Considering the plots above, when the sphere is about 2.5units in radius, the field can be calculated with
reasonable linearity against the reciprocal cube of the distance, even at points as close as 3.0 units from the centre of
the sphere. The corresponding curve for the single dipole at the centre maintains the expected linearity even at points inside
the specimen but as it should in the case of the distributed volume elements the linearity does not hold when the points are
close to the surface of the sphere.This indicates the trends are alright and the apparent linearity of the single dipole case
donot bring any factual trends at these distances.
The picture above is linked to a Web Page [Click
on the picture above to display that page] which contains the Poster materials displayed at the International
Conference on Magnetic Resonance of Biological Systems, held in Hyderabad, INDIA during Jan 16-21,2005. The SHEET-14 of this
poster is titled "Calculating the induced field at a point out
sied the magnetized sphere " and it has also link to this page in return by emphasizing this advantage
of the method.
