Search PubMed⌕ Search

Biomedical subjects

J J Koevoets

Publications and source records attributed to J J Koevoets.

2 recordsLinked to original sources
PubMed1996

Text processing by digital voice recognition.

OBJECTIVE: To evaluate digital voice recognition in free text mode. STUDY DESIGN: A standard medical text (182 words and punctuation marks) was dictated four times each by six people using a commercially available voice recognition system. RESULTS: The time used, including the time needed for making corrections, decreased from a median of 14.5 (6.3-18.8) minutes in the first session to a median of 6.7 (5.1-15.7) in the fourth session. the number of corrections necessary in the last session was a median of 20.5 (15-97)-i.e., 11% of the number of words in the text. All users described working with the system as highly strenuous. Dictating the same text with a dictaphone took median 1.4 (0.9-1.6) minutes and about five minutes of typing and correction time. CONCLUSION: Although the total time was about the same with the two methods, the time for the pathologist increased fourfold when using the voice recognition system. To obtain acceptable input speed, an appropriate template module is essential.

Signal Processing, Computer-Assisted↗
PubMed1989

The influence of fixatives and other variations in tissue processing on nuclear morphometric features.

The influence on the area and numerical density of nuclei was investigated in 5-mm-thick slices of guinea pig liver for different fixatives and variations in tissue processing: delay in fixation, air drying, degree of acidity of 10% formalin (= 4% formaldehyde), Bouin and mercury-formalin fixatives, acetone and ethanol dehydration and understretching and overstretching of the paraffin-embedded sections. Air drying (either forced or as a result of delayed fixation), the type of fixative and the degree of acidity affected the nuclear area. Regarding the latter, nuclear area was approximately 25% lower for pH less than or equal to 3 as compared with pH greater than 5. In comparison with the standard tissue processing used, the nuclear density was higher after all of the variations studied (air drying, acetone dehydration and fixation). These findings indicate that nuclear area, in contrast to other tissue components, is relatively insensitive to variations in tissue processing. However, it is essential to regularly measure the pH of the fixative: deviations from pH = 7 should be carefully avoided in order to keep nuclear area variations as a result of tissue processing within acceptable limits.

Acetone↗