Artifacts and thresholding in X-ray CT of a cortical bone and titanium composite.

abstract：OBJECTIVE:The aim of this study was to evaluate volume histogram analysis between usual interstitial pneumonia (UIP) and nonspecific interstitial pneumonia (NSIP). METHODS:Sixty cases (UIP, n = 22; NSIP, n = 38) were evaluated retrospectively. Three parameters (contrast, variance, and entropy) were calculated in 3 typ...

journal_title：Journal of computer assisted tomography

authors： Sumikawa H,Johkoh T,Yamamoto S,Oota M,Ueguchi T,Ogata Y,Matsumoto M,Fujita Y,Natsag J,Inoue A,Mihara N,Honda O,Tomiyama N,Nakamura H

更新日期：2007-11-01 00:00:00

abstract：:We report a case of pulmonary venoocclusive disease in which chest radiography, when supplemented with computed tomography after contrast medium administration, was specific enough to make the diagnosis without resorting to more invasive, potentially dangerous procedures. A brief review of the literature, with emphasi...

journal_title：Journal of computer assisted tomography

authors： Maltby JD,Gouverne ML

更新日期：1984-08-01 00:00:00

abstract：:The anatomy of the teeth and surrounding bony structures is easily illustrated by computed CT image protocols, which produce detailed surface renderings of this complex area. The purpose of this article is to label the dental and bony landmarks of the maxilla, mandible, and palatine bones together with the adjacent re...

journal_title：Journal of computer assisted tomography

authors： Hayman LA,Duncan G,Gordon M,Taber KH

更新日期：2002-09-01 00:00:00

abstract：:We evaluated the feasibility of angiographic computed tomography (ACT) for diagnostic imaging in a patient with degenerative lumbar spine disease. ACT provides a volume data set out of a rotational acquisition with a c-arm-mounted flat-panel detector. Using this technique, radiographic myelography and myelographic com...

journal_title：Journal of computer assisted tomography

authors： Buhk JH,Elolf E,Knauth M

更新日期：2006-09-01 00:00:00

abstract：OBJECTIVE:To describe the magnetic resonance imaging characteristics of supratentorial ependymomas. METHODS:The magnetic resonance imaging and computed tomography imaging characteristics of 49 cases of supratentorial ependymomas were analyzed retrospectively. The location, size, degree of perilesional edema, gross app...

journal_title：Journal of computer assisted tomography

authors： Jabeen S,Konar SK,Prasad C,Mahadevan A,Beniwal M,Sadashiva N,Santosh V,Saini J

更新日期：2020-09-01 00:00:00

abstract：:The preoperative temporal bone CT scans of 13 patients with surgically proven acquired cholesteatoma were retrospectively reviewed for bony erosions and for extension beyond the temporal bone. A correlation with the clinical and surgical findings was also carried out. The CT findings are discussed and illustrated as w...

journal_title：Journal of computer assisted tomography

authors： Johnson DW,Hinshaw DB Jr,Hasso AN,Thompson JR,Stewart CE 3rd

更新日期：1985-05-01 00:00:00

abstract：:Chest CT and magnetic resonance (MR) examinations of 28 patients with newly diagnosed or recurrent lymphoma involving the mediastinum were retrospectively evaluated for evidence of chest wall involvement. Computed tomography demonstrated seven sites of chest wall involvement in four patients; whereas MR demonstrated 1...

journal_title：Journal of computer assisted tomography

authors： Bergin CJ,Healy MV,Zincone GE,Castellino RA

更新日期：1990-11-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to explore the response to neoadjuvant chemotherapy (NAC) in nonconcentric shrinkage pattern of breast cancer (BC) patients using H-magnetic resonance spectroscopy. METHODS:Twenty-five BC patients were the study cohort. All patients received AT-based regimen as first-line treatment....

journal_title：Journal of computer assisted tomography

authors： Zhou J,Qiao PG,Zhang HT,Li GJ,Jiang ZF

更新日期：2018-01-01 00:00:00

abstract：:The CT findings in hepatic involvement by Echinococcus granulosus are described. Pathognomonic signs of the hydatid nature of a cystic lesion are visualization of the cystic wall on plain CT, calcification of the cyst wall, daughter cysts, and membrane detachment. ...

journal_title：Journal of computer assisted tomography

authors： Pandolfo I,Blandino G,Scribano E,Longo M,Certo A,Chirico G

更新日期：1984-10-01 00:00:00

abstract：:Two projection algorithms are currently available for viewing computed tomography (CT) data sets: average projection (AVG) and maximum intensity projection (MIP). Although AVG images feature good suppression of image noise but reduced edge sharpness, MIP images are characterized by good edge sharpness but also amplify...

journal_title：Journal of computer assisted tomography

authors： Meyer H,Juran R,Rogalla P

更新日期：2008-05-01 00:00:00

abstract：:We present clinical and chest computed tomography (CT) features of 5 cases of pediatric patients with 2019 novel coronavirus. Two patients had fever and dry cough, whereas the rest of 3 patients were asymptomatic. Three patients had unilateral ground glass opacities with or without consolidation in the subpleural regi...

journal_title：Journal of computer assisted tomography

authors： Liu M,Song Z,Xiao K

更新日期：2020-05-01 00:00:00

abstract：PURPOSE:Acinar cell carcinoma (ACC) is a subtype of pancreatic neoplasm sufficiently rare that its imaging has not been fully analyzed. The purpose of this article is to present the computed tomography (CT) appearance of ACC of the pancreas. METHODS:Clinical data and CT studies of 10 patients (7 male and 3 female) wit...

journal_title：Journal of computer assisted tomography

authors： Chiou YY,Chiang JH,Hwang JI,Yen CH,Tsay SH,Chang CY

更新日期：2004-03-01 00:00:00

abstract：OBJECTIVE:Our goal was to evaluate the role of Gd-enhanced MR in the diagnosis and surgical planning of intraventricular cysticercosis cysts. MATERIALS AND METHODS:Thirty-three patients with intraventricular cysticercosis were evaluated with Gd-enhanced MRI including follow-up studies ranging over time periods from 6 ...

journal_title：Journal of computer assisted tomography

authors： Zee CS,Segall HD,Destian S,Ahmadi J,Apuzzo ML

更新日期：1993-11-01 00:00:00

abstract：OBJECTIVE:We retrospectively evaluated whether multi-detector row computed tomography (MDCT) could contribute to the early detection of contralateral breast cancer in women with a diagnosis of breast cancer and no suspicious lesions on a mammogram or an ultrasonogram of the contralateral breast. METHODS:A total of 518...

journal_title：Journal of computer assisted tomography

authors： Nakano S,Sakamoto H,Ohtsuka M,Mibu A,Karikomi M,Sakata H,Yamamoto M

更新日期：2011-01-01 00:00:00

abstract：:Present popular computed tomography (CT) algorithms reconstruct an object from the ray measurements lying on a set of parallel planes. This paper presents an algorithm that can also utilize "cross-plane" rays (i.e., rays that cross through many planes) to reconstruct the object. In this reconstruction algorithm, the r...

journal_title：Journal of computer assisted tomography

authors： Pelc NJ,Chesler DA

更新日期：1979-06-01 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：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 warme...

journal_title：Journal of computer assisted tomography

authors： Fielding JC,Wagner-Bartak NA,Javadi S,Morani AC,Ganeshan D,Ibarra-Rovira JJ,Liu X,Jensen CT

更新日期：2020-11-01 00:00:00

abstract：PURPOSE:Our goal was to perform a detailed comparison of the relative performances of helical CT (pitches 1.0, 1.5, and 2.0) and conventional (overlapped and nonoverlapped) CT in detailed 3D and MPR musculoskeletal imaging. METHOD:A specially designed bone fragment phantom was imaged with multiple slice thicknesses us...

journal_title：Journal of computer assisted tomography

authors： Kasales CJ,Mauger DT,Sefczek RJ,Mahraj R,Meilstrup JW,Van Hook D,Patrone SV,Sefczek DM,Eggli KD,Wise SW,Westacott S,Hopper KD

更新日期：1997-01-01 00:00:00

abstract：:This article reviews the value of magnetic resonance imaging (MRI) for the diagnosis of ovarian tumors especially when ultrasonography is indeterminate. Although ultrasonography is the first imaging technique used to investigate suspected pelvic masses, it has a limited capacity for tissue characterization. In additio...

journal_title：Journal of computer assisted tomography

authors： Bazot M,Daraï E,Nassar-Slaba J,Lafont C,Thomassin-Naggara I

更新日期：2008-09-01 00:00:00

abstract：:Proper therapeutic management of acute spinal trauma depends considerably on the assessment of the condition of the underlying spinal cord and the relative stability of the surrounding bony architecture. A series of 14 patients who were examined by magnetic resonance (MR) imaging following spinal trauma is presented. ...

journal_title：Journal of computer assisted tomography

authors： Tarr RW,Drolshagen LF,Kerner TC,Allen JH,Partain CL,James AE Jr

更新日期：1987-05-01 00:00:00

abstract：:To explore the potential role of MRI in detecting cardiac allograft rejection in transplant recipients using gadolinium tetraazacyclododecane tetraacetic acid (Gd-DOTA) for contrast enhancement, we examined 7 normal healthy volunteers and 39 patients separated into three groups according to histological findings. Quan...

journal_title：Journal of computer assisted tomography

authors： Mousseaux E,Farge D,Guillemain R,Bruneval P,Vulser C,Couétil JP,Carpentier A,Gaux JC

更新日期：1993-03-01 00:00:00

abstract：:Volume rendering is a visualization technique that has important applications in diagnostic radiology and radiotherapy. A methodology is presented for (a) evaluation of the quantitative accuracy of representation of known objects in volume-rendered scenes and for (b) optimization of the opacity transfer function to ac...

journal_title：Journal of computer assisted tomography

authors： Jani AB,Pelizzari CA,Chen GT,Grzeszczuk RP

更新日期：1998-05-01 00:00:00

abstract：:The subarachnoid space continues into the orbit as part of the optic nerve sheath. This space varies in size but is usually tiny. Occasionally, prominent (one case in our experience) enhancement of the optic nerve as part of metrizamide computed tomography (CT) cisternography is seen on transverse and coronal scans pr...

journal_title：Journal of computer assisted tomography

authors： Fox AJ,Debrun G,Vinuela F,Assis L,Coates R

更新日期：1979-10-01 00:00:00

abstract：:Computed tomographic and magnetic resonance (MR) findings in a case of pseudomyxoma peritonei arising from a mucoid cystadenoma of the ovary are presented. The possible diagnostic aid of MR is discussed. ...

journal_title：Journal of computer assisted tomography

authors： Weigert F,Lindner P,Rohde U

更新日期：1985-11-01 00:00:00

abstract：:Kinetic analysis of 18F-labeled 2-fluoro-2-deoxy-D-glucose (2FDG) has been carried out in 28 studies on 25 subjects. The object of the analysis was to determine the practical problems of quantitation of glucose metabolic rate (GMR) using the Sokoloff model with 2FDG. We found that arterial and venous plasma concentrat...

journal_title：Journal of computer assisted tomography

authors： Brownell GL,Kearfott KJ,Kairento AL,Elmaleh DR,Alpert NM,Correia JA,Wechsler L,Ackerman RH

更新日期：1983-10-01 00:00:00

abstract：:We report a case of an extramedullary plasmacytoma arising from the nasopharynx. The computed tomographic appearance of this rare tumor is discussed. ...

journal_title：Journal of computer assisted tomography

authors： Bhimani S,Griffin W,Virapongse C,Altmeyer V,Kier EL

更新日期：1983-12-01 00:00:00

abstract：OBJECTIVES:: The aim of this study was to achieve the quantitative analysis of the characteristic computed tomography (CT) findings and course of interstitial pneumonia using the volume histogram method. METHODS:: Contrast (CNT), variance (VAR), and entropy (EPY) values from whole-lung volume data were compared betwee...

journal_title：Journal of computer assisted tomography

authors： Sumikawa H,Johkoh T,Yamamoto S,Takahei K,Ueguchi T,Ogata Y,Matsumoto M,Fujita Y,Natsag J,Inoue A,Tsubamoto M,Mihara N,Honda O,Tomiyama N,Hamada S,Nakamura H

更新日期：2006-03-01 00:00:00

abstract：:High-resolution CT (HRCT) and chest radiographs were compared in nine patients with miliary lung disease. In all cases, miliary disease was documented to be infectious in etiology; six of these patients proved to be human immunodeficiency virus (HIV) positive. A mixture of both sharply and poorly defined 1-3 mm nodule...

journal_title：Journal of computer assisted tomography

authors： McGuinness G,Naidich DP,Jagirdar J,Leitman B,McCauley DI

更新日期：1992-05-01 00:00:00

abstract：:We describe a case of disruption of the blood-brain barrier (BBB) by nonionic, low osmolality contrast medium after abdominal angiography. One plausible explanation of this event is that acute hypertension during angiography may have increased the BBB permeability, allowing the contrast medium to leak across it. ...

journal_title：Journal of computer assisted tomography

authors： Okazaki H,Tanaka K,Shishido T,Nagase H,Hoshino M,Takebayashi S,Endoh O,Takamura Y

更新日期：1989-09-01 00:00:00

abstract：:We report a rare case of a bronchogenic cyst presenting as a pleural nodule. CT and MRI demonstrated a well circumscribed, homogeneous lesion located on the pleural surface apart from the mediastinum. It was proven to be a bronchogenic cyst localized between the parietal and visceral pleurae and connected with the med...

journal_title：Journal of computer assisted tomography

authors： Yoshioka N,Minami M,Inoue Y,Kawauchi N,Nakajima J,Oka T,Yoshikawa K,Ohtomo K

更新日期：2000-07-01 00:00:00