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We report in vitro and in vivo trials of K-edge fluoroscopy, by which iodine contrast concentration is displayed live, with tissue and bone images suppressed, free of patient-motion artifacts. Iodine and cerium, 125 and 225 mg/cm2 respectively, filter alternate TV fields of cine-pulsed 50 KVP x-rays. Weighted subtraction of successive TV fields isolates the iodine image and simultaneously minimizes artifacts. Digital techniques are used in real time. At our present x-ray tube limit, 500 mA instantaneous current, the patient exposure is 180 mR/sec and quantum mottle limits the image quality. Integrating four successive difference images provides a compromise between mottle and smoothly moving displays. Cardiovascular images of a 17-kg dog, using 1 ml/kg Renografin-60 injected into a foreleg vein, show that a 15-cm chest thickness is our present practical maximum. This method may be useful in diagnosing cardiovascular anomalies in infants without catheterization or suspension of breathing.
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
March 1992,
Australasian physical & engineering sciences in medicine,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
May 1984,
AJR. American journal of roentgenology,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
January 1983,
Acta radiologica. Supplementum,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
May 2019,
Yeungnam University journal of medicine,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
June 2020,
Scientific reports,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
May 2014,
Physics in medicine and biology,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
January 2014,
Regional anesthesia and pain medicine,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
January 1983,
AJNR. American journal of neuroradiology,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
March 2018,
Pain physician,
T L Houk, and
R A Kruger, and
C A Mistretta, and
S J Riederer, and
C G Shaw, and
J C Lancaster, and
D C Flemming
November 1990,
AJR. American journal of roentgenology,
