang HJ,Seo JB,Lee HJ,Lee SM,Kim EY,Oh SY,Kim JE

更新日期：2013-07-01 00:00:00

abstract：OBJECTIVE:This cross-sectional study assessed the prognostic implications of computed tomography (CT) coronary artery calcification (CAC), independent of emphysema, in patients with chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS:Coronary artery calcification and emphysema were assessed on noncontr...

journal_title：Journal of computer assisted tomography

authors： OʼHare PE,Ayres JF,OʼRourke RL,Slaughter RE,Marshall HM,Bowman RV,Fong KM,Yang IA

更新日期：2014-09-01 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

authors： Moritz R,Eaker DR,Langheinrich AC,Jorgensen SM,Bohle RM,Ritman EL

更新日期：2010-03-01 00:00:00

abstract：:Three patients are presented in whom computed tomography incidentally demonstrated low density masses posterior to, but separate from, the right kidney. In two, these were proven to represent unilocular cysts, and the third is presumed cystic. Possible etiologies are discussed. ...

journal_title：Journal of computer assisted tomography

authors： Buck DR,Dunnick NR,Doppman JL

更新日期：1979-12-01 00:00:00

abstract：:Abdominal and thoracic computed tomography examinations were abnormal in 23 of 57 patients (40.5%) with seminomatous and nonseminomatous testicular tumors. Lymph node metastases measuring less than 30 Hounsfield units (HU) occurred in 10 of these 23 patients (43.5%), five with seminoma, four with mixed germ cell tumor...

journal_title：Journal of computer assisted tomography

authors： Scatarige JC,Fishman EK,Kuhajda FP,Taylor GA,Siegelman SS

更新日期：1983-08-01 00:00:00

abstract：:A new technique is described that utilises a novel magnetic resonance pulse sequence to produce a quantitative index both for ventricular and, for the first time, extraventricular intracranial CSF volumes. The pulse sequence is a combination of a null-point inversion recovery sequence with an extended spin-echo read (...

journal_title：Journal of computer assisted tomography

authors： Condon BR,Patterson J,Wyper D,Hadley DM,Teasdale G,Grant R,Jenkins A,Macpherson P,Rowan J

更新日期：1986-09-01 00:00:00

abstract：OBJECTIVE:To describe the thin-section computed tomography (CT) findings of Sjogren syndrome accompanying pulmonary amyloidosis and lymphoproliferative disease and to compare these with histopathologic findings. SUBJECTS AND METHODS:The thin-section CT findings of 5 women (age range: 42-59 years, mean age=50 years) wi...

journal_title：Journal of computer assisted tomography

authors： Jeong YJ,Lee KS,Chung MP,Han J,Chung MJ,Kim KI,Seo JB,Franquet T

更新日期：2004-11-01 00:00:00

abstract：:Most renal metastases are asymptomatic, occur with widespread metastatic disease, and are too small to be detected with computed tomography (CT). Rarely they form large masses. These are typically angiographically hypovascular and show only minimal CT contrast enhancement. Renal carcinoma as a second primary malignanc...

journal_title：Journal of computer assisted tomography

authors： Pagani JJ

更新日期：1983-06-01 00:00:00

abstract：:Clinical evaluation of neuromuscular disorders typically consists of obtaining a detailed clinical history, physical examination, and electrophysiologic examinations. Electrodiagnostic examinations significantly aid in distinguishing between myopathy, neuropathy, and neuromuscular disorders. Electrodiagnostic examinat...

journal_title：Journal of computer assisted tomography

authors： Elsayes KM,Shariff A,Staveteig PT,Mukundan G,Khosla A,Rubin DA

更新日期：2005-05-01 00:00:00

abstract：:A headholder system is described for use in the correlation of images obtained with positron computed tomography (PCT) and other neuroradiological imaging modalities. Methods are described for defining brain anatomy from PCT images by the use of projection schemes from tomographic data. Cross-correlation of images bet...

journal_title：Journal of computer assisted tomography

authors： Mazziotta JC,Phelps ME,Meadors AK,Ricci A,Winter K,Bentson JR

更新日期：1982-08-01 00:00:00

abstract：PURPOSE:The goal of this study was to evaluate a newly developed semiautomated contour detection algorithm for the quantitative analysis of cardiovascular MRI. METHOD:Left ventricular function parameters derived from automatically detected endocardial and epicardial contours were compared with results derived from man...

journal_title：Journal of computer assisted tomography

authors： van der Geest RJ,Buller VG,Jansen E,Lamb HJ,Baur LH,van der Wall EE,de Roos A,Reiber JH

更新日期：1997-09-01 00:00:00

abstract：:Fibrodysplasia ossificans progressiva is a rare disorder characterized by progressive heterotopic bone formation in connective tissue and muscle in association with congenital skeletal anomalies. The disease usually leads to extensive immobility and eventual disability. We report the magnetic resonance findings in a b...

journal_title：Journal of computer assisted tomography

authors： Caron KH,DiPietro MA,Aisen AM,Heidelberger KP,Phillips WA,Martel W

更新日期：1990-03-01 00:00:00

abstract：:The unusual CT appearances of a renal neoplasm, which we have described as a "focal" obstructive nephrogram secondary to transitional cell carcinoma, is reported. An explanation of the appearance is postulated. ...

journal_title：Journal of computer assisted tomography

authors： Breatnach ES,Stanley RJ,Lloyd K

更新日期：1984-10-01 00:00:00

abstract：:Fifteen of 605 examinations of patients aged 60 to 85 years showed symmetrical white matter hypodensity on computed tomography (CT). Six of these showed severe white matter hypodensity, low grade atrophy, and dilated ventricles. A diagnosis of encephalopathia subcorticalis chronica progressiva, or Binswanger disease, ...

journal_title：Journal of computer assisted tomography

authors： Zeumer H,Schonsky B,Sturm KW

更新日期：1980-02-01 00:00:00

abstract：:Hepatic actinomycosis is an uncommon entity that forms communicating abscesses and fistulae. A case is presented in which findings on ultrasound, CT, and percutaneous injection of the abscess all reflected the pathologic process. Biopsy by thin-needle aspiration under CT guidance afforded prompt, accurate diagnosis an...

journal_title：Journal of computer assisted tomography

authors： Roesler PJ Jr,Wills JS

更新日期：1986-03-01 00:00:00

abstract：:Seven patients with polypoid mucoceles of the ethmoid sinuses were examined by computed tomography (CT). The findings in all cases were remarkably similar. This unique CT appearance has not been seen with malignancies and should be considered characteristic of this benign entity. ...

journal_title：Journal of computer assisted tomography

authors： Jacobs M,Som PM

更新日期：1982-08-01 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

authors： Asato R,Okumura R,Konishi J

更新日期：1991-01-01 00:00:00

abstract：:We present the case of unilateral nonhemorrhagic adrenal infarct in a 29-week pregnant 21-year-old woman. The patient presented with right upper quadrant pain, nausea, and vomiting. Ultrasonography of the right upper quadrant and appendix was negative for pathology. Magnetic resonance imaging of the abdomen demonstrat...

journal_title：Journal of computer assisted tomography

authors： Hynes D,Jabiev A,Catanzano T

更新日期：2019-11-01 00:00:00

abstract：:Idiopathic retroperitoneal fibrosis (IRF) is a rare condition of unknown etiology. An unusual case of IRF exclusively located at the peripancreatic area without extension below the lower renal poles is reported. ...

journal_title：Journal of computer assisted tomography

authors： Inaraja L,Franquet T,Caballero P,Encabo B,Humbert P

更新日期：1986-11-01 00:00:00

abstract：PURPOSE:A new nonrigid registration method, designed to reduce the effect of movement artifact in subtraction images from breast MR, is compared with existing rigid and affine registration methods. METHOD:Nonrigid registration was compared with rigid and affine registration methods and unregistered images using 54 gad...

journal_title：Journal of computer assisted tomography

authors： Denton ER,Sonoda LI,Rueckert D,Rankin SC,Hayes C,Leach MO,Hill DL,Hawkes DJ

更新日期：1999-09-01 00:00:00

abstract：OBJECTIVE:The aim of our study was to evaluate the diagnostic performance of cardiac computed tomography (CCT) in the evaluation of coronary artery stenosis in patients with ascending aorta aneurysm detected at transthoracic echocardiography. METHODS:We conducted a retrospective analysis of patients with an aneurysm 4...

journal_title：Journal of computer assisted tomography

authors： La Grutta L,Toia P,Galia M,Grassedonio E,Ajello D,Novo G,Bartolotta TV,Maffei E,Novo S,Cademartiri F,Lagalla R,Midiri M

更新日期：2016-05-01 00:00:00

abstract：OBJECTIVE:The objective was to elucidate clinical effectiveness of submillimeter multislice 2- and 3-dimensional computed tomography (CT) for diagnosis of congenital middle ear anomaly. MATERIALS AND METHODS:Preoperative CT and operative findings were retrospectively analyzed in 36 ears of 33 patients. The distance be...

journal_title：Journal of computer assisted tomography

authors： Nakasato T,Nakayama T,Nakayama M,Ehara S,Ohtsuka H,Sato H

更新日期：2014-09-01 00:00:00

abstract：OBJECTIVE:The purpose of this report was to study the contrast enhancement of reactive hematopoietic regions in bone marrow on Gd-diethylenetriamine pentaacetic acid (DTPA) enhanced MRI. MATERIALS AND METHODS:We compared the contrast enhancement of reactive hematopoietic regions in the marrow of patients with aplastic...

journal_title：Journal of computer assisted tomography

authors： Amano Y,Hayashi H,Kumazaki T

更新日期：1994-03-01 00:00:00

abstract：:Masses arising in the adrenal gland may be simulated on computed tomography (CT) by a number of anatomical structures and variations, and by certain pathological conditions in adjacent organs. These adrenal pseudotumors include the following: fluid-filled gastric fundus, prominent splenic lobulations, upper pole renal...

journal_title：Journal of computer assisted tomography

authors： Berliner L,Bosniak MA,Megibow A

更新日期：1982-04-01 00:00:00

abstract：OBJECTIVE:The aim of the study was to investigate the accuracy of dual-energy computed tomography (DECT) compared with magnetic resonance (MR) imaging for the detection of edema of the mandible. MATERIALS AND METHODS:Fifteen adult Göttingen mini pigs received irradiation to the mandible with an equivalent dose of 0, 2...

journal_title：Journal of computer assisted tomography

authors： Poort LJ,Stadler AAR,Ludlage JHB,Hoebers FJP,Kessler PAWH,Postma AA

更新日期：2017-07-01 00:00:00

abstract：:Pancreas transplantation has become more commonplace over the past several decades. Consequently, the radiological evaluation of patients with such transplants has also become more common. Radiologists must therefore be familiar with the normal imaging appearances of pancreas transplant grafts as well as a wide variet...

journal_title：Journal of computer assisted tomography

authors： Dillman JR,Elsayes KM,Bude RO,Platt JF,Francis IR

更新日期：2009-07-01 00:00:00

abstract：:The goal of neuro-oncologic surgery is to maximize tumor resection while preserving vital brain functions. Identification of the relation between the tumor and adjacent functional cortical areas as well as efferent subcortical white matter tracts is important for preservation of function. Combined diffusion tensor ima...

journal_title：Journal of computer assisted tomography

authors： Parmar H,Sitoh YY,Yeo TT

更新日期：2004-07-01 00:00:00

abstract：PURPOSE:The purpose of this study was to evaluate the usefulness of the "bridging vascular sign" in the diagnosis of an exophytic uterine leiomyoma and differentiation of a uterine leiomyoma from some other mass arising in the adnexa on pelvic MRI. METHOD:Of 52 women with a pelvic mass in whom pelvic MRI was performed...

journal_title：Journal of computer assisted tomography

authors： Kim JC,Kim SS,Park JY

更新日期：2000-01-01 00:00:00

abstract：:We propose an adaptive nonlocal means approach for image-domain material decomposition in low-dose dual-energy micro-computed tomography. The key idea is to create a distribution map for decomposition error and assign a smooth weight for a given pixel. This method is applied to the decomposed images of 3 basis materia...

journal_title：Journal of computer assisted tomography

authors： Yuan Y,Zhang Y,Yu H

更新日期：2018-11-01 00:00:00