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SPECT of the peritoneal cavity: method for delineating intraperitoneal fluid distribution
1Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor 48109-0028.
AJR. American Journal of Roentgenology
|June 1, 1989
Summary
Single-photon emission CT (SPECT) effectively visualizes intraperitoneal fluid distribution for chemotherapy planning. This imaging technique offers superior anatomical detail compared to planar scans, aiding treatment strategies for intraabdominal tumors.
Area of Science:
- Nuclear Medicine
- Radiology
- Oncology
Background:
- Intraperitoneal chemotherapy requires precise understanding of fluid distribution.
- Assessing fluid spread is crucial for effective drug delivery in intraabdominal tumors.
Purpose of the Study:
- To evaluate the utility of 99mTc-sulfur colloid SPECT for assessing intraperitoneal fluid distribution.
- To compare SPECT imaging with planar gamma imaging and transmission CT.
Main Methods:
- Seventeen patients with colon cancer history underwent SPECT and planar imaging after intraperitoneal 99mTc-sulfur colloid injection.
- Four patients had concurrent transmission CT scans.
- Repeat studies assessed the impact of different infusion volumes (1.5L vs. 3.0L) on fluid distribution.
Main Results:
- 360-degree peritoneal SPECT is feasible and provides superior anatomical detail over planar imaging, especially for upper abdominal spaces like the lesser sac.
- SPECT findings correlated well with transmission CT.
- Quantitative analysis showed reproducible fluid distribution and no significant differences between 1.5L and 3.0L infusion volumes.
Conclusions:
- SPECT is a valuable tool for defining the extent and location of intraperitoneally administered fluids.
- This technique can optimize the delivery of drugs and radiopharmaceuticals for intraabdominal tumor treatment.