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2232
Abstracts
P135
2229
2231
Comparison of fundamental sonography, tissue harmonic sonography, fundamental compound sonography, and tissue harmonic compound sonography for focal hepatic lesions: Qualitative and quantitative evaluation Kim SH, Lee JM, Kim KG, Kim JH, Han JK, Lee JY, Choi BI, Seoul National University Hospital, Korea
Utilization of 4D ultrasound in the detection of liver mass Fernan R, Payawal DA, Lapus Jr I, Reyes R, Cardinal Santos Medical Center, Philippines
Objectives: To compare the image qualities of fundamental, harmonic, fundamental compound, and harmonic compound sonography for the evaluation of focal hepatic lesions, qualitatively and quantitatively and to correlate quantitative results with radiologists’ qualitative results. Methods: Two radiologists independently evaluated 384 images of 96 hepatic lesions and graded regarding lesion conspicuity, margin sharpness, the presence of a halo and overall image quality. For cystic lesions, posterior enhancement and internal artifacts were also analyzed. For quantitative analysis, texture and morphological parameters representing subjective evaluations were extracted using a computeraided image analysis (CAIA) algorithm. Comparisons of qualitative and quantitative results between four techniques were assessed statistically, and the quantitative results were correlated with subjective grading. Results: For qualitative analysis, compound imaging was significantly superior to fundamental imaging regarding lesion conspicuity, margin sharpness, and overall quality. For posterior enhancement and internal artifacts within the cyst, harmonic US was significantly better than fundamental US. The results of quantitative analyses for all parameters were consistent with those of radiologists’ subjective analyses. Conclusions: Compound US appeared to improve lesion conspicuity, margin sharpness, and overall image quality, compared to fundamental US alone. A CAIA algorithm correlated well with analyses of radiologists for most aspects of evaluation, and objectively verified the radiologists’ grading.
2230 Study to evaluate the clinical value of micro-alike threedimensional sonography Li C, Xingzheng Y, Qing Z, Shaoqin Q, Xingjun C, Yidan Q, Hejie X, Changyin C, Jie Z, No.3 Hospital Yichang Hubei, China; Wuhan University, China; Three Gorges University, China Objectives: To evaluate the clinical value of micro-alike three-dimensional (3D) sonography. Methods: In the way of coordinate-creeping or sector scanning, 220 normal and 40 hepatic cirrhosis livers were studied by using twodimensional low frequency scanning and in the three-dimensional mode, C-size, zoomed 10 times, was observed in the minimum threedimensional reconstruction mode. Results: General characters of the normal livers were found in this study: single, irregular polyhedral, with quite homogeneous distribution and quite uniform liver parenchyma, weak-brightness edge with intervals and interspaces surrounded. While the liver cirrhosis had different characters: inhomogeneous parenchyma, and numbers of them with brightened edges fused together or had the trend to fuse; 75% had irregularly-widen intervals, and might accompany with regional ambiguity; 20% had tubercular changes in the liver parenchyma. Conclusions: The micro-alike 3D sonography could recognize the parenchyma and interval imaging from the light spots in the B-mode. The new technology will supply new basis for the clinical diagnosis and treatment.
Objectives: To determine the potential of 4D-US in the detection of neoplastic liver mass. Methods: Patients with liver mass or suspicious liver mass by 2D-US underwent MRI and 4D-US of the liver. Tumor morphology and intralesional vascular involvement were noted. Histopathologic correlation was done on all patients. Results: Seventeen patients had liver mass or suspicious liver mass on 2D-US. Similar number of patients with neoplastic mass and nonneoplastic mass were seen on 2D-US and 4D-US. On MRI findings, more patients were seen to have neoplastic mass. When compared histopathologicaly, sensitivity and specificity of 4D-US were 92% and 75% with a likelihood ratio of 3.7 and 0.11 for a positive and negative test. 2D-US had a 77% and 42% sensitivity and specificity for the detection of neoplastic mass with a likelihood ratio of 1.7 and 0.3 for a positive and negative test. MRI showed 100% sensitivity and 75% with a likelihood ratio of 4 and 0 for a positive and negative test. Intralesional vascular involvement was only seen on 4D-US. Conclusions: 4D-US is superior to 2D-US and is almost comparable with MRI in the detection of neoplastic liver mass. 2232 Abdominal mass, US capability Sidharta H, Siloam Graha Medika Hospital, Indonesia Objectives: Many abdominal problems were first diagnosed by palpation of the abdomen. And when it came to a palpable mass more curiosity appear for the clinicians that make them searching for a tool to establish the final diagnosis. Methods: In Graha Medika Hospital, from the patients that were sent for ultrasound studies, abdominal masses were diagnosed in: nonpalpated masses were 69 males and 131 females; palpated 23 males and 32 females. Their ages ranged from 3 ⵑ 67 y. The patients’ complaint were dyspepsia, vomiting, fever, menstruation problems or without any complaint when they appear just for the general health check up. Results: Using the US machine 2D and 4D, the findings were : Hypoechoic lesions were 68 solitary and 113 multiple; hyperechoic lesions 32 solitary and 6 multiple; mixed lesions 23 solitary and no multiple; cystic lesions 11 solitary and three multiple. Mostly were well defined. Malignant or benign masses could be well described. But in cases that description were impossible, interventional US was of great help. Conclusions: US is of great capability and great help to explain the nature of abdominal masses, could help the clinician to decide surgery or medical treatment should be implemented and to prepare the patients psychology in facing their medical problems.
LESION DETECTION USING US CONTRAST AGENT 2233 Detection of well differentiated hepatocellular carcinoma with contrast-enhanced multi-phase dynamic US Tanaka S, Takakura R, Yoshioka F, Ishida T, Ioka T, Nakaizumi A, Kasugai H, Inoue A, Imanaka K, Osaka Medical Center for Cancer and CVD, Japan Objectives: Chronic viral hepatitis or liver cirrhosis is high risked for HCC. But in such cases with dysplastic nodules or large regenerative
P135
2229
2231
Comparison of fundamental sonography, tissue harmonic sonography, fundamental compound sonography, and tissue harmonic compound sonography for focal hepatic lesions: Qualitative and quantitative evaluation Kim SH, Lee JM, Kim KG, Kim JH, Han JK, Lee JY, Choi BI, Seoul National University Hospital, Korea
Utilization of 4D ultrasound in the detection of liver mass Fernan R, Payawal DA, Lapus Jr I, Reyes R, Cardinal Santos Medical Center, Philippines
Objectives: To compare the image qualities of fundamental, harmonic, fundamental compound, and harmonic compound sonography for the evaluation of focal hepatic lesions, qualitatively and quantitatively and to correlate quantitative results with radiologists’ qualitative results. Methods: Two radiologists independently evaluated 384 images of 96 hepatic lesions and graded regarding lesion conspicuity, margin sharpness, the presence of a halo and overall image quality. For cystic lesions, posterior enhancement and internal artifacts were also analyzed. For quantitative analysis, texture and morphological parameters representing subjective evaluations were extracted using a computeraided image analysis (CAIA) algorithm. Comparisons of qualitative and quantitative results between four techniques were assessed statistically, and the quantitative results were correlated with subjective grading. Results: For qualitative analysis, compound imaging was significantly superior to fundamental imaging regarding lesion conspicuity, margin sharpness, and overall quality. For posterior enhancement and internal artifacts within the cyst, harmonic US was significantly better than fundamental US. The results of quantitative analyses for all parameters were consistent with those of radiologists’ subjective analyses. Conclusions: Compound US appeared to improve lesion conspicuity, margin sharpness, and overall image quality, compared to fundamental US alone. A CAIA algorithm correlated well with analyses of radiologists for most aspects of evaluation, and objectively verified the radiologists’ grading.
2230 Study to evaluate the clinical value of micro-alike threedimensional sonography Li C, Xingzheng Y, Qing Z, Shaoqin Q, Xingjun C, Yidan Q, Hejie X, Changyin C, Jie Z, No.3 Hospital Yichang Hubei, China; Wuhan University, China; Three Gorges University, China Objectives: To evaluate the clinical value of micro-alike three-dimensional (3D) sonography. Methods: In the way of coordinate-creeping or sector scanning, 220 normal and 40 hepatic cirrhosis livers were studied by using twodimensional low frequency scanning and in the three-dimensional mode, C-size, zoomed 10 times, was observed in the minimum threedimensional reconstruction mode. Results: General characters of the normal livers were found in this study: single, irregular polyhedral, with quite homogeneous distribution and quite uniform liver parenchyma, weak-brightness edge with intervals and interspaces surrounded. While the liver cirrhosis had different characters: inhomogeneous parenchyma, and numbers of them with brightened edges fused together or had the trend to fuse; 75% had irregularly-widen intervals, and might accompany with regional ambiguity; 20% had tubercular changes in the liver parenchyma. Conclusions: The micro-alike 3D sonography could recognize the parenchyma and interval imaging from the light spots in the B-mode. The new technology will supply new basis for the clinical diagnosis and treatment.
Objectives: To determine the potential of 4D-US in the detection of neoplastic liver mass. Methods: Patients with liver mass or suspicious liver mass by 2D-US underwent MRI and 4D-US of the liver. Tumor morphology and intralesional vascular involvement were noted. Histopathologic correlation was done on all patients. Results: Seventeen patients had liver mass or suspicious liver mass on 2D-US. Similar number of patients with neoplastic mass and nonneoplastic mass were seen on 2D-US and 4D-US. On MRI findings, more patients were seen to have neoplastic mass. When compared histopathologicaly, sensitivity and specificity of 4D-US were 92% and 75% with a likelihood ratio of 3.7 and 0.11 for a positive and negative test. 2D-US had a 77% and 42% sensitivity and specificity for the detection of neoplastic mass with a likelihood ratio of 1.7 and 0.3 for a positive and negative test. MRI showed 100% sensitivity and 75% with a likelihood ratio of 4 and 0 for a positive and negative test. Intralesional vascular involvement was only seen on 4D-US. Conclusions: 4D-US is superior to 2D-US and is almost comparable with MRI in the detection of neoplastic liver mass. 2232 Abdominal mass, US capability Sidharta H, Siloam Graha Medika Hospital, Indonesia Objectives: Many abdominal problems were first diagnosed by palpation of the abdomen. And when it came to a palpable mass more curiosity appear for the clinicians that make them searching for a tool to establish the final diagnosis. Methods: In Graha Medika Hospital, from the patients that were sent for ultrasound studies, abdominal masses were diagnosed in: nonpalpated masses were 69 males and 131 females; palpated 23 males and 32 females. Their ages ranged from 3 ⵑ 67 y. The patients’ complaint were dyspepsia, vomiting, fever, menstruation problems or without any complaint when they appear just for the general health check up. Results: Using the US machine 2D and 4D, the findings were : Hypoechoic lesions were 68 solitary and 113 multiple; hyperechoic lesions 32 solitary and 6 multiple; mixed lesions 23 solitary and no multiple; cystic lesions 11 solitary and three multiple. Mostly were well defined. Malignant or benign masses could be well described. But in cases that description were impossible, interventional US was of great help. Conclusions: US is of great capability and great help to explain the nature of abdominal masses, could help the clinician to decide surgery or medical treatment should be implemented and to prepare the patients psychology in facing their medical problems.
LESION DETECTION USING US CONTRAST AGENT 2233 Detection of well differentiated hepatocellular carcinoma with contrast-enhanced multi-phase dynamic US Tanaka S, Takakura R, Yoshioka F, Ishida T, Ioka T, Nakaizumi A, Kasugai H, Inoue A, Imanaka K, Osaka Medical Center for Cancer and CVD, Japan Objectives: Chronic viral hepatitis or liver cirrhosis is high risked for HCC. But in such cases with dysplastic nodules or large regenerative