Gordon:

Heard (1958)* described a technique in which barium sulphate was used to
impregnate vessels using 7.5% barium nitrate and 10% sodium sulphate for
x-ray examination.

Hutchinson's modification of Spälteholz (Hutchinson 1975). Injection
technique using 'Chromopaque' to demonstrate coronary circulation from
x-ray.**

* Heard, B.E. (1958) A pathological study of emphysema of the lungs with
chronic bronchitis. Thorax, 13, 136.
** Bancroft & Stevens, (1977) Theory and Practice of Histological
Techniques, Churchill Livingstone, pp. 402-403.

Eric Kellar
Histology/Immunohistochemistry
University of Pittsburgh Medical Center

	----------
	From:  Grant, Gordon [SMTP:ggrant@transvascular.com]
	Sent:  Friday, January 22, 1999 12:35 PM
	To:  'Histonet@pathology.swmed.edu'
	Subject:  Re: Barium gel recipe

	Good Morning Histonetters,
	Years ago I used a Barium gel solution, which I was able to inject
into
	coronary arteries at physiologic pressures then cool the heart and
the
	solution would gel. This gel is visible under the fluoroscope. Do
any of
	you have a recipe for this? Any help would be greatly appreciated.
	Thanks in advance
	Gordon Grant
	TransVascular, Inc. Menlo Park CA