Standardization of clinical laboratories in Africa: a multidisciplinary approach to identify innovative and sustainable technical solutions

Utilizing Dark Field Electron Microscopy to Produce Lantern Slides

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050597 ◽

1974 ◽

Vol 32 ◽

pp. 116-117

Author(s):

J. N. Meador ◽

C. N. Sun ◽

H. J. White

Keyword(s):

Electron Microscope ◽

Electron Micrographs ◽

Dark Field ◽

Limiting Factor ◽

Clinical Laboratories ◽

Field Electron ◽

Time Element ◽

Field Electron Microscopy ◽

Dark Field Electron ◽

Dark Field Micrographs

The electron microscope is being utilized more and more in clinical laboratories for pathologic diagnosis. One of the major problems in the utilization of the electron microscope for diagnostic purposes is the time element involved. Recent experimentation with rapid embedding has shown that this long phase of the process can be greatly shortened. In rush cases the making of projection slides can be eliminated by taking dark field electron micrographs which show up as a positive ready for use. The major limiting factor for use of dark field micrographs is resolution. However, for conference purposes electron micrographs are usually taken at 2.500X to 8.000X. At these low magnifications the resolution obtained is quite acceptable.

Download Full-text

On-line image readout in CTEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100169730 ◽

1994 ◽

Vol 52 ◽

pp. 400-401

Author(s):

K.-H. Herrmann ◽

W. D. Rau ◽

R. Sikeler

Keyword(s):

Primary Electron ◽

Digital Information ◽

Electron Hole ◽

Detection Technology ◽

Long Time ◽

On Line ◽

Electron Image ◽

Optical Transfer ◽

Detection Quantum Efficiency ◽

Technical Solutions

Quantitative recording of electron patterns and their rapid conversion into digital information is an outstanding goal which the photoplate fails to solve satisfactorily. For a long time, LLL-TV cameras have been used for EM adjustment but due to their inferior pixel number they were never a real alternative to the photoplate. This situation has changed with the availability of scientific grade slow-scan charged coupled devices (CCD) with pixel numbers exceeding 106, photometric accuracy and, by Peltier cooling, both excellent storage and noise figures previously inaccessible in image detection technology. Again the electron image is converted into a photon image fed to the CCD by some light optical transfer link. Subsequently, some technical solutions are discussed using the detection quantum efficiency (DQE), resolution, pixel number and exposure range as figures of merit.A key quantity is the number of electron-hole pairs released in the CCD sensor by a single primary electron (PE) which can be estimated from the energy deposit ΔE in the scintillator,

Download Full-text

AAC Supports for Individuals With Rett Syndrome Across the Lifespan

Perspectives on Augmentative and Alternative Communication ◽

10.1044/aac24.3.74 ◽

2015 ◽

Vol 24 (3) ◽

pp. 74-85

Author(s):

Sandra M. Grether

Keyword(s):

Rett Syndrome ◽

Communication Skills ◽

Preliminary Analysis ◽

Multidisciplinary Approach ◽

Motor Deficits ◽

Complex Profile ◽

Communication Behaviors ◽

The Individual

Individuals with Rett syndrome (RS) present with a complex profile. They benefit from a multidisciplinary approach for diagnosis, treatment, and follow-up. In our clinic, the Communication Matrix © (Rowland, 1990/1996/2004) is used to collect data about the communication skills and modalities used by those with RS across the lifespan. Preliminary analysis of this data supports the expected changes in communication behaviors as the individual with RS ages and motor deficits have a greater impact.

Download Full-text

Traumatic Brain Injury: A Trauma Surgeon's Perspective

Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders ◽

10.1044/nnsld22.3.82 ◽

2012 ◽

Vol 22 (3) ◽

pp. 82-89

Author(s):

Oscar D. Guillamondegui

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Multidisciplinary Approach ◽

Trauma Team ◽

The United States ◽

Long Term Outcomes ◽

Term Care ◽

Injured Brain ◽

The Moment

Traumatic brain injury (TBI) is a serious epidemic in the United States. It affects patients of all ages, race, and socioeconomic status (SES). The current care of these patients typically manifests after sequelae have been identified after discharge from the hospital, long after the inciting event. The purpose of this article is to introduce the concept of identification and management of the TBI patient from the moment of injury through long-term care as a multidisciplinary approach. By promoting an awareness of the issues that develop around the acutely injured brain and linking them to long-term outcomes, the trauma team can initiate care early to alter the effect on the patient, family, and community. Hopefully, by describing the care afforded at a trauma center and by a multidisciplinary team, we can bring a better understanding to the armamentarium of methods utilized to treat the difficult population of TBI patients.

Download Full-text

Percutaneous Tracheostomy: A Multidisciplinary Approach

Perspectives on Voice and Voice Disorders ◽

10.1044/vvd18.2.87 ◽

2008 ◽

Vol 18 (2) ◽

pp. 87-98 ◽

Cited By ~ 3

Author(s):

Vinciya Pandian ◽

Thai Tran Nguyen ◽

Marek Mirski ◽

Nasir Islam Bhatti

Keyword(s):

Health Care ◽

Quality Assurance ◽

Data Collection ◽

Health Care Professionals ◽

Multidisciplinary Approach ◽

Percutaneous Tracheostomy ◽

Johns Hopkins Hospital ◽

Prospective Data ◽

Comprehensive Service ◽

Over Time

Abstract The techniques of performing a tracheostomy has transformed over time. Percutaneous tracheostomy is gaining popularity over open tracheostomy given its advantages and as a result the number of bedside tracheostomies has increased necessitating the need for a Percutaneous Tracheostomy Program. The Percutaneous Tracheostomy Program at the Johns Hopkins Hospital is a comprehensive service that provides care to patients before, during, and after a tracheostomy with a multidisciplinary approach aimed at decreasing complications. Education is provided to patients, families, and health-care professionals who are involved in the management of a tracheostomy. Ongoing prospective data collection serves as a tool for Quality Assurance.

Download Full-text