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Richard D. Penn, Randal Walser, Diane Kurtz and Laurens Ackerman

contrast enhancement in cranial computed tomography. Part 1: The tissue-blood ratio of contrast enhancement. Part 2: Contrast enhancement and the blood-tissue barrier. Radiology 117 : 589 – 593 , 1975 Gado MH, Phelps ME, Coleman RE: An extravascular component to contrast enhancement in cranial computed tomography. Part 1: The tissue-blood ratio of contrast enhancement. Part 2: Contrast enhancement and the blood-tissue barrier. Radiology 117: 589–593, 1975 6. Kistler JP , Hochberg FH , Brooks BR , et al : Computerized

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Thomas H. Milhorat, Mary K. Hammock, Techen Chien and Donald A. Davis

lateral ventricle choroid plexuses for hydrocephalus in our clinic. An opportunity was afforded to measure the rate of CSF formation when the patient presented 5 years later with a failed ventriculoperitoneal shunt and evidence of progressive ventriculomegaly on serial cranial computed tomography (CCT) scans. Case Report A 3-week-old baby boy with meningitis and ventriculitis developed severe communicating hydrocephalus ( Fig. 1 ). In spite of systemic antibiotics, the ventriculitis persisted and the head circumference increased at a rate of 2 cm per week. In July

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Javad Towfighi, Larissa T. Bilaniuk, Robert A. Zimmerman, Thomas W. Langfitt and Nicholas K. Gonatas

✓ The authors present a case in which bilateral posttraumatic hemorrhages in choroid plexus hemangiomas were demonstrated by computed tomography and histopathological study.

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hemangiomas demonstrated by computed tomography Javad Towfighi Larissa T. Bilaniuk Robert A. Zimmerman Thomas W. Langfitt Nicholas K. Gonatas August 1976 45 2 218 222 10.3171/jns.1976.45.2.0218 Pineal apoplexy associated with anticoagulant therapy Michael L. J. Apuzzo Lycurgus M. Davey Elias E. Manuelidis August 1976 45 2 223 226 10.3171/jns.1976.45.2.0223 Cerebrospinal fluid fistula from fractured acrylic cranioplasty plate Harvey M. Henry Caesar Guerrero Robert A. Moody August 1976 45 2 227 228 10.3171/jns.1976.45.2.0227 Multifocal glioma of the brain

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Richard D. Penn and Diane Kurtz

be securely stated. If this relationship can be measured, it should be possible from CT density measurements and regional blood volume changes to determine intracranial pressure gradients in man by noninvasive tests. References 1. Clasen RA , Huckman MS , Pandolfi S , et al : Computed tomography of vasogenic cerebral edema , in Pappius HM , Feindel W (eds): Brain Edema: Formation and Resolution. New York : Springer-Verlag , 1976 (In press) Clasen RA, Huckman MS, Pandolfi S, et al: Computed

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R. Michael Scott, Volker K. H. Sonntag, Lloyd M. Wilcox, Lester S. Adelman and Thomas H. Rockel

examinations have shown no significant changes. Computed tomography (CT) obtained 2 months postoperatively revealed no evidence of hydrocephalus or mass. Discussion Chronic optochiasmatic arachnoiditis is the most likely cause of a chiasmal compression syndrome following tuberculous meningitis. In 15 patients with treated tuberculous meningitis with findings suggestive of chiasmal lesions, Feld and Sicard 3 reported that 13 had chronic arachnoiditis and only two had tuberculomas. Symptoms of chiasmatic compression from chronic arachnoiditis may occur late in the

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Stanley Tchang, Guiseppe Scotti, Karel Terbrugge, Denis Melançon, Gary Bélanger, Curt Milner and Romeo Ethier

angio-tomography: the use of 100 cc. of Hypaque M-60%. Clinical and experimental results. Presented at the First International Symposium of Computerized Axial Tomography, Montreal, May 31–June 1, 1974 4. Gado MH , Phelps ME , Coleman RE : An extravascular component of contrast enhancement in cranial computed tomography. Part I: The tissue-blood ratio of contrast enhancement. Part II: Contrast enhancement and the blood-tissue barrier. Radiology 117 : 589 – 597 , 1975 Gado MH, Phelps ME, Coleman RE: An extravascular

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Joseph C. Maroon, William O. Bank, Burton P. Drayer and Arthur E. Rosenbaum

aspiration of intracranial masses. Acknowledgment Mr. Don Dallman of the Children's Hospital of Pittsburgh designed the metal needle used for tumor biopsy and aspiration. References 1. Alfidi RJ , Haaga J , Meaney TF , et al : Computed tomography of the thorax and abdomen; a preliminary report. Radiology 117 : 257 – 264 , 1975 Alfidi RJ, Haaga J, Meaney TF, et al: Computed tomography of the thorax and abdomen; a preliminary report. Radiology 117: 257–264, 1975 2. Haaga JR , Alfidi RJ

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Computerized tomography and surgical treatment in intracranial suppuration

Report of 30 consecutive unselected cases of brain abscess and subdural empyema

Mauritius J. Joubert and Stephan Stephanov

. Experience at the Mayo Clinic, in Whisnant JP, Sandok BA (eds): Cerebral Vascular Diseases, Ninth Conference . New York/San Francisco/London: Grune & Stratton, 1975, pp 195–201 5. Baker HL Jr : The impact of computed tomography on neuroradiologic practice. Radiology 116 : 637 – 640 , 1975 Baker HL Jr: The impact of computed tomography on neuroradiologic practice. Radiology 116: 637–640, 1975 6. Beller AJ , Sahar A , Praiss I : Brain abscess. Review of 89 cases over a period of 30 years. J Neurol

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Albert V. Messina, Laurence J. Guido and Arie L. Liebeskind

, Messina AV , Sackett JF : Computed tomography in metastatic disease of the brain. Radiology 119 : 115 – 120 , 1976 Deck MDF, Messina AV, Sackett JF: Computed tomography in metastatic disease of the brain. Radiology 119: 115–120, 1976 3. Hulme A : Suppurative lesions of the brainstem. J Neurol Neurosurg Psychiatry 24 : 291 – 293 , 1961 Hulme A: Suppurative lesions of the brainstem. J Neurol Neurosurg Psychiatry 24: 291–293, 1961 4. Messina AV : Computed tomography: contrast