[Magnetic resonance imaging in the diagnosis of knee joint sarcomas].

The purpose of the investigation was to study the potentialities of magnetic resonance imaging (MRI) in the diagnosis of knee joint sarcomas. The paper presents the results of examining 13 patients of different age, shows the potentialities of the technique in the identification of knee joint sarcomas, and describes the MRI semiotics of sarcomas in both the routine study and that using contrast enhancement in lesions of bone and soft tissue elements in the presence of regional metastases.

[The diagnosis of retroperitoneal hematomas].

The authors developed a method for assessment of the volume of retroperitoneal hematomas in children, based on measurements and mathematical processing of two parameters (body length or mass and the level of hematoma in relation to the lumbar spine). This method may be useful both in forensic and clinical medicine.

[X-ray diagnosis of injuries to the posterior part of the pelvic ring in children].

Proceeding from morphoroentgenological investigation of 48 isolated pelvic specimens from dead children, a new method for radiodiagnosis of fractures of lateral sacral masses (LSM) and rupture of sacroiliac joints (SIJ), based on quantitative assessment of pelvic ring deformity has been developed. Limitations of the method were established. The introduction of this roentgenometric method into clinical practice for diagnosis of injury of the posterior pelvic semiring permitted an increase in x-ray detection of LSM fractures 10-fold and SIJ ruptures 2.