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  • 2000-2004
  • 1985-1989  (32)
  • 1987  (32)
  • Life Sciences  (22)
  • Magnetic resonance imaging
  • Nuclear reactions
  • 1
    Electronic Resource
    Electronic Resource
    Anatomy of the thoracic aorta: Magnetic resonance imaging and interpretation of flow phenomena (1987)
    Springer
    Surgical and radiologic anatomy 9 (1987), S. 141-149 
    Details
    ISSN: 1279-8517
    Keywords: Magnetic resonance imaging ; Thoracic aorta ; Gated acquisition ; Oblique slices ; Flow Phenomena
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs présentent les résultats d'une investigation concernant l'imagerie par résonance magnétique de l'aorte thoracique d'après l'étude de huit volontaires et d'un patient suspect de maladie de Takayasu mais ayant une aorte morphologiquement normale. Des coupes axiales, frontales, sagittales et obliques ont été réalisées et les résultats morphologiques sont présentés. De plus, les principaux phénomènes de flux sont expliqués et des exemples de chacun sont montrés.
    Notes: Summary The authors present the results of magnetic resonance imaging (MRI) in the investigation of the anatomy of the thoracic aorta in a group of eight volunteers and in one patient with presumptive Takayasu's disease but with normal aorta. Transaxial, coronal, sagittal and oblique slices were made and the morphologic results are presented. Major flow phenomena are also discussed and some examples given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02086599
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Topological characteristics of brainstem lesions in clinically definite and clinically probable cases of multiple sclerosis: an MRI-study (1987)
    Springer
    Neuroradiology 29 (1987), S. 530-534 
    Details
    ISSN: 1432-1920
    Keywords: Multiple scleosis, diagnosis of ; Magnetic resonance imaging ; Vascular brain disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Disseminated lesions in the white matter of the cerebral hemispheres and confluent lesions at the borders of the lateral ventricles as seen on MRI are both considered acceptable paraclinical evidence for the diagnosis of multiple sclerosis. Similar changes are, however, also found in vascular diseases of the brain. We therefore aimed at identifying those additional traits in the infratentorial region, which in our experience are not frequently found in cerebrovascular pathology. We evaluated MR brain scans of 68 patients and found pontine lesions in 71% of cases with a clinically definite diagnosis (17 out of 24) and in 33% of cases with a probable diagnosis (14 out of 43). Lesions in the medulla oblongata were present in 50% and 16%, respectively, and in the midbrain in 25% and 7%, respectively. With rare exceptions all brainstem lesions were contiguous with the cisternal or ventricular cerebrospinal fluid spaces. In keeping with post-mortem reports the morphological spectrum ranged from large confluent patches to solitary, well delineated paramedian lesions or discrete linings of the cerebrospinal fluid border zones and were most clearly depicted from horizontal and sagittal T2 weighted SE-sequences. If there is a predilection for the outer or inner surfaces of the brainstem, such lesions can be considered an additional typical feature of multiple sclerosis and can be more reliably weighted as paraclinical evidence for a definite diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350435
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging in Pelizaeus-Merzbacher disease (1987)
    Springer
    Neuroradiology 29 (1987), S. 403-405 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Pelizaeus ; Merzbacher disease ; Cerebral sclerosis diffuse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pelizaeus-Merzbacher's disease is a progressive encephalopathy with demyelination of the cerebral white matter. The diagnosis can not be made on clinical or biological grounds: pathological investigation is necessary to confirm tigroid demyelination. CT scanning failed to visualize this type of anomaly but detection is now possible with the advent of magnetic resonance imaging (MRI). The authors studied the case of a boy who, at the age of 8 presented with symptoms characteristic of the disease: rotatory nystagmus, progressive encephalopathy, and inherited X-linked recessive traits. Magnetic resonance imaging revealed a high signal in the supra-tentorial white matter and the usual contrast was inverted. The authors believe that MRI can make an important contribution to the diagnosis of the disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348925
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  • 4
    Electronic Resource
    Electronic Resource
    Production of single-cell protein with cellulomonas sp. on hempstalk wastes (1987)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 103-109 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Strains of Cellulomonas isolated from enrichment cultures with cellulose powder were cultivated with hempstalk wastes as the sole carbon source in a mineral medium. The yields of protein were not significantly different using the crude or alkali pretreated substrate in flasks experiments. Up to 12.5% protein was obtained on the untreated substrate with the best strain cultivated in a small fermenter.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370070202
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Automatisiertes Laborfermentorsystem mit Mikrorechner „Elektronica-60“ gekoppelt (1987)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 515-519 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The microprocessor complex “Biotron-M” designed for automation of experiments in microorganisms cultivation carried out simultaneously on no more than 3 fermenters is described. The complex is based on KTS LIUS-2 and microcomputer “Elektronika-60”.Information and control functions as well as the complete system are considered. The operating system “Rafos” with double-task monitor is used as the system software. Special software is represented by a set of program modules performing the functions of the complex.An example is given concerning the operation of “Biotron-M” together with fermentation plant “FU-8”.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370070608
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Assimilation of methanol by Yeasts (1987)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 31-38 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Candida lipolytica was cultured on a methanol containing medium as the only C source. The influence of different concentrations of methanol and ammonium sulphate and the effect of addition of some biological active materials to the methanol containing medium were studied.Dry cell yield of C. lipolytica and protein content were determined to be 23.1 g of cells/100 g of methanol added and 40.2%, respectively. Total lipids, phospholipids, keto acid and amino acid composition were estimated. The amino acid composition of the protein was comparable to the composition of the other reported single cell proteins (SCP). These results indicate that C. lipolytica is potentially important for fodder use.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370070108
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Submerged fermentation of cellolignin materials (compared with solid-state fermentation and other alternatives) (1987)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 157-166 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The review characterizes the submerged and solid state fermentation processes (SF and SSF) for obtaining of microbial biomass protein (MBP) on cellulose- and lignin-containing (CL) agricultural wastes (straw, wine, branches of fruit trees). There are discussed other alternatives as well. The main technological parametres are presented (protein (biomass) yield, degree of available substrate utilization, process efficiency, etc.). The use of a special stirring system of the authors' design for mycelial cultures results in an increase of CL substrate concentration in the initial nutrient medium from 2% to 8%of dry matter (DM) and in a threefold increase of the specific productivity (from 0.07 g biomass/l · h to 0.21 g biomass/l · h). The technological parametres can be increased also in the processes with substrate addition. The obtained preparations are analyzed as to their usefulness for the feeds of ruminants.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370070214
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of the heart compared with anatomic and ultrasonographic data (1987)
    Springer
    Surgical and radiologic anatomy 9 (1987), S. 303-314 
    Details
    ISSN: 1279-8517
    Keywords: Magnetic resonance imaging ; Ultrasonography ; Heart
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs présentent un travail de corrélation entre l'aspect anatomique du cœur et les images obtenues en imagerie par résonance magnétique (IRM) et en échographie. Six cœurs ont été étudiés par IRM puis découpés suivant les mêmes plans de coupe. Les résultats sont présentés et comparés aux données obtenues in vivo chez des volontaires à la fois en IRM et en échographie. La corrélation entre images IRM de pièces anatomiques et coupes anatomiques est excellente, les plus fins détails anatomiques étant reproduits. L'utilisation de coupes en double obliquité permet l'obtention d'incidences similaires à celle de l'échographie. Ces mêmes incidences peuvent être obtenues in vivo. L'étude morphologique du cœur est ainsi extrêmement précise, de même que l'étude des volumes cardiaques.
    Notes: Summary The authors present a correlation study between the anatomy of the heart and its appearance with magnetic resonance imaging (MRI) and ultrasonography (US). Six hearts were studied by MR, then sliced along the same planes. The results are presented and compared with the data obtained in volunteers by MRI and ultrasonography. The correlation between the MRI of isolated hearts and their anatomic slices is excellent, the thiniest anatomic details are reproduced. The use of double oblique slices provides incidences similar to those of ultrasonography. The same incidences can be obtained in vivo. The morphologic study of the heart by these imaging techniques is thus very precise, as well as the study of cardiac volumes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02105302
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  • 9
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of colloid cysts of the third ventricle (1987)
    Springer
    Neuroradiology 29 (1987), S. 10-14 
    Details
    ISSN: 1432-1920
    Keywords: Colloid cyst of the third ventricle ; Third ventricle ; Brain tumor ; Computer tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two cases of colloid cyst of the third ventricle are reported. Their computed tomographic (CT), magnetic resonance (MR) and neuropathological features are presented. The MR findings were different in the two cases for reasons not yet fully explained, full biochemical and biophysical analyses of the cyst contents not being available. Neuropathologically, the only significant difference was the abundant presence of cholesterin crystals in the colloid of case 1 and their absence in case 2. One of our cases is also peculiar from a CT point of view, since it was primarily hypodense and did not enhance on intravenous contrast administration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341029
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  • 10
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of human cerebral infarction: Enhancement with Gd-DTPA (1987)
    Springer
    Neuroradiology 29 (1987), S. 422-429 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Gadolinium-DTPA (Gd-DTPA) ; Brain infarction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five patients (1 female and 4 males) with cerebral infarction of 4 h to 27 months duration were studied 9 times with magnetic resonance (MR) using Gd-DTPA. Spin-echo (SE) MR images (MRI) were obtained before and after the administration of Gd-DTPA, and correlative CT scans were performed on the same day. In 2 cases, 4 h and 27 months after the ictus, there was no enhancement with Gd-DTPA. There was faint enhancement in 2 cases with cerebral infarction of about 24h duration and obvious enhancement in all cases in the subacute stage. Compared with enhanced CT, MR using Gd-DTPA demonstrated more obvious enhancement of infarcted areas. MR enhancement using Gd-DTPA showed a gradual increase and the accumulated Gd-DTPA in infarcted areas slowly diffused to the periphery. MR enhancement with Gd-DTPA is similar to that of enhanced CT, but may be more sensitive in the detection of blood brain barrier breakdown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341737
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