abstract：:Three-dimensional volumetric rendering of CT data has proven to be valuable in the evaluation of the hip. Although video loop animation allows review of the anatomy from all perspectives, it does not show the functional range of motion of the femur in the acetabulum. We have developed a technique termed simulated dyna...

journal_title：Journal of computer assisted tomography

authors： Gerber JD,Ney DR,Magid D,Fishman EK

更新日期：1991-01-01 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

authors： Asato R,Okumura R,Konishi J

更新日期：1991-01-01 00:00:00

abstract：:Cranial CT studies of 32 patients with biopsy-proven AIDS-related primary CNS lymphoma were reviewed retrospectively. A wide variety of different CT appearances were identified. Mass lesions varied in location, size, and number. Most lesions were either iso- or hyperdense and all enhanced with contrast medium. Several...

journal_title：Journal of computer assisted tomography

authors： Goldstein JD,Zeifer B,Chao C,Moser FG,Dickson DW,Hirschfeld AD,Davis L

更新日期：1991-01-01 00:00:00

abstract：:The central dot sign on CT in Caroli disease has been described previously. We describe a patient with the central dot sign who had periductal cysts but did not have Caroli disease. ...

journal_title：Journal of computer assisted tomography

authors： Herman TE,Siegel MJ

更新日期：1990-11-01 00:00:00

abstract：:We review our preliminary experience with the use of three-dimensional (3D) time-of-flight (TOF) magnetic resonance (MR) angiography (MRA) in the assessment of intra- and extracranial aneurysms. Six patients were examined: Five had intracranial aneurysms and one had a cervical carotid pseudoaneurysm. A 3D rephased gra...

journal_title：Journal of computer assisted tomography

authors： Sevick RJ,Tsuruda JS,Schmalbrock P

更新日期：1990-11-01 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：:The typical CT findings of Lhermitte-Duclos disease (dysplastic gangliocytoma of the cerebellum) are a hypodense nonenhancing unilateral posterior fossa mass, with or without adjacent occipital thinning, hydrocephalus, and calcification. Magnetic resonance (MR) has been found to be very helpful, and superior to CT, in...

journal_title：Journal of computer assisted tomography

authors： Ashley DG,Zee CS,Chandrasoma PT,Segall HD

更新日期：1990-11-01 00:00:00

abstract：:Recently, the application of intravenous gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) has been shown to improve the detection of intradural extramedullary spinal disease in adults. The ability of Gd-DTPA enhanced magnetic resonance (MR) to detect intradural extramedullary spinal metastases was studied in p...

journal_title：Journal of computer assisted tomography

authors： Blews DE,Wang H,Kumar AJ,Robb PA,Phillips PC,Bryan RN

更新日期：1990-09-01 00:00:00

abstract：:Protocols for two- and three-dimensional phase contrast magnetic resonance angiography of the major vessels in the abdomen were developed and demonstrated in healthy volunteers. Phase contrast imaging provides excellent suppression of stationary tissue signal and can be used to quantify the speed and direction of flow...

journal_title：Journal of computer assisted tomography

authors： Dumoulin CL,Yucel EK,Vock P,Souza SP,Terrier F,Steinberg FL,Wegmuller H

更新日期：1990-09-01 00:00:00

abstract：:A case of Ebstein anomaly in a 2-day-old newborn is presented. The complementary roles of two-dimensional Doppler echocardiography and magnetic resonance imaging in managing this cardiac malformation are emphasized. ...

journal_title：Journal of computer assisted tomography

authors： Kastler B,Livolsi A,Zhu H,Roy E,Zollner G,Dietemann JL

更新日期：1990-09-01 00:00:00

abstract：:A simple technique using stereotactic needle placement for retrobulbar anesthesia is reported. The method utilizes a CT-guided stereotactic device that permits precise intraconal injection of local anesthetics; in addition, the risk of injury to muscles, vessels, eyeglobe, or optic nerve is substantially reduced. ...

journal_title：Journal of computer assisted tomography

authors： Vogl G,Schimek F,Ozdoba C,Steuhl PK,Voigt K,Nüsslin F

更新日期：1990-09-01 00:00:00

abstract：:Magnetic resonance was performed in five patients with obstructive hydrocephalus due to surgically proven colloid cyst of the third ventricle. On T1-weighted images two lesions were homogeneously hyperintense and another homogeneously isointense with the surrounding brain parenchyma. On T2-weighted images these three ...

journal_title：Journal of computer assisted tomography

authors： Wilms G,Marchal G,Van Hecke P,Plets C,Lammens M,Goffin J,Baert AL

更新日期：1990-07-01 00:00:00

abstract：:Nineteen cases of proven hepatic alveolar echinococcosis were examined by magnetic resonance (MR) and the results were compared with CT. Fibrous and parasitic tissue showed low signal both on T1- and, generally, on T2-weighted images. In a few cases a high signal on T2-weighted images may be observed, due either to ce...

journal_title：Journal of computer assisted tomography

authors： Claudon M,Bessieres M,Regent D,Rodde A,Bazin C,Gerard A,Bresler L

更新日期：1990-07-01 00:00:00

abstract：:In a prospective clinical study, 26 patients (22 with malignant lymphoma and 4 with myelofibrosis) and 9 healthy volunteers were examined by conventional magnetic resonance and proton chemical shift imaging (CSI; modified Dixon method). On the basis of the CSI data, a quantitative evaluation of the relative fat and wa...

journal_title：Journal of computer assisted tomography

authors： Gückel F,Brix G,Semmler W,Zuna I,Knauf W,Ho AD,van Kaick G

更新日期：1990-07-01 00:00:00

abstract：:In children it is often necessary to ligate the splenic artery and the main collateral supply to the spleen during liver transplantation. The complication of splenic infarction has been observed on postoperative CT in such patients. The purpose of our study was to determine the incidence and CT appearance of splenic i...

journal_title：Journal of computer assisted tomography

authors： Lehar SC,Zajko AB,Koneru B,Stevenson W,Sumkin J

更新日期：1990-05-01 00:00:00

abstract：:Three surgically proven cases of lumbar extradural juxtaarticular cysts were examined by magnetic resonance (MR) imaging. The highly variable MR signal patterns are presented. ...

journal_title：Journal of computer assisted tomography

authors： Awwad EE,Martin DS,Smith KR Jr,Bucholz RD

更新日期：1990-05-01 00:00:00

abstract：:An enterogenous cyst of the craniocervical region producing anterior medullary compression is reported. The patient presented with quadriparesis with greater involvement of the upper limbs. Computed tomography showed a high attenuation intradural extramedullary mass located anteriorly. Magnetic resonance imaging demon...

journal_title：Journal of computer assisted tomography

authors： Kak VK,Gupta RK,Sharma BS,Banerjee AK

更新日期：1990-05-01 00:00:00

abstract：:This is a comparison of the ability of two quantitative magnetic resonance (MR) indices: (a) the second echo signal drop (SESD) (a simplified index of T2 relaxation times that we have developed); and (b) the previously described lesion/liver signal intensity ratio (LLR) to provide histologic diagnosis in hepatic lesio...

journal_title：Journal of computer assisted tomography

authors： Mirowitz SA,Lee JK,Heiken JP

更新日期：1990-03-01 00:00:00

abstract：:Sixty-one CT scans in 20 patients who had undergone head and neck reconstructive surgery using a pectoralis major myocutaneous (PM-MC) flap were retrospectively evaluated to assess the usefulness of Ct in the follow-up of these patients. The normal CT findings in patients with PM-MC flaps are described. Of 13 cases wi...

journal_title：Journal of computer assisted tomography

authors： Ohgi K,Kohno A,Itabashi K,Ohkubo Y,Takahashi E,Harasawa A,Kawai C,Suzuki K,Narimatsu A,Shigeta A

更新日期：1990-03-01 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：:Small aortas were documented by CT in six patients, 16-34 years old. The diameter of these aortas measured at the level of 1 cm below the orifice of the superior mesenteric artery ranged from 10 to 12 mm, much smaller than the mean of 17 mm obtained from 20 subjects, 16-20 years old. Such small aortas are usually prod...

journal_title：Journal of computer assisted tomography

authors： Shin MS,Berland LL,Ho KJ

更新日期：1990-01-01 00:00:00

abstract：:Sternal hyperostosis is characterized by prominent new bone formation and fibrosis with less pronounced areas of granulation tissue and round cell infiltration. In previously reported cases the process involved not only the sternum but adjacent bony areas as well. Depending upon the extent of disease, acquiring biopsy...

journal_title：Journal of computer assisted tomography

authors： Bechtold RE,Karstaedt N,Wolfman NT

更新日期：1990-01-01 00:00:00

abstract：:Cooperative patients can often keep still during a long examination of the brain provided that they are given cues about their position in space. In a U-shaped head support, the only movements likely are rotation in the sagittal or transverse planes. These can be detected by a nasal orientation device (NOD), simply a ...

journal_title：Journal of computer assisted tomography

authors： Tofts PS,Kermode AG,MacManus DG,Robinson WH

更新日期：1990-01-01 00:00:00

abstract：:To evaluate the efficacy of myocardial T2 values in the assessment of allograft rejection, we performed magnetic resonance (MR) imaging at 0.5 T serially in seven cardiac transplant recipients and singly in seven normal volunteers. Cardiac-gated multi-echo spin echo images were obtained; T2 values were estimated by a ...

journal_title：Journal of computer assisted tomography

authors： Doornbos J,Verwey H,Essed CE,Balk AH,de Roos A

更新日期：1990-01-01 00:00:00

abstract：:An assessment of the role of marrow fat as a source of error in single energy quantitative CT (SEQCT) measurements of the spine is presented. Fat-induced shifts and spreads in SEQCT findings are discriminated and quantified. Studies using chemical analysis have reported an average vertebral bone mineral (MIN) loss of ...

journal_title：Journal of computer assisted tomography

authors： Glüer CC,Genant HK

更新日期：1989-11-01 00:00:00

abstract：:A case of an unusually large cystic renal cell carcinoma demonstrated on plain film, CT, and magnetic resonance (MR) is presented. Though the origin of huge abdominal tumors can be difficult to determine, the CT and MR findings were able to correctly diagnose the mass as a malignant cystic kidney tumor. ...

journal_title：Journal of computer assisted tomography

authors： Rofsky NM,Bosniak MA,Weinreb JC,Coppa GF

更新日期：1989-11-01 00:00:00

abstract：:A new examination protocol for patients with suspected meniscal or hyaline cartilage disorders is presented. Knees were imaged with a fast gradient echo imaging sequence with subsequent three-dimensional transformation. Data were transferred to an image processing system that allows reconstruction in any plane desired...

journal_title：Journal of computer assisted tomography

authors： Adam G,Bohndorf K,Drobnitzky M,Guenther RW

更新日期：1989-11-01 00:00:00

abstract：:The CT and magnetic resonance (MR) findings in 13 patients with advanced Zollinger-Ellison syndrome are described. In eight patients (62%) one or more primary tumors were found with both methods. All patients with proven liver metastases (n = 7) were identified by MR. Computed tomography was positive in six of these p...

journal_title：Journal of computer assisted tomography

authors： Tjon A Tham RT,Falke TH,Jansen JB,Lamers CB

更新日期：1989-09-01 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：:Quantitation of regional myocardial blood flow (MBF) in absolute terms with positron emission tomography (PET) has been difficult to achieve in part because of errors induced by the relatively low spatial resolution of current tomographic instruments. We previously demonstrated that MBF could be accurately measured ov...

journal_title：Journal of computer assisted tomography

authors： Herrero P,Markham J,Bergmann SR

更新日期：1989-09-01 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：:To evaluate the performance of our elastic matching system, we have created a digitized atlas from the brain of a normal young man, using 135 myelin-stained sections at 700 microns spacing. Software was written to enter and edit regional anatomic contours, which were stacked and aligned to create a three-dimensional a...

journal_title：Journal of computer assisted tomography

authors： Dann R,Hoford J,Kovacic S,Reivich M,Bajcsy R

更新日期：1989-07-01 00:00:00

abstract：:Computed tomography of the liver was performed on two patients with subacute hepatitis. The CT findings included the presence of multiple regenerative nodules in the atrophied liver, shown by decreased CT attenuation. Complications due to hepatitis, such as massive ascites and splenomegaly, were also observed. The CT ...

journal_title：Journal of computer assisted tomography

authors： Ishikawa N,Nakagawa S,Hirata K,Takizawa Y,Hayashi S,Obara T,Ishikawa T

更新日期：1989-07-01 00:00:00

abstract：:Ten children, ranging in age from 3 weeks to 11 years, with a history of primary cardiac tumors were studied by two-dimensional echocardiography and by ECG triggered magnetic resonance (MR) imaging (six of them had rhabdomyomas). Eighteen of 31 tumors with intracavitary extension diagnosed by echocardiography were det...

journal_title：Journal of computer assisted tomography

authors： Rienmüller R,Lloret JL,Tiling R,Groh J,Manert W,Müller KD,Seifert K

更新日期：1989-07-01 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：:We studied the high resolution CT (HRCT) scans of 15 patients with biopsy-proven sarcoidosis and correlated the findings with pulmonary function tests (12 patients), 67Ga scans (10 patients), bronchoalveolar lavage (five patients), recent transbronchial biopsy (six patients), and recent open lung biopsy (three patient...

journal_title：Journal of computer assisted tomography

authors： Lynch DA,Webb WR,Gamsu G,Stulbarg M,Golden J

更新日期：1989-05-01 00:00:00

abstract：:Eight magnetic resonance (MR) examinations were performed in seven patients with Achilles tendon injuries and correlated with physical examination and surgical and clinical follow-up. The MR examinations depicted the Achilles tendon in excellent detail and Achilles tendon abnormalities with greater accuracy than physi...

journal_title：Journal of computer assisted tomography

authors： Marcus DS,Reicher MA,Kellerhouse LE

更新日期：1989-05-01 00:00:00

abstract：:Computed tomography provides excellent visualization of the trachea, but there have been only limited descriptions of variations in tracheal shape. The normal tracheal cartilage is U shaped. Lunate shaped trachea is uncommon and is characterized by a coronal/sagittal diameter ratio (tracheal index) greater than 1. We ...

journal_title：Journal of computer assisted tomography

authors： Lomasney L,Bergin CJ,Lomasney J,Roggli V,Foster W

更新日期：1989-05-01 00:00:00

abstract：:Computed tomography assessment of 634 surgically proven solitary pulmonary nodules included 12 pulmonary carcinoid tumors. Five were central (involving or directly abutting the bronchial tree), and seven were peripheral (surrounded by parenchyma). Three central and one peripheral lesion had CT numbers indicative of fo...

journal_title：Journal of computer assisted tomography

authors： Magid D,Siegelman SS,Eggleston JC,Fishman EK,Zerhouni EA

更新日期：1989-03-01 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