METHOD FOR DIAGNOSING THE CASES OF HIP JOINT AND KNEE SYNOVITIS WITH FLUID QUANTITY BEING DETERMINED THEREIN Russian patent published in 2007 - IPC A61B5/55 

FIELD: medicine.

SUBSTANCE: method involves examining patient by using magnetic resonance tomograph. Hip joint and knee joint are studied in coronal, axial and skew-sagittal planes. Zones distinguished by hyperintensive signal, showing correlation to fluid, are found on tomograms in T2 VI and IP GRE sequence. Zone of maximum area is selected from found zones set and optical density of this zone is measured. Pixels of minimum and maximum optical density are found on the zone. The values are taken for fluid density boundaries specific for given patient. Pixels having optical density belonging to the mentioned range are marked on all zones. The marked pixels are summed up in N_co cutoffs over each cutoff of scanned series. The number of virtual marked pixels in single inter-cutoff space. The virtual marked pixels are summed up in the inter-cutoff spaces N_ic. One voxel volume in a cutoff as V_{vox co} and one virtual voxel volume in inter-cutoff space V_{vox ic} are calculated. The fluid volume in joint is calculated as V_gen. Fluid volume in articulation cavity V_gen being greater than 1.3 ml, synovitis of a joint is diagnosed.

EFFECT: determined fluid quantity in articulation.

13 dwg, 6 tbl