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Colorectal carcinoma: evaluation with ultrafast CT
H Okizuka1, K Sugimura, N Shinozaki
1Department of Radiology, Shonan Kamakura Hospital, Izumo, Japan.
Clinical Imaging
|October 1, 1995
Summary
Ultrafast computed tomography (CT) effectively identifies colorectal carcinoma and local tumor spread. This advanced imaging technique shows promise for improving preoperative assessment by reducing motion artifacts compared to conventional CT.
Area of Science:
- Medical Imaging
- Oncology
- Gastroenterology
Background:
- Colorectal carcinoma diagnosis and staging are crucial for treatment planning.
- Accurate preoperative assessment of tumor extent and lymph node involvement is essential.
Purpose of the Study:
- To evaluate the diagnostic value of ultrafast computed tomography (CT) for the preoperative assessment of colorectal carcinoma.
- To compare the efficacy of ultrafast CT with conventional CT in detecting local tumor extension and lymph node metastasis.
Main Methods:
- Retrospective analysis of 28 patients with colorectal carcinoma who underwent preoperative ultrafast CT.
- Assessment of primary tumor detection, local tumor extension, invasion into adjacent organs, and lymph node metastasis (pericolic, perirectal, and distant).
Main Results:
- Ultrafast CT detected the primary tumor in 89% of patients.
- High accuracy was observed for local tumor extension (82%) and invasion into adjacent organs (89%).
- The technique showed potential for improved evaluation of pericolic/perirectal lymph node metastasis due to reduced motion artifact.
Conclusions:
- Ultrafast CT is a valuable tool for preoperative assessment of colorectal carcinoma.
- Its ability to minimize motion artifacts enhances the evaluation of local tumor spread and regional lymph node involvement.