Interesting...

[patgund]

Thanks to phinnia for finding this one:

Magnetic resonance imaging of male and female genitals during coitus and female sexual arousal

" Abstract

Objective: To find out whether taking images of the male and female genitals during coitus is feasible and to find out whether former and current ideas about the anatomy during sexual intercourse and during female sexual arousal are based on assumptions or on facts.

Design: Observational study.

Setting: University hospital in the Netherlands.

Methods: Magnetic resonance imaging was used to study the female sexual response and the male and female genitals during coitus. Thirteen experiments were performed with eight couples and three single women.

Results: The images obtained showed that during intercourse in the "missionary position" the penis has the shape of a boomerang and 1/3 of its length consists of the root of the penis. During female sexual arousal without intercourse the uterus was raised and the anterior vaginal wall lengthened. The size of the uterus did not increase during sexual arousal.

Conclusion: Taking magnetic resonance images of the male and female genitals during coitus is feasible and contributes to understanding of anatomy."

Comments

[duckflambe.livejournal.com]

What I think is most telling is this chart.

Note:
Half the male/female couples there is no female orgasm.
None of the "Complete Penetration" cases had a female orgasm.
100% of solo females had orgasm.
And there isn't even a field for "Male Orgasm" (I guess its a given?).

[selenesue.livejournal.com]

Er, don't you have to hold still to get a MRI? I know I'm not gonna do that in that position, buster! [grin]

[patgund.livejournal.com]

*chuckle* You DO have to hold still, this is why there were too many artifacts in the older 1.5 tesla MRI machine, the speed was too slow. They got much better results with a newer faster 1.5 tesla MRI