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Peak potential meter applied to X-ray tubes in mammal radiography systems; Medidor do potencial de pico aplicado em tubos de raio-X de sistemas mamograficos

Abstract

It is of a great importance to identify accurately the real peak potential (or simply, KVp) applied to a X-ray tube purposed to medical diagnosis, since it defines the beam energetic quality in terms of photons penetration power. Mainly in mammographic systems. it is of fundamental relevance the KVp accurate measurement because the soft tissues involved in this kind of examination provides different absorption - and, hence, clear contrast on mammographic film - just in a very restrict energetic range. Thus a device to measure KVp with adequate accuracy in mammographic units, using the basic principles of scintillation detection, was developed. This system is therefore composed of a NaI(Tl) crystal which is a X-ray sensor - replacing radiographic films which usually are a source of errors in these measurements - , a photo multiplier tube and changed into amplified electric pulses. Finally the electronic circuit, after adequate pulses treatment, shows instantaneously the actual KVp value in the test on displays. (author) 2 refs.
Authors:
Schiabel, Homero; Frere, Annie F; [1]  Andreeta, Jose P [2] 
  1. Sao Paulo Univ., Sao Carlos, SP (Brazil). Escola de Engenharia
  2. Sao Paulo Univ., Sao Carlos, SP (Brazil). Inst. de Fisica e Quimica
Publication Date:
Dec 31, 1989
Product Type:
Conference
Report Number:
INIS-BR-3709; CONF-8908308-
Reference Number:
SCA: 550602; PA: AIX-30:014956; EDB-99:038295; SN: 99002076040
Resource Relation:
Conference: 1. regional meeting of automation and instrumentation, 1. Encontro regional de automacao e instrumentacao, Vitoria (Brazil), 9-12 Aug 1989; Other Information: DN: 2 refs.; PBD: 1989
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; DIAGNOSIS; MAMMALS; MEDICINE; NUCLEAR MEDICINE; RADIOLOGY; X-RAY EQUIPMENT; X-RAY RADIOGRAPHY; X-RAY TUBES
OSTI ID:
326055
Research Organizations:
Espirito Santo Univ., Vitoria, ES (Brazil). Centro Tecnologico
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE99618427; TRN: BR99H0037014956
Availability:
INIS; OSTI as DE99618427
Submitting Site:
BRN
Size:
7 p.
Announcement Date:

Citation Formats

Schiabel, Homero, Frere, Annie F, and Andreeta, Jose P. Peak potential meter applied to X-ray tubes in mammal radiography systems; Medidor do potencial de pico aplicado em tubos de raio-X de sistemas mamograficos. Brazil: N. p., 1989. Web.
Schiabel, Homero, Frere, Annie F, & Andreeta, Jose P. Peak potential meter applied to X-ray tubes in mammal radiography systems; Medidor do potencial de pico aplicado em tubos de raio-X de sistemas mamograficos. Brazil.
Schiabel, Homero, Frere, Annie F, and Andreeta, Jose P. 1989. "Peak potential meter applied to X-ray tubes in mammal radiography systems; Medidor do potencial de pico aplicado em tubos de raio-X de sistemas mamograficos." Brazil.
@misc{etde_326055,
title = {Peak potential meter applied to X-ray tubes in mammal radiography systems; Medidor do potencial de pico aplicado em tubos de raio-X de sistemas mamograficos}
author = {Schiabel, Homero, Frere, Annie F, and Andreeta, Jose P}
abstractNote = {It is of a great importance to identify accurately the real peak potential (or simply, KVp) applied to a X-ray tube purposed to medical diagnosis, since it defines the beam energetic quality in terms of photons penetration power. Mainly in mammographic systems. it is of fundamental relevance the KVp accurate measurement because the soft tissues involved in this kind of examination provides different absorption - and, hence, clear contrast on mammographic film - just in a very restrict energetic range. Thus a device to measure KVp with adequate accuracy in mammographic units, using the basic principles of scintillation detection, was developed. This system is therefore composed of a NaI(Tl) crystal which is a X-ray sensor - replacing radiographic films which usually are a source of errors in these measurements - , a photo multiplier tube and changed into amplified electric pulses. Finally the electronic circuit, after adequate pulses treatment, shows instantaneously the actual KVp value in the test on displays. (author) 2 refs.}
place = {Brazil}
year = {1989}
month = {Dec}
}