Validation of a new method for stereotactic localization using MR imaging.

abstract：OBJECTIVE:Our goal was to assess the accuracy of estimating the time course of the arterial plasma concentration of meglumine iothalamate from cranial CT images of different vascular structures in the brain. MATERIALS AND METHODS:Dynamic CT studies of transcapillary transport in various brain lesions were analyzed. Va...

journal_title：Journal of computer assisted tomography

authors： Lapin GD,Allen CV,Groothuis DR

更新日期：1994-05-01 00:00:00

abstract：OBJECTIVE:This study evaluated the incidence and course of a hematoma occurring after femoral arterial sampling. MATERIALS AND METHODS:We studied 270 patients who underwent computed tomography (CT) including the pelvis and blood gas sampling from femoral artery using a 22-gauge needle during 2010. This population comp...

journal_title：Journal of computer assisted tomography

authors： Ishii S,Miyajima M,Shishido F,Sakuma K

更新日期：2012-03-01 00:00:00

abstract：OBJECTIVE:The aim of the study was to investigate the causes of apparent diffusion coefficient (ADC) measurement errors and to determine the optimal scanning parameters that are independent of the field strength and vendors of the magnetic resonance (MR) system. MATERIALS AND METHODS:Brain MR images of 10 healthy volu...

journal_title：Journal of computer assisted tomography

authors： Ogura A,Tamura T,Ozaki M,Doi T,Fujimoto K,Miyati T,Ito Y,Maeda F,Tarewaki H,Takahashi M

更新日期：2015-09-01 00:00:00

abstract：:A Monte Carlo technique was used to simulate some of the important physical processes involved in the coincidence detection of gamma rays by a positron emission tomograph. The major effect considered here is the detection of Compton scattered gamma rays as coincidence counts. The Compton scattering of gamma rays in a ...

journal_title：Journal of computer assisted tomography

authors： Logan J,Bernstein HJ

更新日期：1983-04-01 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

abstract：:A magnetic resonance imaging technique is discussed which, by cyclic inversion of the longitudinal magnetization, produces boli of moving material with alternating sign of the magnetization. At periodic spacings along the flow direction, the signal strength from magnetization of positive sign is equal to that of negat...

journal_title：Journal of computer assisted tomography

authors： Saloner D,Hinson WH,Moran PR,Tsui BM

更新日期：1988-01-01 00:00:00

abstract：:Congenital hyperinsulinism can be divided into diffuse or focal form. The treatment and outcome depend on distinguishing between the 2 forms. Pancreatic venous sampling was the only method available to localize the insulin secretion. [F]Fluoro-levodopa, 3,4-dihydroxy-L-phenylalanine positron emission tomography/comput...

journal_title：Journal of computer assisted tomography

authors： Subramaniam RM,Karantanis D,Peller PJ

更新日期：2007-09-01 00:00:00

abstract：:Maple syrup urine disease (MSUD) is an inherited metabolic disorder due to decreased decarboxylation of branched chain keto acids triggering an accumulation of leucine, isoleucine, and valine. We describe two infants with biochemically confirmed MSUD in whom computed tomography (CT) revealed cerebral edema. In one of ...

journal_title：Journal of computer assisted tomography

authors： Romero FJ,Ibarra B,Rovira M,Natal A,Herrera M,Segarra A

更新日期：1984-06-01 00:00:00

abstract：:A 77-year-old man with loss of consciousness, circulatory collapse, and apnea caused by myocardial infarction underwent cardiopulmonary resuscitation with intratracheal intubation and manual bag ventilation. Computed tomography of the head demonstrated massive air embolism in the entire cerebral circulation. The patie...

journal_title：Journal of computer assisted tomography

authors： Yamaki T,Ando S,Ohta K,Kubota T,Kawasaki K,Hirama M

更新日期：1989-03-01 00:00:00

abstract：PURPOSE:Our goal was to review the CT findings and to help define the role of CT in the evaluation of appendicitis in children. METHOD:Of 730 children with surgically proven appendicitis, 22 underwent preoperative CT evaluation. Their CT scans and operative and pathology records were retrospectively reviewed. The CT s...

journal_title：Journal of computer assisted tomography

authors： Jabra AA,Shalaby-Rana EI,Fishman EK

更新日期：1997-07-01 00:00:00

abstract：OBJECTIVE:To test 2 hypotheses: first, that coronary distensibility can be measured noninvasively using 64-slice computed tomographic angiography (CTA); and second, that the extent of coronary artery disease (CAD) in any individual patient is related to the degree of distensibility detected by CTA. MATERIALS AND METHO...

journal_title：Journal of computer assisted tomography

authors： Zhang JY,Li YH,Li MH,Pan JW

更新日期：2014-05-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to describe the characteristics of lung cancers in patients with tuberculous fibrothorax or empyema. METHODS:We retrospectively evaluated 138 consecutive patients with a diagnosis of lung cancer combined with fibrothorax (n = 127) or empyema (n = 11) from January 2005 to May 2015. A...

journal_title：Journal of computer assisted tomography

authors： Xu H,Koo HJ,Lee HN,Lim S,Lee JW,Choi CM,Kim MY

更新日期：2017-09-01 00:00:00

abstract：OBJECTIVE:The goal of this study was twofold: first, to quantify the influence of magnetic field strength (B0) on T2* and T2susceptibility relaxation rates in vertebral bone marrow; and second, to determine the significance of in-phase/out-of-phase phenomena in GE MRI as a function of TEs at different B0 values. MATER...

journal_title：Journal of computer assisted tomography

authors： Parizel PM,Van Riet B,van Hasselt BA,Van Goethem JW,van den Hauwe L,Dijkstra HA,van Wiechen PJ,De Schepper AM

更新日期：1995-05-01 00:00:00

abstract：:Magnetization transfer (MT) between protons of macromolecules and protons of water molecules is a recently introduced mechanism for tissue contrast in MR imaging. The MT effect is strong in tissues where there is an efficient cross relaxation between macromolecular protons and water protons and where this interaction ...

journal_title：Journal of computer assisted tomography

authors： Tanttu JI,Sepponen RE,Lipton MJ,Kuusela T

更新日期：1992-01-01 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：:Perineural spread along the nasociliary branch of the ophthalmic nerve has not been previously described, to our knowledge. One case of cutaneous squamous carcinoma at the medial canthus and another of melanoma of the nasal ala, with nasociliary nerve perineural spread, are illustrated here. Whereas magnetic resonance...

journal_title：Journal of computer assisted tomography

authors： Shah K,Esmaeli B,Ginsberg LE

更新日期：2013-03-01 00:00:00

abstract：OBJECTIVE:Evaluation of left ventricular function using electrocardiogram (ECG)-gated multidetector row CT (MDCT) by using 3 different volumetric assessment methods in comparison to assessment of the left ventricular function by invasive ventriculography. METHODS:Thirty patients with suspected or known coronary artery...

journal_title：Journal of computer assisted tomography

authors： Hundt W,Siebert K,Wintersperger BJ,Becker CR,Knez A,Reiser MF,Rubin GD

更新日期：2005-05-01 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 splenic mass was found in an asymptomatic 76-year-old woman who had been treated with steroids for autoimmune hepatitis. The lesion was found to be hyperechoic on ultrasound examination, hypovascular on angiography, low attenuating on postcontrast computed tomography, isointense to splenic parenchyma on precontrast ...

journal_title：Journal of computer assisted tomography

authors： Abo D,Terae S,Fukasawa Y,Seki H,Hasegawa Y,Sakuhara Y,Shimizu T,Shirato H

更新日期：2008-11-01 00:00:00

abstract：:The CT appearance of hemiazygos continuation of a left-sided inferior vena cava is presented along with discussion of associated anomalies. ...

journal_title：Journal of computer assisted tomography

authors： Munechika H,Cohan RH,Baker ME,Cooper CJ,Dunnick NR

更新日期：1988-03-01 00:00:00

abstract：:A test method with use of a biologic phantom--a deep-frozen specimen of a human cadaver--was developed in an attempt to simulate the clinical setting in CT of the spine. The quality of both soft tissue and bone images in the absence of motion artifacts was evaluated for seven scanner models. Special attention was paid...

journal_title：Journal of computer assisted tomography

authors： Moström U,Bergström K,Pech P,Ytterbergh C

更新日期：1986-11-01 00:00:00

abstract：:In a study designed to assess the diagnostic and prognostic usefulness of magnetic resonance (MR) imaging in patients to be treated with chymopapain, 39 patients with a clinicoradiographic picture of herniated lumbar disk were scanned. Twenty-one of these, who were actually treated, were rescanned 3 months following t...

journal_title：Journal of computer assisted tomography

authors： Masaryk TJ,Boumphrey F,Modic MT,Tamborrello C,Ross JS,Brown MD

更新日期：1986-11-01 00:00:00

abstract：:A 72-year-old woman with previously symptomatic internal carotid artery occlusion subsequently presented with an acute hemispheric deficit. The patient was initially diagnosed as having an ischemic infarction but eventually was shown to have a subacute subdural hematoma with delay in surgical evacuation and a major pe...

journal_title：Journal of computer assisted tomography

authors： Pascuzzi RM,Boyko OB,Voelker JL

更新日期：1989-09-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to describe the computed tomography (CT) findings and correlate pulmonary function tests (PFTs) of silicosis patients with emphasis on the findings in lung transplantation (LTX) recipients. METHODS:We studied the chest CT scans from 82 marble workers exposed to artificial stone dust...

journal_title：Journal of computer assisted tomography

authors： Grubstein A,Shtraichman O,Fireman E,Bachar GN,Noach-Ophir N,Kramer MR

更新日期：2016-11-01 00:00:00

abstract：:Diffuse low attenuation lesions on CT scans are caused by various pathologic conditions, especially differences of the intratumoral matrix. Low attenuation on CT scans was more defined than fat density and less than muscle density, the so-called near water density. We present representative cases of low attenuation le...

journal_title：Journal of computer assisted tomography

authors： Miyake H,Hori Y,Dono S,Mori H

更新日期：2000-09-01 00:00:00

abstract：:We report the serial MR and PET/SPECT findings in a 2 1/2-year-old boy presenting with Rasmussen syndrome and highlight the close qualitative correlations between the results of the imaging modality and the functional isotopic techniques. The latter demonstrated a wider field of extension of the disease process. Routi...

journal_title：Journal of computer assisted tomography

authors： Duprez TP,Grandin C,Gadisseux JF,De Volder A,Thauvoy C,Keyeux A,Evrard P

更新日期：1997-11-01 00:00:00

abstract：:Fallopian tube carcinoma is an unusual gynecologic malignancy that is rarely diagnosed preoperatively. We report a case of fallopian tube carcinoma occurring in a patient who had undergone a hysterectomy many years previously, in whom findings on computed tomography and ultrasound were highly suggestive of the diagnos...

journal_title：Journal of computer assisted tomography

authors： Santana P,Desser TS,Teng N

更新日期：2003-05-01 00:00:00

abstract：:The magnetic resonance (MR) demonstration of a pituitary adenoma associated with McCune-Albright syndrome is presented. A useful role for routine MR imaging of the sella turcica in all cases of clinically suspected McCune-Albright syndrome is suggested. This is especially important in patients with leontiasis ossea se...

journal_title：Journal of computer assisted tomography

authors： O'Laughlin RL,Selinger SE,Moriarty PE

更新日期：1989-07-01 00:00:00

abstract：PURPOSE:The space below the kidneys where the anterior and posterior pararenal spaces converge has been defined only vaguley in the past. We describe observations on clinical CT cases and studies on cadavers that lead to a refinement in the terminology for this extraperitoneal compartment. METHOD:Abdominal/pelvic CT s...

journal_title：Journal of computer assisted tomography

authors： Beaulieu CF,Mindelzun RE,Dolph J,Jeffrey RB Jr

更新日期：1997-03-01 00:00:00

abstract：:We describe a patient with a metastatic liver tumor that showed a cordlike shadow traversing the tumor on CT. Histopathologically, this cordlike shadow within the metastatic liver tumor was proved to be an infiltrated portal vein without blood flow surrounded by fibrous tissue. Vascular structures traversing a focal l...

journal_title：Journal of computer assisted tomography

authors： Senda T,Sawada S,Okuda Y,Kobayashi M,Tanigawa N

更新日期：1995-01-01 00:00:00