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The clinical applications of dual-layer spectral detector CT in digestive system diseases.
Eur Radiol
December 2024
Depatment of Radiology, West China Hospital, Sichuan University, Chengdu, China.
Objective: Dual-layer spectral detector CT (DLCT) has several advantages in clinical practice, this study aims to reveal the clinical applications of DLCT in digestive system diseases.
Materials And Methods: We searched PubMed and Cochrane Reviews for articles published from January 1, 2010 to May 31, 2024, using the terms "dual-layer spectral detector CT" or "dual-layer CT" combined with "hepatic fat" or "hepatic fibrosis" "hepatocellular carcinoma" or "pancreatic ductal adenocarcinoma" or "pancreatic neuroendocrine tumors" or "gastric cancer" or "colorectal cancer" or "Crohn's disease" or "bowel ischemia" or "acute abdominal conditions".
Results: DLCT consists of a top layer sensitive to lower-energy photons and a bottom layer sensitive to higher-energy photons.
Comparison of virtual and true non-contrast images from dual-layer spectral detector computed tomography (CT) in patients with colorectal cancer.
Quant Imaging Med Surg
September 2024
Department of Radiology, West China Hospital, Sichuan University, Chengdu, China.
Article Synopsis
- Colorectal cancer (CRC) assessment via CT raises concerns about radiation exposure; this study compares virtual non-contrast (VNC) images to true non-contrast (TNC) images to evaluate if TNC can effectively reduce radiation doses while maintaining image quality.
- The study involved 69 CRC patients, analyzing image quality through various parameters and subjective assessments by two readers, using statistical tests to compare results from TNC and VNC images.
- Results showed VNC images had lower attenuation and noise values in most tissues compared to TNC images, indicating TNC images could potentially be a safer alternative for CRC evaluation without compromising quality.
New diagnostic strategies to distinguish Crohn's disease and gastrointestinal tuberculosis.
Curr Opin Infect Dis
October 2024
Department of Gastroenterology, All India Institute of Medical Sciences, New Delhi, India.
Purpose Of Review: Despite advances in our radiological, histological and microbiological armamentarium, distinguishing between Crohn's disease (CD) and intestinal tuberculosis (ITB), especially in a TB endemic country, continues to be a challenging exercise in a significant number of patients. This review aims to summarize current available evidence on novel diagnostic techniques which have a potential to fill the gap in our knowledge of differentiating between ITB and CD.
Recent Findings: Both ITB and CD are associated with altered host immune responses, and detection of these altered innate and adaptive immune cells has potential to distinguish ITB from CD.
Correlation between vertebral bone mineral density and multi-level virtual non-calcium imaging parameters from dual-layer spectral detector computed tomography.
Quant Imaging Med Surg
June 2024
Department of Diagnostic Radiology, Graduate Collaborative Training Base of Hunan Cancer Hospital, Hengyang Medical School, University of South China, Hengyang, China.
Background: Virtual non-calcium (VNCa) imaging based on dual-energy computed tomography (CT) plays an increasingly important role in diagnosing spinal diseases. However, the utility of VNCa technology in the measurement of vertebral bone mineral density (BMD) is limited, especially the VNCa CT value at multiple calcium suppression levels and the slope of VNCa curve. This retrospective cross-sectional study aimed to explore the correlation between vertebral BMD and new VNCa parameters from dual-layer spectral detector CT.
View Article and Find Full Text PDFDifferentiation of Crohn's disease, ulcerative colitis, and intestinal tuberculosis by dual-layer spectral detector CT enterography.
Clin Radiol
March 2024
Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. Electronic address:
Aim: To investigate the value of radiological features and energy spectrum quantitative parameters in the differential diagnosis of Crohn's disease (CD), ulcerative colitis (UC), and intestinal tuberculosis (ITB) by dual-layer spectral detector computed tomography (CT) enterography (CTE).
Materials And Methods: Clinical and CTE data were collected from 182 patients with CD, 29 with UC, and 51 with ITB. CT images were obtained at the enteric phases and portal phases.
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