Comparison of peritoneal tumor imaging using conventional MR imaging and diffusion-weighted MR imaging with different b values

Bozkurt, Mahmut; Doğanay, Selim; Kantarcı, Mecit; Yalçın, Ahmet; Eren, Suat; Atamanalp, Sabri Selçuk; Yuce, Ihsan; Yıldırgan, M. İlhan

doi:10.1016/j.ejrad.2010.06.004

Cited by 57 publications

(30 citation statements)

References 20 publications

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“…MR-DWI (c axial T2, d axial DWI) showed moderate pericolic ascites but without high signal on DWI. Diffuse peritoneal implants were confirmed during laparoscopy conspicuous on MR-DWI [7,18] because the liver has a low signal with high b value DWI sequences, thus providing high contrast between peritoneal implants and liver edges. This advantage may be less clear in the left supramesocolic area because of the persistent spleen hypersignal in the DW images.…”

Section: Discussionmentioning

confidence: 99%

Comparison of FDG-PET/CT and MR with diffusion-weighted imaging for assessing peritoneal carcinomatosis from gastrointestinal malignancy

et al. 2012

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Section: Discussionmentioning

confidence: 99%

Comparison of FDG-PET/CT and MR with diffusion-weighted imaging for assessing peritoneal carcinomatosis from gastrointestinal malignancy

et al. 2012

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“…However, large lesions neighboring the anterior or lateral abdominal wall are easily identified by ultrasound. Contrast enhanced CT is frequently used to diagnose peritoneal metastases, but major limitations of this technique include the relative insensitivity for lesions smaller than 5 mm and radiation exposure [2]. Dynamic MRI with contrast administration has an important role with advantages of high sensitivity (85-93%) and specificity (78-96%) values.…”

Section: Discussionmentioning

confidence: 99%

“…Primary tumors of the peritoneum are rare, whereas metastatic disease is the most commonly encountered neoplastic process involving the peritoneum. Treatment protocols (medical treatment or surgery) are determined by the location and spread of peritoneal tumors [2].…”

Section: Discussionmentioning

confidence: 99%

“…ROI diameters changed between patients according to the metastasis size. The mean area of the ROIs drawn in this study was 124±22 mm 2 (range between 84-172 mm 2 ). We applied 3 ROI cursors on each lesion, and the peritoneal fat around the metastases and the mean values were recorded.…”

Section: Image Analysismentioning

confidence: 99%

“…The depiction of peritoneal metastases associated with abdominal malignancies is more emphasized in conjunction with improved diagnostic imaging modalities [1][2][3]. Various imaging modalities, including ultrasonography (US), multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI), are used for diagnosings peritoneal metastases [1].…”

Section: Introductionmentioning

confidence: 99%

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Diagnosis of Peritoneal Metastases with Abdominal Malignancies: Role of ADC Measurement on Diffusion Weighted MRI

Onur

Akyol

Poyraz

et al. 2012

EAJM

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Objective: The purpose of our study was to evaluate the utility of the apparent diffusion coefficient (ADC) value measurement in the diagnosis of peritoneal metastases on diffusion weighted magnetic resonance imaging. Materials and Methods: Diffusion weighted imaging with conventional magnetic resonance imaging sequences was performed on twenty consecutive oncology patients (group I) with peritoneal metastases. The ADC values of the metastases, the peritoneal fat around the metastases (group I) and the peritoneal fat in patients with no malignancy (group II) at b(0-100), b(0-600), and (b 0-1000) s/mm 2 gradients were measured and compared. Results: The apparent diffusion coefficient values of three gradients in peritoneal metastases (2.27±0.4; 1.67±0.7 and 1.09±0.4x10 -3 mm 2 /s at b 100, 600 and 1000 gradients, respectively) were significantly lower than the ADC values of the peritoneal fat around metastases (3.07±0.4; 2.07±0.4; 1.33±0.3x10 -3 mm 2 /s at b 100, 600 and 1000 gradients, respectively) (p<0.05). There was no significant difference between the ADC values of peritoneal fat in the patients of group I and group II at the 3 diffusion gradients (p>0.05). Conclusion:The measurement of ADC values may be used as a complementary diagnostic method in differentiating peritoneal metastases from peritoneal fat on Diffusion Weighted MRI (DWMRI DWMRI). Key Words: Apparent diffusion coefficient value, Diffusion weighted imaging, Malignancy, Metastasis, Peritoneum Özet Amaç: Bu çalışmanın amacı difüzyon ağırlıklı manyetik rezonans görüntülemede (MRG) peritoneal metastazların tanısında görünür difüzyon katsayısı (ADC) değerlerinin yararlılığını değerlendirmektir. Gereç ve Yöntem:Peritoneal metastazı bulunan 20 onkoloji hastası-na (grup 1) konvansiyonel MRG sekansları ile birlikte difüzyon ağırlıklı görüntüleme gerçekleştirildi. Peritoneal metastazların, metastaz çev-resindeki yağ dokusunun ve malignansisi olmayanların (grup 2) peritoneal yağ dokusunun ADC değerleri b (0-100), b (0-600), and (b 0-1000) s/mm 2 difüzyon gradiyentlerinde ölçüldü ve karşılaştırıldı.

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Oncologic applications of diffusion‐weighted MRI in the body

Bonekamp

Corona‐Villalobos

Kamel

2012

Magnetic Resonance Imaging

116

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Diffusion‐weighted MRI (DWI) allows the detection of malignancies in the abdomen and pelvis. Lesion detection and characterization using DWI largely depends on the increased cellularity of solid or cystic lesions compared with the surrounding tissue. This increased cellularity leads results in restricted diffusion as indicated by reduction in the apparent diffusion coefficient (ADC). Low pretreatment ADC values of several malignancies have been shown to be predictive of better outcome. DWI can assess response to systemic or regional treatment of cancer at a cellular level and will therefore detect successful treatment earlier than anatomical measures. In this review, we provide a brief technical overview of DWI, discuss quantitative image analysis approaches, and review studies which have used DWI for the purpose of detection and characterization of malignancies as well as the early prediction of treatment response. J. Magn. Reson. Imaging 2012;257–279. © 2011 Wiley Periodicals, Inc.

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Comparison of peritoneal tumor imaging using conventional MR imaging and diffusion-weighted MR imaging with different b values

Cited by 57 publications

References 20 publications

Comparison of FDG-PET/CT and MR with diffusion-weighted imaging for assessing peritoneal carcinomatosis from gastrointestinal malignancy

Comparison of FDG-PET/CT and MR with diffusion-weighted imaging for assessing peritoneal carcinomatosis from gastrointestinal malignancy

Diagnosis of Peritoneal Metastases with Abdominal Malignancies: Role of ADC Measurement on Diffusion Weighted MRI

Oncologic applications of diffusion‐weighted MRI in the body

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