PubMed Health⌕ Search

Biomedical subjects

J H Göthlin

Publications and source records attributed to J H Göthlin.

At least 19 recordsLinked to original sources
PubMed1991

Imaging of solid renal masses.

Detection of renal cell carcinoma is still a major task for the radiologist. Ultrasonography has replaced excretory urography as the most cost-effective means of detecting early renal cell carcinoma. Detection of small tumors confined to the renal parenchyma has made partial nephrectomy a safe therapeutic alternative, but a longer life expectancy has not been proved. Doppler ultrasonography and MR imaging are used to help distinguish between benign and malignant renal tumors with initial equivocal results. However, accurate diagnostic criteria for CT have been developed and CT remains the standard diagnostic method for characterizing and staging renal tumors. MR imaging has one major advantage: it depicts the degree of tumor involvement of the renal vein and inferior vena cava. Percutaneous fine-needle aspiration biopsy is still important for discriminating between benign and malignant tumors as well as enlarged lymph nodes.

Carcinoma, Renal Cell↗
PubMed1990

Intravenous urography versus ultrasonography in evaluation of women with recurrent urinary tract infection.

Intravenous urography and ultrasonography were compared prospectively in 120 women with recurrent urinary tract infection. The median age was 44 years (range 15-85). There was good correlation between the two methods in detecting hydronephrosis, calculi greater than or equal to 5 mm, and major post-pyelonephritic scarring. Urography was superior in detecting small cortical scars, slight caliceal dilatation, and less than or equal to 4 mm calculi. Based on the good results, low cost, and absence of radiation hazards or contrast media reactions, we conclude that ultrasonography may replace urography when a radiological screening of the upper urinary tract is deemed necessary in women with recurrent urinary tract infection.

Adolescent↗
PubMed1989

Ultrasonography versus urography as preoperative investigation prior to hysterectomy.

Ultrasonography (US) has been compared with urography (IVU) as a preoperative investigation prior to hysterectomy in 62 patients. In 38 patients the urinary tract was deemed normal by both US and IVU. US and IVU coincided in varying degrees of hydronephrosis in 8 patients and disagreed in one. Of 5 double ureters, US missed 2. IVU showed expansile lesions in 5 kidneys where US showed benign cysts. No severe contrast media reactions were observed. We recommend that preoperative urography should be replaced by preoperative ultrasonography when a screening examination of the upper urinary tract morphology is deemed necessary prior to hysterectomy.

Female↗
PubMed1989

Continuing reject-repeat film analysis program.

A continuing image quality assurance and control program has been employed in the Department for over 9 years. One of the tools used in assessing quality has been reject-repeat analyses performed 9 times. The reject rate dropped from 15% in 1980-1981 to 8.4% in 1982. After moving to a new department with new film processing systems and, in part, new diagnostic equipment, the rejection rate increased to 13.2%. New and renewed procedures such as increased control and adjustment of technical equipment (in particular the automatic daylight film processing systems), information and education, decreased the rejection rates to 9.2 and 6.6% on 2 analysis occasions in 1987, and to 6.4% in 1988. Image quality assurance and control have to be continuous activities if they are to yield favourable and economically justifiable results.

Cost-Benefit Analysis↗
PubMed1989

Elimination of electrostatic discharges in automatic daylight film processor systems. A simple, cost-effective solution. Technical note.

Automatic daylight film processors may produce heavy electrostatic discharges on radiographic films when using other brands of film than those produced by the processor manufacturer. This is a disadvantage, as it can eliminate competition when purchasing film. By 1. earthing the processor feeder rollers, 2. coating them with aluminium paint, and 3. isolating the wheels with a conventional insulating spray for electric cables, the artifacts vanish, and various brands of film can be used.

Cost-Benefit Analysis↗
PubMed1988

Ultrasonography versus excretory urography: value in urological disease.

Considerable savings in cost and some reduction in gonad dose and contrast medium allergy can be expected if excretory urography can be replaced by real-time ultrasonography as the first examination in upper urinary tract disease. For one year, all patients referred for excretory urography (UG) are first examined with real-time ultrasonography (US) to establish whether UG can be completely replaced by US, or the indications for which US should be the first examination of choice. The results in 200 consecutive patients indicate that both methods sometimes fail, but not in the same patients. A combination of the two may be unbeatable, but uneconomical. The results obtained over one year may give the answer. Hopefully studies at other centres will be initiated to increase the size of the case material.

Cost-Benefit Analysis↗
PubMed1988

Calculation of internal costs in a department of diagnostic radiology.

Even though high technology accounts for less than 1% of health care costs in industrialized countries, radiology is often blamed for their escalation. In a squeezed health care economy it is important to know the real cost of diagnostic radiological procedures in order to set priorities and realistic budgets, and to bill (actually or fictively) referring departments, physician's patients, insurance companies etc., and to demonstrate real costs of radiology for politicians and clinicians. The so-called Radiology Points used in the Nordic countries are in our opinion not adequate as basis for "price tags", even if to some extent they do reflect work and expenses involved in an examination. The real costs of ultrasonography (US) and excretory urography (UG) of the upper urinary tract have been compared in a study being performed to determine whether US can replace UG as the first examination in upper urinary tract disease. The cost of US is 53% (high osmolar contrast media) or 27% (anionic contrast media) of UG. If US can replace UG as the first examination in upper urinary tract disease the cost savings will be dramatic, especially if low osmolar or anionic contrast media are routinely used.

Cost-Benefit Analysis↗
PubMed1987

Simplified slide production in radiology departments.

A slide-producing system is described, the goal of which is to copy radiographs, typewritten and printed text onto 35 mm film for teaching purposes, records or publication. Automation permits the equipment to be used by persons not familiar with photography. By following simple procedures, high-quality results can be obtained. Advantages of the system are low cost, small space requirements and utilisation of existing facilities such as X-ray dark rooms and processors. Any radiological department requiring quick, low-cost visual materials should consider the convenience of the system described.

Audiovisual Aids↗
PubMed1987

Cost/benefit of high technology in diagnostic radiology.

High technology is frequently blamed as a main cause for the last decade's disproportionate rise in health expenditure. Total costs for all large diagnostic and therapeutic appliances are typically less than 1% of annual expenditure on health care. CT, DSA, MRI, interventional radiology, ESWL, US, mammography, computers in radiology and PACS may save 10-80% of total cost for diagnosis and treatment of disease. Expenditure on high technology is in general vastly overestimated. Because of its medical utility, a slower deployment cannot be desirable.

Cost-Benefit Analysis↗