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Biomedical subjects

F Y Khoo

Publications and source records attributed to F Y Khoo.

17 recordsLinked to original sources
PubMed1991

Moulds of the nasopharynx.

A method of making moulds of the nasopharynx is described. Thirteen moulds are illustrated. A mould constitutes one form of morphologic study of the nasopharynx. A mould shows clearly the form and shape of nasopharynx. A positive cast may be made. Moulds are useful for class demonstrations and for teaching purposes.

Adult↗
PubMed1979

The retroconchal space of the lateral nasal wall.

The retroconchal space is defined in this article as the posterior part of the lateral wall of the nasal fossa. Considerable variations in the size and shape of this retroconchal space exist, these in turn depending on the variations of the middle and inferior conchae. The retroconchal space can be defined in plain radiographs or in nasopharyngograms. This would be of help in pinpointing the site of a neoplasm.

Humans↗
PubMed1977

Detection of nasopharyngeal carcinoma from measurements made on the lateral neck radiograph.

Tables of normal values are available for the measurement of four sagittal diameters (Roof, FM, C1 and C2) and areas of the soft tissue of the nasopharynx as seen in the lateral neck radiograph. The lateral neck radiographs of 100 nasopharyngeal carcinoma (NPC) cases as well as 100 normal controls of corresponding sex and age distribution are measured to ascertain the usefulness of the above measurement in the detection of NPC. Depending on the method of calculation, figures for positive results (sensitivity) may rise to as high as 85% but the specificity (i.e. probability of a correct diagnosis in a person without NPC) is at the same time lowered to 92%. The detection of NPC from any lateral neck radiograph, however, presents a different problem compared to the situation when a person clinically suspected of having NPC is referred for radiography. Many factors are involved in the former situation and it is to this situation that the predictive value (PV) of the scores has to be employed.

Adolescent↗
PubMed1977

Radiology of the Eustachian fossa.

The Eustachian fossa, when visualised in contrast radiography and cinefluorography, shows a wide variety of shapes and sizes. Moreover, the fossa also exhibits varying degrees of changes during swallowing. Brief accounts of the technique of contrast radiography and the appearance of the normal nasopharyngograms are given to facilitate the understanding of the radiological features of the fossa.

Adolescent↗