Infertility causes a high level of stress and anxiety for couples who are trying to conceive. Often, there is little explanation or reason why.
It is really important to firstly determine the cause of infertility and then ultimately determine the choice of treatment. @Guerbet have established a simple work up guideline for couples.
Medical imaging procedures such as hysterosalpingography examines the woman’s uterus and fallopian tubes under x-ray and is one of the standard tests to establish infertility in women.
A recent study from the New England Journal of Medicine found that pregnancy rates increased amongst women whose hysterosalpingography was performed with oil based contrast as opposed to water based. It is well worth a read.