To do this, they may recommend having a medical procedure, such as a bone marrow aspiration or a bone marrow biopsy, to collect a sample of bone marrow. The results of a bone marrow aspiration and/or biopsy help doctors diagnose the following conditions: 1  An infection with an unknown cause. 2  Blood disorders.3  Chromosomal or genetic diseases. 4  Cancer of the blood cells, such as leukemia.he procedures can also be used to monitor the side effects of chemotherapy and determine whether the treatment is working. About the procedure. A bone marrow aspiration is a procedure that removes a sample of the liquid portion of bone marrow.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  two-dimensionality, flatness, planeness(noun) the property of having two dimensions. 2  flatness(noun) a want of animation or brilliance. 3  flatness(noun) a deficiency in flavor.
The difference between the thickest and thinnest points on a plate (ex. 2.307â³ thickest measurement, 2.302â³ thinnest measurement = parallel within 0.005â³) Plate flatness: Flatness is not related to thickness or parallelism! Plate flatness is measured relative to a reference surface such as a grinder table or granite table. Flatness is most commonly measured as a deviation per linear foot from the reference plane. One example of measuring flatness: A part is place on three reference blocks resting on a granite table. A precision indicator is then passed underneath the part measuring the distance between the surface of the granite table and the bottom surface of the part.