Wavelength-tuning interferometry of intraocular distances.

We describe basic principles of wavelength-tuning interferometry and demonstrate its application in ophthalmology. The advantage of this technique compared with conventional low-coherence interferometry ranging is the simultaneous measurement of the object structure without the need for a moving reference mirror. Shifting the wavelength of an external-cavity tunable laser diode causes intensity oscillations in the interference pattern of light beams remitted from the intraocular structure.

[Risk assessment of irradiation of tissue with metal implants].

Authors examine the influence of metal implants on the distribution of ionizing radiation in tissue. In vivo measurements in a patient are seldom possible. The risk can be assessed with sufficient accuracy on the basis of various experimental dosimetric methods, histological changes in the irradiated volume and the tolerance to the physical stress, published in the available literature.

[Radical radiotherapy of prostate carcinoma].

Radiotherapy is an effective treatment modality of prostate carcinoma. Considering the limited radiosensitivity of this tumour it is necessary to use relatively high doses of radiation. Modern technology offers the possibility to perform high-dose radiotherapy with acceptable toxicity.

[Treatment of early stages of ovarian carcinoma. Evaluation of experience at the Institute of Radiation Oncology over a 10-year period (1983-1993)].

The authors evaluated in a retrospective study the therapeutic results of ovarian carcinoma stage FIGO I (68 patients) and FIGO II (28 patients) attained in the Institute of Radiation Oncology, Prague during the ten-year period from 1983-1993. Total survival and survival without relapse within five years are 77% in stage I and 74% in stage II. The corresponding values of five-year survival without relapse were 56% and 58% resp.

Symmetrical multifocal liposarcoma.

Multiple liposarcomas are extremely rare. We report on a patient with liposarcoma of the right lower limb who had undergone surgery and radiotherapy 4 years previously for a liposarcoma in the left lower limb. An outline of the management is discussed and a short review of available literature is given.