SA Journal of Radiology - Volume 13, Issue 2, 2009
Volume 13, Issue 2, 2009
Author Clive SperrynSource: SA Journal of Radiology 13, pp 22 –28 (2009)More Less
The Radiological Society of South Africa (RSSA) is the professional association of radiologists in South Africa and Namibia. The objectives of the RSSA, as outlined in its constitution, are :
- to define, establish and promote sound relationships among radiologists and between radiologists and hospitals, public and private institutions, government authorities, the international radiological community, radiological groups worldwide, the medical profession in general, and the public
- to promote the common interests of its members
- to promote research in, and advance the science and art of, diagnostic radiology and imaging.
A dose audit of fluoroscopy examinations at Charlotte Maxeke Johannesburg Academic Hospital : analysis of preliminary results : review articleSource: SA Journal of Radiology 13, pp 24 –28 (2009)More Less
Purpose. To retrospectively analyse the radiation doses delivered to patients undergoing fluoroscopy examinations in terms of the skin dose and the dose-area product (DAP) readings.
Materials and methods. The subjects of this study were patients who underwent fluoroscopy examinations on either of the two available digital Philips Medical Systems MultiDiagnost Eleva fluoroscopy units at Charlotte Maxeke Johannesburg Academic Hospital during the period August 2007 to March 2008. The skin dose was computed by the system's computer while the DAP values were obtained from a built-in DAP meter installed on the fluoroscopy unit. The following tests were performed : barium swallow, barium meal, barium enema, hexabrix swallow, gastrografin meal, voiding cystourethrogram, fistulogram, myelogram, nephrostomy and loopogram.
Results. An analysis of 331 examinations is presented. The following values were deduced from the recorded data : the mean and range of the skin doses and DAPs, mean screening time and mean fluoroscopy duration. An analysis of the screening time for the various examinations showed a weak correlation (r = 0.59) between skin dose and screening time, while a poor correlation (r = 0.42) was deduced between DAP reading and screening time.
Conclusion. There was a wide spread in the radiation doses registered for any one given type of examination. The large variability in the radiation dose delivered shows that fluoroscopic examinations stand to gain from dose optimisation. The usefulness and potential use of DAP meters for dose optimisation in radiology are shown. In line with efforts to optimise the dose from diagnostic radiography examinations, the authors recommend the establishment of diagnostic reference levels (DRLs) in South Africa for the most frequent examinations in general radiography, fluoroscopy, mammography and computed tomography.
Source: SA Journal of Radiology 13, pp 29 –32 (2009)More Less
Spinal segmental dysgenesis is a rare congenital spinal abnormality seen in neonates and infants, in which a segment of the spine and spinal cord fails to develop normally. The condition is segmental in nature, with normal vertebrae above and below the malformation. It is commonly associated with various abnormalities that affect the heart and genitourinary and gastrointestinal tracts and skeletal systems. We report two cases of spinal segmental dysgenesis with associated abnormalities.
Trans-abdominal ultrasonic findings correlated with CD4+ counts in adult HIV-infected patients in Benin, NigeriaSource: SA Journal of Radiology 13, pp 34 –40 (2009)More Less
Objective. The objective of this study was to document the abdominal ultrasound findings in HIV-infected patients and compare these with their CD4+ counts.
Patients and methods. Three hundred confirmed HIV-positive patients underwent abdominal ultrasonography at the University of Benin Teaching Hospital from November 2007 to January 2008. Each patient's sonographic findings were correlated with their CD4+ counts using the World Health Organization's HIV classification index.
Results. Splenomegaly, hepatomegaly, renomegaly, hyperechoic splenic parenchyma, increased renal echogenicity and lymphadenopathy are among the common sonographic findings. However, few of the ultrasound findings correlated statistically with the CD4+ counts.
Conclusion. The use of ultrasound as a baseline imaging modality in HIV-infected patients should be promoted. Its use is invaluable in the assessment of the disease state and in the monitoring of therapy and management of these immune-compromised individuals, who may have several abdominal presentations.