Biomedical subjects

J Haaga

Publications and source records attributed to J Haaga.

23 records · Page 2Linked to original sources

PubMed1977

Computed tomography: a valuable aid to the abdominal surgeon.

The application of computed tomography (CT) for diseases of the liver, pancreas, kidney, and retroperitoneum has been described. The diagnostic accuracy of CT when compared with angiography, radioisotope scanning, endoscopic pancreatography, and transhepatic cholangiography is now being studied prospectively. The attractive features of CT include low risk, wide applicability, noninvasive technics, high diagnostic accuracy, and patient acceptance.

Abdomen↗

PubMed1976

Comparative modulation transfer functions of the EMI and Delta scanners.

Spatial resolution of the EMI and Delta computed tomographic scanners has been measured by recording the response to a nylon and water sunburst phantom (Siemens star) and calculating the modulation transfer function at radii corresponding to various spatial frequencies. The resolution appears to be related primarily to the size of the matrix element, and exhibits an upper cut-off frequency somewhat in excess of 3 cycles/cm.

Computers↗

PubMed1975

Computed tomography of the thorax and abdomen; a preliminary report.

The utility of computed tomography (CT) in the study of the anatomy, physiology, and pathology of the human body has been the subject of considerable interest since the introduction of CT scanning. The advent of a new prototype scanning device has made it possible to examine a variety of abnormalities in the abdomen and thorax in a manner not previously possible. This development permits a remarkable insight into the study of human disease in vivo.

Aortography↗

PubMedDate not supplied

Reversal of the decline in breastfeeding in Peninsular Malaysia? Ethnic and educational differentials and data quality issues.

Data from the First and Second Malaysian Family Life Surveys in 1976 and 1988, respectively, are analyzed to examine long-term trends in breastfeeding in Peninsular Malaysia, educational and ethnic differences therein, and the quality of retrospective data on infant feeding. The steady decrease between the mid-1950's and mid-1970's in breastfeeding was reversed to become a nearly monotonic increase since 1975. Part of the change is attributable to the changing composition of the Malaysian population. Over time, the percentages of births to subgroups with higher rates of breastfeeding--particularly Malays and more highly educated women--have increased. However, there is also evidence of changes in rates of breastfeeding within these subgroups. Many Malaysian infants have a total duration of breastfeeding (including with supplementation) considerably shorter than WHO's recommended four months of exclusive (unsupplemented) breastfeeding. Moreover, nearly all breastfed infants are first given supplementary food or beverage shortly after birth. Breastfeeding promotion efforts in Malaysia need to emphasize the appropriate timing of and types of supplementary feeding.

Adolescent↗

PubMedDate not supplied

The response of the portal vein to an oral glucose load.

Changes of total blood flow, velocities, and cross-sectional area in the portal vein before and after oral glucose administration were studied using image-directed Doppler ultrasonography. Portal vein cross-sectional area, flow velocity, and total blood flow increased significantly compared with baseline studies. Relative increase in these values compared with baseline studies (95% confidence intervals) are presented, and future applications of this method are discussed.

Administration, Oral↗