Browsing Research Articles (Nuclear Medicine) by Title
Now showing items 4-19 of 19
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Dual energy window imaging for optimisation of P/V ratios in VP SPECT
(SpringerOpen, 2021)Purpose: Ventilation–perfusion single-photon emission computed tomography (VP SPECT) plays an important role in pulmonary embolism diagnosis. Rapid results may be obtained using same-day ventilation followed by perfusion ... -
The elimination of errors caused by prior technetium-99m scintigraphy on iodine-131 thyroid uptake measurements.
(Health & Medical Publishing Group, 1987)Coincidence summing of technetium-99m (99mTc) pulses may disturb iodine-131 (131I) thyroid uptake measurements if these are obtained after 99mTc thyroid scintigraphy performed on the same day. The magnitude of the error ... -
First-pass determination of the right ventricular ejection fraction using two regions of interest and the right anterior oblique view
(HMPG, 1984)The right ventricular ejection fraction (RVEF) was determined on the right anterior oblique view in 9 patients during the first pass of a bolus of technetium-99m employing a gamma camera with high count-rate capability. ... -
Hybrid imaging using low-dose, localizing computed tomography enhances lesion localization in renal hyperparathyroidism
(Lippincott, Williams & Wilkins, 2014-03)Background Preoperative localization of parathyroid lesions is potentially beneficial in renal patients with hyperparathyroidism. The aim of this study was to determine the localizing value of hybrid single-photon emission ... -
Metastatiese verkalkinge soos aangetoon met tegnesium-99m-pirofosfaatbeenflikkergrafie : gevalbesprekinge
(Health & Medical Publishing Group, 1982)Two cases of chronic renal failure showing very interesting technetium-99m-pyrophosphate bone scans are presented. In both cases striking uptake of activity was shown in the left ventricle of the heart, the mucosa of the ... -
Methamphetamine dependence with and without psychotic symptoms : a multi-modal brain imaging study
(Elsevier, 2018)Objective: Methamphetamine dependence can lead to psychotic symptoms which may be mediated by frontal, striatal, limbic, and thalamic regions. There are few neuroimaging data that allow comparison of individuals with ... -
Nuclear medicine in South Africa
(HMPG, 2003-08)ENGLISH ABSTRACT: Why should an issue of CME, a publication primarily directed at generalists, be devoted to nuclear medicine? I am reminded from time to time of how unfamiliar many of my colleagues are with this ... -
Peptide receptor radionuclide therapy of neuroendocrine tumors : how important is internal dosimetry?
(Health and Medical Publishing Group, 2019)No abstract available -
Quantifying the risks of radiation exposure
(Health & Medical Publishing Group, 1986-09)The considerations leading to the recommendation of dose-equivalent limits by the International Commision for Radiological Protection are outlined. The dose-equivalent limits are based on radiation risk factors estimated ... -
Two simple inexpensive photographic methods for viewing ECG-gated radionuclide blood pool images
(HMPG, 1979-04)Although the ECG-gated radionuclide blood pool scan (GBPS) has become an established method for studying regional myocardial wall motion, it is usually performed with the aid of an expensive computer system. A simple, ... -
An update on the management of breast cancer in Africa
(BioMed Central, 2017-02-14)ENGLISH SUMMARY : Background: There is limited information about the challenges of cancer management and attempts at improving outcomes in Africa. Even though South and North Africa are better resourceds to tackle the ... -
The use of HEPES-buffer in the production of gallium-68 radiopharmaceuticals – time to reconsider strict pharmacopoeial limits?
(SpringerOpen (part of Springer Nature), 2021-04-01)ENGLISH ABSTRACT: HEPES (4-(2-hydroxyethyl) piperazine-1-ethanesulfonic acid) is a buffer that is used in the radiolabelling of gallium-68 compounds. The beneficial effects of HEPES on molar activity in bioconjugates ... -
Validation of a cost-effective alternative for a radiochromatography method to be used in a developing country
(SpringerOpen (part of Springer Nature), 2020-04-10)Introduction: The radiochemical purity (RCP) of technetium-99m labelled radiopharmaceuticals (RP) is important to ensure optimal scintigraphic image quality. In low-income settings, it may not be possible to use compendial ... -
Validation of equations to estimate glomerular filtration rate in South Africans of mixed ancestry
(Health & Medical Publishing Group, 2020-02-26)Background. The Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations are two commonly used formulae to estimate glomerular filtration rate (GFR) in adults. ... -
Ventilasiestudies van die long met kripton-81m
(HMPG, 1981-08)During a 2-year study period it was found that krypton-81m was useful in routine clinical practice. During this period 1563 technetium-99m perfusion studies and 807 krypton-81m ventilation studies were performed. A distinct ... -
Die waarde van speldgatkollimator-opnames in die flikkergrafiese diagnose van werwelpatologie
(Health & Medical Publishing Group, 1989)Recent findings suggested a possible role for pinhole collimator scintigraphy to differentiate between metastases, infection and fractures of the vertebrae. The aim of this study was to verify these findings and to ascertain ...
