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Mass screening of multiple abdominal solid organs using mobile helical computed tomography scanner--a preliminary
Susumu Ishikawa1, Jun Aoki, Susumu Ohwada
1Second Department of Surgery, Gunma University Graduate School of Medicine, Tokyo, Japan. ishikawa@med.teikyo-u.ac.jp
Asian Journal of Surgery
|May 4, 2007
Summary
Mobile helical computed tomography (CT) screening identified numerous abnormalities in residents aged 40+, including suspected solid tumors. However, diagnoses without contrast medium were challenging, requiring further investigation for effectiveness.
Area of Science:
- Radiology
- Medical Imaging
- Public Health Screening
Background:
- Screening for abdominal solid organ diseases can improve early detection and patient outcomes.
- Mobile helical computed tomography (CT) offers potential for widespread screening initiatives.
Purpose of the Study:
- To evaluate the feasibility of a novel screening protocol for multiple abdominal solid organs.
- To assess the utility of mobile helical CT scanning without contrast medium for population-based screening.
Main Methods:
- A total of 4,543 residents aged 40 and older underwent CT scanning without contrast.
- Participants had a mean age of 64 years, with 2,022 males and 2,521 females.
Main Results:
- 2,105 abnormal findings were detected in 1,594 participants.
- Liver and kidney diseases constituted approximately 30% of abnormalities.
- Solid tumors were suspected in 56 lesions, with 5 (9%) confirmed as malignant (pancreatic, liver, lung, ovarian cancers).
- Abdominal aortic aneurysms and heart valve diseases were also identified.
Conclusions:
- Diagnosing solid tumors qualitatively without contrast medium via CT is difficult.
- Further research is needed on examinee selection, CT scanning protocols, sensitivity, specificity, and cost-effectiveness for CT screening procedures.
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